Backport LTS 5.10.56 from upstream.
Arkadiusz Kubalewski (2): i40e: Fix logic of disabling queues i40e: Fix firmware LLDP agent related warning
Arnaldo Carvalho de Melo (1): Revert "perf map: Fix dso->nsinfo refcounting"
Bjorn Andersson (1): drm/msm/dp: Initialize the INTF_CONFIG register
Cong Wang (1): skmsg: Make sk_psock_destroy() static
Dale Zhao (1): drm/amd/display: ensure dentist display clock update finished in DCN20
Dan Carpenter (1): can: hi311x: fix a signedness bug in hi3110_cmd()
Daniel Borkmann (4): bpf: Introduce BPF nospec instruction for mitigating Spectre v4 bpf: Fix leakage due to insufficient speculative store bypass mitigation bpf: Remove superfluous aux sanitation on subprog rejection bpf: Fix pointer arithmetic mask tightening under state pruning
Desmond Cheong Zhi Xi (1): btrfs: fix rw device counting in __btrfs_free_extra_devids
Dima Chumak (1): net/mlx5e: Fix nullptr in mlx5e_hairpin_get_mdev()
Felix Fietkau (1): mac80211: fix enabling 4-address mode on a sta vif after assoc
Florian Westphal (1): netfilter: conntrack: adjust stop timestamp to real expiry value
Geetha sowjanya (1): octeontx2-pf: Fix interface down flag on error
Gilad Naaman (1): net: Set true network header for ECN decapsulation
Goldwyn Rodrigues (1): btrfs: mark compressed range uptodate only if all bio succeed
Greg Kroah-Hartman (1): selftest: fix build error in tools/testing/selftests/vm/userfaultfd.c
Hoang Le (1): tipc: fix sleeping in tipc accept routine
Hui Wang (1): Revert "ACPI: resources: Add checks for ACPI IRQ override"
Jan Kiszka (1): x86/asm: Ensure asm/proto.h can be included stand-alone
Jason Gerecke (1): HID: wacom: Re-enable touch by default for Cintiq 24HDT / 27QHDT
Jedrzej Jagielski (2): i40e: Fix queue-to-TC mapping on Tx i40e: Fix log TC creation failure when max num of queues is exceeded
Jiapeng Chong (1): mlx4: Fix missing error code in mlx4_load_one()
Jiri Kosina (2): drm/amdgpu: Avoid printing of stack contents on firmware load error drm/amdgpu: Fix resource leak on probe error path
Juergen Gross (1): x86/kvm: fix vcpu-id indexed array sizes
Junxiao Bi (2): ocfs2: fix zero out valid data ocfs2: issue zeroout to EOF blocks
Krzysztof Kozlowski (1): nfc: nfcsim: fix use after free during module unload
Linus Torvalds (1): pipe: make pipe writes always wake up readers
Lorenz Bauer (2): bpf: Fix OOB read when printing XDP link fdinfo bpf: verifier: Allocate idmap scratch in verifier env
Lukasz Cieplicki (1): i40e: Add additional info to PHY type error
Maor Gottlieb (1): net/mlx5: Fix flow table chaining
Marcelo Ricardo Leitner (1): sctp: fix return value check in __sctp_rcv_asconf_lookup
Mike Rapoport (1): alpha: register early reserved memory in memblock
Naresh Kumar PBS (1): RDMA/bnxt_re: Fix stats counters
Nguyen Dinh Phi (1): cfg80211: Fix possible memory leak in function cfg80211_bss_update
Oleksij Rempel (1): can: j1939: j1939_session_deactivate(): clarify lifetime of session object
Pablo Neira Ayuso (1): netfilter: nft_nat: allow to specify layer 4 protocol NAT only
Paolo Bonzini (1): KVM: add missing compat KVM_CLEAR_DIRTY_LOG
Paul Jakma (1): NIU: fix incorrect error return, missed in previous revert
Pavel Skripkin (6): can: mcba_usb_start(): add missing urb->transfer_dma initialization can: usb_8dev: fix memory leak can: ems_usb: fix memory leak can: esd_usb2: fix memory leak net: qrtr: fix memory leaks net: llc: fix skb_over_panic
Robert Foss (1): drm/msm/dpu: Fix sm8250_mdp register length
Shannon Nelson (3): ionic: remove intr coalesce update from napi ionic: fix up dim accounting for tx and rx ionic: count csum_none when offload enabled
Srikar Dronamraju (1): powerpc/pseries: Fix regression while building external modules
Srinivas Pandruvada (1): ACPI: DPTF: Fix reading of attributes
Stephane Grosjean (1): can: peak_usb: pcan_usb_handle_bus_evt(): fix reading rxerr/txerr values
Steve French (1): SMB3: fix readpage for large swap cache
Tejun Heo (1): blk-iocost: fix operation ordering in iocg_wake_fn()
Vitaly Kuznetsov (1): KVM: x86: Check the right feature bit for MSR_KVM_ASYNC_PF_ACK access
Wang Hai (2): tulip: windbond-840: Fix missing pci_disable_device() in probe and remove sis900: Fix missing pci_disable_device() in probe and remove
Xin Long (2): tipc: fix implicit-connect for SYN+ tipc: do not write skb_shinfo frags when doing decrytion
Yang Yingliang (1): io_uring: fix null-ptr-deref in io_sq_offload_start()
Zhang Changzhong (1): can: j1939: j1939_xtp_rx_dat_one(): fix rxtimer value between consecutive TP.DT to 750ms
Ziyang Xuan (1): can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
arch/alpha/kernel/setup.c | 13 +- arch/arm/net/bpf_jit_32.c | 3 + arch/arm64/net/bpf_jit_comp.c | 13 ++ arch/mips/net/ebpf_jit.c | 3 + arch/powerpc/net/bpf_jit_comp64.c | 6 + arch/powerpc/platforms/pseries/setup.c | 2 +- arch/riscv/net/bpf_jit_comp32.c | 4 + arch/riscv/net/bpf_jit_comp64.c | 4 + arch/s390/net/bpf_jit_comp.c | 5 + arch/sparc/net/bpf_jit_comp_64.c | 3 + arch/x86/include/asm/proto.h | 2 + arch/x86/kvm/ioapic.c | 2 +- arch/x86/kvm/ioapic.h | 4 +- arch/x86/kvm/x86.c | 4 +- arch/x86/net/bpf_jit_comp.c | 7 + arch/x86/net/bpf_jit_comp32.c | 6 + block/blk-iocost.c | 11 +- drivers/acpi/dptf/dptf_pch_fivr.c | 51 ++++- drivers/acpi/resource.c | 9 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 +- drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 7 +- .../display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 2 +- .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 2 +- drivers/gpu/drm/msm/dp/dp_catalog.c | 1 + drivers/hid/wacom_wac.c | 2 +- drivers/infiniband/hw/bnxt_re/main.c | 4 +- drivers/infiniband/hw/bnxt_re/qplib_res.c | 10 +- drivers/infiniband/hw/bnxt_re/qplib_res.h | 1 + drivers/net/can/spi/hi311x.c | 2 +- drivers/net/can/usb/ems_usb.c | 14 +- drivers/net/can/usb/esd_usb2.c | 16 +- drivers/net/can/usb/mcba_usb.c | 2 + drivers/net/can/usb/peak_usb/pcan_usb.c | 10 +- drivers/net/can/usb/usb_8dev.c | 15 +- drivers/net/ethernet/dec/tulip/winbond-840.c | 7 +- .../net/ethernet/intel/i40e/i40e_ethtool.c | 6 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 61 +++--- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 50 +++++ drivers/net/ethernet/intel/i40e/i40e_txrx.h | 2 + .../marvell/octeontx2/nic/otx2_ethtool.c | 7 +- .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 5 + drivers/net/ethernet/mellanox/mlx4/main.c | 1 + .../net/ethernet/mellanox/mlx5/core/en_tc.c | 33 +++- .../net/ethernet/mellanox/mlx5/core/fs_core.c | 10 +- .../net/ethernet/pensando/ionic/ionic_lif.c | 14 +- .../net/ethernet/pensando/ionic/ionic_txrx.c | 41 ++-- drivers/net/ethernet/sis/sis900.c | 7 +- drivers/net/ethernet/sun/niu.c | 3 +- drivers/nfc/nfcsim.c | 3 +- fs/btrfs/compression.c | 2 +- fs/btrfs/volumes.c | 1 + fs/cifs/file.c | 2 +- fs/io_uring.c | 2 +- fs/ocfs2/file.c | 103 ++++++---- fs/pipe.c | 10 +- include/linux/bpf_types.h | 1 + include/linux/bpf_verifier.h | 11 +- include/linux/filter.h | 15 ++ include/linux/skmsg.h | 1 - include/net/llc_pdu.h | 31 ++- kernel/bpf/core.c | 19 +- kernel/bpf/disasm.c | 16 +- kernel/bpf/verifier.c | 186 ++++++------------ net/can/j1939/transport.c | 11 +- net/can/raw.c | 20 +- net/core/skmsg.c | 3 +- net/ipv4/ip_tunnel.c | 2 +- net/llc/af_llc.c | 10 +- net/llc/llc_s_ac.c | 2 +- net/mac80211/cfg.c | 19 ++ net/mac80211/ieee80211_i.h | 2 + net/mac80211/mlme.c | 4 +- net/netfilter/nf_conntrack_core.c | 7 +- net/netfilter/nft_nat.c | 4 +- net/qrtr/qrtr.c | 6 +- net/sctp/input.c | 2 +- net/tipc/crypto.c | 14 +- net/tipc/socket.c | 30 +-- net/wireless/scan.c | 6 +- tools/perf/util/map.c | 2 - tools/testing/selftests/vm/userfaultfd.c | 2 +- virt/kvm/kvm_main.c | 28 +++ 82 files changed, 706 insertions(+), 366 deletions(-)
From: Greg Kroah-Hartman gregkh@linuxfoundation.org
stable inclusion from stable-5.10.56 commit e44d22fdf75613503b31a38fa824a98c970ea119 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
When backporting 0db282ba2c12 ("selftest: use mmap instead of posix_memalign to allocate memory") to this stable branch, I forgot a { breaking the build.
Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- tools/testing/selftests/vm/userfaultfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index b1be8df80611..d418ca5f9039 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -182,7 +182,7 @@ static void anon_allocate_area(void **alloc_area) { *alloc_area = mmap(NULL, nr_pages * page_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - if (*alloc_area == MAP_FAILED) + if (*alloc_area == MAP_FAILED) { fprintf(stderr, "mmap of anonymous memory failed"); *alloc_area = NULL; }
From: Yang Yingliang yangyingliang@huawei.com
stable inclusion from stable-5.10.56 commit 65b2658634fedc0a34fb04832a702834e77791e5 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
I met a null-ptr-deref when doing fault-inject test:
[ 65.441626][ T8299] general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] PREEMPT SMP KASAN [ 65.443219][ T8299] KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f] [ 65.444331][ T8299] CPU: 2 PID: 8299 Comm: test Not tainted 5.10.49+ #499 [ 65.445277][ T8299] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 65.446614][ T8299] RIP: 0010:io_disable_sqo_submit+0x124/0x260 [ 65.447554][ T8299] Code: 7b 40 89 ee e8 2d b9 9a ff 85 ed 74 40 e8 04 b8 9a ff 49 8d be 48 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 22 01 00 00 49 8b ae 48 01 00 00 48 85 ed 74 0d [ 65.450860][ T8299] RSP: 0018:ffffc9000122fd70 EFLAGS: 00010202 [ 65.451826][ T8299] RAX: dffffc0000000000 RBX: ffff88801b11f000 RCX: ffffffff81d5d783 [ 65.453166][ T8299] RDX: 0000000000000029 RSI: ffffffff81d5d78c RDI: 0000000000000148 [ 65.454606][ T8299] RBP: 0000000000000002 R08: ffff88810168c280 R09: ffffed1003623e79 [ 65.456063][ T8299] R10: ffffc9000122fd70 R11: ffffed1003623e78 R12: ffff88801b11f040 [ 65.457542][ T8299] R13: ffff88801b11f3c0 R14: 0000000000000000 R15: 000000000000001a [ 65.458910][ T8299] FS: 00007ffb602e3500(0000) GS:ffff888064100000(0000) knlGS:0000000000000000 [ 65.460533][ T8299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.461736][ T8299] CR2: 00007ffb5fe7eb24 CR3: 000000010a619000 CR4: 0000000000750ee0 [ 65.463146][ T8299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.464618][ T8299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.466052][ T8299] PKRU: 55555554 [ 65.466708][ T8299] Call Trace: [ 65.467304][ T8299] io_uring_setup+0x2041/0x3ac0 [ 65.468169][ T8299] ? io_iopoll_check+0x500/0x500 [ 65.469123][ T8299] ? syscall_enter_from_user_mode+0x1c/0x50 [ 65.470241][ T8299] do_syscall_64+0x2d/0x70 [ 65.471028][ T8299] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.472099][ T8299] RIP: 0033:0x7ffb5fdec839 [ 65.472925][ T8299] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48 [ 65.476465][ T8299] RSP: 002b:00007ffc33539ef8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 [ 65.478026][ T8299] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffb5fdec839 [ 65.479503][ T8299] RDX: 0000000020ffd000 RSI: 0000000020000080 RDI: 0000000000100001 [ 65.480927][ T8299] RBP: 00007ffc33539f70 R08: 0000000000000000 R09: 0000000000000000 [ 65.482416][ T8299] R10: 0000000000000000 R11: 0000000000000206 R12: 0000555e85531320 [ 65.483845][ T8299] R13: 00007ffc3353a0a0 R14: 0000000000000000 R15: 0000000000000000 [ 65.485331][ T8299] Modules linked in: [ 65.486000][ T8299] Dumping ftrace buffer: [ 65.486772][ T8299] (ftrace buffer empty) [ 65.487595][ T8299] ---[ end trace a9a5fad3ebb303b7 ]---
If io_allocate_scq_urings() fails in io_uring_create(), 'ctx->sq_data' is not set yet, when calling io_sq_offload_start() in io_disable_sqo_submit() in error path, it will lead a null-ptr-deref.
The io_disable_sqo_submit() has been removed in mainline by commit 70aacfe66136 ("io_uring: kill sqo_dead and sqo submission halting"), so the bug has been eliminated in mainline, it's a fix only for stable-5.10.
Signed-off-by: Yang Yingliang yangyingliang@huawei.com Cc: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c index 525b44140d7a..ed641dca7957 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7997,7 +7997,7 @@ static void io_sq_offload_start(struct io_ring_ctx *ctx) struct io_sq_data *sqd = ctx->sq_data;
ctx->flags &= ~IORING_SETUP_R_DISABLED; - if ((ctx->flags & IORING_SETUP_SQPOLL) && sqd->thread) + if ((ctx->flags & IORING_SETUP_SQPOLL) && sqd && sqd->thread) wake_up_process(sqd->thread); }
From: Jan Kiszka jan.kiszka@siemens.com
stable inclusion from stable-5.10.56 commit 02210a5e1894d5da89fbc67f44a182b7739fbaa3 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f7b21a0e41171d22296b897dac6e4c41d2a3643c ]
Fix:
../arch/x86/include/asm/proto.h:14:30: warning: ‘struct task_struct’ declared \ inside parameter list will not be visible outside of this definition or declaration long do_arch_prctl_64(struct task_struct *task, int option, unsigned long arg2); ^~~~~~~~~~~
.../arch/x86/include/asm/proto.h:40:34: warning: ‘struct task_struct’ declared \ inside parameter list will not be visible outside of this definition or declaration long do_arch_prctl_common(struct task_struct *task, int option, ^~~~~~~~~~~
if linux/sched.h hasn't be included previously. This fixes a build error when this header is used outside of the kernel tree.
[ bp: Massage commit message. ]
Signed-off-by: Jan Kiszka jan.kiszka@siemens.com Signed-off-by: Borislav Petkov bp@suse.de Link: https://lkml.kernel.org/r/b76b4be3-cf66-f6b2-9a6c-3e7ef54f9845@web.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/x86/include/asm/proto.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h index b6a9d51d1d79..8c5d1910a848 100644 --- a/arch/x86/include/asm/proto.h +++ b/arch/x86/include/asm/proto.h @@ -4,6 +4,8 @@
#include <asm/ldt.h>
+struct task_struct; + /* misc architecture specific prototypes */
void syscall_init(void);
From: Linus Torvalds torvalds@linux-foundation.org
stable inclusion from stable-5.10.56 commit 27aa7171fe2b00c3de01e8e3a3298a3639f37fa3 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 3a34b13a88caeb2800ab44a4918f230041b37dd9 upstream.
Since commit 1b6b26ae7053 ("pipe: fix and clarify pipe write wakeup logic") we have sanitized the pipe write logic, and would only try to wake up readers if they needed it.
In particular, if the pipe already had data in it before the write, there was no point in trying to wake up a reader, since any existing readers must have been aware of the pre-existing data already. Doing extraneous wakeups will only cause potential thundering herd problems.
However, it turns out that some Android libraries have misused the EPOLL interface, and expected "edge triggered" be to "any new write will trigger it". Even if there was no edge in sight.
Quoting Sandeep Patil: "The commit 1b6b26ae7053 ('pipe: fix and clarify pipe write wakeup logic') changed pipe write logic to wakeup readers only if the pipe was empty at the time of write. However, there are libraries that relied upon the older behavior for notification scheme similar to what's described in [1]
One such library 'realm-core'[2] is used by numerous Android applications. The library uses a similar notification mechanism as GNU Make but it never drains the pipe until it is full. When Android moved to v5.10 kernel, all applications using this library stopped working.
The library has since been fixed[3] but it will be a while before all applications incorporate the updated library"
Our regression rule for the kernel is that if applications break from new behavior, it's a regression, even if it was because the application did something patently wrong. Also note the original report [4] by Michal Kerrisk about a test for this epoll behavior - but at that point we didn't know of any actual broken use case.
So add the extraneous wakeup, to approximate the old behavior.
[ I say "approximate", because the exact old behavior was to do a wakeup not for each write(), but for each pipe buffer chunk that was filled in. The behavior introduced by this change is not that - this is just "every write will cause a wakeup, whether necessary or not", which seems to be sufficient for the broken library use. ]
It's worth noting that this adds the extraneous wakeup only for the write side, while the read side still considers the "edge" to be purely about reading enough from the pipe to allow further writes.
See commit f467a6a66419 ("pipe: fix and clarify pipe read wakeup logic") for the pipe read case, which remains that "only wake up if the pipe was full, and we read something from it".
Link: https://lore.kernel.org/lkml/CAHk-=wjeG0q1vgzu4iJhW5juPkTsjTYmiqiMUYAebWW+0b... [1] Link: https://github.com/realm/realm-core [2] Link: https://github.com/realm/realm-core/issues/4666 [3] Link: https://lore.kernel.org/lkml/CAKgNAkjMBGeAwF=2MKK758BhxvW58wYTgYKB2V-gY1PwXx... [4] Link: https://lore.kernel.org/lkml/20210729222635.2937453-1-sspatil@android.com/ Reported-by: Sandeep Patil sspatil@android.com Cc: Michael Kerrisk mtk.manpages@gmail.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/pipe.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/pipe.c b/fs/pipe.c index 412b3b618994..6f5f97c0fdee 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -429,20 +429,20 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from) #endif
/* - * Only wake up if the pipe started out empty, since - * otherwise there should be no readers waiting. + * Epoll nonsensically wants a wakeup whether the pipe + * was already empty or not. * * If it wasn't empty we try to merge new data into * the last buffer. * * That naturally merges small writes, but it also - * page-aligs the rest of the writes for large writes + * page-aligns the rest of the writes for large writes * spanning multiple pages. */ head = pipe->head; - was_empty = pipe_empty(head, pipe->tail); + was_empty = true; chars = total_len & (PAGE_SIZE-1); - if (chars && !was_empty) { + if (chars && !pipe_empty(head, pipe->tail)) { unsigned int mask = pipe->ring_size - 1; struct pipe_buffer *buf = &pipe->bufs[(head - 1) & mask]; int offset = buf->offset + buf->len;
From: Desmond Cheong Zhi Xi desmondcheongzx@gmail.com
stable inclusion from stable-5.10.56 commit 4e1a57d75264dd4f10f3497c35dda521947368df bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit b2a616676839e2a6b02c8e40be7f886f882ed194 upstream.
When removing a writeable device in __btrfs_free_extra_devids, the rw device count should be decremented.
This error was caught by Syzbot which reported a warning in close_fs_devices:
WARNING: CPU: 1 PID: 9355 at fs/btrfs/volumes.c:1168 close_fs_devices+0x763/0x880 fs/btrfs/volumes.c:1168 Modules linked in: CPU: 0 PID: 9355 Comm: syz-executor552 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:close_fs_devices+0x763/0x880 fs/btrfs/volumes.c:1168 RSP: 0018:ffffc9000333f2f0 EFLAGS: 00010293 RAX: ffffffff8365f5c3 RBX: 0000000000000001 RCX: ffff888029afd4c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88802846f508 R08: ffffffff8365f525 R09: ffffed100337d128 R10: ffffed100337d128 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888019be8868 R14: 1ffff1100337d10d R15: 1ffff1100337d10a FS: 00007f6f53828700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000047c410 CR3: 00000000302a6000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_close_devices+0xc9/0x450 fs/btrfs/volumes.c:1180 open_ctree+0x8e1/0x3968 fs/btrfs/disk-io.c:3693 btrfs_fill_super fs/btrfs/super.c:1382 [inline] btrfs_mount_root+0xac5/0xc60 fs/btrfs/super.c:1749 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1498 fc_mount fs/namespace.c:993 [inline] vfs_kern_mount+0xc9/0x160 fs/namespace.c:1023 btrfs_mount+0x3d3/0xb50 fs/btrfs/super.c:1809 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1498 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x196f/0x2be0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3433 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae
Because fs_devices->rw_devices was not 0 after closing all devices. Here is the call trace that was observed:
btrfs_mount_root(): btrfs_scan_one_device(): device_list_add(); <---------------- device added btrfs_open_devices(): open_fs_devices(): btrfs_open_one_device(); <-------- writable device opened, rw device count ++ btrfs_fill_super(): open_ctree(): btrfs_free_extra_devids(): __btrfs_free_extra_devids(); <--- writable device removed, rw device count not decremented fail_tree_roots: btrfs_close_devices(): close_fs_devices(); <------- rw device count off by 1
As a note, prior to commit cf89af146b7e ("btrfs: dev-replace: fail mount if we don't have replace item with target device"), rw_devices was decremented on removing a writable device in __btrfs_free_extra_devids only if the BTRFS_DEV_STATE_REPLACE_TGT bit was not set for the device. However, this check does not need to be reinstated as it is now redundant and incorrect.
In __btrfs_free_extra_devids, we skip removing the device if it is the target for replacement. This is done by checking whether device->devid == BTRFS_DEV_REPLACE_DEVID. Since BTRFS_DEV_STATE_REPLACE_TGT is set only on the device with devid BTRFS_DEV_REPLACE_DEVID, no devices should have the BTRFS_DEV_STATE_REPLACE_TGT bit set after the check, and so it's redundant to test for that bit.
Additionally, following commit 82372bc816d7 ("Btrfs: make the logic of source device removing more clear"), rw_devices is incremented whenever a writeable device is added to the alloc list (including the target device in btrfs_dev_replace_finishing), so all removals of writable devices from the alloc list should also be accompanied by a decrement to rw_devices.
Reported-by: syzbot+a70e2ad0879f160b9217@syzkaller.appspotmail.com Fixes: cf89af146b7e ("btrfs: dev-replace: fail mount if we don't have replace item with target device") CC: stable@vger.kernel.org # 5.10+ Tested-by: syzbot+a70e2ad0879f160b9217@syzkaller.appspotmail.com Reviewed-by: Anand Jain anand.jain@oracle.com Signed-off-by: Desmond Cheong Zhi Xi desmondcheongzx@gmail.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/btrfs/volumes.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index f9ae3850526c..920c84fae710 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1077,6 +1077,7 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices, if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) { list_del_init(&device->dev_alloc_list); clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state); + fs_devices->rw_devices--; } list_del_init(&device->dev_list); fs_devices->num_devices--;
From: Goldwyn Rodrigues rgoldwyn@suse.de
stable inclusion from stable-5.10.56 commit 0a421a2fc516f39caf3d253c04b76a12fe632011 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 240246f6b913b0c23733cfd2def1d283f8cc9bbe upstream.
In compression write endio sequence, the range which the compressed_bio writes is marked as uptodate if the last bio of the compressed (sub)bios is completed successfully. There could be previous bio which may have failed which is recorded in cb->errors.
Set the writeback range as uptodate only if cb->errors is zero, as opposed to checking only the last bio's status.
Backporting notes: in all versions up to 4.4 the last argument is always replaced by "!cb->errors".
CC: stable@vger.kernel.org # 4.4+ Signed-off-by: Goldwyn Rodrigues rgoldwyn@suse.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/btrfs/compression.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 7bdc86b74f15..646416b5940e 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -340,7 +340,7 @@ static void end_compressed_bio_write(struct bio *bio) cb->compressed_pages[0]->mapping = cb->inode->i_mapping; btrfs_writepage_endio_finish_ordered(cb->compressed_pages[0], cb->start, cb->start + cb->len - 1, - bio->bi_status == BLK_STS_OK); + !cb->errors); cb->compressed_pages[0]->mapping = NULL;
end_compressed_writeback(inode, cb);
From: Hui Wang hui.wang@canonical.com
stable inclusion from stable-5.10.56 commit 0d6afa25975e73fef3537678e98386020661eed0 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit e0eef3690dc66b3ecc6e0f1267f332403eb22bea upstream.
The commit 0ec4e55e9f57 ("ACPI: resources: Add checks for ACPI IRQ override") introduces regression on some platforms, at least it makes the UART can't get correct irq setting on two different platforms, and it makes the kernel can't bootup on these two platforms.
This reverts commit 0ec4e55e9f571f08970ed115ec0addc691eda613.
Regression-discuss: https://bugzilla.kernel.org/show_bug.cgi?id=213031 Reported-by: PGNd pgnet.dev@gmail.com Cc: 5.4+ stable@vger.kernel.org # 5.4+ Signed-off-by: Hui Wang hui.wang@canonical.com Acked-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/acpi/resource.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index f0b2c3791253..20a7892c6d3f 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -423,13 +423,6 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, } }
-static bool irq_is_legacy(struct acpi_resource_irq *irq) -{ - return irq->triggering == ACPI_EDGE_SENSITIVE && - irq->polarity == ACPI_ACTIVE_HIGH && - irq->shareable == ACPI_EXCLUSIVE; -} - /** * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information. * @ares: Input ACPI resource object. @@ -468,7 +461,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, } acpi_dev_get_irqresource(res, irq->interrupts[index], irq->triggering, irq->polarity, - irq->shareable, irq_is_legacy(irq)); + irq->shareable, true); break; case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: ext_irq = &ares->data.extended_irq;
From: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com
stable inclusion from stable-5.10.56 commit 2388c7674fbdb9d8944caee768e599b02a21b33e bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 41a8457f3f6f829be1f8f8fa7577a46b9b7223ef upstream.
The current assumption that methods to read PCH FIVR attributes will return integer, is not correct. There is no good way to return integer as negative numbers are also valid.
These read methods return a package of integers. The first integer returns status, which is 0 on success and any other value for failure. When the returned status is zero, then the second integer returns the actual value.
This change fixes this issue by replacing acpi_evaluate_integer() with acpi_evaluate_object() and use acpi_extract_package() to extract results.
Fixes: 2ce6324eadb01 ("ACPI: DPTF: Add PCH FIVR participant driver") Signed-off-by: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com Cc: 5.10+ stable@vger.kernel.org # 5.10+ Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/acpi/dptf/dptf_pch_fivr.c | 51 ++++++++++++++++++++++++++----- 1 file changed, 43 insertions(+), 8 deletions(-)
diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c index 5fca18296bf6..550b9081fcbc 100644 --- a/drivers/acpi/dptf/dptf_pch_fivr.c +++ b/drivers/acpi/dptf/dptf_pch_fivr.c @@ -9,6 +9,42 @@ #include <linux/module.h> #include <linux/platform_device.h>
+struct pch_fivr_resp { + u64 status; + u64 result; +}; + +static int pch_fivr_read(acpi_handle handle, char *method, struct pch_fivr_resp *fivr_resp) +{ + struct acpi_buffer resp = { sizeof(struct pch_fivr_resp), fivr_resp}; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer format = { sizeof("NN"), "NN" }; + union acpi_object *obj; + acpi_status status; + int ret = -EFAULT; + + status = acpi_evaluate_object(handle, method, NULL, &buffer); + if (ACPI_FAILURE(status)) + return ret; + + obj = buffer.pointer; + if (!obj || obj->type != ACPI_TYPE_PACKAGE) + goto release_buffer; + + status = acpi_extract_package(obj, &format, &resp); + if (ACPI_FAILURE(status)) + goto release_buffer; + + if (fivr_resp->status) + goto release_buffer; + + ret = 0; + +release_buffer: + kfree(buffer.pointer); + return ret; +} + /* * Presentation of attributes which are defined for INT1045 * They are: @@ -23,15 +59,14 @@ static ssize_t name##_show(struct device *dev,\ char *buf)\ {\ struct acpi_device *acpi_dev = dev_get_drvdata(dev);\ - unsigned long long val;\ - acpi_status status;\ + struct pch_fivr_resp fivr_resp;\ + int status;\ \ - status = acpi_evaluate_integer(acpi_dev->handle, #method,\ - NULL, &val);\ - if (ACPI_SUCCESS(status))\ - return sprintf(buf, "%d\n", (int)val);\ - else\ - return -EINVAL;\ + status = pch_fivr_read(acpi_dev->handle, #method, &fivr_resp);\ + if (status)\ + return status;\ +\ + return sprintf(buf, "%llu\n", fivr_resp.result);\ }
#define PCH_FIVR_STORE(name, method) \
From: Juergen Gross jgross@suse.com
stable inclusion from stable-5.10.56 commit 7d67d4ab28e3c7daa6151d64e1be8da478b77f3d bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 76b4f357d0e7d8f6f0013c733e6cba1773c266d3 upstream.
KVM_MAX_VCPU_ID is the maximum vcpu-id of a guest, and not the number of vcpu-ids. Fix array indexed by vcpu-id to have KVM_MAX_VCPU_ID+1 elements.
Note that this is currently no real problem, as KVM_MAX_VCPU_ID is an odd number, resulting in always enough padding being available at the end of those arrays.
Nevertheless this should be fixed in order to avoid rare problems in case someone is using an even number for KVM_MAX_VCPU_ID.
Signed-off-by: Juergen Gross jgross@suse.com Message-Id: 20210701154105.23215-2-jgross@suse.com Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/x86/kvm/ioapic.c | 2 +- arch/x86/kvm/ioapic.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c index 698969e18fe3..ff005fe738a4 100644 --- a/arch/x86/kvm/ioapic.c +++ b/arch/x86/kvm/ioapic.c @@ -96,7 +96,7 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic, static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic) { ioapic->rtc_status.pending_eoi = 0; - bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPU_ID); + bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPU_ID + 1); }
static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic); diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h index 660401700075..11e4065e1617 100644 --- a/arch/x86/kvm/ioapic.h +++ b/arch/x86/kvm/ioapic.h @@ -43,13 +43,13 @@ struct kvm_vcpu;
struct dest_map { /* vcpu bitmap where IRQ has been sent */ - DECLARE_BITMAP(map, KVM_MAX_VCPU_ID); + DECLARE_BITMAP(map, KVM_MAX_VCPU_ID + 1);
/* * Vector sent to a given vcpu, only valid when * the vcpu's bit in map is set */ - u8 vectors[KVM_MAX_VCPU_ID]; + u8 vectors[KVM_MAX_VCPU_ID + 1]; };
From: Paolo Bonzini pbonzini@redhat.com
stable inclusion from stable-5.10.56 commit 52acb6c147b30aef1e178249620c81b41da4ae8b bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 8750f9bbda115f3f79bfe43be85551ee5e12b6ff upstream.
The arguments to the KVM_CLEAR_DIRTY_LOG ioctl include a pointer, therefore it needs a compat ioctl implementation. Otherwise, 32-bit userspace fails to invoke it on 64-bit kernels; for x86 it might work fine by chance if the padding is zero, but not on big-endian architectures.
Reported-by: Thomas Sattler Cc: stable@vger.kernel.org Fixes: 2a31b9db1535 ("kvm: introduce manual dirty log reprotect") Reviewed-by: Peter Xu peterx@redhat.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- virt/kvm/kvm_main.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index f5545dfb5091..9d4ab8dd5a3e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3907,6 +3907,16 @@ struct compat_kvm_dirty_log { }; };
+struct compat_kvm_clear_dirty_log { + __u32 slot; + __u32 num_pages; + __u64 first_page; + union { + compat_uptr_t dirty_bitmap; /* one bit per page */ + __u64 padding2; + }; +}; + static long kvm_vm_compat_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -3916,6 +3926,24 @@ static long kvm_vm_compat_ioctl(struct file *filp, if (kvm->mm != current->mm) return -EIO; switch (ioctl) { +#ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT + case KVM_CLEAR_DIRTY_LOG: { + struct compat_kvm_clear_dirty_log compat_log; + struct kvm_clear_dirty_log log; + + if (copy_from_user(&compat_log, (void __user *)arg, + sizeof(compat_log))) + return -EFAULT; + log.slot = compat_log.slot; + log.num_pages = compat_log.num_pages; + log.first_page = compat_log.first_page; + log.padding2 = compat_log.padding2; + log.dirty_bitmap = compat_ptr(compat_log.dirty_bitmap); + + r = kvm_vm_ioctl_clear_dirty_log(kvm, &log); + break; + } +#endif case KVM_GET_DIRTY_LOG: { struct compat_kvm_dirty_log compat_log; struct kvm_dirty_log log;
From: Junxiao Bi junxiao.bi@oracle.com
stable inclusion from stable-5.10.56 commit 94301459306115e007966bd607638232423d15d9 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit f267aeb6dea5e468793e5b8eb6a9c72c0020d418 upstream.
If append-dio feature is enabled, direct-io write and fallocate could run in parallel to extend file size, fallocate used "orig_isize" to record i_size before taking "ip_alloc_sem", when ocfs2_zeroout_partial_cluster() zeroout EOF blocks, i_size maybe already extended by ocfs2_dio_end_io_write(), that will cause valid data zeroed out.
Link: https://lkml.kernel.org/r/20210722054923.24389-1-junxiao.bi@oracle.com Fixes: 6bba4471f0cc ("ocfs2: fix data corruption by fallocate") Signed-off-by: Junxiao Bi junxiao.bi@oracle.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Changwei Ge gechangwei@live.cn Cc: Gang He ghe@suse.com Cc: Joel Becker jlbec@evilplan.org Cc: Jun Piao piaojun@huawei.com Cc: Mark Fasheh mark@fasheh.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/ocfs2/file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 2b296d720c9f..05d83a72984e 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1935,7 +1935,6 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, goto out_inode_unlock; }
- orig_isize = i_size_read(inode); switch (sr->l_whence) { case 0: /*SEEK_SET*/ break; @@ -1943,7 +1942,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, sr->l_start += f_pos; break; case 2: /*SEEK_END*/ - sr->l_start += orig_isize; + sr->l_start += i_size_read(inode); break; default: ret = -EINVAL; @@ -1998,6 +1997,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, ret = -EINVAL; }
+ orig_isize = i_size_read(inode); /* zeroout eof blocks in the cluster. */ if (!ret && change_size && orig_isize < size) { ret = ocfs2_zeroout_partial_cluster(inode, orig_isize,
From: Junxiao Bi junxiao.bi@oracle.com
stable inclusion from stable-5.10.56 commit da4f4916dab2b55cd38eec2f9a33800a7abc6bb9 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 9449ad33be8480f538b11a593e2dda2fb33ca06d upstream.
For punch holes in EOF blocks, fallocate used buffer write to zero the EOF blocks in last cluster. But since ->writepage will ignore EOF pages, those zeros will not be flushed.
This "looks" ok as commit 6bba4471f0cc ("ocfs2: fix data corruption by fallocate") will zero the EOF blocks when extend the file size, but it isn't. The problem happened on those EOF pages, before writeback, those pages had DIRTY flag set and all buffer_head in them also had DIRTY flag set, when writeback run by write_cache_pages(), DIRTY flag on the page was cleared, but DIRTY flag on the buffer_head not.
When next write happened to those EOF pages, since buffer_head already had DIRTY flag set, it would not mark page DIRTY again. That made writeback ignore them forever. That will cause data corruption. Even directio write can't work because it will fail when trying to drop pages caches before direct io, as it found the buffer_head for those pages still had DIRTY flag set, then it will fall back to buffer io mode.
To make a summary of the issue, as writeback ingores EOF pages, once any EOF page is generated, any write to it will only go to the page cache, it will never be flushed to disk even file size extends and that page is not EOF page any more. The fix is to avoid zero EOF blocks with buffer write.
The following code snippet from qemu-img could trigger the corruption.
656 open("6b3711ae-3306-4bdd-823c-cf1c0060a095.conv.2", O_RDWR|O_DIRECT|O_CLOEXEC) = 11 ... 660 fallocate(11, FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE, 2275868672, 327680 <unfinished ...> 660 fallocate(11, 0, 2275868672, 327680) = 0 658 pwrite64(11, "
Link: https://lkml.kernel.org/r/20210722054923.24389-2-junxiao.bi@oracle.com Signed-off-by: Junxiao Bi junxiao.bi@oracle.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Changwei Ge gechangwei@live.cn Cc: Gang He ghe@suse.com Cc: Jun Piao piaojun@huawei.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/ocfs2/file.c | 99 ++++++++++++++++++++++++++++++------------------- 1 file changed, 60 insertions(+), 39 deletions(-)
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 05d83a72984e..919e552abf63 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1529,6 +1529,45 @@ static void ocfs2_truncate_cluster_pages(struct inode *inode, u64 byte_start, } }
+/* + * zero out partial blocks of one cluster. + * + * start: file offset where zero starts, will be made upper block aligned. + * len: it will be trimmed to the end of current cluster if "start + len" + * is bigger than it. + */ +static int ocfs2_zeroout_partial_cluster(struct inode *inode, + u64 start, u64 len) +{ + int ret; + u64 start_block, end_block, nr_blocks; + u64 p_block, offset; + u32 cluster, p_cluster, nr_clusters; + struct super_block *sb = inode->i_sb; + u64 end = ocfs2_align_bytes_to_clusters(sb, start); + + if (start + len < end) + end = start + len; + + start_block = ocfs2_blocks_for_bytes(sb, start); + end_block = ocfs2_blocks_for_bytes(sb, end); + nr_blocks = end_block - start_block; + if (!nr_blocks) + return 0; + + cluster = ocfs2_bytes_to_clusters(sb, start); + ret = ocfs2_get_clusters(inode, cluster, &p_cluster, + &nr_clusters, NULL); + if (ret) + return ret; + if (!p_cluster) + return 0; + + offset = start_block - ocfs2_clusters_to_blocks(sb, cluster); + p_block = ocfs2_clusters_to_blocks(sb, p_cluster) + offset; + return sb_issue_zeroout(sb, p_block, nr_blocks, GFP_NOFS); +} + static int ocfs2_zero_partial_clusters(struct inode *inode, u64 start, u64 len) { @@ -1538,6 +1577,7 @@ static int ocfs2_zero_partial_clusters(struct inode *inode, struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); unsigned int csize = osb->s_clustersize; handle_t *handle; + loff_t isize = i_size_read(inode);
/* * The "start" and "end" values are NOT necessarily part of @@ -1558,6 +1598,26 @@ static int ocfs2_zero_partial_clusters(struct inode *inode, if ((start & (csize - 1)) == 0 && (end & (csize - 1)) == 0) goto out;
+ /* No page cache for EOF blocks, issue zero out to disk. */ + if (end > isize) { + /* + * zeroout eof blocks in last cluster starting from + * "isize" even "start" > "isize" because it is + * complicated to zeroout just at "start" as "start" + * may be not aligned with block size, buffer write + * would be required to do that, but out of eof buffer + * write is not supported. + */ + ret = ocfs2_zeroout_partial_cluster(inode, isize, + end - isize); + if (ret) { + mlog_errno(ret); + goto out; + } + if (start >= isize) + goto out; + end = isize; + } handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); if (IS_ERR(handle)) { ret = PTR_ERR(handle); @@ -1855,45 +1915,6 @@ int ocfs2_remove_inode_range(struct inode *inode, return ret; }
-/* - * zero out partial blocks of one cluster. - * - * start: file offset where zero starts, will be made upper block aligned. - * len: it will be trimmed to the end of current cluster if "start + len" - * is bigger than it. - */ -static int ocfs2_zeroout_partial_cluster(struct inode *inode, - u64 start, u64 len) -{ - int ret; - u64 start_block, end_block, nr_blocks; - u64 p_block, offset; - u32 cluster, p_cluster, nr_clusters; - struct super_block *sb = inode->i_sb; - u64 end = ocfs2_align_bytes_to_clusters(sb, start); - - if (start + len < end) - end = start + len; - - start_block = ocfs2_blocks_for_bytes(sb, start); - end_block = ocfs2_blocks_for_bytes(sb, end); - nr_blocks = end_block - start_block; - if (!nr_blocks) - return 0; - - cluster = ocfs2_bytes_to_clusters(sb, start); - ret = ocfs2_get_clusters(inode, cluster, &p_cluster, - &nr_clusters, NULL); - if (ret) - return ret; - if (!p_cluster) - return 0; - - offset = start_block - ocfs2_clusters_to_blocks(sb, cluster); - p_block = ocfs2_clusters_to_blocks(sb, p_cluster) + offset; - return sb_issue_zeroout(sb, p_block, nr_blocks, GFP_NOFS); -} - /* * Parts of this function taken from xfs_change_file_space() */
From: Zhang Changzhong zhangchangzhong@huawei.com
stable inclusion from stable-5.10.56 commit a9c02d0e1513df9b6124599ed2c05695d1d7ff0c bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit c6eea1c8bda56737752465a298dc6ce07d6b8ce3 upstream.
For receive side, the max time interval between two consecutive TP.DT should be 750ms.
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") Link: https://lore.kernel.org/r/1625569210-47506-1-git-send-email-zhangchangzhong@... Cc: linux-stable stable@vger.kernel.org Signed-off-by: Zhang Changzhong zhangchangzhong@huawei.com Acked-by: Oleksij Rempel o.rempel@pengutronix.de Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/can/j1939/transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c index c3946c355882..411322976950 100644 --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -1869,7 +1869,7 @@ static void j1939_xtp_rx_dat_one(struct j1939_session *session, if (!session->transmission) j1939_tp_schedule_txtimer(session, 0); } else { - j1939_tp_set_rxtimeout(session, 250); + j1939_tp_set_rxtimeout(session, 750); } session->last_cmd = 0xff; consume_skb(se_skb);
From: Ziyang Xuan william.xuanziyang@huawei.com
stable inclusion from stable-5.10.56 commit afe2ffd920615fb50d2f6d94588110b0cdcf5470 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 54f93336d000229f72c26d8a3f69dd256b744528 upstream.
We get a bug during ltp can_filter test as following.
=========================================== [60919.264984] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [60919.265223] PGD 8000003dda726067 P4D 8000003dda726067 PUD 3dda727067 PMD 0 [60919.265443] Oops: 0000 [#1] SMP PTI [60919.265550] CPU: 30 PID: 3638365 Comm: can_filter Kdump: loaded Tainted: G W 4.19.90+ #1 [60919.266068] RIP: 0010:selinux_socket_sock_rcv_skb+0x3e/0x200 [60919.293289] RSP: 0018:ffff8d53bfc03cf8 EFLAGS: 00010246 [60919.307140] RAX: 0000000000000000 RBX: 000000000000001d RCX: 0000000000000007 [60919.320756] RDX: 0000000000000001 RSI: ffff8d5104a8ed00 RDI: ffff8d53bfc03d30 [60919.334319] RBP: ffff8d9338056800 R08: ffff8d53bfc29d80 R09: 0000000000000001 [60919.347969] R10: ffff8d53bfc03ec0 R11: ffffb8526ef47c98 R12: ffff8d53bfc03d30 [60919.350320] perf: interrupt took too long (3063 > 2500), lowering kernel.perf_event_max_sample_rate to 65000 [60919.361148] R13: 0000000000000001 R14: ffff8d53bcf90000 R15: 0000000000000000 [60919.361151] FS: 00007fb78b6b3600(0000) GS:ffff8d53bfc00000(0000) knlGS:0000000000000000 [60919.400812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [60919.413730] CR2: 0000000000000010 CR3: 0000003e3f784006 CR4: 00000000007606e0 [60919.426479] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [60919.439339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [60919.451608] PKRU: 55555554 [60919.463622] Call Trace: [60919.475617] <IRQ> [60919.487122] ? update_load_avg+0x89/0x5d0 [60919.498478] ? update_load_avg+0x89/0x5d0 [60919.509822] ? account_entity_enqueue+0xc5/0xf0 [60919.520709] security_sock_rcv_skb+0x2a/0x40 [60919.531413] sk_filter_trim_cap+0x47/0x1b0 [60919.542178] ? kmem_cache_alloc+0x38/0x1b0 [60919.552444] sock_queue_rcv_skb+0x17/0x30 [60919.562477] raw_rcv+0x110/0x190 [can_raw] [60919.572539] can_rcv_filter+0xbc/0x1b0 [can] [60919.582173] can_receive+0x6b/0xb0 [can] [60919.591595] can_rcv+0x31/0x70 [can] [60919.600783] __netif_receive_skb_one_core+0x5a/0x80 [60919.609864] process_backlog+0x9b/0x150 [60919.618691] net_rx_action+0x156/0x400 [60919.627310] ? sched_clock_cpu+0xc/0xa0 [60919.635714] __do_softirq+0xe8/0x2e9 [60919.644161] do_softirq_own_stack+0x2a/0x40 [60919.652154] </IRQ> [60919.659899] do_softirq.part.17+0x4f/0x60 [60919.667475] __local_bh_enable_ip+0x60/0x70 [60919.675089] __dev_queue_xmit+0x539/0x920 [60919.682267] ? finish_wait+0x80/0x80 [60919.689218] ? finish_wait+0x80/0x80 [60919.695886] ? sock_alloc_send_pskb+0x211/0x230 [60919.702395] ? can_send+0xe5/0x1f0 [can] [60919.708882] can_send+0xe5/0x1f0 [can] [60919.715037] raw_sendmsg+0x16d/0x268 [can_raw]
It's because raw_setsockopt() concurrently with unregister_netdevice_many(). Concurrent scenario as following.
cpu0 cpu1 raw_bind raw_setsockopt unregister_netdevice_many unlist_netdevice dev_get_by_index raw_notifier raw_enable_filters ...... can_rx_register can_rcv_list_find(..., net->can.rx_alldev_list)
......
sock_close raw_release(sock_a)
......
can_receive can_rcv_filter(net->can.rx_alldev_list, ...) raw_rcv(skb, sock_a) BUG
After unlist_netdevice(), dev_get_by_index() return NULL in raw_setsockopt(). Function raw_enable_filters() will add sock and can_filter to net->can.rx_alldev_list. Then the sock is closed. Followed by, we sock_sendmsg() to a new vcan device use the same can_filter. Protocol stack match the old receiver whose sock has been released on net->can.rx_alldev_list in can_rcv_filter(). Function raw_rcv() uses the freed sock. UAF BUG is triggered.
We can find that the key issue is that net_device has not been protected in raw_setsockopt(). Use rtnl_lock to protect net_device in raw_setsockopt().
Fixes: c18ce101f2e4 ("[CAN]: Add raw protocol") Link: https://lore.kernel.org/r/20210722070819.1048263-1-william.xuanziyang@huawei... Cc: linux-stable stable@vger.kernel.org Signed-off-by: Ziyang Xuan william.xuanziyang@huawei.com Acked-by: Oliver Hartkopp socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/can/raw.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/net/can/raw.c b/net/can/raw.c index 4a7c063deb6c..069657f681af 100644 --- a/net/can/raw.c +++ b/net/can/raw.c @@ -546,10 +546,18 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, return -EFAULT; }
+ rtnl_lock(); lock_sock(sk);
- if (ro->bound && ro->ifindex) + if (ro->bound && ro->ifindex) { dev = dev_get_by_index(sock_net(sk), ro->ifindex); + if (!dev) { + if (count > 1) + kfree(filter); + err = -ENODEV; + goto out_fil; + } + }
if (ro->bound) { /* (try to) register the new filters */ @@ -588,6 +596,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, dev_put(dev);
release_sock(sk); + rtnl_unlock();
break;
@@ -600,10 +609,16 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
err_mask &= CAN_ERR_MASK;
+ rtnl_lock(); lock_sock(sk);
- if (ro->bound && ro->ifindex) + if (ro->bound && ro->ifindex) { dev = dev_get_by_index(sock_net(sk), ro->ifindex); + if (!dev) { + err = -ENODEV; + goto out_err; + } + }
/* remove current error mask */ if (ro->bound) { @@ -627,6 +642,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, dev_put(dev);
release_sock(sk); + rtnl_unlock();
break;
From: Stephane Grosjean s.grosjean@peak-system.com
stable inclusion from stable-5.10.56 commit 2fc2c2816cb76fd39bf446f12a72e3bd20b52018 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 590eb2b7d8cfafb27e8108d52d4bf4850626d31d upstream.
This patch fixes an incorrect way of reading error counters in messages received for this purpose from the PCAN-USB interface. These messages inform about the increase or decrease of the error counters, whose values are placed in bytes 1 and 2 of the message data (not 0 and 1).
Fixes: ea8b33bde76c ("can: pcan_usb: add support of rxerr/txerr counters") Link: https://lore.kernel.org/r/20210625130931.27438-4-s.grosjean@peak-system.com Cc: linux-stable stable@vger.kernel.org Signed-off-by: Stephane Grosjean s.grosjean@peak-system.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/usb/peak_usb/pcan_usb.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c index 63bd2ed96697..ce2d0761c4e5 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb.c @@ -117,7 +117,8 @@ MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB adapter"); #define PCAN_USB_BERR_MASK (PCAN_USB_ERR_RXERR | PCAN_USB_ERR_TXERR)
/* identify bus event packets with rx/tx error counters */ -#define PCAN_USB_ERR_CNT 0x80 +#define PCAN_USB_ERR_CNT_DEC 0x00 /* counters are decreasing */ +#define PCAN_USB_ERR_CNT_INC 0x80 /* counters are increasing */
/* private to PCAN-USB adapter */ struct pcan_usb { @@ -611,11 +612,12 @@ static int pcan_usb_handle_bus_evt(struct pcan_usb_msg_context *mc, u8 ir)
/* acccording to the content of the packet */ switch (ir) { - case PCAN_USB_ERR_CNT: + case PCAN_USB_ERR_CNT_DEC: + case PCAN_USB_ERR_CNT_INC:
/* save rx/tx error counters from in the device context */ - pdev->bec.rxerr = mc->ptr[0]; - pdev->bec.txerr = mc->ptr[1]; + pdev->bec.rxerr = mc->ptr[1]; + pdev->bec.txerr = mc->ptr[2]; break;
default:
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit a6ebfbdaca3da6ba66c68fbe6636217bcb98b06a bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit fc43fb69a7af92839551f99c1a96a37b77b3ae7a upstream.
Yasushi reported, that his Microchip CAN Analyzer stopped working since commit 91c02557174b ("can: mcba_usb: fix memory leak in mcba_usb"). The problem was in missing urb->transfer_dma initialization.
In my previous patch to this driver I refactored mcba_usb_start() code to avoid leaking usb coherent buffers. To archive it, I passed local stack variable to usb_alloc_coherent() and then saved it to private array to correctly free all coherent buffers on ->close() call. But I forgot to initialize urb->transfer_dma with variable passed to usb_alloc_coherent().
All of this was causing device to not work, since dma addr 0 is not valid and following log can be found on bug report page, which points exactly to problem described above.
| DMAR: [DMA Write] Request device [00:14.0] PASID ffffffff fault addr 0 [fault reason 05] PTE Write access is not set
Fixes: 91c02557174b ("can: mcba_usb: fix memory leak in mcba_usb") Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990850 Link: https://lore.kernel.org/r/20210725103630.23864-1-paskripkin@gmail.com Cc: linux-stable stable@vger.kernel.org Reported-by: Yasushi SHOJI yasushi.shoji@gmail.com Signed-off-by: Pavel Skripkin paskripkin@gmail.com Tested-by: Yasushi SHOJI yashi@spacecubics.com [mkl: fixed typos in commit message - thanks Yasushi SHOJI] Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/usb/mcba_usb.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c index 6d03f1d6c4d3..912160fd2ca0 100644 --- a/drivers/net/can/usb/mcba_usb.c +++ b/drivers/net/can/usb/mcba_usb.c @@ -653,6 +653,8 @@ static int mcba_usb_start(struct mcba_priv *priv) break; }
+ urb->transfer_dma = buf_dma; + usb_fill_bulk_urb(urb, priv->udev, usb_rcvbulkpipe(priv->udev, MCBA_USB_EP_IN), buf, MCBA_USB_RX_BUFF_SIZE,
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit f58ac91ff87daf7362b1acd6445d14f7cc90c6ad bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 0e865f0c31928d6a313269ef624907eec55287c4 upstream.
In usb_8dev_start() MAX_RX_URBS coherent buffers are allocated and there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all 2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER is not set (see usb_8dev_start) and this flag cannot be used with coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent() explicitly.
Side note: This code looks like a copy-paste of other can drivers. The same patch was applied to mcba_usb driver and it works nice with real hardware. There is no change in functionality, only clean-up code for coherent buffers.
Fixes: 0024d8ad1639 ("can: usb_8dev: Add support for USB2CAN interface from 8 devices") Link: https://lore.kernel.org/r/d39b458cd425a1cf7f512f340224e6e9563b07bd.162740447... Cc: linux-stable stable@vger.kernel.org Signed-off-by: Pavel Skripkin paskripkin@gmail.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/usb/usb_8dev.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index 62749c67c959..ca7c55d6a41d 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -137,7 +137,8 @@ struct usb_8dev_priv { u8 *cmd_msg_buffer;
struct mutex usb_8dev_cmd_lock; - + void *rxbuf[MAX_RX_URBS]; + dma_addr_t rxbuf_dma[MAX_RX_URBS]; };
/* tx frame */ @@ -733,6 +734,7 @@ static int usb_8dev_start(struct usb_8dev_priv *priv) for (i = 0; i < MAX_RX_URBS; i++) { struct urb *urb = NULL; u8 *buf; + dma_addr_t buf_dma;
/* create a URB, and a buffer for it */ urb = usb_alloc_urb(0, GFP_KERNEL); @@ -742,7 +744,7 @@ static int usb_8dev_start(struct usb_8dev_priv *priv) }
buf = usb_alloc_coherent(priv->udev, RX_BUFFER_SIZE, GFP_KERNEL, - &urb->transfer_dma); + &buf_dma); if (!buf) { netdev_err(netdev, "No memory left for USB buffer\n"); usb_free_urb(urb); @@ -750,6 +752,8 @@ static int usb_8dev_start(struct usb_8dev_priv *priv) break; }
+ urb->transfer_dma = buf_dma; + usb_fill_bulk_urb(urb, priv->udev, usb_rcvbulkpipe(priv->udev, USB_8DEV_ENDP_DATA_RX), @@ -767,6 +771,9 @@ static int usb_8dev_start(struct usb_8dev_priv *priv) break; }
+ priv->rxbuf[i] = buf; + priv->rxbuf_dma[i] = buf_dma; + /* Drop reference, USB core will take care of freeing it */ usb_free_urb(urb); } @@ -836,6 +843,10 @@ static void unlink_all_urbs(struct usb_8dev_priv *priv)
usb_kill_anchored_urbs(&priv->rx_submitted);
+ for (i = 0; i < MAX_RX_URBS; ++i) + usb_free_coherent(priv->udev, RX_BUFFER_SIZE, + priv->rxbuf[i], priv->rxbuf_dma[i]); + usb_kill_anchored_urbs(&priv->tx_submitted); atomic_set(&priv->active_tx_urbs, 0);
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit 88b40258162b277016bbec2a9679418c223dca25 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 9969e3c5f40c166e3396acc36c34f9de502929f6 upstream.
In ems_usb_start() MAX_RX_URBS coherent buffers are allocated and there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all 2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER is not set (see ems_usb_start) and this flag cannot be used with coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent() explicitly.
Side note: This code looks like a copy-paste of other can drivers. The same patch was applied to mcba_usb driver and it works nice with real hardware. There is no change in functionality, only clean-up code for coherent buffers.
Fixes: 702171adeed3 ("ems_usb: Added support for EMS CPC-USB/ARM7 CAN/USB interface") Link: https://lore.kernel.org/r/59aa9fbc9a8cbf9af2bbd2f61a659c480b415800.162740447... Cc: linux-stable stable@vger.kernel.org Signed-off-by: Pavel Skripkin paskripkin@gmail.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/usb/ems_usb.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index db9f15f17610..249d2fba28c7 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -255,6 +255,8 @@ struct ems_usb { unsigned int free_slots; /* remember number of available slots */
struct ems_cpc_msg active_params; /* active controller parameters */ + void *rxbuf[MAX_RX_URBS]; + dma_addr_t rxbuf_dma[MAX_RX_URBS]; };
static void ems_usb_read_interrupt_callback(struct urb *urb) @@ -587,6 +589,7 @@ static int ems_usb_start(struct ems_usb *dev) for (i = 0; i < MAX_RX_URBS; i++) { struct urb *urb = NULL; u8 *buf = NULL; + dma_addr_t buf_dma;
/* create a URB, and a buffer for it */ urb = usb_alloc_urb(0, GFP_KERNEL); @@ -596,7 +599,7 @@ static int ems_usb_start(struct ems_usb *dev) }
buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE, GFP_KERNEL, - &urb->transfer_dma); + &buf_dma); if (!buf) { netdev_err(netdev, "No memory left for USB buffer\n"); usb_free_urb(urb); @@ -604,6 +607,8 @@ static int ems_usb_start(struct ems_usb *dev) break; }
+ urb->transfer_dma = buf_dma; + usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, 2), buf, RX_BUFFER_SIZE, ems_usb_read_bulk_callback, dev); @@ -619,6 +624,9 @@ static int ems_usb_start(struct ems_usb *dev) break; }
+ dev->rxbuf[i] = buf; + dev->rxbuf_dma[i] = buf_dma; + /* Drop reference, USB core will take care of freeing it */ usb_free_urb(urb); } @@ -684,6 +692,10 @@ static void unlink_all_urbs(struct ems_usb *dev)
usb_kill_anchored_urbs(&dev->rx_submitted);
+ for (i = 0; i < MAX_RX_URBS; ++i) + usb_free_coherent(dev->udev, RX_BUFFER_SIZE, + dev->rxbuf[i], dev->rxbuf_dma[i]); + usb_kill_anchored_urbs(&dev->tx_submitted); atomic_set(&dev->active_tx_urbs, 0);
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit 30e19d072ea08766adcb280f4562b05fba88d37d bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 928150fad41ba16df7fcc9f7f945747d0f56cbb6 upstream.
In esd_usb2_setup_rx_urbs() MAX_RX_URBS coherent buffers are allocated and there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all 2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER is not set (see esd_usb2_setup_rx_urbs) and this flag cannot be used with coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent() explicitly.
Side note: This code looks like a copy-paste of other can drivers. The same patch was applied to mcba_usb driver and it works nice with real hardware. There is no change in functionality, only clean-up code for coherent buffers.
Fixes: 96d8e90382dc ("can: Add driver for esd CAN-USB/2 device") Link: https://lore.kernel.org/r/b31b096926dcb35998ad0271aac4b51770ca7cc8.162740447... Cc: linux-stable stable@vger.kernel.org Signed-off-by: Pavel Skripkin paskripkin@gmail.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/usb/esd_usb2.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c index b5d7ed21d7d9..485e20e0dec2 100644 --- a/drivers/net/can/usb/esd_usb2.c +++ b/drivers/net/can/usb/esd_usb2.c @@ -195,6 +195,8 @@ struct esd_usb2 { int net_count; u32 version; int rxinitdone; + void *rxbuf[MAX_RX_URBS]; + dma_addr_t rxbuf_dma[MAX_RX_URBS]; };
struct esd_usb2_net_priv { @@ -544,6 +546,7 @@ static int esd_usb2_setup_rx_urbs(struct esd_usb2 *dev) for (i = 0; i < MAX_RX_URBS; i++) { struct urb *urb = NULL; u8 *buf = NULL; + dma_addr_t buf_dma;
/* create a URB, and a buffer for it */ urb = usb_alloc_urb(0, GFP_KERNEL); @@ -553,7 +556,7 @@ static int esd_usb2_setup_rx_urbs(struct esd_usb2 *dev) }
buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE, GFP_KERNEL, - &urb->transfer_dma); + &buf_dma); if (!buf) { dev_warn(dev->udev->dev.parent, "No memory left for USB buffer\n"); @@ -561,6 +564,8 @@ static int esd_usb2_setup_rx_urbs(struct esd_usb2 *dev) goto freeurb; }
+ urb->transfer_dma = buf_dma; + usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), buf, RX_BUFFER_SIZE, @@ -573,8 +578,12 @@ static int esd_usb2_setup_rx_urbs(struct esd_usb2 *dev) usb_unanchor_urb(urb); usb_free_coherent(dev->udev, RX_BUFFER_SIZE, buf, urb->transfer_dma); + goto freeurb; }
+ dev->rxbuf[i] = buf; + dev->rxbuf_dma[i] = buf_dma; + freeurb: /* Drop reference, USB core will take care of freeing it */ usb_free_urb(urb); @@ -662,6 +671,11 @@ static void unlink_all_urbs(struct esd_usb2 *dev) int i, j;
usb_kill_anchored_urbs(&dev->rx_submitted); + + for (i = 0; i < MAX_RX_URBS; ++i) + usb_free_coherent(dev->udev, RX_BUFFER_SIZE, + dev->rxbuf[i], dev->rxbuf_dma[i]); + for (i = 0; i < dev->net_count; i++) { priv = dev->nets[i]; if (priv) {
From: Mike Rapoport rppt@linux.ibm.com
stable inclusion from stable-5.10.56 commit 7bca5da0053941131ba30479b22ac7091a2da91b bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 640b7ea5f888b521dcf28e2564ce75d08a783fd7 upstream.
The memory reserved by console/PALcode or non-volatile memory is not added to memblock.memory.
Since commit fa3354e4ea39 (mm: free_area_init: use maximal zone PFNs rather than zone sizes) the initialization of the memory map relies on the accuracy of memblock.memory to properly calculate zone sizes. The holes in memblock.memory caused by absent regions reserved by the firmware cause incorrect initialization of struct pages which leads to BUG() during the initial page freeing:
BUG: Bad page state in process swapper pfn:2ffc53 page:fffffc000ecf14c0 refcount:0 mapcount:1 mapping:0000000000000000 index:0x0 flags: 0x0() raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-03841-gfa3354e4ea39-dirty #26 fffffc0001b5bd68 fffffc0001b5be80 fffffc00011cd148 fffffc000ecf14c0 fffffc00019803df fffffc0001b5be80 fffffc00011ce340 fffffc000ecf14c0 0000000000000000 fffffc0001b5be80 fffffc0001b482c0 fffffc00027d6618 fffffc00027da7d0 00000000002ff97a 0000000000000000 fffffc0001b5be80 fffffc00011d1abc fffffc000ecf14c0 fffffc0002d00000 fffffc0001b5be80 fffffc0001b2350c 0000000000300000 fffffc0001b48298 fffffc0001b482c0 Trace: [<fffffc00011cd148>] bad_page+0x168/0x1b0 [<fffffc00011ce340>] free_pcp_prepare+0x1e0/0x290 [<fffffc00011d1abc>] free_unref_page+0x2c/0xa0 [<fffffc00014ee5f0>] cmp_ex_sort+0x0/0x30 [<fffffc00014ee5f0>] cmp_ex_sort+0x0/0x30 [<fffffc000101001c>] _stext+0x1c/0x20
Fix this by registering the reserved ranges in memblock.memory.
Link: https://lore.kernel.org/lkml/20210726192311.uffqnanxw3ac5wwi@ivybridge Fixes: fa3354e4ea39 ("mm: free_area_init: use maximal zone PFNs rather than zone sizes") Reported-by: Matt Turner mattst88@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Mike Rapoport rppt@linux.ibm.com Signed-off-by: Matt Turner mattst88@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/alpha/kernel/setup.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c index 916e42d74a86..7eea28d6f6c8 100644 --- a/arch/alpha/kernel/setup.c +++ b/arch/alpha/kernel/setup.c @@ -325,18 +325,19 @@ setup_memory(void *kernel_end) i, cluster->usage, cluster->start_pfn, cluster->start_pfn + cluster->numpages);
- /* Bit 0 is console/PALcode reserved. Bit 1 is - non-volatile memory -- we might want to mark - this for later. */ - if (cluster->usage & 3) - continue; - end = cluster->start_pfn + cluster->numpages; if (end > max_low_pfn) max_low_pfn = end;
memblock_add(PFN_PHYS(cluster->start_pfn), cluster->numpages << PAGE_SHIFT); + + /* Bit 0 is console/PALcode reserved. Bit 1 is + non-volatile memory -- we might want to mark + this for later. */ + if (cluster->usage & 3) + memblock_reserve(PFN_PHYS(cluster->start_pfn), + cluster->numpages << PAGE_SHIFT); }
/*
From: Jason Gerecke killertofu@gmail.com
stable inclusion from stable-5.10.56 commit cb71730a6312ae363f31350976cb378e53be7433 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 6ca2350e11f09d5d3e53777d1eff8ff6d300ed93 upstream.
Commit 670e90924bfe ("HID: wacom: support named keys on older devices") added support for sending named events from the soft buttons on the 24HDT and 27QHDT. In the process, however, it inadvertantly disabled the touchscreen of the 24HDT and 27QHDT by default. The `wacom_set_shared_values` function would normally enable touch by default but because it checks the state of the non-shared `has_mute_touch_switch` flag and `wacom_setup_touch_input_capabilities` sets the state of the /shared/ version, touch ends up being disabled by default.
This patch sets the non-shared flag, letting `wacom_set_shared_values` take care of copying the value over to the shared version and setting the default touch state to "on".
Fixes: 670e90924bfe ("HID: wacom: support named keys on older devices") CC: stable@vger.kernel.org # 5.4+ Signed-off-by: Jason Gerecke jason.gerecke@wacom.com Reviewed-by: Ping Cheng ping.cheng@wacom.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/hid/wacom_wac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 2d70dc4bea65..4228ddc3df0e 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -3829,7 +3829,7 @@ int wacom_setup_touch_input_capabilities(struct input_dev *input_dev, wacom_wac->shared->touch->product == 0xF6) { input_dev->evbit[0] |= BIT_MASK(EV_SW); __set_bit(SW_MUTE_DEVICE, input_dev->swbit); - wacom_wac->shared->has_mute_touch_switch = true; + wacom_wac->has_mute_touch_switch = true; } fallthrough;
From: Paul Jakma paul@jakma.org
stable inclusion from stable-5.10.56 commit 2eab387507fd449e08014cca0de79a37b2d27744 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 15bbf8bb4d4ab87108ecf5f4155ec8ffa3c141d6 upstream.
Commit 7930742d6, reverting 26fd962, missed out on reverting an incorrect change to a return value. The niu_pci_vpd_scan_props(..) == 1 case appears to be a normal path - treating it as an error and return -EINVAL was breaking VPD_SCAN and causing the driver to fail to load.
Fix, so my Neptune card works again.
Cc: Kangjie Lu kjlu@umn.edu Cc: Shannon Nelson shannon.lee.nelson@gmail.com Cc: David S. Miller davem@davemloft.net Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: stable stable@vger.kernel.org Fixes: 7930742d ('Revert "niu: fix missing checks of niu_pci_eeprom_read"') Signed-off-by: Paul Jakma paul@jakma.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/sun/niu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index 74e748662ec0..860644d182ab 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -8191,8 +8191,9 @@ static int niu_pci_vpd_fetch(struct niu *np, u32 start) err = niu_pci_vpd_scan_props(np, here, end); if (err < 0) return err; + /* ret == 1 is not an error */ if (err == 1) - return -EINVAL; + return 0; } return 0; }
From: Dale Zhao dale.zhao@amd.com
stable inclusion from stable-5.10.56 commit 63570e578094b4f0b6b8c6ac4a68195455733e31 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit b53e041d8e4308f7324999398aec092dbcb130f5 upstream.
[Why] We don't check DENTIST_DISPCLK_CHG_DONE to ensure dentist display clockis updated to target value. In some scenarios with large display clock margin, it will deliver unfinished display clock and cause issues like display black screen.
[How] Checking DENTIST_DISPCLK_CHG_DONE to ensure display clock has been update to target value before driver do other clock related actions.
Reviewed-by: Cyr Aric aric.cyr@amd.com Acked-by: Solomon Chiu solomon.chiu@amd.com Signed-off-by: Dale Zhao dale.zhao@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c index f2114bc910bf..6b744edcd75f 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c @@ -135,7 +135,7 @@ void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr)
REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, dispclk_wdivider); -// REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 5, 100); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 50, 1000); REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_WDIVIDER, dppclk_wdivider); REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_CHG_DONE, 1, 5, 100);
From: Jiri Kosina jkosina@suse.cz
stable inclusion from stable-5.10.56 commit ccc7a1bb322e4169b738aa3fc8b5dfcfefdacb37 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 6aade587d329ebe88319dfdb8e8c7b6aede80417 upstream.
In case when psp_init_asd_microcode() fails to load ASD microcode file, psp_v12_0_init_microcode() tries to print the firmware filename that failed to load before bailing out.
This is wrong because:
- the firmware filename it would want it print is an incorrect one as psp_init_asd_microcode() and psp_v12_0_init_microcode() are loading different filenames - it tries to print fw_name, but that's not yet been initialized by that time, so it prints random stack contents, e.g.
amdgpu 0000:04:00.0: Direct firmware load for amdgpu/renoir_asd.bin failed with error -2 amdgpu 0000:04:00.0: amdgpu: fail to initialize asd microcode amdgpu 0000:04:00.0: amdgpu: psp v12.0: Failed to load firmware "\xfeTO\x8e\xff\xff"
Fix that by bailing out immediately, instead of priting the bogus error message.
Reported-by: Vojtech Pavlik vojtech@ucw.cz Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c index c4828bd3264b..b0ee77ee80b9 100644 --- a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c @@ -67,7 +67,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp)
err = psp_init_asd_microcode(psp, chip_name); if (err) - goto out; + return err;
snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name); err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev); @@ -80,7 +80,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) } else { err = amdgpu_ucode_validate(adev->psp.ta_fw); if (err) - goto out2; + goto out;
ta_hdr = (const struct ta_firmware_header_v1_0 *) adev->psp.ta_fw->data; @@ -105,10 +105,9 @@ static int psp_v12_0_init_microcode(struct psp_context *psp)
return 0;
-out2: +out: release_firmware(adev->psp.ta_fw); adev->psp.ta_fw = NULL; -out: if (err) { dev_err(adev->dev, "psp v12.0: Failed to load firmware "%s"\n",
From: Jiri Kosina jkosina@suse.cz
stable inclusion from stable-5.10.56 commit fc2756cce06f9833ebabd309b5b5080ed5c56897 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit d47255d3f87338164762ac56df1f28d751e27246 upstream.
This reverts commit 4192f7b5768912ceda82be2f83c87ea7181f9980.
It is not true (as stated in the reverted commit changelog) that we never unmap the BAR on failure; it actually does happen properly on amdgpu_driver_load_kms() -> amdgpu_driver_unload_kms() -> amdgpu_device_fini() error path.
What's worse, this commit actually completely breaks resource freeing on probe failure (like e.g. failure to load microcode), as amdgpu_driver_unload_kms() notices adev->rmmio being NULL and bails too early, leaving all the resources that'd normally be freed in amdgpu_acpi_fini() and amdgpu_device_fini() still hanging around, leading to all sorts of oopses when someone tries to, for example, access the sysfs and procfs resources which are still around while the driver is gone.
Fixes: 4192f7b57689 ("drm/amdgpu: unmap register bar on device init failure") Reported-by: Vojtech Pavlik vojtech@ucw.cz Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 6948ab3c0d99..ffd310279a69 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3322,13 +3322,13 @@ int amdgpu_device_init(struct amdgpu_device *adev, r = amdgpu_device_get_job_timeout_settings(adev); if (r) { dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n"); - goto failed_unmap; + return r; }
/* early init functions */ r = amdgpu_device_ip_early_init(adev); if (r) - goto failed_unmap; + return r;
/* doorbell bar mapping and doorbell index init*/ amdgpu_device_doorbell_init(adev); @@ -3532,10 +3532,6 @@ int amdgpu_device_init(struct amdgpu_device *adev, if (boco) vga_switcheroo_fini_domain_pm_ops(adev->dev);
-failed_unmap: - iounmap(adev->rmmio); - adev->rmmio = NULL; - return r; }
From: Tejun Heo tj@kernel.org
stable inclusion from stable-5.10.56 commit ea04a3b5727e571f628e59b907db9f0c8bdd0d5d bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 5ab189cf3abbc9994bae3be524c5b88589ed56e2 upstream.
iocg_wake_fn() open-codes wait_queue_entry removal and wakeup because it wants the wq_entry to be always removed whether it ended up waking the task or not. finish_wait() tests whether wq_entry needs removal without grabbing the wait_queue lock and expects the waker to use list_del_init_careful() after all waking operations are complete, which iocg_wake_fn() didn't do. The operation order was wrong and the regular list_del_init() was used.
The result is that if a waiter wakes up racing the waker, it can free pop the wq_entry off stack before the waker is still looking at it, which can lead to a backtrace like the following.
[7312084.588951] general protection fault, probably for non-canonical address 0x586bf4005b2b88: 0000 [#1] SMP ... [7312084.647079] RIP: 0010:queued_spin_lock_slowpath+0x171/0x1b0 ... [7312084.858314] Call Trace: [7312084.863548] _raw_spin_lock_irqsave+0x22/0x30 [7312084.872605] try_to_wake_up+0x4c/0x4f0 [7312084.880444] iocg_wake_fn+0x71/0x80 [7312084.887763] __wake_up_common+0x71/0x140 [7312084.895951] iocg_kick_waitq+0xe8/0x2b0 [7312084.903964] ioc_rqos_throttle+0x275/0x650 [7312084.922423] __rq_qos_throttle+0x20/0x30 [7312084.930608] blk_mq_make_request+0x120/0x650 [7312084.939490] generic_make_request+0xca/0x310 [7312084.957600] submit_bio+0x173/0x200 [7312084.981806] swap_readpage+0x15c/0x240 [7312084.989646] read_swap_cache_async+0x58/0x60 [7312084.998527] swap_cluster_readahead+0x201/0x320 [7312085.023432] swapin_readahead+0x2df/0x450 [7312085.040672] do_swap_page+0x52f/0x820 [7312085.058259] handle_mm_fault+0xa16/0x1420 [7312085.066620] do_page_fault+0x2c6/0x5c0 [7312085.074459] page_fault+0x2f/0x40
Fix it by switching to list_del_init_careful() and putting it at the end.
Signed-off-by: Tejun Heo tj@kernel.org Reported-by: Rik van Riel riel@surriel.com Fixes: 7caa47151ab2 ("blkcg: implement blk-iocost") Cc: stable@vger.kernel.org # v5.4+ Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- block/blk-iocost.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index aaae531135aa..b7d8a954d99c 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -1394,16 +1394,17 @@ static int iocg_wake_fn(struct wait_queue_entry *wq_entry, unsigned mode, return -1;
iocg_commit_bio(ctx->iocg, wait->bio, wait->abs_cost, cost); + wait->committed = true;
/* * autoremove_wake_function() removes the wait entry only when it - * actually changed the task state. We want the wait always - * removed. Remove explicitly and use default_wake_function(). + * actually changed the task state. We want the wait always removed. + * Remove explicitly and use default_wake_function(). Note that the + * order of operations is important as finish_wait() tests whether + * @wq_entry is removed without grabbing the lock. */ - list_del_init(&wq_entry->entry); - wait->committed = true; - default_wake_function(wq_entry, mode, flags, key); + list_del_init_careful(&wq_entry->entry); return 0; }
From: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com
stable inclusion from stable-5.10.56 commit 9ab284bc35307ffde4f385dd8f3cf853fd9bb264 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 5e7b30d24a5b8cb691c173b45b50e3ca0191be19 upstream.
There is a use after free memory corruption during module exit: - nfcsim_exit() - nfcsim_device_free(dev0) - nfc_digital_unregister_device() This iterates over command queue and frees all commands, - dev->up = false - nfcsim_link_shutdown() - nfcsim_link_recv_wake() This wakes the sleeping thread nfcsim_link_recv_skb().
- nfcsim_link_recv_skb() Wake from wait_event_interruptible_timeout(), call directly the deb->cb callback even though (dev->up == false), - digital_send_cmd_complete() Dereference of "struct digital_cmd" cmd which was freed earlier by nfc_digital_unregister_device().
This causes memory corruption shortly after (with unrelated stack trace):
nfc nfc0: NFC: nfcsim_recv_wq: Device is down llcp: nfc_llcp_recv: err -19 nfc nfc1: NFC: nfcsim_recv_wq: Device is down BUG: unable to handle page fault for address: ffffffffffffffed Call Trace: fsnotify+0x54b/0x5c0 __fsnotify_parent+0x1fe/0x300 ? vfs_write+0x27c/0x390 vfs_write+0x27c/0x390 ksys_write+0x63/0xe0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae
KASAN report:
BUG: KASAN: use-after-free in digital_send_cmd_complete+0x16/0x50 Write of size 8 at addr ffff88800a05f720 by task kworker/0:2/71 Workqueue: events nfcsim_recv_wq [nfcsim] Call Trace: dump_stack_lvl+0x45/0x59 print_address_description.constprop.0+0x21/0x140 ? digital_send_cmd_complete+0x16/0x50 ? digital_send_cmd_complete+0x16/0x50 kasan_report.cold+0x7f/0x11b ? digital_send_cmd_complete+0x16/0x50 ? digital_dep_link_down+0x60/0x60 digital_send_cmd_complete+0x16/0x50 nfcsim_recv_wq+0x38f/0x3d5 [nfcsim] ? nfcsim_in_send_cmd+0x4a/0x4a [nfcsim] ? lock_is_held_type+0x98/0x110 ? finish_wait+0x110/0x110 ? rcu_read_lock_sched_held+0x9c/0xd0 ? rcu_read_lock_bh_held+0xb0/0xb0 ? lockdep_hardirqs_on_prepare+0x12e/0x1f0
This flow of calling digital_send_cmd_complete() callback on driver exit is specific to nfcsim which implements reading and sending work queues. Since the NFC digital device was unregistered, the callback should not be called.
Fixes: 204bddcb508f ("NFC: nfcsim: Make use of the Digital layer") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/nfc/nfcsim.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c index a9864fcdfba6..dd27c85190d3 100644 --- a/drivers/nfc/nfcsim.c +++ b/drivers/nfc/nfcsim.c @@ -192,8 +192,7 @@ static void nfcsim_recv_wq(struct work_struct *work)
if (!IS_ERR(skb)) dev_kfree_skb(skb); - - skb = ERR_PTR(-ENODEV); + return; }
dev->cb(dev->nfc_digital_dev, dev->arg, skb);
From: Nguyen Dinh Phi phind.uet@gmail.com
stable inclusion from stable-5.10.56 commit c8667cb406fdae6718e7dbd4d0b2c85ad1eb9d9d bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit f9a5c358c8d26fed0cc45f2afc64633d4ba21dff upstream.
When we exceed the limit of BSS entries, this function will free the new entry, however, at this time, it is the last door to access the inputed ies, so these ies will be unreferenced objects and cause memory leak. Therefore we should free its ies before deallocating the new entry, beside of dropping it from hidden_list.
Signed-off-by: Nguyen Dinh Phi phind.uet@gmail.com Link: https://lore.kernel.org/r/20210628132334.851095-1-phind.uet@gmail.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/wireless/scan.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 87fc56bc4f1e..fab1f0d50403 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1746,16 +1746,14 @@ cfg80211_bss_update(struct cfg80211_registered_device *rdev, * be grouped with this beacon for updates ... */ if (!cfg80211_combine_bsses(rdev, new)) { - kfree(new); + bss_ref_put(rdev, new); goto drop; } }
if (rdev->bss_entries >= bss_entries_limit && !cfg80211_bss_expire_oldest(rdev)) { - if (!list_empty(&new->hidden_list)) - list_del(&new->hidden_list); - kfree(new); + bss_ref_put(rdev, new); goto drop; }
From: Naresh Kumar PBS nareshkumar.pbs@broadcom.com
stable inclusion from stable-5.10.56 commit e6a06a13ec6f6a9b88d5fdc11e3ea0cc8860890e bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 0c23af52ccd1605926480b5dfd1dd857ef604611 ]
Statistical counters are not incrementing in some adapter versions with newer FW. This is due to the stats context length mismatch between FW and driver. Since the L2 driver updates the length correctly, use the stats length from L2 driver while allocating the DMA'able memory and creating the stats context.
Fixes: 9d6b648c3112 ("bnxt_en: Update firmware interface spec to 1.10.1.65.") Link: https://lore.kernel.org/r/1626010296-6076-1-git-send-email-selvin.xavier@bro... Signed-off-by: Naresh Kumar PBS nareshkumar.pbs@broadcom.com Signed-off-by: Selvin Xavier selvin.xavier@broadcom.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/infiniband/hw/bnxt_re/main.c | 4 +++- drivers/infiniband/hw/bnxt_re/qplib_res.c | 10 ++++------ drivers/infiniband/hw/bnxt_re/qplib_res.h | 1 + 3 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index 04621ba8fa76..1fadca8af71a 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -119,6 +119,7 @@ static int bnxt_re_setup_chip_ctx(struct bnxt_re_dev *rdev, u8 wqe_mode) if (!chip_ctx) return -ENOMEM; chip_ctx->chip_num = bp->chip_num; + chip_ctx->hw_stats_size = bp->hw_ring_stats_size;
rdev->chip_ctx = chip_ctx; /* rest members to follow eventually */ @@ -507,6 +508,7 @@ static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev, dma_addr_t dma_map, u32 *fw_stats_ctx_id) { + struct bnxt_qplib_chip_ctx *chip_ctx = rdev->chip_ctx; struct hwrm_stat_ctx_alloc_output resp = {0}; struct hwrm_stat_ctx_alloc_input req = {0}; struct bnxt_en_dev *en_dev = rdev->en_dev; @@ -523,7 +525,7 @@ static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev, bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1); req.update_period_ms = cpu_to_le32(1000); req.stats_dma_addr = cpu_to_le64(dma_map); - req.stats_dma_length = cpu_to_le16(sizeof(struct ctx_hw_stats_ext)); + req.stats_dma_length = cpu_to_le16(chip_ctx->hw_stats_size); req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE; bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.c b/drivers/infiniband/hw/bnxt_re/qplib_res.c index 3ca47004b752..754dcebeb4ca 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_res.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_res.c @@ -56,6 +56,7 @@ static void bnxt_qplib_free_stats_ctx(struct pci_dev *pdev, struct bnxt_qplib_stats *stats); static int bnxt_qplib_alloc_stats_ctx(struct pci_dev *pdev, + struct bnxt_qplib_chip_ctx *cctx, struct bnxt_qplib_stats *stats);
/* PBL */ @@ -559,7 +560,7 @@ int bnxt_qplib_alloc_ctx(struct bnxt_qplib_res *res, goto fail; stats_alloc: /* Stats */ - rc = bnxt_qplib_alloc_stats_ctx(res->pdev, &ctx->stats); + rc = bnxt_qplib_alloc_stats_ctx(res->pdev, res->cctx, &ctx->stats); if (rc) goto fail;
@@ -889,15 +890,12 @@ static void bnxt_qplib_free_stats_ctx(struct pci_dev *pdev, }
static int bnxt_qplib_alloc_stats_ctx(struct pci_dev *pdev, + struct bnxt_qplib_chip_ctx *cctx, struct bnxt_qplib_stats *stats) { memset(stats, 0, sizeof(*stats)); stats->fw_id = -1; - /* 128 byte aligned context memory is required only for 57500. - * However making this unconditional, it does not harm previous - * generation. - */ - stats->size = ALIGN(sizeof(struct ctx_hw_stats), 128); + stats->size = cctx->hw_stats_size; stats->dma = dma_alloc_coherent(&pdev->dev, stats->size, &stats->dma_map, GFP_KERNEL); if (!stats->dma) { diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h index 7a1ab38b95da..58bad6f78456 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_res.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h @@ -60,6 +60,7 @@ struct bnxt_qplib_chip_ctx { u16 chip_num; u8 chip_rev; u8 chip_metal; + u16 hw_stats_size; struct bnxt_qplib_drv_modes modes; };
From: Lorenz Bauer lmb@cloudflare.com
stable inclusion from stable-5.10.56 commit 076bc6ebce48e8144ba9d73c4f37f3a7b7ea66bf bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit d6371c76e20d7d3f61b05fd67b596af4d14a8886 ]
We got the following UBSAN report on one of our testing machines:
================================================================================ UBSAN: array-index-out-of-bounds in kernel/bpf/syscall.c:2389:24 index 6 is out of range for type 'char *[6]' CPU: 43 PID: 930921 Comm: systemd-coredum Tainted: G O 5.10.48-cloudflare-kasan-2021.7.0 #1 Hardware name: <snip> Call Trace: dump_stack+0x7d/0xa3 ubsan_epilogue+0x5/0x40 __ubsan_handle_out_of_bounds.cold+0x43/0x48 ? seq_printf+0x17d/0x250 bpf_link_show_fdinfo+0x329/0x380 ? bpf_map_value_size+0xe0/0xe0 ? put_files_struct+0x20/0x2d0 ? __kasan_kmalloc.constprop.0+0xc2/0xd0 seq_show+0x3f7/0x540 seq_read_iter+0x3f8/0x1040 seq_read+0x329/0x500 ? seq_read_iter+0x1040/0x1040 ? __fsnotify_parent+0x80/0x820 ? __fsnotify_update_child_dentry_flags+0x380/0x380 vfs_read+0x123/0x460 ksys_read+0xed/0x1c0 ? __x64_sys_pwrite64+0x1f0/0x1f0 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 <snip> ================================================================================ ================================================================================ UBSAN: object-size-mismatch in kernel/bpf/syscall.c:2384:2
From the report, we can infer that some array access in bpf_link_show_fdinfo at index 6 is out of bounds. The obvious candidate is bpf_link_type_strs[BPF_LINK_TYPE_XDP] with BPF_LINK_TYPE_XDP == 6. It turns out that BPF_LINK_TYPE_XDP is missing from bpf_types.h and therefore doesn't have an entry in bpf_link_type_strs:
pos: 0 flags: 02000000 mnt_id: 13 link_type: (null) link_id: 4 prog_tag: bcf7977d3b93787c prog_id: 4 ifindex: 1
Fixes: aa8d3a716b59 ("bpf, xdp: Add bpf_link-based XDP attachment API") Signed-off-by: Lorenz Bauer lmb@cloudflare.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Link: https://lore.kernel.org/bpf/20210719085134.43325-2-lmb@cloudflare.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/linux/bpf_types.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index 2e6f568377f1..a8137bb6dd3c 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -133,4 +133,5 @@ BPF_LINK_TYPE(BPF_LINK_TYPE_CGROUP, cgroup) BPF_LINK_TYPE(BPF_LINK_TYPE_ITER, iter) #ifdef CONFIG_NET BPF_LINK_TYPE(BPF_LINK_TYPE_NETNS, netns) +BPF_LINK_TYPE(BPF_LINK_TYPE_XDP, xdp) #endif
From: Felix Fietkau nbd@nbd.name
stable inclusion from stable-5.10.56 commit ac038f4152efd8b4ad86e50df913bd318dc6daa8 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit a5d3cbdb09ff1f52cbe040932e06c8b9915c6dad ]
Notify the driver about the 4-address mode change and also send a nulldata packet to the AP to notify it about the change
Fixes: 1ff4e8f2dec8 ("mac80211: notify the driver when a sta uses 4-address mode") Signed-off-by: Felix Fietkau nbd@nbd.name Link: https://lore.kernel.org/r/20210702050111.47546-1-nbd@nbd.name Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/mac80211/cfg.c | 19 +++++++++++++++++++ net/mac80211/ieee80211_i.h | 2 ++ net/mac80211/mlme.c | 4 ++-- 3 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 6a96deded763..e429dbb10df7 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -152,6 +152,8 @@ static int ieee80211_change_iface(struct wiphy *wiphy, struct vif_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; int ret;
ret = ieee80211_if_change_type(sdata, type); @@ -162,7 +164,24 @@ static int ieee80211_change_iface(struct wiphy *wiphy, RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); ieee80211_check_fast_rx_iface(sdata); } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + if (params->use_4addr == ifmgd->use_4addr) + return 0; + sdata->u.mgd.use_4addr = params->use_4addr; + if (!ifmgd->associated) + return 0; + + mutex_lock(&local->sta_mtx); + sta = sta_info_get(sdata, ifmgd->bssid); + if (sta) + drv_sta_set_4addr(local, sdata, &sta->sta, + params->use_4addr); + mutex_unlock(&local->sta_mtx); + + if (params->use_4addr) + ieee80211_send_4addr_nullfunc(local, sdata); }
if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index a83f0c2fcdf7..7f2be08b72a5 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -2051,6 +2051,8 @@ void ieee80211_dynamic_ps_timer(struct timer_list *t); void ieee80211_send_nullfunc(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, bool powersave); +void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata); void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 142bb28199c4..32bc30ec50ec 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1115,8 +1115,8 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, ieee80211_tx_skb(sdata, skb); }
-static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata) +void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) { struct sk_buff *skb; struct ieee80211_hdr *nullfunc;
From: Florian Westphal fw@strlen.de
stable inclusion from stable-5.10.56 commit 3dbda8483f4256530a926dcb6063656a17fe62d9 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 30a56a2b881821625f79837d4d968c679852444e ]
In case the entry is evicted via garbage collection there is delay between the timeout value and the eviction event.
This adjusts the stop value based on how much time has passed.
Fixes: b87a2f9199ea82 ("netfilter: conntrack: add gc worker to remove timed-out entries") Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/netfilter/nf_conntrack_core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index ff0168736f6e..f9f2af26ccb3 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -661,8 +661,13 @@ bool nf_ct_delete(struct nf_conn *ct, u32 portid, int report) return false;
tstamp = nf_conn_tstamp_find(ct); - if (tstamp && tstamp->stop == 0) + if (tstamp) { + s32 timeout = ct->timeout - nfct_time_stamp; + tstamp->stop = ktime_get_real_ns(); + if (timeout < 0) + tstamp->stop -= jiffies_to_nsecs(-timeout); + }
if (nf_conntrack_event_report(IPCT_DESTROY, ct, portid, report) < 0) {
From: Pablo Neira Ayuso pablo@netfilter.org
stable inclusion from stable-5.10.56 commit cbc8012902b34516cae039f12435b78be80493a3 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit a33f387ecd5aafae514095c2c4a8c24f7aea7e8b ]
nft_nat reports a bogus EAFNOSUPPORT if no layer 3 information is specified.
Fixes: d07db9884a5f ("netfilter: nf_tables: introduce nft_validate_register_load()") Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/netfilter/nft_nat.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c index 4bcf33b049c4..ea53fd999f46 100644 --- a/net/netfilter/nft_nat.c +++ b/net/netfilter/nft_nat.c @@ -201,7 +201,9 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr, alen = sizeof_field(struct nf_nat_range, min_addr.ip6); break; default: - return -EAFNOSUPPORT; + if (tb[NFTA_NAT_REG_ADDR_MIN]) + return -EAFNOSUPPORT; + break; } priv->family = family;
From: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com
stable inclusion from stable-5.10.56 commit e090ffdf056361230797fc170b226bd6ab81b4aa bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 65662a8dcdd01342b71ee44234bcfd0162e195af ]
Correct the message flow between driver and firmware when disabling queues.
Previously in case of PF reset (due to required reinit after reconfig), the error like: "VSI seid 397 Tx ring 60 disable timeout" could show up occasionally. The error was not a real issue of hardware or firmware, it was caused by wrong sequence of messages invoked by the driver.
Fixes: 41c445ff0f48 ("i40e: main driver core") Signed-off-by: Aleksandr Loktionov aleksandr.loktionov@intel.com Signed-off-by: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com Tested-by: Tony Brelinski tonyx.brelinski@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/intel/i40e/i40e_main.c | 58 ++++++++++++--------- 1 file changed, 34 insertions(+), 24 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 52e31f712a54..112a18dd13c4 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -4425,11 +4425,10 @@ int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q, }
/** - * i40e_vsi_control_tx - Start or stop a VSI's rings + * i40e_vsi_enable_tx - Start a VSI's rings * @vsi: the VSI being configured - * @enable: start or stop the rings **/ -static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable) +static int i40e_vsi_enable_tx(struct i40e_vsi *vsi) { struct i40e_pf *pf = vsi->back; int i, pf_q, ret = 0; @@ -4438,7 +4437,7 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable) for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) { ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q, - false /*is xdp*/, enable); + false /*is xdp*/, true); if (ret) break;
@@ -4447,7 +4446,7 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q + vsi->alloc_queue_pairs, - true /*is xdp*/, enable); + true /*is xdp*/, true); if (ret) break; } @@ -4545,32 +4544,25 @@ int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable) }
/** - * i40e_vsi_control_rx - Start or stop a VSI's rings + * i40e_vsi_enable_rx - Start a VSI's rings * @vsi: the VSI being configured - * @enable: start or stop the rings **/ -static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable) +static int i40e_vsi_enable_rx(struct i40e_vsi *vsi) { struct i40e_pf *pf = vsi->back; int i, pf_q, ret = 0;
pf_q = vsi->base_queue; for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) { - ret = i40e_control_wait_rx_q(pf, pf_q, enable); + ret = i40e_control_wait_rx_q(pf, pf_q, true); if (ret) { dev_info(&pf->pdev->dev, - "VSI seid %d Rx ring %d %sable timeout\n", - vsi->seid, pf_q, (enable ? "en" : "dis")); + "VSI seid %d Rx ring %d enable timeout\n", + vsi->seid, pf_q); break; } }
- /* Due to HW errata, on Rx disable only, the register can indicate done - * before it really is. Needs 50ms to be sure - */ - if (!enable) - mdelay(50); - return ret; }
@@ -4583,29 +4575,47 @@ int i40e_vsi_start_rings(struct i40e_vsi *vsi) int ret = 0;
/* do rx first for enable and last for disable */ - ret = i40e_vsi_control_rx(vsi, true); + ret = i40e_vsi_enable_rx(vsi); if (ret) return ret; - ret = i40e_vsi_control_tx(vsi, true); + ret = i40e_vsi_enable_tx(vsi);
return ret; }
+#define I40E_DISABLE_TX_GAP_MSEC 50 + /** * i40e_vsi_stop_rings - Stop a VSI's rings * @vsi: the VSI being configured **/ void i40e_vsi_stop_rings(struct i40e_vsi *vsi) { + struct i40e_pf *pf = vsi->back; + int pf_q, err, q_end; + /* When port TX is suspended, don't wait */ if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state)) return i40e_vsi_stop_rings_no_wait(vsi);
- /* do rx first for enable and last for disable - * Ignore return value, we need to shutdown whatever we can - */ - i40e_vsi_control_tx(vsi, false); - i40e_vsi_control_rx(vsi, false); + q_end = vsi->base_queue + vsi->num_queue_pairs; + for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) + i40e_pre_tx_queue_cfg(&pf->hw, (u32)pf_q, false); + + for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) { + err = i40e_control_wait_rx_q(pf, pf_q, false); + if (err) + dev_info(&pf->pdev->dev, + "VSI seid %d Rx ring %d dissable timeout\n", + vsi->seid, pf_q); + } + + msleep(I40E_DISABLE_TX_GAP_MSEC); + pf_q = vsi->base_queue; + for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) + wr32(&pf->hw, I40E_QTX_ENA(pf_q), 0); + + i40e_vsi_wait_queues_disabled(vsi); }
/**
From: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com
stable inclusion from stable-5.10.56 commit 4382cca179153d08e0a938d4e97514e5d31e08e2 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 71d6fdba4b2d82fdd883fec31dee77fbcf59773a ]
Make warning meaningful for the user.
Previously the trace: "Starting FW LLDP agent failed: error: I40E_ERR_ADMIN_QUEUE_ERROR, I40E_AQ_RC_EAGAIN" was produced when user tried to start Firmware LLDP agent, just after it was stopped with sequence: ethtool --set-priv-flags <dev> disable-fw-lldp on ethtool --set-priv-flags <dev> disable-fw-lldp off (without any delay between the commands) At that point the firmware is still processing stop command, the behavior is expected.
Fixes: c1041d070437 ("i40e: Missing response checks in driver when starting/stopping FW LLDP") Signed-off-by: Aleksandr Loktionov aleksandr.loktionov@intel.com Signed-off-by: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com Tested-by: Imam Hassan Reza Biswas imam.hassan.reza.biswas@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 4811d0ae6abb..57edca02e3a7 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -5114,6 +5114,10 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags) dev_warn(&pf->pdev->dev, "Device configuration forbids SW from starting the LLDP agent.\n"); return -EINVAL; + case I40E_AQ_RC_EAGAIN: + dev_warn(&pf->pdev->dev, + "Stop FW LLDP agent command is still being processed, please try again in a second.\n"); + return -EBUSY; default: dev_warn(&pf->pdev->dev, "Starting FW LLDP agent failed: error: %s, %s\n",
From: Jedrzej Jagielski jedrzej.jagielski@intel.com
stable inclusion from stable-5.10.56 commit c1cc6bce1afd096b2a3a482de6278e4d181e33ff bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 89ec1f0886c127c7e41ac61a6b6d539f4fb2510b ]
In SW DCB mode the packets sent receive incorrect UP tags. They are constructed correctly and put into tx_ring, but UP is later remapped by HW on the basis of TCTUPR register contents according to Tx queue selected, and BW used is consistent with the new UP values. This is caused by Tx queue selection in kernel not taking into account DCB configuration. This patch fixes the issue by implementing the ndo_select_queue NDO callback.
Fixes: fd0a05ce74ef ("i40e: transmit, receive, and NAPI") Signed-off-by: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com Signed-off-by: Jedrzej Jagielski jedrzej.jagielski@intel.com Tested-by: Imam Hassan Reza Biswas imam.hassan.reza.biswas@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/intel/i40e/i40e_main.c | 1 + drivers/net/ethernet/intel/i40e/i40e_txrx.c | 50 +++++++++++++++++++++ drivers/net/ethernet/intel/i40e/i40e_txrx.h | 2 + 3 files changed, 53 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 112a18dd13c4..b3a9dec414a5 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -12809,6 +12809,7 @@ static const struct net_device_ops i40e_netdev_ops = { .ndo_poll_controller = i40e_netpoll, #endif .ndo_setup_tc = __i40e_setup_tc, + .ndo_select_queue = i40e_lan_select_queue, .ndo_set_features = i40e_set_features, .ndo_set_vf_mac = i40e_ndo_set_vf_mac, .ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan, diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index ba8b4eef7ae2..008616782036 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -3511,6 +3511,56 @@ static inline int i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb, return -1; }
+static u16 i40e_swdcb_skb_tx_hash(struct net_device *dev, + const struct sk_buff *skb, + u16 num_tx_queues) +{ + u32 jhash_initval_salt = 0xd631614b; + u32 hash; + + if (skb->sk && skb->sk->sk_hash) + hash = skb->sk->sk_hash; + else + hash = (__force u16)skb->protocol ^ skb->hash; + + hash = jhash_1word(hash, jhash_initval_salt); + + return (u16)(((u64)hash * num_tx_queues) >> 32); +} + +u16 i40e_lan_select_queue(struct net_device *netdev, + struct sk_buff *skb, + struct net_device __always_unused *sb_dev) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_hw *hw; + u16 qoffset; + u16 qcount; + u8 tclass; + u16 hash; + u8 prio; + + /* is DCB enabled at all? */ + if (vsi->tc_config.numtc == 1) + return i40e_swdcb_skb_tx_hash(netdev, skb, + netdev->real_num_tx_queues); + + prio = skb->priority; + hw = &vsi->back->hw; + tclass = hw->local_dcbx_config.etscfg.prioritytable[prio]; + /* sanity check */ + if (unlikely(!(vsi->tc_config.enabled_tc & BIT(tclass)))) + tclass = 0; + + /* select a queue assigned for the given TC */ + qcount = vsi->tc_config.tc_info[tclass].qcount; + hash = i40e_swdcb_skb_tx_hash(netdev, skb, qcount); + + qoffset = vsi->tc_config.tc_info[tclass].qoffset; + return qoffset + hash; +} + /** * i40e_xmit_xdp_ring - transmits an XDP buffer to an XDP Tx ring * @xdpf: data to transmit diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index 2feed920ef8a..93ac201f68b8 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -449,6 +449,8 @@ static inline unsigned int i40e_rx_pg_order(struct i40e_ring *ring)
bool i40e_alloc_rx_buffers(struct i40e_ring *rxr, u16 cleaned_count); netdev_tx_t i40e_lan_xmit_frame(struct sk_buff *skb, struct net_device *netdev); +u16 i40e_lan_select_queue(struct net_device *netdev, struct sk_buff *skb, + struct net_device *sb_dev); void i40e_clean_tx_ring(struct i40e_ring *tx_ring); void i40e_clean_rx_ring(struct i40e_ring *rx_ring); int i40e_setup_tx_descriptors(struct i40e_ring *tx_ring);
From: Jedrzej Jagielski jedrzej.jagielski@intel.com
stable inclusion from stable-5.10.56 commit bb60616162113653d181fe7490354ef57e520fa9 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit ea52faae1d17cd3048681d86d2e8641f44de484d ]
Fix missing failed message if driver does not have enough queues to complete TC command. Without this fix no message is displayed in dmesg.
Fixes: a9ce82f744dc ("i40e: Enable 'channel' mode in mqprio for TC configs") Signed-off-by: Grzegorz Szczurek grzegorzx.szczurek@intel.com Signed-off-by: Jedrzej Jagielski jedrzej.jagielski@intel.com Tested-by: Imam Hassan Reza Biswas imam.hassan.reza.biswas@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/intel/i40e/i40e_main.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index b3a9dec414a5..bc648ce0743c 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -6933,6 +6933,8 @@ static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi, } if (vsi->num_queue_pairs < (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) { + dev_err(&vsi->back->pdev->dev, + "Failed to create traffic channel, insufficient number of queues.\n"); return -EINVAL; } if (sum_max_rate > i40e_get_link_speed(vsi)) {
From: Xin Long lucien.xin@gmail.com
stable inclusion from stable-5.10.56 commit 10f585740cf0bf5b037a70a4d4eb3096fd713490 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f8dd60de194817c86bf812700980762bb5a8d9a4 ]
For implicit-connect, when it's either SYN- or SYN+, an ACK should be sent back to the client immediately. It's not appropriate for the client to enter established state only after receiving data from the server.
On client side, after the SYN is sent out, tipc_wait_for_connect() should be called to wait for the ACK if timeout is set.
This patch also restricts __tipc_sendstream() to call __sendmsg() only when it's in TIPC_OPEN state, so that the client can program in a single loop doing both connecting and data sending like:
for (...) sendmsg(dest, buf);
This makes the implicit-connect more implicit.
Fixes: b97bf3fd8f6a ("[TIPC] Initial merge") Signed-off-by: Xin Long lucien.xin@gmail.com Acked-by: Jon Maloy jmaloy@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/tipc/socket.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 9f7cc9e1e4ef..694c432b9710 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -148,6 +148,7 @@ static void tipc_sk_remove(struct tipc_sock *tsk); static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dsz); static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dsz); static void tipc_sk_push_backlog(struct tipc_sock *tsk, bool nagle_ack); +static int tipc_wait_for_connect(struct socket *sock, long *timeo_p);
static const struct proto_ops packet_ops; static const struct proto_ops stream_ops; @@ -1508,8 +1509,13 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen) rc = 0; }
- if (unlikely(syn && !rc)) + if (unlikely(syn && !rc)) { tipc_set_sk_state(sk, TIPC_CONNECTING); + if (timeout) { + timeout = msecs_to_jiffies(timeout); + tipc_wait_for_connect(sock, &timeout); + } + }
return rc ? rc : dlen; } @@ -1557,7 +1563,7 @@ static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dlen) return -EMSGSIZE;
/* Handle implicit connection setup */ - if (unlikely(dest)) { + if (unlikely(dest && sk->sk_state == TIPC_OPEN)) { rc = __tipc_sendmsg(sock, m, dlen); if (dlen && dlen == rc) { tsk->peer_caps = tipc_node_get_capabilities(net, dnode); @@ -2686,9 +2692,10 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags, bool kern) { struct sock *new_sk, *sk = sock->sk; - struct sk_buff *buf; struct tipc_sock *new_tsock; + struct msghdr m = {NULL,}; struct tipc_msg *msg; + struct sk_buff *buf; long timeo; int res;
@@ -2733,19 +2740,17 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags, }
/* - * Respond to 'SYN-' by discarding it & returning 'ACK'-. - * Respond to 'SYN+' by queuing it on new socket. + * Respond to 'SYN-' by discarding it & returning 'ACK'. + * Respond to 'SYN+' by queuing it on new socket & returning 'ACK'. */ if (!msg_data_sz(msg)) { - struct msghdr m = {NULL,}; - tsk_advance_rx_queue(sk); - __tipc_sendstream(new_sock, &m, 0); } else { __skb_dequeue(&sk->sk_receive_queue); __skb_queue_head(&new_sk->sk_receive_queue, buf); skb_set_owner_r(buf, new_sk); } + __tipc_sendstream(new_sock, &m, 0); release_sock(new_sk); exit: release_sock(sk);
From: Hoang Le hoang.h.le@dektech.com.au
stable inclusion from stable-5.10.56 commit a41282e82a1d13ad2cca0f07879d7042780d8e78 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit d237a7f11719ff9320721be5818352e48071aab6 ]
The release_sock() is blocking function, it would change the state after sleeping. In order to evaluate the stated condition outside the socket lock context, switch to use wait_woken() instead.
Fixes: 6398e23cdb1d8 ("tipc: standardize accept routine") Acked-by: Jon Maloy jmaloy@redhat.com Signed-off-by: Hoang Le hoang.h.le@dektech.com.au Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/tipc/socket.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 694c432b9710..4f9bd95b4eee 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -2650,7 +2650,7 @@ static int tipc_listen(struct socket *sock, int len) static int tipc_wait_for_accept(struct socket *sock, long timeo) { struct sock *sk = sock->sk; - DEFINE_WAIT(wait); + DEFINE_WAIT_FUNC(wait, woken_wake_function); int err;
/* True wake-one mechanism for incoming connections: only @@ -2659,12 +2659,12 @@ static int tipc_wait_for_accept(struct socket *sock, long timeo) * anymore, the common case will execute the loop only once. */ for (;;) { - prepare_to_wait_exclusive(sk_sleep(sk), &wait, - TASK_INTERRUPTIBLE); if (timeo && skb_queue_empty(&sk->sk_receive_queue)) { + add_wait_queue(sk_sleep(sk), &wait); release_sock(sk); - timeo = schedule_timeout(timeo); + timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); lock_sock(sk); + remove_wait_queue(sk_sleep(sk), &wait); } err = 0; if (!skb_queue_empty(&sk->sk_receive_queue)) @@ -2676,7 +2676,6 @@ static int tipc_wait_for_accept(struct socket *sock, long timeo) if (signal_pending(current)) break; } - finish_wait(sk_sleep(sk), &wait); return err; }
From: Gilad Naaman gnaaman@drivenets.com
stable inclusion from stable-5.10.56 commit 91350564ea8c0d72b9d60d1bace5adb090c97193 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 227adfb2b1dfbc53dfc53b9dd7a93a6298ff7c56 ]
In cases where the header straight after the tunnel header was another ethernet header (TEB), instead of the network header, the ECN decapsulation code would treat the ethernet header as if it was an IP header, resulting in mishandling and possible wrong drops or corruption of the IP header.
In this case, ECT(1) is sent, so IP_ECN_decapsulate tries to copy it to the inner IPv4 header, and correct its checksum.
The offset of the ECT bits in an IPv4 header corresponds to the lower 2 bits of the second octet of the destination MAC address in the ethernet header. The IPv4 checksum corresponds to end of the source address.
In order to reproduce:
$ ip netns add A $ ip netns add B $ ip -n A link add _v0 type veth peer name _v1 netns B $ ip -n A link set _v0 up $ ip -n A addr add dev _v0 10.254.3.1/24 $ ip -n A route add default dev _v0 scope global $ ip -n B link set _v1 up $ ip -n B addr add dev _v1 10.254.1.6/24 $ ip -n B route add default dev _v1 scope global $ ip -n B link add gre1 type gretap local 10.254.1.6 remote 10.254.3.1 key 0x49000000 $ ip -n B link set gre1 up
# Now send an IPv4/GRE/Eth/IPv4 frame where the outer header has ECT(1), # and the inner header has no ECT bits set:
$ cat send_pkt.py #!/usr/bin/env python3 from scapy.all import *
pkt = IP(b'E\x01\x00\xa7\x00\x00\x00\x00@/`%\n\xfe\x03\x01\n\xfe\x01\x06 \x00eXI\x00' b'\x00\x00\x18\xbe\x92\xa0\xee&\x18\xb0\x92\xa0l&\x08\x00E\x00\x00}\x8b\x85' b'@\x00\x01\x01\xe4\xf2\x82\x82\x82\x01\x82\x82\x82\x02\x08\x00d\x11\xa6\xeb' b'3\x1e\x1e\xf3\xf7`\x00\x00\x00\x00ZN\x00\x00\x00\x00\x00\x00\x10\x11\x12' b'\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&'()*+,-./01234' b'56789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ')
send(pkt) $ sudo ip netns exec B tcpdump -neqlllvi gre1 icmp & ; sleep 1 $ sudo ip netns exec A python3 send_pkt.py
In the original packet, the source/destinatio MAC addresses are dst=18:be:92:a0:ee:26 src=18:b0:92:a0:6c:26
In the received packet, they are dst=18:bd:92:a0:ee:26 src=18:b0:92:a0:6c:27
Thanks to Lahav Schlesinger lschlesinger@drivenets.com and Isaac Garzon isaac@speed.io for helping me pinpoint the origin.
Fixes: b723748750ec ("tunnel: Propagate ECT(1) when decapsulating as recommended by RFC6040") Cc: David S. Miller davem@davemloft.net Cc: Hideaki YOSHIFUJI yoshfuji@linux-ipv6.org Cc: David Ahern dsahern@kernel.org Cc: Jakub Kicinski kuba@kernel.org Cc: Toke Høiland-Jørgensen toke@redhat.com Signed-off-by: Gilad Naaman gnaaman@drivenets.com Acked-by: Toke Høiland-Jørgensen toke@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/ipv4/ip_tunnel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index 0dca00745ac3..be75b409445c 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -390,7 +390,7 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb, tunnel->i_seqno = ntohl(tpi->seq) + 1; }
- skb_reset_network_header(skb); + skb_set_network_header(skb, (tunnel->dev->type == ARPHRD_ETHER) ? ETH_HLEN : 0);
err = IP_ECN_decapsulate(iph, skb); if (unlikely(err)) {
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit 6961323eed46d6aee7b87ec758580d334579438c bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 52f3456a96c06760b9bfae460e39596fec7af22e ]
Syzbot reported memory leak in qrtr. The problem was in unputted struct sock. qrtr_local_enqueue() function calls qrtr_port_lookup() which takes sock reference if port was found. Then there is the following check:
if (!ipc || &ipc->sk == skb->sk) { ... return -ENODEV; }
Since we should drop the reference before returning from this function and ipc can be non-NULL inside this if, we should add qrtr_port_put() inside this if.
The similar corner case is in qrtr_endpoint_post() as Manivannan reported. In case of sock_queue_rcv_skb() failure we need to put port reference to avoid leaking struct sock pointer.
Fixes: e04df98adf7d ("net: qrtr: Remove receive worker") Fixes: bdabad3e363d ("net: Add Qualcomm IPC router") Reported-and-tested-by: syzbot+35a511c72ea7356cdcf3@syzkaller.appspotmail.com Signed-off-by: Pavel Skripkin paskripkin@gmail.com Reviewed-by: Manivannan Sadhasivam mani@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/qrtr/qrtr.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c index 0d9baddb9cd4..6826558483f9 100644 --- a/net/qrtr/qrtr.c +++ b/net/qrtr/qrtr.c @@ -504,8 +504,10 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len) if (!ipc) goto err;
- if (sock_queue_rcv_skb(&ipc->sk, skb)) + if (sock_queue_rcv_skb(&ipc->sk, skb)) { + qrtr_port_put(ipc); goto err; + }
qrtr_port_put(ipc); } @@ -830,6 +832,8 @@ static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb,
ipc = qrtr_port_lookup(to->sq_port); if (!ipc || &ipc->sk == skb->sk) { /* do not send to self */ + if (ipc) + qrtr_port_put(ipc); kfree_skb(skb); return -ENODEV; }
From: Shannon Nelson snelson@pensando.io
stable inclusion from stable-5.10.56 commit a7c85a516cd0e7dc73912311f8b1ab40b6b53cad bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit a6ff85e0a2d9d074a4b4c291ba9ec1e5b0aba22b ]
Move the interrupt coalesce value update out of the napi thread and into the dim_work thread and set it only when it has actually changed.
Fixes: 04a834592bf5 ("ionic: dynamic interrupt moderation") Signed-off-by: Shannon Nelson snelson@pensando.io Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 14 +++++++++++++- drivers/net/ethernet/pensando/ionic/ionic_txrx.c | 4 ---- 2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index d0ae1cf43592..6dc7ce649448 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -52,7 +52,19 @@ static void ionic_dim_work(struct work_struct *work) cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); qcq = container_of(dim, struct ionic_qcq, dim); new_coal = ionic_coal_usec_to_hw(qcq->q.lif->ionic, cur_moder.usec); - qcq->intr.dim_coal_hw = new_coal ? new_coal : 1; + new_coal = new_coal ? new_coal : 1; + + if (qcq->intr.dim_coal_hw != new_coal) { + unsigned int qi = qcq->cq.bound_q->index; + struct ionic_lif *lif = qcq->q.lif; + + qcq->intr.dim_coal_hw = new_coal; + + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->rxqcqs[qi]->intr.index, + qcq->intr.dim_coal_hw); + } + dim->state = DIM_START_MEASURE; }
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c index 9dedaedc47a9..1a06a0197778 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c @@ -429,10 +429,6 @@ static void ionic_dim_update(struct ionic_qcq *qcq) lif = qcq->q.lif; qi = qcq->cq.bound_q->index;
- ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, - lif->rxqcqs[qi]->intr.index, - qcq->intr.dim_coal_hw); - dim_update_sample(qcq->cq.bound_intr->rearm_count, lif->txqstats[qi].pkts, lif->txqstats[qi].bytes,
From: Shannon Nelson snelson@pensando.io
stable inclusion from stable-5.10.56 commit 60decbe01d7d711d4626a855213350ea02bfd41c bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 76ed8a4a00b484dcccef819ef2618bcf8e46f560 ]
We need to count the correct Tx and/or Rx packets for dynamic interrupt moderation, depending on which we're processing on the queue interrupt.
Fixes: 04a834592bf5 ("ionic: dynamic interrupt moderation") Signed-off-by: Shannon Nelson snelson@pensando.io Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- .../net/ethernet/pensando/ionic/ionic_txrx.c | 28 ++++++++++++++----- 1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c index 1a06a0197778..c447a8ab1b17 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c @@ -417,11 +417,12 @@ void ionic_rx_empty(struct ionic_queue *q) } }
-static void ionic_dim_update(struct ionic_qcq *qcq) +static void ionic_dim_update(struct ionic_qcq *qcq, int napi_mode) { struct dim_sample dim_sample; struct ionic_lif *lif; unsigned int qi; + u64 pkts, bytes;
if (!qcq->intr.dim_coal_hw) return; @@ -429,10 +430,23 @@ static void ionic_dim_update(struct ionic_qcq *qcq) lif = qcq->q.lif; qi = qcq->cq.bound_q->index;
+ switch (napi_mode) { + case IONIC_LIF_F_TX_DIM_INTR: + pkts = lif->txqstats[qi].pkts; + bytes = lif->txqstats[qi].bytes; + break; + case IONIC_LIF_F_RX_DIM_INTR: + pkts = lif->rxqstats[qi].pkts; + bytes = lif->rxqstats[qi].bytes; + break; + default: + pkts = lif->txqstats[qi].pkts + lif->rxqstats[qi].pkts; + bytes = lif->txqstats[qi].bytes + lif->rxqstats[qi].bytes; + break; + } + dim_update_sample(qcq->cq.bound_intr->rearm_count, - lif->txqstats[qi].pkts, - lif->txqstats[qi].bytes, - &dim_sample); + pkts, bytes, &dim_sample);
net_dim(&qcq->dim, dim_sample); } @@ -453,7 +467,7 @@ int ionic_tx_napi(struct napi_struct *napi, int budget) ionic_tx_service, NULL, NULL);
if (work_done < budget && napi_complete_done(napi, work_done)) { - ionic_dim_update(qcq); + ionic_dim_update(qcq, IONIC_LIF_F_TX_DIM_INTR); flags |= IONIC_INTR_CRED_UNMASK; cq->bound_intr->rearm_count++; } @@ -489,7 +503,7 @@ int ionic_rx_napi(struct napi_struct *napi, int budget) ionic_rx_fill(cq->bound_q);
if (work_done < budget && napi_complete_done(napi, work_done)) { - ionic_dim_update(qcq); + ionic_dim_update(qcq, IONIC_LIF_F_RX_DIM_INTR); flags |= IONIC_INTR_CRED_UNMASK; cq->bound_intr->rearm_count++; } @@ -531,7 +545,7 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget) ionic_rx_fill_cb(rxcq->bound_q);
if (rx_work_done < budget && napi_complete_done(napi, rx_work_done)) { - ionic_dim_update(qcq); + ionic_dim_update(qcq, 0); flags |= IONIC_INTR_CRED_UNMASK; rxcq->bound_intr->rearm_count++; }
From: Shannon Nelson snelson@pensando.io
stable inclusion from stable-5.10.56 commit 7eefa0b74f3e55dec85edfe5f5270c6f8b598155 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f07f9815b7046e25cc32bf8542c9c0bbc5eb6e0e ]
Be sure to count the csum_none cases when csum offload is enabled.
Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Shannon Nelson snelson@pensando.io Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/pensando/ionic/ionic_txrx.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c index c447a8ab1b17..5463c8b8e43c 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c @@ -197,12 +197,11 @@ static void ionic_rx_clean(struct ionic_queue *q, } }
- if (likely(netdev->features & NETIF_F_RXCSUM)) { - if (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_CALC) { - skb->ip_summed = CHECKSUM_COMPLETE; - skb->csum = (__force __wsum)le16_to_cpu(comp->csum); - stats->csum_complete++; - } + if (likely(netdev->features & NETIF_F_RXCSUM) && + (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_CALC)) { + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum = (__force __wsum)le16_to_cpu(comp->csum); + stats->csum_complete++; } else { stats->csum_none++; }
From: Xin Long lucien.xin@gmail.com
stable inclusion from stable-5.10.56 commit 4951ffa3fac8892949a09b630191ff12f35f4b72 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 3cf4375a090473d240281a0d2b04a3a5aaeac34b ]
One skb's skb_shinfo frags are not writable, and they can be shared with other skbs' like by pskb_copy(). To write the frags may cause other skb's data crash.
So before doing en/decryption, skb_cow_data() should always be called for a cloned or nonlinear skb if req dst is using the same sg as req src. While at it, the likely branch can be removed, as it will be covered by skb_cow_data().
Note that esp_input() has the same issue, and I will fix it in another patch. tipc_aead_encrypt() doesn't have this issue, as it only processes linear data in the unlikely branch.
Fixes: fc1b6d6de220 ("tipc: introduce TIPC encryption & authentication") Reported-by: Shuang Li shuali@redhat.com Signed-off-by: Xin Long lucien.xin@gmail.com Acked-by: Jon Maloy jmaloy@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/tipc/crypto.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c index 2301b66280de..f8e73c4a0093 100644 --- a/net/tipc/crypto.c +++ b/net/tipc/crypto.c @@ -891,16 +891,10 @@ static int tipc_aead_decrypt(struct net *net, struct tipc_aead *aead, if (unlikely(!aead)) return -ENOKEY;
- /* Cow skb data if needed */ - if (likely(!skb_cloned(skb) && - (!skb_is_nonlinear(skb) || !skb_has_frag_list(skb)))) { - nsg = 1 + skb_shinfo(skb)->nr_frags; - } else { - nsg = skb_cow_data(skb, 0, &unused); - if (unlikely(nsg < 0)) { - pr_err("RX: skb_cow_data() returned %d\n", nsg); - return nsg; - } + nsg = skb_cow_data(skb, 0, &unused); + if (unlikely(nsg < 0)) { + pr_err("RX: skb_cow_data() returned %d\n", nsg); + return nsg; }
/* Allocate memory for the AEAD operation */
From: Geetha sowjanya gakula@marvell.com
stable inclusion from stable-5.10.56 commit 51b751fc06b8dd4fd787586eed373a563e3bd991 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 69f0aeb13bb548e2d5710a350116e03f0273302e ]
In the existing code while changing the number of TX/RX queues using ethtool the PF/VF interface resources are freed and reallocated (otx2_stop and otx2_open is called) if the device is in running state. If any resource allocation fails in otx2_open, driver free already allocated resources and return. But again, when the number of queues changes as the device state still running oxt2_stop is called. In which we try to free already freed resources leading to driver crash. This patch fixes the issue by setting the INTF_DOWN flag on error and free the resources in otx2_stop only if the flag is not set.
Fixes: 50fe6c02e5ad ("octeontx2-pf: Register and handle link notifications") Signed-off-by: Geetha sowjanya gakula@marvell.com Signed-off-by: Sunil Kovvuri Goutham Sunil.Goutham@cavium.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 7 +++---- drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 5 +++++ 2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c index 257c2b3d9c9a..dc8d1b01a7dc 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c @@ -230,15 +230,14 @@ static int otx2_set_channels(struct net_device *dev, err = otx2_set_real_num_queues(dev, channel->tx_count, channel->rx_count); if (err) - goto fail; + return err;
pfvf->hw.rx_queues = channel->rx_count; pfvf->hw.tx_queues = channel->tx_count; pfvf->qset.cq_cnt = pfvf->hw.tx_queues + pfvf->hw.rx_queues;
-fail: if (if_up) - dev->netdev_ops->ndo_open(dev); + err = dev->netdev_ops->ndo_open(dev);
netdev_info(dev, "Setting num Tx rings to %d, Rx rings to %d success\n", pfvf->hw.tx_queues, pfvf->hw.rx_queues); @@ -342,7 +341,7 @@ static int otx2_set_ringparam(struct net_device *netdev, qs->rqe_cnt = rx_count;
if (if_up) - netdev->netdev_ops->ndo_open(netdev); + return netdev->netdev_ops->ndo_open(netdev);
return 0; } diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 9fef9be015e5..044a5b1196ac 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -1592,6 +1592,7 @@ int otx2_open(struct net_device *netdev) err_tx_stop_queues: netif_tx_stop_all_queues(netdev); netif_carrier_off(netdev); + pf->flags |= OTX2_FLAG_INTF_DOWN; err_free_cints: otx2_free_cints(pf, qidx); vec = pci_irq_vector(pf->pdev, @@ -1619,6 +1620,10 @@ int otx2_stop(struct net_device *netdev) struct otx2_rss_info *rss; int qidx, vec, wrk;
+ /* If the DOWN flag is set resources are already freed */ + if (pf->flags & OTX2_FLAG_INTF_DOWN) + return 0; + netif_carrier_off(netdev); netif_tx_stop_all_queues(netdev);
From: Jiapeng Chong jiapeng.chong@linux.alibaba.com
stable inclusion from stable-5.10.56 commit f5f78ae5f1bed58742cfe07b10c8233ec163f2ce bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 7e4960b3d66d7248b23de3251118147812b42da2 ]
The error code is missing in this code scenario, add the error code '-EINVAL' to the return value 'err'.
Eliminate the follow smatch warning:
drivers/net/ethernet/mellanox/mlx4/main.c:3538 mlx4_load_one() warn: missing error code 'err'.
Reported-by: Abaci Robot abaci@linux.alibaba.com Fixes: 7ae0e400cd93 ("net/mlx4_core: Flexible (asymmetric) allocation of EQs and MSI-X vectors for PF/VFs") Signed-off-by: Jiapeng Chong jiapeng.chong@linux.alibaba.com Reviewed-by: Tariq Toukan tariqt@nvidia.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/mellanox/mlx4/main.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 00c84656b2e7..28ac4693da3c 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -3535,6 +3535,7 @@ static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
if (!SRIOV_VALID_STATE(dev->flags)) { mlx4_err(dev, "Invalid SRIOV state\n"); + err = -EINVAL; goto err_close; } }
From: Vitaly Kuznetsov vkuznets@redhat.com
stable inclusion from stable-5.10.56 commit 01f3581d4400f6586403409c5c3a3128fbb3e336 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 0a31df6823232516f61f174907e444f710941dfe ]
MSR_KVM_ASYNC_PF_ACK MSR is part of interrupt based asynchronous page fault interface and not the original (deprecated) KVM_FEATURE_ASYNC_PF. This is stated in Documentation/virt/kvm/msr.rst.
Fixes: 66570e966dd9 ("kvm: x86: only provide PV features if enabled in guest's CPUID") Signed-off-by: Vitaly Kuznetsov vkuznets@redhat.com Reviewed-by: Maxim Levitsky mlevitsk@redhat.com Reviewed-by: Oliver Upton oupton@google.com Message-Id: 20210722123018.260035-1-vkuznets@redhat.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/x86/kvm/x86.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index bdf167f9caa8..05a5462eba14 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3272,7 +3272,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) return 1; break; case MSR_KVM_ASYNC_PF_ACK: - if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF)) + if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF_INT)) return 1; if (data & 0x1) { vcpu->arch.apf.pageready_pending = false; @@ -3601,7 +3601,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) msr_info->data = vcpu->arch.apf.msr_int_val; break; case MSR_KVM_ASYNC_PF_ACK: - if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF)) + if (!guest_pv_has(vcpu, KVM_FEATURE_ASYNC_PF_INT)) return 1;
msr_info->data = 0;
From: Pavel Skripkin paskripkin@gmail.com
stable inclusion from stable-5.10.56 commit e6097071a4ff4b9543adb1c041a3708d5606c35c bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit c7c9d2102c9c098916ab9e0ab248006107d00d6c ]
Syzbot reported skb_over_panic() in llc_pdu_init_as_xid_cmd(). The problem was in wrong LCC header manipulations.
Syzbot's reproducer tries to send XID packet. llc_ui_sendmsg() is doing following steps:
1. skb allocation with size = len + header size len is passed from userpace and header size is 3 since addr->sllc_xid is set.
2. skb_reserve() for header_len = 3 3. filling all other space with memcpy_from_msg()
Ok, at this moment we have fully loaded skb, only headers needs to be filled.
Then code comes to llc_sap_action_send_xid_c(). This function pushes 3 bytes for LLC PDU header and initializes it. Then comes llc_pdu_init_as_xid_cmd(). It initalizes next 3 bytes *AFTER* LLC PDU header and call skb_push(skb, 3). This looks wrong for 2 reasons:
1. Bytes rigth after LLC header are user data, so this function was overwriting payload.
2. skb_push(skb, 3) call can cause skb_over_panic() since all free space was filled in llc_ui_sendmsg(). (This can happen is user passed 686 len: 686 + 14 (eth header) + 3 (LLC header) = 703. SKB_DATA_ALIGN(703) = 704)
So, in this patch I added 2 new private constansts: LLC_PDU_TYPE_U_XID and LLC_PDU_LEN_U_XID. LLC_PDU_LEN_U_XID is used to correctly reserve header size to handle LLC + XID case. LLC_PDU_TYPE_U_XID is used by llc_pdu_header_init() function to push 6 bytes instead of 3. And finally I removed skb_push() call from llc_pdu_init_as_xid_cmd().
This changes should not affect other parts of LLC, since after all steps we just transmit buffer.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-and-tested-by: syzbot+5e5a981ad7cc54c4b2b4@syzkaller.appspotmail.com Signed-off-by: Pavel Skripkin paskripkin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/net/llc_pdu.h | 31 +++++++++++++++++++++++-------- net/llc/af_llc.c | 10 +++++++++- net/llc/llc_s_ac.c | 2 +- 3 files changed, 33 insertions(+), 10 deletions(-)
diff --git a/include/net/llc_pdu.h b/include/net/llc_pdu.h index c0f0a13ed818..49aa79c7b278 100644 --- a/include/net/llc_pdu.h +++ b/include/net/llc_pdu.h @@ -15,9 +15,11 @@ #include <linux/if_ether.h>
/* Lengths of frame formats */ -#define LLC_PDU_LEN_I 4 /* header and 2 control bytes */ -#define LLC_PDU_LEN_S 4 -#define LLC_PDU_LEN_U 3 /* header and 1 control byte */ +#define LLC_PDU_LEN_I 4 /* header and 2 control bytes */ +#define LLC_PDU_LEN_S 4 +#define LLC_PDU_LEN_U 3 /* header and 1 control byte */ +/* header and 1 control byte and XID info */ +#define LLC_PDU_LEN_U_XID (LLC_PDU_LEN_U + sizeof(struct llc_xid_info)) /* Known SAP addresses */ #define LLC_GLOBAL_SAP 0xFF #define LLC_NULL_SAP 0x00 /* not network-layer visible */ @@ -50,9 +52,10 @@ #define LLC_PDU_TYPE_U_MASK 0x03 /* 8-bit control field */ #define LLC_PDU_TYPE_MASK 0x03
-#define LLC_PDU_TYPE_I 0 /* first bit */ -#define LLC_PDU_TYPE_S 1 /* first two bits */ -#define LLC_PDU_TYPE_U 3 /* first two bits */ +#define LLC_PDU_TYPE_I 0 /* first bit */ +#define LLC_PDU_TYPE_S 1 /* first two bits */ +#define LLC_PDU_TYPE_U 3 /* first two bits */ +#define LLC_PDU_TYPE_U_XID 4 /* private type for detecting XID commands */
#define LLC_PDU_TYPE_IS_I(pdu) \ ((!(pdu->ctrl_1 & LLC_PDU_TYPE_I_MASK)) ? 1 : 0) @@ -230,9 +233,18 @@ static inline struct llc_pdu_un *llc_pdu_un_hdr(struct sk_buff *skb) static inline void llc_pdu_header_init(struct sk_buff *skb, u8 type, u8 ssap, u8 dsap, u8 cr) { - const int hlen = type == LLC_PDU_TYPE_U ? 3 : 4; + int hlen = 4; /* default value for I and S types */ struct llc_pdu_un *pdu;
+ switch (type) { + case LLC_PDU_TYPE_U: + hlen = 3; + break; + case LLC_PDU_TYPE_U_XID: + hlen = 6; + break; + } + skb_push(skb, hlen); skb_reset_network_header(skb); pdu = llc_pdu_un_hdr(skb); @@ -374,7 +386,10 @@ static inline void llc_pdu_init_as_xid_cmd(struct sk_buff *skb, xid_info->fmt_id = LLC_XID_FMT_ID; /* 0x81 */ xid_info->type = svcs_supported; xid_info->rw = rx_window << 1; /* size of receive window */ - skb_put(skb, sizeof(struct llc_xid_info)); + + /* no need to push/put since llc_pdu_header_init() has already + * pushed 3 + 3 bytes + */ }
/** diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 7180979114e4..ac5cadd02cfa 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -98,8 +98,16 @@ static inline u8 llc_ui_header_len(struct sock *sk, struct sockaddr_llc *addr) { u8 rc = LLC_PDU_LEN_U;
- if (addr->sllc_test || addr->sllc_xid) + if (addr->sllc_test) rc = LLC_PDU_LEN_U; + else if (addr->sllc_xid) + /* We need to expand header to sizeof(struct llc_xid_info) + * since llc_pdu_init_as_xid_cmd() sets 4,5,6 bytes of LLC header + * as XID PDU. In llc_ui_sendmsg() we reserved header size and then + * filled all other space with user data. If we won't reserve this + * bytes, llc_pdu_init_as_xid_cmd() will overwrite user data + */ + rc = LLC_PDU_LEN_U_XID; else if (sk->sk_type == SOCK_STREAM) rc = LLC_PDU_LEN_I; return rc; diff --git a/net/llc/llc_s_ac.c b/net/llc/llc_s_ac.c index 7ae4cc684d3a..9fa3342c7a82 100644 --- a/net/llc/llc_s_ac.c +++ b/net/llc/llc_s_ac.c @@ -79,7 +79,7 @@ int llc_sap_action_send_xid_c(struct llc_sap *sap, struct sk_buff *skb) struct llc_sap_state_ev *ev = llc_sap_ev(skb); int rc;
- llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap, + llc_pdu_header_init(skb, LLC_PDU_TYPE_U_XID, ev->saddr.lsap, ev->daddr.lsap, LLC_PDU_CMD); llc_pdu_init_as_xid_cmd(skb, LLC_XID_NULL_CLASS_2, 0); rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);
From: Robert Foss robert.foss@linaro.org
stable inclusion from stable-5.10.56 commit 4a6841921cc818ebaa10a74b799867d149de2d1e bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit b910a0206b59eb90ea8ff76d146f4c3156da61e9 ]
The downstream dts lists this value as 0x494, and not 0x45c.
Fixes: af776a3e1c30 ("drm/msm/dpu: add SM8250 to hw catalog") Signed-off-by: Robert Foss robert.foss@linaro.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@somainline.org Link: https://lore.kernel.org/r/20210628085033.9905-1-robert.foss@linaro.org Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c index 60b304b72b7c..b39980b9db1d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c @@ -168,7 +168,7 @@ static const struct dpu_mdp_cfg sc7180_mdp[] = { static const struct dpu_mdp_cfg sm8250_mdp[] = { { .name = "top_0", .id = MDP_TOP, - .base = 0x0, .len = 0x45C, + .base = 0x0, .len = 0x494, .features = 0, .highest_bank_bit = 0x3, /* TODO: 2 for LP_DDR4 */ .clk_ctrls[DPU_CLK_CTRL_VIG0] = {
From: Bjorn Andersson bjorn.andersson@linaro.org
stable inclusion from stable-5.10.56 commit 645a1d3bef5f149f853a5815c437b16b290583e0 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f9a39932fa54b6421e751ada7a285da809146421 ]
Some bootloaders set the widebus enable bit in the INTF_CONFIG register, but configuration of widebus isn't yet supported ensure that the register has a known value, with widebus disabled.
Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support") Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Reviewed-by: Stephen Boyd swboyd@chromium.org Link: https://lore.kernel.org/r/20210722024434.3313167-1-bjorn.andersson@linaro.or... Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/gpu/drm/msm/dp/dp_catalog.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c index 4963bfe6a472..aeca8b2ac5c6 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.c +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c @@ -740,6 +740,7 @@ int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog) dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY, dp_catalog->width_blanking); dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active); + dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, 0); return 0; }
From: Cong Wang cong.wang@bytedance.com
stable inclusion from stable-5.10.56 commit 1b148bd72e507543c4cac5689a204053bf877337 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 8063e184e49011f6f3f34f6c358dc8a83890bb5b ]
sk_psock_destroy() is a RCU callback, I can't see any reason why it could be used outside.
Signed-off-by: Cong Wang cong.wang@bytedance.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Cc: John Fastabend john.fastabend@gmail.com Cc: Jakub Sitnicki jakub@cloudflare.com Cc: Lorenz Bauer lmb@cloudflare.com Link: https://lore.kernel.org/bpf/20210127221501.46866-1-xiyou.wangcong@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/linux/skmsg.h | 1 - net/core/skmsg.c | 3 +-- 2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h index 82126d529798..822c048934e3 100644 --- a/include/linux/skmsg.h +++ b/include/linux/skmsg.h @@ -395,7 +395,6 @@ static inline struct sk_psock *sk_psock_get(struct sock *sk) }
void sk_psock_stop(struct sock *sk, struct sk_psock *psock); -void sk_psock_destroy(struct rcu_head *rcu); void sk_psock_drop(struct sock *sk, struct sk_psock *psock);
static inline void sk_psock_put(struct sock *sk, struct sk_psock *psock) diff --git a/net/core/skmsg.c b/net/core/skmsg.c index c4c224a5b9de..5dd5569f89bf 100644 --- a/net/core/skmsg.c +++ b/net/core/skmsg.c @@ -676,14 +676,13 @@ static void sk_psock_destroy_deferred(struct work_struct *gc) kfree(psock); }
-void sk_psock_destroy(struct rcu_head *rcu) +static void sk_psock_destroy(struct rcu_head *rcu) { struct sk_psock *psock = container_of(rcu, struct sk_psock, rcu);
INIT_WORK(&psock->gc, sk_psock_destroy_deferred); schedule_work(&psock->gc); } -EXPORT_SYMBOL_GPL(sk_psock_destroy);
void sk_psock_drop(struct sock *sk, struct sk_psock *psock) {
From: Maor Gottlieb maorg@nvidia.com
stable inclusion from stable-5.10.56 commit bd744f2a275573f29811ebf4f0716b120c0036fd bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 8b54874ef1617185048029a3083d510569e93751 ]
Fix a bug when flow table is created in priority that already has other flow tables as shown in the below diagram. If the new flow table (FT-B) has the lowest level in the priority, we need to connect the flow tables from the previous priority (p0) to this new table. In addition when this flow table is destroyed (FT-B), we need to connect the flow tables from the previous priority (p0) to the next level flow table (FT-C) in the same priority of the destroyed table (if exists).
--------- |root_ns| --------- | -------------------------------- | | | ---------- ---------- --------- |p(prio)-x| | p-y | | p-n | ---------- ---------- --------- | | ---------------- ------------------ |ns(e.g bypass)| |ns(e.g. kernel) | ---------------- ------------------ | | | ------- ------ ---- | p0 | | p1 | |p2| ------- ------ ---- | | \ -------- ------- ------ | FT-A | |FT-B | |FT-C| -------- ------- ------
Fixes: f90edfd279f3 ("net/mlx5_core: Connect flow tables") Signed-off-by: Maor Gottlieb maorg@nvidia.com Reviewed-by: Mark Bloch mbloch@nvidia.com Signed-off-by: Saeed Mahameed saeedm@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index 79fc5755735f..1d4b4e6f6fb4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -1024,17 +1024,19 @@ static int connect_fwd_rules(struct mlx5_core_dev *dev, static int connect_flow_table(struct mlx5_core_dev *dev, struct mlx5_flow_table *ft, struct fs_prio *prio) { - struct mlx5_flow_table *next_ft; + struct mlx5_flow_table *next_ft, *first_ft; int err = 0;
/* Connect_prev_fts and update_root_ft_create are mutually exclusive */
- if (list_empty(&prio->node.children)) { + first_ft = list_first_entry_or_null(&prio->node.children, + struct mlx5_flow_table, node.list); + if (!first_ft || first_ft->level > ft->level) { err = connect_prev_fts(dev, ft, prio); if (err) return err;
- next_ft = find_next_chained_ft(prio); + next_ft = first_ft ? first_ft : find_next_chained_ft(prio); err = connect_fwd_rules(dev, ft, next_ft); if (err) return err; @@ -2113,7 +2115,7 @@ static int disconnect_flow_table(struct mlx5_flow_table *ft) node.list) == ft)) return 0;
- next_ft = find_next_chained_ft(prio); + next_ft = find_next_ft(ft); err = connect_fwd_rules(dev, next_ft, ft); if (err) return err;
From: Dima Chumak dchumak@nvidia.com
stable inclusion from stable-5.10.56 commit 362e9d23cf70896c65a436667449cb2d277b930f bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit b1c2f6312c5005c928a72e668bf305a589d828d4 ]
The result of __dev_get_by_index() is not checked for NULL and then gets dereferenced immediately.
Also, __dev_get_by_index() must be called while holding either RTNL lock or @dev_base_lock, which isn't satisfied by mlx5e_hairpin_get_mdev() or its callers. This makes the underlying hlist_for_each_entry() loop not safe, and can have adverse effects in itself.
Fix by using dev_get_by_index() and handling nullptr return value when ifindex device is not found. Update mlx5e_hairpin_get_mdev() callers to check for possible PTR_ERR() result.
Fixes: 77ab67b7f0f9 ("net/mlx5e: Basic setup of hairpin object") Addresses-Coverity: ("Dereference null return value") Signed-off-by: Dima Chumak dchumak@nvidia.com Reviewed-by: Vlad Buslov vladbu@nvidia.com Reviewed-by: Roi Dayan roid@nvidia.com Signed-off-by: Saeed Mahameed saeedm@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 33 +++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 59837af959d0..1ad1692a5b2d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -481,12 +481,32 @@ static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv, static struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex) { + struct mlx5_core_dev *mdev; struct net_device *netdev; struct mlx5e_priv *priv;
- netdev = __dev_get_by_index(net, ifindex); + netdev = dev_get_by_index(net, ifindex); + if (!netdev) + return ERR_PTR(-ENODEV); + priv = netdev_priv(netdev); - return priv->mdev; + mdev = priv->mdev; + dev_put(netdev); + + /* Mirred tc action holds a refcount on the ifindex net_device (see + * net/sched/act_mirred.c:tcf_mirred_get_dev). So, it's okay to continue using mdev + * after dev_put(netdev), while we're in the context of adding a tc flow. + * + * The mdev pointer corresponds to the peer/out net_device of a hairpin. It is then + * stored in a hairpin object, which exists until all flows, that refer to it, get + * removed. + * + * On the other hand, after a hairpin object has been created, the peer net_device may + * be removed/unbound while there are still some hairpin flows that are using it. This + * case is handled by mlx5e_tc_hairpin_update_dead_peer, which is hooked to + * NETDEV_UNREGISTER event of the peer net_device. + */ + return mdev; }
static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp) @@ -685,6 +705,10 @@ mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params
func_mdev = priv->mdev; peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex); + if (IS_ERR(peer_mdev)) { + err = PTR_ERR(peer_mdev); + goto create_pair_err; + }
pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params); if (IS_ERR(pair)) { @@ -823,6 +847,11 @@ static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv, int err;
peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex); + if (IS_ERR(peer_mdev)) { + NL_SET_ERR_MSG_MOD(extack, "invalid ifindex of mirred device"); + return PTR_ERR(peer_mdev); + } + if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) { NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported"); return -EOPNOTSUPP;
From: Marcelo Ricardo Leitner marcelo.leitner@gmail.com
stable inclusion from stable-5.10.56 commit 58b8c812c7641d9d9bfd1663f42dac2dbba3a560 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 557fb5862c9272ad9b21407afe1da8acfd9b53eb ]
As Ben Hutchings noticed, this check should have been inverted: the call returns true in case of success.
Reported-by: Ben Hutchings ben@decadent.org.uk Fixes: 0c5dc070ff3d ("sctp: validate from_addr_param return") Signed-off-by: Marcelo Ricardo Leitner marcelo.leitner@gmail.com Reviewed-by: Xin Long lucien.xin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/sctp/input.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sctp/input.c b/net/sctp/input.c index f72bff93745c..ddb5b5c2550e 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -1175,7 +1175,7 @@ static struct sctp_association *__sctp_rcv_asconf_lookup( if (unlikely(!af)) return NULL;
- if (af->from_addr_param(&paddr, param, peer_port, 0)) + if (!af->from_addr_param(&paddr, param, peer_port, 0)) return NULL;
return __sctp_lookup_association(net, laddr, &paddr, transportp);
From: Wang Hai wanghai38@huawei.com
stable inclusion from stable-5.10.56 commit 93e5bf4b2925cfec5299791913a118adb3f62846 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 76a16be07b209a3f507c72abe823bd3af1c8661a ]
Replace pci_enable_device() with pcim_enable_device(), pci_disable_device() and pci_release_regions() will be called in release automatically.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Wang Hai wanghai38@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/dec/tulip/winbond-840.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c index 89cbdc1f4857..6161e1c604c0 100644 --- a/drivers/net/ethernet/dec/tulip/winbond-840.c +++ b/drivers/net/ethernet/dec/tulip/winbond-840.c @@ -357,7 +357,7 @@ static int w840_probe1(struct pci_dev *pdev, const struct pci_device_id *ent) int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; void __iomem *ioaddr;
- i = pci_enable_device(pdev); + i = pcim_enable_device(pdev); if (i) return i;
pci_set_master(pdev); @@ -379,7 +379,7 @@ static int w840_probe1(struct pci_dev *pdev, const struct pci_device_id *ent)
ioaddr = pci_iomap(pdev, TULIP_BAR, netdev_res_size); if (!ioaddr) - goto err_out_free_res; + goto err_out_netdev;
for (i = 0; i < 3; i++) ((__le16 *)dev->dev_addr)[i] = cpu_to_le16(eeprom_read(ioaddr, i)); @@ -458,8 +458,6 @@ static int w840_probe1(struct pci_dev *pdev, const struct pci_device_id *ent)
err_out_cleardev: pci_iounmap(pdev, ioaddr); -err_out_free_res: - pci_release_regions(pdev); err_out_netdev: free_netdev (dev); return -ENODEV; @@ -1526,7 +1524,6 @@ static void w840_remove1(struct pci_dev *pdev) if (dev) { struct netdev_private *np = netdev_priv(dev); unregister_netdev(dev); - pci_release_regions(pdev); pci_iounmap(pdev, np->base_addr); free_netdev(dev); }
From: Wang Hai wanghai38@huawei.com
stable inclusion from stable-5.10.56 commit 65dfa6cb22337d21cc8a441e4e324c86eb886c72 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 89fb62fde3b226f99b7015280cf132e2a7438edf ]
Replace pci_enable_device() with pcim_enable_device(), pci_disable_device() and pci_release_regions() will be called in release automatically.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Wang Hai wanghai38@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/sis/sis900.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/sis/sis900.c b/drivers/net/ethernet/sis/sis900.c index 620c26f71be8..e267b7ce3a45 100644 --- a/drivers/net/ethernet/sis/sis900.c +++ b/drivers/net/ethernet/sis/sis900.c @@ -443,7 +443,7 @@ static int sis900_probe(struct pci_dev *pci_dev, #endif
/* setup various bits in PCI command register */ - ret = pci_enable_device(pci_dev); + ret = pcim_enable_device(pci_dev); if(ret) return ret;
i = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32)); @@ -469,7 +469,7 @@ static int sis900_probe(struct pci_dev *pci_dev, ioaddr = pci_iomap(pci_dev, 0, 0); if (!ioaddr) { ret = -ENOMEM; - goto err_out_cleardev; + goto err_out; }
sis_priv = netdev_priv(net_dev); @@ -581,8 +581,6 @@ static int sis900_probe(struct pci_dev *pci_dev, sis_priv->tx_ring_dma); err_out_unmap: pci_iounmap(pci_dev, ioaddr); -err_out_cleardev: - pci_release_regions(pci_dev); err_out: free_netdev(net_dev); return ret; @@ -2499,7 +2497,6 @@ static void sis900_remove(struct pci_dev *pci_dev) sis_priv->tx_ring_dma); pci_iounmap(pci_dev, sis_priv->ioaddr); free_netdev(net_dev); - pci_release_regions(pci_dev); }
static int __maybe_unused sis900_suspend(struct device *dev)
From: Dan Carpenter dan.carpenter@oracle.com
stable inclusion from stable-5.10.56 commit cd61e665a16615a00257d2974ba3db14bea33446 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f6b3c7848e66e9046c8a79a5b88fd03461cc252b ]
The hi3110_cmd() is supposed to return zero on success and negative error codes on failure, but it was accidentally declared as a u8 when it needs to be an int type.
Fixes: 57e83fb9b746 ("can: hi311x: Add Holt HI-311x CAN driver") Link: https://lore.kernel.org/r/20210729141246.GA1267@kili Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/can/spi/hi311x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c index 73d48c3b8ded..7d2315c8cacb 100644 --- a/drivers/net/can/spi/hi311x.c +++ b/drivers/net/can/spi/hi311x.c @@ -218,7 +218,7 @@ static int hi3110_spi_trans(struct spi_device *spi, int len) return ret; }
-static u8 hi3110_cmd(struct spi_device *spi, u8 command) +static int hi3110_cmd(struct spi_device *spi, u8 command) { struct hi3110_priv *priv = spi_get_drvdata(spi);
From: Daniel Borkmann daniel@iogearbox.net
stable inclusion from stable-5.10.56 commit bea9e2fd180892eba2574711b05b794f1d0e7b73 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit f5e81d1117501546b7be050c5fbafa6efd2c722c ]
In case of JITs, each of the JIT backends compiles the BPF nospec instruction /either/ to a machine instruction which emits a speculation barrier /or/ to /no/ machine instruction in case the underlying architecture is not affected by Speculative Store Bypass or has different mitigations in place already.
This covers both x86 and (implicitly) arm64: In case of x86, we use 'lfence' instruction for mitigation. In case of arm64, we rely on the firmware mitigation as controlled via the ssbd kernel parameter. Whenever the mitigation is enabled, it works for all of the kernel code with no need to provide any additional instructions here (hence only comment in arm64 JIT). Other archs can follow as needed. The BPF nospec instruction is specifically targeting Spectre v4 since i) we don't use a serialization barrier for the Spectre v1 case, and ii) mitigation instructions for v1 and v4 might be different on some archs.
The BPF nospec is required for a future commit, where the BPF verifier does annotate intermediate BPF programs with speculation barriers.
Co-developed-by: Piotr Krysiuk piotras@gmail.com Co-developed-by: Benedict Schlueter benedict.schlueter@rub.de Signed-off-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Piotr Krysiuk piotras@gmail.com Signed-off-by: Benedict Schlueter benedict.schlueter@rub.de Acked-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/arm/net/bpf_jit_32.c | 3 +++ arch/arm64/net/bpf_jit_comp.c | 13 +++++++++++++ arch/mips/net/ebpf_jit.c | 3 +++ arch/powerpc/net/bpf_jit_comp64.c | 6 ++++++ arch/riscv/net/bpf_jit_comp32.c | 4 ++++ arch/riscv/net/bpf_jit_comp64.c | 4 ++++ arch/s390/net/bpf_jit_comp.c | 5 +++++ arch/sparc/net/bpf_jit_comp_64.c | 3 +++ arch/x86/net/bpf_jit_comp.c | 7 +++++++ arch/x86/net/bpf_jit_comp32.c | 6 ++++++ include/linux/filter.h | 15 +++++++++++++++ kernel/bpf/core.c | 19 ++++++++++++++++++- kernel/bpf/disasm.c | 16 +++++++++------- 13 files changed, 96 insertions(+), 8 deletions(-)
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 0207b6ea6e8a..ce8b04326352 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -1602,6 +1602,9 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) rn = arm_bpf_get_reg32(src_lo, tmp2[1], ctx); emit_ldx_r(dst, rn, off, ctx, BPF_SIZE(code)); break; + /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + break; /* ST: *(size *)(dst + off) = imm */ case BPF_ST | BPF_MEM | BPF_W: case BPF_ST | BPF_MEM | BPF_H: diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index ef9f1d5e989d..345066b8e9fc 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -829,6 +829,19 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, return ret; break;
+ /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + /* + * Nothing required here. + * + * In case of arm64, we rely on the firmware mitigation of + * Speculative Store Bypass as controlled via the ssbd kernel + * parameter. Whenever the mitigation is enabled, it works + * for all of the kernel code with no need to provide any + * additional instructions. + */ + break; + /* ST: *(size *)(dst + off) = imm */ case BPF_ST | BPF_MEM | BPF_W: case BPF_ST | BPF_MEM | BPF_H: diff --git a/arch/mips/net/ebpf_jit.c b/arch/mips/net/ebpf_jit.c index 561154cbcc40..b31b91e57c34 100644 --- a/arch/mips/net/ebpf_jit.c +++ b/arch/mips/net/ebpf_jit.c @@ -1355,6 +1355,9 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, } break;
+ case BPF_ST | BPF_NOSPEC: /* speculation barrier */ + break; + case BPF_ST | BPF_B | BPF_MEM: case BPF_ST | BPF_H | BPF_MEM: case BPF_ST | BPF_W | BPF_MEM: diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index 022103c6a201..658ca2bab13c 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -646,6 +646,12 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, } break;
+ /* + * BPF_ST NOSPEC (speculation barrier) + */ + case BPF_ST | BPF_NOSPEC: + break; + /* * BPF_ST(X) */ diff --git a/arch/riscv/net/bpf_jit_comp32.c b/arch/riscv/net/bpf_jit_comp32.c index 579575f9cdae..f300f93ba645 100644 --- a/arch/riscv/net/bpf_jit_comp32.c +++ b/arch/riscv/net/bpf_jit_comp32.c @@ -1251,6 +1251,10 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, return -1; break;
+ /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + break; + case BPF_ST | BPF_MEM | BPF_B: case BPF_ST | BPF_MEM | BPF_H: case BPF_ST | BPF_MEM | BPF_W: diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 8a56b5293117..c113ae818b14 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -939,6 +939,10 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, emit_ld(rd, 0, RV_REG_T1, ctx); break;
+ /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + break; + /* ST: *(size *)(dst + off) = imm */ case BPF_ST | BPF_MEM | BPF_B: emit_imm(RV_REG_T1, imm, ctx); diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index fc44dce59536..dee01d3b23a4 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -1153,6 +1153,11 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, break; } break; + /* + * BPF_NOSPEC (speculation barrier) + */ + case BPF_ST | BPF_NOSPEC: + break; /* * BPF_ST(X) */ diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c index 3364e2a00989..fef734473c0f 100644 --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -1287,6 +1287,9 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) return 1; break; } + /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + break; /* ST: *(size *)(dst + off) = imm */ case BPF_ST | BPF_MEM | BPF_W: case BPF_ST | BPF_MEM | BPF_H: diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index d5fa77256058..0a962cd6bac1 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -1141,6 +1141,13 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image, } break;
+ /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + if (boot_cpu_has(X86_FEATURE_XMM2)) + /* Emit 'lfence' */ + EMIT3(0x0F, 0xAE, 0xE8); + break; + /* ST: *(u8*)(dst_reg + off) = imm */ case BPF_ST | BPF_MEM | BPF_B: if (is_ereg(dst_reg)) diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c index 2cf4d217840d..4bd0f98df700 100644 --- a/arch/x86/net/bpf_jit_comp32.c +++ b/arch/x86/net/bpf_jit_comp32.c @@ -1705,6 +1705,12 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image, i++; break; } + /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + if (boot_cpu_has(X86_FEATURE_XMM2)) + /* Emit 'lfence' */ + EMIT3(0x0F, 0xAE, 0xE8); + break; /* ST: *(u8*)(dst_reg + off) = imm */ case BPF_ST | BPF_MEM | BPF_H: case BPF_ST | BPF_MEM | BPF_B: diff --git a/include/linux/filter.h b/include/linux/filter.h index 5edf2b660881..bf060c7ace13 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -72,6 +72,11 @@ struct ctl_table_header; /* unused opcode to mark call to interpreter with arguments */ #define BPF_CALL_ARGS 0xe0
+/* unused opcode to mark speculation barrier for mitigating + * Speculative Store Bypass + */ +#define BPF_NOSPEC 0xc0 + /* As per nm, we expose JITed images as text (code) section for * kallsyms. That way, tools like perf can find it to match * addresses. @@ -372,6 +377,16 @@ static inline bool insn_is_zext(const struct bpf_insn *insn) .off = 0, \ .imm = 0 })
+/* Speculation barrier */ + +#define BPF_ST_NOSPEC() \ + ((struct bpf_insn) { \ + .code = BPF_ST | BPF_NOSPEC, \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = 0, \ + .imm = 0 }) + /* Internal classic blocks for direct assignment */
#define __BPF_STMT(CODE, K) \ diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 75c2d184018a..d12efb2550d3 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -32,6 +32,8 @@ #include <linux/perf_event.h> #include <linux/extable.h> #include <linux/log2.h> + +#include <asm/barrier.h> #include <asm/unaligned.h>
/* Registers */ @@ -1380,6 +1382,7 @@ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn, u64 *stack) /* Non-UAPI available opcodes. */ [BPF_JMP | BPF_CALL_ARGS] = &&JMP_CALL_ARGS, [BPF_JMP | BPF_TAIL_CALL] = &&JMP_TAIL_CALL, + [BPF_ST | BPF_NOSPEC] = &&ST_NOSPEC, [BPF_LDX | BPF_PROBE_MEM | BPF_B] = &&LDX_PROBE_MEM_B, [BPF_LDX | BPF_PROBE_MEM | BPF_H] = &&LDX_PROBE_MEM_H, [BPF_LDX | BPF_PROBE_MEM | BPF_W] = &&LDX_PROBE_MEM_W, @@ -1624,7 +1627,21 @@ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn, u64 *stack) COND_JMP(s, JSGE, >=) COND_JMP(s, JSLE, <=) #undef COND_JMP - /* STX and ST and LDX*/ + /* ST, STX and LDX*/ + ST_NOSPEC: + /* Speculation barrier for mitigating Speculative Store Bypass. + * In case of arm64, we rely on the firmware mitigation as + * controlled via the ssbd kernel parameter. Whenever the + * mitigation is enabled, it works for all of the kernel code + * with no need to provide any additional instructions here. + * In case of x86, we use 'lfence' insn for mitigation. We + * reuse preexisting logic from Spectre v1 mitigation that + * happens to produce the required code on x86 for v4 as well. + */ +#ifdef CONFIG_X86 + barrier_nospec(); +#endif + CONT; #define LDST(SIZEOP, SIZE) \ STX_MEM_##SIZEOP: \ *(SIZE *)(unsigned long) (DST + insn->off) = SRC; \ diff --git a/kernel/bpf/disasm.c b/kernel/bpf/disasm.c index b44d8c447afd..ff1dd7d45b58 100644 --- a/kernel/bpf/disasm.c +++ b/kernel/bpf/disasm.c @@ -162,15 +162,17 @@ void print_bpf_insn(const struct bpf_insn_cbs *cbs, else verbose(cbs->private_data, "BUG_%02x\n", insn->code); } else if (class == BPF_ST) { - if (BPF_MODE(insn->code) != BPF_MEM) { + if (BPF_MODE(insn->code) == BPF_MEM) { + verbose(cbs->private_data, "(%02x) *(%s *)(r%d %+d) = %d\n", + insn->code, + bpf_ldst_string[BPF_SIZE(insn->code) >> 3], + insn->dst_reg, + insn->off, insn->imm); + } else if (BPF_MODE(insn->code) == 0xc0 /* BPF_NOSPEC, no UAPI */) { + verbose(cbs->private_data, "(%02x) nospec\n", insn->code); + } else { verbose(cbs->private_data, "BUG_st_%02x\n", insn->code); - return; } - verbose(cbs->private_data, "(%02x) *(%s *)(r%d %+d) = %d\n", - insn->code, - bpf_ldst_string[BPF_SIZE(insn->code) >> 3], - insn->dst_reg, - insn->off, insn->imm); } else if (class == BPF_LDX) { if (BPF_MODE(insn->code) != BPF_MEM) { verbose(cbs->private_data, "BUG_ldx_%02x\n", insn->code);
From: Daniel Borkmann daniel@iogearbox.net
stable inclusion from stable-5.10.56 commit 0e9280654aa482088ee6ef3deadef331f5ac5fb0 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
[ Upstream commit 2039f26f3aca5b0e419b98f65dd36481337b86ee ]
Spectre v4 gadgets make use of memory disambiguation, which is a set of techniques that execute memory access instructions, that is, loads and stores, out of program order; Intel's optimization manual, section 2.4.4.5:
A load instruction micro-op may depend on a preceding store. Many microarchitectures block loads until all preceding store addresses are known. The memory disambiguator predicts which loads will not depend on any previous stores. When the disambiguator predicts that a load does not have such a dependency, the load takes its data from the L1 data cache. Eventually, the prediction is verified. If an actual conflict is detected, the load and all succeeding instructions are re-executed.
af86ca4e3088 ("bpf: Prevent memory disambiguation attack") tried to mitigate this attack by sanitizing the memory locations through preemptive "fast" (low latency) stores of zero prior to the actual "slow" (high latency) store of a pointer value such that upon dependency misprediction the CPU then speculatively executes the load of the pointer value and retrieves the zero value instead of the attacker controlled scalar value previously stored at that location, meaning, subsequent access in the speculative domain is then redirected to the "zero page".
The sanitized preemptive store of zero prior to the actual "slow" store is done through a simple ST instruction based on r10 (frame pointer) with relative offset to the stack location that the verifier has been tracking on the original used register for STX, which does not have to be r10. Thus, there are no memory dependencies for this store, since it's only using r10 and immediate constant of zero; hence af86ca4e3088 /assumed/ a low latency operation.
However, a recent attack demonstrated that this mitigation is not sufficient since the preemptive store of zero could also be turned into a "slow" store and is thus bypassed as well:
[...] // r2 = oob address (e.g. scalar) // r7 = pointer to map value 31: (7b) *(u64 *)(r10 -16) = r2 // r9 will remain "fast" register, r10 will become "slow" register below 32: (bf) r9 = r10 // JIT maps BPF reg to x86 reg: // r9 -> r15 (callee saved) // r10 -> rbp // train store forward prediction to break dependency link between both r9 // and r10 by evicting them from the predictor's LRU table. 33: (61) r0 = *(u32 *)(r7 +24576) 34: (63) *(u32 *)(r7 +29696) = r0 35: (61) r0 = *(u32 *)(r7 +24580) 36: (63) *(u32 *)(r7 +29700) = r0 37: (61) r0 = *(u32 *)(r7 +24584) 38: (63) *(u32 *)(r7 +29704) = r0 39: (61) r0 = *(u32 *)(r7 +24588) 40: (63) *(u32 *)(r7 +29708) = r0 [...] 543: (61) r0 = *(u32 *)(r7 +25596) 544: (63) *(u32 *)(r7 +30716) = r0 // prepare call to bpf_ringbuf_output() helper. the latter will cause rbp // to spill to stack memory while r13/r14/r15 (all callee saved regs) remain // in hardware registers. rbp becomes slow due to push/pop latency. below is // disasm of bpf_ringbuf_output() helper for better visual context: // // ffffffff8117ee20: 41 54 push r12 // ffffffff8117ee22: 55 push rbp // ffffffff8117ee23: 53 push rbx // ffffffff8117ee24: 48 f7 c1 fc ff ff ff test rcx,0xfffffffffffffffc // ffffffff8117ee2b: 0f 85 af 00 00 00 jne ffffffff8117eee0 <-- jump taken // [...] // ffffffff8117eee0: 49 c7 c4 ea ff ff ff mov r12,0xffffffffffffffea // ffffffff8117eee7: 5b pop rbx // ffffffff8117eee8: 5d pop rbp // ffffffff8117eee9: 4c 89 e0 mov rax,r12 // ffffffff8117eeec: 41 5c pop r12 // ffffffff8117eeee: c3 ret 545: (18) r1 = map[id:4] 547: (bf) r2 = r7 548: (b7) r3 = 0 549: (b7) r4 = 4 550: (85) call bpf_ringbuf_output#194288 // instruction 551 inserted by verifier \ 551: (7a) *(u64 *)(r10 -16) = 0 | /both/ are now slow stores here // storing map value pointer r7 at fp-16 | since value of r10 is "slow". 552: (7b) *(u64 *)(r10 -16) = r7 / // following "fast" read to the same memory location, but due to dependency // misprediction it will speculatively execute before insn 551/552 completes. 553: (79) r2 = *(u64 *)(r9 -16) // in speculative domain contains attacker controlled r2. in non-speculative // domain this contains r7, and thus accesses r7 +0 below. 554: (71) r3 = *(u8 *)(r2 +0) // leak r3
As can be seen, the current speculative store bypass mitigation which the verifier inserts at line 551 is insufficient since /both/, the write of the zero sanitation as well as the map value pointer are a high latency instruction due to prior memory access via push/pop of r10 (rbp) in contrast to the low latency read in line 553 as r9 (r15) which stays in hardware registers. Thus, architecturally, fp-16 is r7, however, microarchitecturally, fp-16 can still be r2.
Initial thoughts to address this issue was to track spilled pointer loads from stack and enforce their load via LDX through r10 as well so that /both/ the preemptive store of zero /as well as/ the load use the /same/ register such that a dependency is created between the store and load. However, this option is not sufficient either since it can be bypassed as well under speculation. An updated attack with pointer spill/fills now _all_ based on r10 would look as follows:
[...] // r2 = oob address (e.g. scalar) // r7 = pointer to map value [...] // longer store forward prediction training sequence than before. 2062: (61) r0 = *(u32 *)(r7 +25588) 2063: (63) *(u32 *)(r7 +30708) = r0 2064: (61) r0 = *(u32 *)(r7 +25592) 2065: (63) *(u32 *)(r7 +30712) = r0 2066: (61) r0 = *(u32 *)(r7 +25596) 2067: (63) *(u32 *)(r7 +30716) = r0 // store the speculative load address (scalar) this time after the store // forward prediction training. 2068: (7b) *(u64 *)(r10 -16) = r2 // preoccupy the CPU store port by running sequence of dummy stores. 2069: (63) *(u32 *)(r7 +29696) = r0 2070: (63) *(u32 *)(r7 +29700) = r0 2071: (63) *(u32 *)(r7 +29704) = r0 2072: (63) *(u32 *)(r7 +29708) = r0 2073: (63) *(u32 *)(r7 +29712) = r0 2074: (63) *(u32 *)(r7 +29716) = r0 2075: (63) *(u32 *)(r7 +29720) = r0 2076: (63) *(u32 *)(r7 +29724) = r0 2077: (63) *(u32 *)(r7 +29728) = r0 2078: (63) *(u32 *)(r7 +29732) = r0 2079: (63) *(u32 *)(r7 +29736) = r0 2080: (63) *(u32 *)(r7 +29740) = r0 2081: (63) *(u32 *)(r7 +29744) = r0 2082: (63) *(u32 *)(r7 +29748) = r0 2083: (63) *(u32 *)(r7 +29752) = r0 2084: (63) *(u32 *)(r7 +29756) = r0 2085: (63) *(u32 *)(r7 +29760) = r0 2086: (63) *(u32 *)(r7 +29764) = r0 2087: (63) *(u32 *)(r7 +29768) = r0 2088: (63) *(u32 *)(r7 +29772) = r0 2089: (63) *(u32 *)(r7 +29776) = r0 2090: (63) *(u32 *)(r7 +29780) = r0 2091: (63) *(u32 *)(r7 +29784) = r0 2092: (63) *(u32 *)(r7 +29788) = r0 2093: (63) *(u32 *)(r7 +29792) = r0 2094: (63) *(u32 *)(r7 +29796) = r0 2095: (63) *(u32 *)(r7 +29800) = r0 2096: (63) *(u32 *)(r7 +29804) = r0 2097: (63) *(u32 *)(r7 +29808) = r0 2098: (63) *(u32 *)(r7 +29812) = r0 // overwrite scalar with dummy pointer; same as before, also including the // sanitation store with 0 from the current mitigation by the verifier. 2099: (7a) *(u64 *)(r10 -16) = 0 | /both/ are now slow stores here 2100: (7b) *(u64 *)(r10 -16) = r7 | since store unit is still busy. // load from stack intended to bypass stores. 2101: (79) r2 = *(u64 *)(r10 -16) 2102: (71) r3 = *(u8 *)(r2 +0) // leak r3 [...]
Looking at the CPU microarchitecture, the scheduler might issue loads (such as seen in line 2101) before stores (line 2099,2100) because the load execution units become available while the store execution unit is still busy with the sequence of dummy stores (line 2069-2098). And so the load may use the prior stored scalar from r2 at address r10 -16 for speculation. The updated attack may work less reliable on CPU microarchitectures where loads and stores share execution resources.
This concludes that the sanitizing with zero stores from af86ca4e3088 ("bpf: Prevent memory disambiguation attack") is insufficient. Moreover, the detection of stack reuse from af86ca4e3088 where previously data (STACK_MISC) has been written to a given stack slot where a pointer value is now to be stored does not have sufficient coverage as precondition for the mitigation either; for several reasons outlined as follows:
1) Stack content from prior program runs could still be preserved and is therefore not "random", best example is to split a speculative store bypass attack between tail calls, program A would prepare and store the oob address at a given stack slot and then tail call into program B which does the "slow" store of a pointer to the stack with subsequent "fast" read. From program B PoV such stack slot type is STACK_INVALID, and therefore also must be subject to mitigation.
2) The STACK_SPILL must not be coupled to register_is_const(&stack->spilled_ptr) condition, for example, the previous content of that memory location could also be a pointer to map or map value. Without the fix, a speculative store bypass is not mitigated in such precondition and can then lead to a type confusion in the speculative domain leaking kernel memory near these pointer types.
While brainstorming on various alternative mitigation possibilities, we also stumbled upon a retrospective from Chrome developers [0]:
[...] For variant 4, we implemented a mitigation to zero the unused memory of the heap prior to allocation, which cost about 1% when done concurrently and 4% for scavenging. Variant 4 defeats everything we could think of. We explored more mitigations for variant 4 but the threat proved to be more pervasive and dangerous than we anticipated. For example, stack slots used by the register allocator in the optimizing compiler could be subject to type confusion, leading to pointer crafting. Mitigating type confusion for stack slots alone would have required a complete redesign of the backend of the optimizing compiler, perhaps man years of work, without a guarantee of completeness. [...]
From BPF side, the problem space is reduced, however, options are rather limited. One idea that has been explored was to xor-obfuscate pointer spills to the BPF stack:
[...] // preoccupy the CPU store port by running sequence of dummy stores. [...] 2106: (63) *(u32 *)(r7 +29796) = r0 2107: (63) *(u32 *)(r7 +29800) = r0 2108: (63) *(u32 *)(r7 +29804) = r0 2109: (63) *(u32 *)(r7 +29808) = r0 2110: (63) *(u32 *)(r7 +29812) = r0 // overwrite scalar with dummy pointer; xored with random 'secret' value // of 943576462 before store ... 2111: (b4) w11 = 943576462 2112: (af) r11 ^= r7 2113: (7b) *(u64 *)(r10 -16) = r11 2114: (79) r11 = *(u64 *)(r10 -16) 2115: (b4) w2 = 943576462 2116: (af) r2 ^= r11 // ... and restored with the same 'secret' value with the help of AX reg. 2117: (71) r3 = *(u8 *)(r2 +0) [...]
While the above would not prevent speculation, it would make data leakage infeasible by directing it to random locations. In order to be effective and prevent type confusion under speculation, such random secret would have to be regenerated for each store. The additional complexity involved for a tracking mechanism that prevents jumps such that restoring spilled pointers would not get corrupted is not worth the gain for unprivileged. Hence, the fix in here eventually opted for emitting a non-public BPF_ST | BPF_NOSPEC instruction which the x86 JIT translates into a lfence opcode. Inserting the latter in between the store and load instruction is one of the mitigations options [1]. The x86 instruction manual notes:
[...] An LFENCE that follows an instruction that stores to memory might complete before the data being stored have become globally visible. [...]
The latter meaning that the preceding store instruction finished execution and the store is at minimum guaranteed to be in the CPU's store queue, but it's not guaranteed to be in that CPU's L1 cache at that point (globally visible). The latter would only be guaranteed via sfence. So the load which is guaranteed to execute after the lfence for that local CPU would have to rely on store-to-load forwarding. [2], in section 2.3 on store buffers says:
[...] For every store operation that is added to the ROB, an entry is allocated in the store buffer. This entry requires both the virtual and physical address of the target. Only if there is no free entry in the store buffer, the frontend stalls until there is an empty slot available in the store buffer again. Otherwise, the CPU can immediately continue adding subsequent instructions to the ROB and execute them out of order. On Intel CPUs, the store buffer has up to 56 entries. [...]
One small upside on the fix is that it lifts constraints from af86ca4e3088 where the sanitize_stack_off relative to r10 must be the same when coming from different paths. The BPF_ST | BPF_NOSPEC gets emitted after a BPF_STX or BPF_ST instruction. This happens either when we store a pointer or data value to the BPF stack for the first time, or upon later pointer spills. The former needs to be enforced since otherwise stale stack data could be leaked under speculation as outlined earlier. For non-x86 JITs the BPF_ST | BPF_NOSPEC mapping is currently optimized away, but others could emit a speculation barrier as well if necessary. For real-world unprivileged programs e.g. generated by LLVM, pointer spill/fill is only generated upon register pressure and LLVM only tries to do that for pointers which are not used often. The program main impact will be the initial BPF_ST | BPF_NOSPEC sanitation for the STACK_INVALID case when the first write to a stack slot occurs e.g. upon map lookup. In future we might refine ways to mitigate the latter cost.
[0] https://arxiv.org/pdf/1902.05178.pdf [1] https://msrc-blog.microsoft.com/2018/05/21/analysis-and-mitigation-of-specul... [2] https://arxiv.org/pdf/1905.05725.pdf
Fixes: af86ca4e3088 ("bpf: Prevent memory disambiguation attack") Fixes: f7cf25b2026d ("bpf: track spill/fill of constants") Co-developed-by: Piotr Krysiuk piotras@gmail.com Co-developed-by: Benedict Schlueter benedict.schlueter@rub.de Signed-off-by: Daniel Borkmann daniel@iogearbox.net Signed-off-by: Piotr Krysiuk piotras@gmail.com Signed-off-by: Benedict Schlueter benedict.schlueter@rub.de Acked-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/linux/bpf_verifier.h | 2 +- kernel/bpf/verifier.c | 87 +++++++++++++----------------------- 2 files changed, 33 insertions(+), 56 deletions(-)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 2739a6431b9e..3d6fb346dc3b 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -319,8 +319,8 @@ struct bpf_insn_aux_data { }; u64 map_key_state; /* constant (32 bit) key tracking for maps */ int ctx_field_size; /* the ctx field size for load insn, maybe 0 */ - int sanitize_stack_off; /* stack slot to be cleared */ u32 seen; /* this insn was processed by the verifier at env->pass_cnt */ + bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */ bool zext_dst; /* this insn zero extends dst reg */ u8 alu_state; /* used in combination with alu_limit */
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 36bc34fce623..e038d672200e 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2297,6 +2297,19 @@ static int check_stack_write_fixed_off(struct bpf_verifier_env *env, cur = env->cur_state->frame[env->cur_state->curframe]; if (value_regno >= 0) reg = &cur->regs[value_regno]; + if (!env->bypass_spec_v4) { + bool sanitize = reg && is_spillable_regtype(reg->type); + + for (i = 0; i < size; i++) { + if (state->stack[spi].slot_type[i] == STACK_INVALID) { + sanitize = true; + break; + } + } + + if (sanitize) + env->insn_aux_data[insn_idx].sanitize_stack_spill = true; + }
if (reg && size == BPF_REG_SIZE && register_is_bounded(reg) && !register_is_null(reg) && env->bpf_capable) { @@ -2319,47 +2332,10 @@ static int check_stack_write_fixed_off(struct bpf_verifier_env *env, verbose(env, "invalid size of register spill\n"); return -EACCES; } - if (state != cur && reg->type == PTR_TO_STACK) { verbose(env, "cannot spill pointers to stack into stack frame of the caller\n"); return -EINVAL; } - - if (!env->bypass_spec_v4) { - bool sanitize = false; - - if (state->stack[spi].slot_type[0] == STACK_SPILL && - register_is_const(&state->stack[spi].spilled_ptr)) - sanitize = true; - for (i = 0; i < BPF_REG_SIZE; i++) - if (state->stack[spi].slot_type[i] == STACK_MISC) { - sanitize = true; - break; - } - if (sanitize) { - int *poff = &env->insn_aux_data[insn_idx].sanitize_stack_off; - int soff = (-spi - 1) * BPF_REG_SIZE; - - /* detected reuse of integer stack slot with a pointer - * which means either llvm is reusing stack slot or - * an attacker is trying to exploit CVE-2018-3639 - * (speculative store bypass) - * Have to sanitize that slot with preemptive - * store of zero. - */ - if (*poff && *poff != soff) { - /* disallow programs where single insn stores - * into two different stack slots, since verifier - * cannot sanitize them - */ - verbose(env, - "insn %d cannot access two stack slots fp%d and fp%d", - insn_idx, *poff, soff); - return -EINVAL; - } - *poff = soff; - } - } save_register_state(state, spi, reg); } else { u8 type = STACK_MISC; @@ -10947,35 +10923,33 @@ static int convert_ctx_accesses(struct bpf_verifier_env *env)
for (i = 0; i < insn_cnt; i++, insn++) { bpf_convert_ctx_access_t convert_ctx_access; + bool ctx_access;
if (insn->code == (BPF_LDX | BPF_MEM | BPF_B) || insn->code == (BPF_LDX | BPF_MEM | BPF_H) || insn->code == (BPF_LDX | BPF_MEM | BPF_W) || - insn->code == (BPF_LDX | BPF_MEM | BPF_DW)) + insn->code == (BPF_LDX | BPF_MEM | BPF_DW)) { type = BPF_READ; - else if (insn->code == (BPF_STX | BPF_MEM | BPF_B) || - insn->code == (BPF_STX | BPF_MEM | BPF_H) || - insn->code == (BPF_STX | BPF_MEM | BPF_W) || - insn->code == (BPF_STX | BPF_MEM | BPF_DW)) + ctx_access = true; + } else if (insn->code == (BPF_STX | BPF_MEM | BPF_B) || + insn->code == (BPF_STX | BPF_MEM | BPF_H) || + insn->code == (BPF_STX | BPF_MEM | BPF_W) || + insn->code == (BPF_STX | BPF_MEM | BPF_DW) || + insn->code == (BPF_ST | BPF_MEM | BPF_B) || + insn->code == (BPF_ST | BPF_MEM | BPF_H) || + insn->code == (BPF_ST | BPF_MEM | BPF_W) || + insn->code == (BPF_ST | BPF_MEM | BPF_DW)) { type = BPF_WRITE; - else + ctx_access = BPF_CLASS(insn->code) == BPF_STX; + } else { continue; + }
if (type == BPF_WRITE && - env->insn_aux_data[i + delta].sanitize_stack_off) { + env->insn_aux_data[i + delta].sanitize_stack_spill) { struct bpf_insn patch[] = { - /* Sanitize suspicious stack slot with zero. - * There are no memory dependencies for this store, - * since it's only using frame pointer and immediate - * constant of zero - */ - BPF_ST_MEM(BPF_DW, BPF_REG_FP, - env->insn_aux_data[i + delta].sanitize_stack_off, - 0), - /* the original STX instruction will immediately - * overwrite the same stack slot with appropriate value - */ *insn, + BPF_ST_NOSPEC(), };
cnt = ARRAY_SIZE(patch); @@ -10989,6 +10963,9 @@ static int convert_ctx_accesses(struct bpf_verifier_env *env) continue; }
+ if (!ctx_access) + continue; + switch (env->insn_aux_data[i + delta].ptr_type) { case PTR_TO_CTX: if (!ops->convert_ctx_access)
From: Daniel Borkmann daniel@iogearbox.net
stable inclusion from stable-5.10.56 commit a11ca29c65c147c9d52896304e9761e2c4ed70dc bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 59089a189e3adde4cf85f2ce479738d1ae4c514d upstream.
Follow-up to fe9a5ca7e370 ("bpf: Do not mark insn as seen under speculative path verification"). The sanitize_insn_aux_data() helper does not serve a particular purpose in today's code. The original intention for the helper was that if function-by-function verification fails, a given program would be cleared from temporary insn_aux_data[], and then its verification would be re-attempted in the context of the main program a second time.
However, a failure in do_check_subprogs() will skip do_check_main() and propagate the error to the user instead, thus such situation can never occur. Given its interaction is not compatible to the Spectre v1 mitigation (due to comparing aux->seen with env->pass_cnt), just remove sanitize_insn_aux_data() to avoid future bugs in this area.
Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- kernel/bpf/verifier.c | 34 ---------------------------------- 1 file changed, 34 deletions(-)
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index e038d672200e..5a5c0d24f86f 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -11707,37 +11707,6 @@ static void free_states(struct bpf_verifier_env *env) } }
-/* The verifier is using insn_aux_data[] to store temporary data during - * verification and to store information for passes that run after the - * verification like dead code sanitization. do_check_common() for subprogram N - * may analyze many other subprograms. sanitize_insn_aux_data() clears all - * temporary data after do_check_common() finds that subprogram N cannot be - * verified independently. pass_cnt counts the number of times - * do_check_common() was run and insn->aux->seen tells the pass number - * insn_aux_data was touched. These variables are compared to clear temporary - * data from failed pass. For testing and experiments do_check_common() can be - * run multiple times even when prior attempt to verify is unsuccessful. - * - * Note that special handling is needed on !env->bypass_spec_v1 if this is - * ever called outside of error path with subsequent program rejection. - */ -static void sanitize_insn_aux_data(struct bpf_verifier_env *env) -{ - struct bpf_insn *insn = env->prog->insnsi; - struct bpf_insn_aux_data *aux; - int i, class; - - for (i = 0; i < env->prog->len; i++) { - class = BPF_CLASS(insn[i].code); - if (class != BPF_LDX && class != BPF_STX) - continue; - aux = &env->insn_aux_data[i]; - if (aux->seen != env->pass_cnt) - continue; - memset(aux, 0, offsetof(typeof(*aux), orig_idx)); - } -} - static int do_check_common(struct bpf_verifier_env *env, int subprog) { bool pop_log = !(env->log.level & BPF_LOG_LEVEL2); @@ -11807,9 +11776,6 @@ static int do_check_common(struct bpf_verifier_env *env, int subprog) if (!ret && pop_log) bpf_vlog_reset(&env->log, 0); free_states(env); - if (ret) - /* clean aux data in case subprog was rejected */ - sanitize_insn_aux_data(env); return ret; }
From: Lorenz Bauer lmb@cloudflare.com
stable inclusion from stable-5.10.56 commit ffb9d5c48b4bba47cf926530de45187ecdfd31b5 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit c9e73e3d2b1eb1ea7ff068e05007eec3bd8ef1c9 upstream.
func_states_equal makes a very short lived allocation for idmap, probably because it's too large to fit on the stack. However the function is called quite often, leading to a lot of alloc / free churn. Replace the temporary allocation with dedicated scratch space in struct bpf_verifier_env.
Signed-off-by: Lorenz Bauer lmb@cloudflare.com Signed-off-by: Alexei Starovoitov ast@kernel.org Acked-by: Edward Cree ecree.xilinx@gmail.com Link: https://lore.kernel.org/bpf/20210429134656.122225-4-lmb@cloudflare.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/linux/bpf_verifier.h | 8 +++++++ kernel/bpf/verifier.c | 46 ++++++++++++------------------------ 2 files changed, 23 insertions(+), 31 deletions(-)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 3d6fb346dc3b..76729d45e99b 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -204,6 +204,13 @@ struct bpf_idx_pair { u32 idx; };
+struct bpf_id_pair { + u32 old; + u32 cur; +}; + +/* Maximum number of register states that can exist at once */ +#define BPF_ID_MAP_SIZE (MAX_BPF_REG + MAX_BPF_STACK / BPF_REG_SIZE) #define MAX_CALL_FRAMES 8 struct bpf_verifier_state { /* call stack tracking */ @@ -401,6 +408,7 @@ struct bpf_verifier_env { const struct bpf_line_info *prev_linfo; struct bpf_verifier_log log; struct bpf_subprog_info subprog_info[BPF_MAX_SUBPROGS + 1]; + struct bpf_id_pair idmap_scratch[BPF_ID_MAP_SIZE]; struct { int *insn_state; int *insn_stack; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 5a5c0d24f86f..cf145b89dd1e 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -8962,13 +8962,6 @@ static bool range_within(struct bpf_reg_state *old, old->s32_max_value >= cur->s32_max_value; }
-/* Maximum number of register states that can exist at once */ -#define ID_MAP_SIZE (MAX_BPF_REG + MAX_BPF_STACK / BPF_REG_SIZE) -struct idpair { - u32 old; - u32 cur; -}; - /* If in the old state two registers had the same id, then they need to have * the same id in the new state as well. But that id could be different from * the old state, so we need to track the mapping from old to new ids. @@ -8979,11 +8972,11 @@ struct idpair { * So we look through our idmap to see if this old id has been seen before. If * so, we require the new id to match; otherwise, we add the id pair to the map. */ -static bool check_ids(u32 old_id, u32 cur_id, struct idpair *idmap) +static bool check_ids(u32 old_id, u32 cur_id, struct bpf_id_pair *idmap) { unsigned int i;
- for (i = 0; i < ID_MAP_SIZE; i++) { + for (i = 0; i < BPF_ID_MAP_SIZE; i++) { if (!idmap[i].old) { /* Reached an empty slot; haven't seen this id before */ idmap[i].old = old_id; @@ -9096,7 +9089,7 @@ static void clean_live_states(struct bpf_verifier_env *env, int insn,
/* Returns true if (rold safe implies rcur safe) */ static bool regsafe(struct bpf_reg_state *rold, struct bpf_reg_state *rcur, - struct idpair *idmap) + struct bpf_id_pair *idmap) { bool equal;
@@ -9213,7 +9206,7 @@ static bool regsafe(struct bpf_reg_state *rold, struct bpf_reg_state *rcur,
static bool stacksafe(struct bpf_func_state *old, struct bpf_func_state *cur, - struct idpair *idmap) + struct bpf_id_pair *idmap) { int i, spi;
@@ -9310,32 +9303,23 @@ static bool refsafe(struct bpf_func_state *old, struct bpf_func_state *cur) * whereas register type in current state is meaningful, it means that * the current state will reach 'bpf_exit' instruction safely */ -static bool func_states_equal(struct bpf_func_state *old, +static bool func_states_equal(struct bpf_verifier_env *env, struct bpf_func_state *old, struct bpf_func_state *cur) { - struct idpair *idmap; - bool ret = false; int i;
- idmap = kcalloc(ID_MAP_SIZE, sizeof(struct idpair), GFP_KERNEL); - /* If we failed to allocate the idmap, just say it's not safe */ - if (!idmap) - return false; - - for (i = 0; i < MAX_BPF_REG; i++) { - if (!regsafe(&old->regs[i], &cur->regs[i], idmap)) - goto out_free; - } + memset(env->idmap_scratch, 0, sizeof(env->idmap_scratch)); + for (i = 0; i < MAX_BPF_REG; i++) + if (!regsafe(&old->regs[i], &cur->regs[i], env->idmap_scratch)) + return false;
- if (!stacksafe(old, cur, idmap)) - goto out_free; + if (!stacksafe(old, cur, env->idmap_scratch)) + return false;
if (!refsafe(old, cur)) - goto out_free; - ret = true; -out_free: - kfree(idmap); - return ret; + return false; + + return true; }
static bool states_equal(struct bpf_verifier_env *env, @@ -9362,7 +9346,7 @@ static bool states_equal(struct bpf_verifier_env *env, for (i = 0; i <= old->curframe; i++) { if (old->frame[i]->callsite != cur->frame[i]->callsite) return false; - if (!func_states_equal(old->frame[i], cur->frame[i])) + if (!func_states_equal(env, old->frame[i], cur->frame[i])) return false; } return true;
From: Daniel Borkmann daniel@iogearbox.net
stable inclusion from stable-5.10.56 commit be561c0154dca82c3e399648bfe1b21b717af144 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit e042aa532c84d18ff13291d00620502ce7a38dda upstream.
In 7fedb63a8307 ("bpf: Tighten speculative pointer arithmetic mask") we narrowed the offset mask for unprivileged pointer arithmetic in order to mitigate a corner case where in the speculative domain it is possible to advance, for example, the map value pointer by up to value_size-1 out-of- bounds in order to leak kernel memory via side-channel to user space.
The verifier's state pruning for scalars leaves one corner case open where in the first verification path R_x holds an unknown scalar with an aux->alu_limit of e.g. 7, and in a second verification path that same register R_x, here denoted as R_x', holds an unknown scalar which has tighter bounds and would thus satisfy range_within(R_x, R_x') as well as tnum_in(R_x, R_x') for state pruning, yielding an aux->alu_limit of 3: Given the second path fits the register constraints for pruning, the final generated mask from aux->alu_limit will remain at 7. While technically not wrong for the non-speculative domain, it would however be possible to craft similar cases where the mask would be too wide as in 7fedb63a8307.
One way to fix it is to detect the presence of unknown scalar map pointer arithmetic and force a deeper search on unknown scalars to ensure that we do not run into a masking mismatch.
Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- include/linux/bpf_verifier.h | 1 + kernel/bpf/verifier.c | 27 +++++++++++++++++---------- 2 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 76729d45e99b..6e330ff2f28d 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -397,6 +397,7 @@ struct bpf_verifier_env { struct bpf_map *used_maps[MAX_USED_MAPS]; /* array of map's used by eBPF program */ u32 used_map_cnt; /* number of used maps */ u32 id_gen; /* used to generate unique reg IDs */ + bool explore_alu_limits; bool allow_ptr_leaks; bool allow_uninit_stack; bool allow_ptr_to_map_access; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index cf145b89dd1e..ce1e9193365f 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5792,6 +5792,12 @@ static int sanitize_ptr_alu(struct bpf_verifier_env *env, alu_state |= off_is_imm ? BPF_ALU_IMMEDIATE : 0; alu_state |= ptr_is_dst_reg ? BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST; + + /* Limit pruning on unknown scalars to enable deep search for + * potential masking differences from other program paths. + */ + if (!off_is_imm) + env->explore_alu_limits = true; }
err = update_alu_sanitation_state(aux, alu_state, alu_limit); @@ -9088,8 +9094,8 @@ static void clean_live_states(struct bpf_verifier_env *env, int insn, }
/* Returns true if (rold safe implies rcur safe) */ -static bool regsafe(struct bpf_reg_state *rold, struct bpf_reg_state *rcur, - struct bpf_id_pair *idmap) +static bool regsafe(struct bpf_verifier_env *env, struct bpf_reg_state *rold, + struct bpf_reg_state *rcur, struct bpf_id_pair *idmap) { bool equal;
@@ -9115,6 +9121,8 @@ static bool regsafe(struct bpf_reg_state *rold, struct bpf_reg_state *rcur, return false; switch (rold->type) { case SCALAR_VALUE: + if (env->explore_alu_limits) + return false; if (rcur->type == SCALAR_VALUE) { if (!rold->precise && !rcur->precise) return true; @@ -9204,9 +9212,8 @@ static bool regsafe(struct bpf_reg_state *rold, struct bpf_reg_state *rcur, return false; }
-static bool stacksafe(struct bpf_func_state *old, - struct bpf_func_state *cur, - struct bpf_id_pair *idmap) +static bool stacksafe(struct bpf_verifier_env *env, struct bpf_func_state *old, + struct bpf_func_state *cur, struct bpf_id_pair *idmap) { int i, spi;
@@ -9251,9 +9258,8 @@ static bool stacksafe(struct bpf_func_state *old, continue; if (old->stack[spi].slot_type[0] != STACK_SPILL) continue; - if (!regsafe(&old->stack[spi].spilled_ptr, - &cur->stack[spi].spilled_ptr, - idmap)) + if (!regsafe(env, &old->stack[spi].spilled_ptr, + &cur->stack[spi].spilled_ptr, idmap)) /* when explored and current stack slot are both storing * spilled registers, check that stored pointers types * are the same as well. @@ -9310,10 +9316,11 @@ static bool func_states_equal(struct bpf_verifier_env *env, struct bpf_func_stat
memset(env->idmap_scratch, 0, sizeof(env->idmap_scratch)); for (i = 0; i < MAX_BPF_REG; i++) - if (!regsafe(&old->regs[i], &cur->regs[i], env->idmap_scratch)) + if (!regsafe(env, &old->regs[i], &cur->regs[i], + env->idmap_scratch)) return false;
- if (!stacksafe(old, cur, env->idmap_scratch)) + if (!stacksafe(env, old, cur, env->idmap_scratch)) return false;
if (!refsafe(old, cur))
From: Steve French stfrench@microsoft.com
stable inclusion from stable-5.10.56 commit bfc8e67c60b911ee5605c1234fcb58239e5c20de bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit f2a26a3cff27dfa456fef386fe5df56dcb4b47b6 upstream.
readpage was calculating the offset of the page incorrectly for the case of large swapcaches.
loff_t offset = (loff_t)page->index << PAGE_SHIFT;
As pointed out by Matthew Wilcox, this needs to use page_file_offset() to calculate the offset instead. Pages coming from the swap cache have page->index set to their index within the swapcache, not within the backing file. For a sufficiently large swapcache, we could have overlapping values of page->index within the same backing file.
Suggested by: Matthew Wilcox (Oracle) willy@infradead.org Cc: stable@vger.kernel.org # v5.7+ Reviewed-by: Ronnie Sahlberg lsahlber@redhat.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/cifs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index da057570bb93..f46904a4ead3 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -4550,7 +4550,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
static int cifs_readpage(struct file *file, struct page *page) { - loff_t offset = (loff_t)page->index << PAGE_SHIFT; + loff_t offset = page_file_offset(page); int rc = -EACCES; unsigned int xid;
From: Srikar Dronamraju srikar@linux.vnet.ibm.com
stable inclusion from stable-5.10.56 commit c14cee5bc466dd09918e2b749bcf2ba9babfb7d5 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 333cf507465fbebb3727f5b53e77538467df312a upstream.
With commit c9f3401313a5 ("powerpc: Always enable queued spinlocks for 64s, disable for others") CONFIG_PPC_QUEUED_SPINLOCKS is always enabled on ppc64le, external modules that use spinlock APIs are failing.
ERROR: modpost: GPL-incompatible module XXX.ko uses GPL-only symbol 'shared_processor'
Before the above commit, modules were able to build without any issues. Also this problem is not seen on other architectures. This problem can be workaround if CONFIG_UNINLINE_SPIN_UNLOCK is enabled in the config. However CONFIG_UNINLINE_SPIN_UNLOCK is not enabled by default and only enabled in certain conditions like CONFIG_DEBUG_SPINLOCKS is set in the kernel config.
#include <linux/module.h> spinlock_t spLock;
static int __init spinlock_test_init(void) { spin_lock_init(&spLock); spin_lock(&spLock); spin_unlock(&spLock); return 0; }
static void __exit spinlock_test_exit(void) { printk("spinlock_test unloaded\n"); } module_init(spinlock_test_init); module_exit(spinlock_test_exit);
MODULE_DESCRIPTION ("spinlock_test"); MODULE_LICENSE ("non-GPL"); MODULE_AUTHOR ("Srikar Dronamraju");
Given that spin locks are one of the basic facilities for module code, this effectively makes it impossible to build/load almost any non GPL modules on ppc64le.
This was first reported at https://github.com/openzfs/zfs/issues/11172
Currently shared_processor is exported as GPL only symbol. Fix this for parity with other architectures by exposing shared_processor to non-GPL modules too.
Fixes: 14c73bd344da ("powerpc/vcpu: Assume dedicated processors as non-preempt") Cc: stable@vger.kernel.org # v5.5+ Reported-by: marc.c.dionne@gmail.com Signed-off-by: Srikar Dronamraju srikar@linux.vnet.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20210729060449.292780-1-srikar@linux.vnet.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/powerpc/platforms/pseries/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 090c13f6c881..5f0d446a2325 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -76,7 +76,7 @@ #include "../../../../drivers/pci/pci.h"
DEFINE_STATIC_KEY_FALSE(shared_processor); -EXPORT_SYMBOL_GPL(shared_processor); +EXPORT_SYMBOL(shared_processor);
int CMO_PrPSP = -1; int CMO_SecPSP = -1;
From: Arnaldo Carvalho de Melo acme@redhat.com
stable inclusion from stable-5.10.56 commit 2ca5ec188b2097f5b93299638e0b74e2126031a8 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 9bac1bd6e6d36459087a728a968e79e37ebcea1a upstream.
This makes 'perf top' abort in some cases, and the right fix will involve surgery that is too much to do at this stage, so revert for now and fix it in the next merge window.
This reverts commit 2d6b74baa7147251c30a46c4996e8cc224aa2dc5.
Cc: Riccardo Mancini rickyman7@gmail.com Cc: Ian Rogers irogers@google.com Cc: Jiri Olsa jolsa@redhat.com Cc: Krister Johansen kjlx@templeofstupid.com Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- tools/perf/util/map.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 6688f6b253a7..f4d44f75ba15 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -192,8 +192,6 @@ struct map *map__new(struct machine *machine, u64 start, u64 len, if (!(prot & PROT_EXEC)) dso__set_loaded(dso); } - - nsinfo__put(dso->nsinfo); dso->nsinfo = nsi; dso__put(dso); }
From: Lukasz Cieplicki lukaszx.cieplicki@intel.com
stable inclusion from stable-5.10.56 commit 75ebe1d355b5b179568009ef35042d3c7be7ee00 bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit dc614c46178b0b89bde86ac54fc687a28580d2b7 upstream.
In case of PHY type error occurs, the message was too generic. Add additional info to PHY type error indicating that it can be wrong cable connected.
Fixes: 124ed15bf126 ("i40e: Add dual speed module support") Signed-off-by: Lukasz Cieplicki lukaszx.cieplicki@intel.com Signed-off-by: Michal Maloszewski michal.maloszewski@intel.com Tested-by: Tony Brelinski tonyx.brelinski@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 57edca02e3a7..ffbfb8a091dd 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -980,7 +980,7 @@ static void i40e_get_settings_link_up(struct i40e_hw *hw, default: /* if we got here and link is up something bad is afoot */ netdev_info(netdev, - "WARNING: Link is up but PHY type 0x%x is not recognized.\n", + "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n", hw_link_info->phy_type); }
From: Oleksij Rempel o.rempel@pengutronix.de
stable inclusion from stable-5.10.56 commit 55dd22c5d029423f513fd849e633adf0e9c10d0c bugzilla: 176004 https://gitee.com/openeuler/kernel/issues/I4DYZ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
commit 0c71437dd50dd687c15d8ca80b3b68f10bb21d63 upstream.
The j1939_session_deactivate() is decrementing the session ref-count and potentially can free() the session. This would cause use-after-free situation.
However, the code calling j1939_session_deactivate() does always hold another reference to the session, so that it would not be free()ed in this code path.
This patch adds a comment to make this clear and a WARN_ON, to ensure that future changes will not violate this requirement. Further this patch avoids dereferencing the session pointer as a precaution to avoid use-after-free if the session is actually free()ed.
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") Link: https://lore.kernel.org/r/20210714111602.24021-1-o.rempel@pengutronix.de Reported-by: Xiaochen Zou xzou017@ucr.edu Signed-off-by: Oleksij Rempel o.rempel@pengutronix.de Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/can/j1939/transport.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c index 411322976950..bdc95bd7a851 100644 --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -1075,11 +1075,16 @@ static bool j1939_session_deactivate_locked(struct j1939_session *session)
static bool j1939_session_deactivate(struct j1939_session *session) { + struct j1939_priv *priv = session->priv; bool active;
- j1939_session_list_lock(session->priv); + j1939_session_list_lock(priv); + /* This function should be called with a session ref-count of at + * least 2. + */ + WARN_ON_ONCE(kref_read(&session->kref) < 2); active = j1939_session_deactivate_locked(session); - j1939_session_list_unlock(session->priv); + j1939_session_list_unlock(priv);
return active; }