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[PATCH openEuler-1.0-LTS] usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.
by Zeng Heng 07 Mar '24

07 Mar '24

From: Vincent Pelletier <plr.vincent(a)gmail.com> mainline inclusion from mainline-v5.16-rc8 commit b1e0887379422975f237d43d8839b751a6bcf154 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I96S0P CVE: CVE-2021-46933 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- ffs_data_clear is indirectly called from both ffs_fs_kill_sb and ffs_ep0_release, so it ends up being called twice when userland closes ep0 and then unmounts f_fs. If userland provided an eventfd along with function's USB descriptors, it ends up calling eventfd_ctx_put as many times, causing a refcount underflow. NULL-ify ffs_eventfd to prevent these extraneous eventfd_ctx_put calls. Also, set epfiles to NULL right after de-allocating it, for readability. For completeness, ffs_data_clear actually ends up being called thrice, the last call being before the whole ffs structure gets freed, so when this specific sequence happens there is a second underflow happening (but not being reported): /sys/kernel/debug/tracing# modprobe usb_f_fs /sys/kernel/debug/tracing# echo ffs_data_clear > set_ftrace_filter /sys/kernel/debug/tracing# echo function > current_tracer /sys/kernel/debug/tracing# echo 1 > tracing_on (setup gadget, run and kill function userland process, teardown gadget) /sys/kernel/debug/tracing# echo 0 > tracing_on /sys/kernel/debug/tracing# cat trace smartcard-openp-436 [000] ..... 1946.208786: ffs_data_clear <-ffs_data_closed smartcard-openp-431 [000] ..... 1946.279147: ffs_data_clear <-ffs_data_closed smartcard-openp-431 [000] .n... 1946.905512: ffs_data_clear <-ffs_data_put Warning output corresponding to above trace: [ 1946.284139] WARNING: CPU: 0 PID: 431 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15c [ 1946.293094] refcount_t: underflow; use-after-free. [ 1946.298164] Modules linked in: usb_f_ncm(E) u_ether(E) usb_f_fs(E) hci_uart(E) btqca(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) nls_ascii(E) nls_cp437(E) vfat(E) fat(E) bcm2835_v4l2(CE) bcm2835_mmal_vchiq(CE) videobuf2_vmalloc(E) videobuf2_memops(E) sha512_generic(E) videobuf2_v4l2(E) sha512_arm(E) videobuf2_common(E) videodev(E) cpufreq_dt(E) snd_bcm2835(CE) brcmfmac(E) mc(E) vc4(E) ctr(E) brcmutil(E) snd_soc_core(E) snd_pcm_dmaengine(E) drbg(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) drm_kms_helper(E) cec(E) ansi_cprng(E) rc_core(E) syscopyarea(E) raspberrypi_cpufreq(E) sysfillrect(E) sysimgblt(E) cfg80211(E) max17040_battery(OE) raspberrypi_hwmon(E) fb_sys_fops(E) regmap_i2c(E) ecdh_generic(E) rfkill(E) ecc(E) bcm2835_rng(E) rng_core(E) vchiq(CE) leds_gpio(E) libcomposite(E) fuse(E) configfs(E) ip_tables(E) x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E) crc32c_generic(E) sdhci_iproc(E) sdhci_pltfm(E) sdhci(E) [ 1946.399633] CPU: 0 PID: 431 Comm: smartcard-openp Tainted: G C OE 5.15.0-1-rpi #1 Debian 5.15.3-1 [ 1946.417950] Hardware name: BCM2835 [ 1946.425442] Backtrace: [ 1946.432048] [<c08d60a0>] (dump_backtrace) from [<c08d62ec>] (show_stack+0x20/0x24) [ 1946.448226] r7:00000009 r6:0000001c r5:c04a948c r4:c0a64e2c [ 1946.458412] [<c08d62cc>] (show_stack) from [<c08d9ae0>] (dump_stack+0x28/0x30) [ 1946.470380] [<c08d9ab8>] (dump_stack) from [<c0123500>] (__warn+0xe8/0x154) [ 1946.482067] r5:c04a948c r4:c0a71dc8 [ 1946.490184] [<c0123418>] (__warn) from [<c08d6948>] (warn_slowpath_fmt+0xa0/0xe4) [ 1946.506758] r7:00000009 r6:0000001c r5:c0a71dc8 r4:c0a71e04 [ 1946.517070] [<c08d68ac>] (warn_slowpath_fmt) from [<c04a948c>] (refcount_warn_saturate+0x110/0x15c) [ 1946.535309] r8:c0100224 r7:c0dfcb84 r6:ffffffff r5:c3b84c00 r4:c24a17c0 [ 1946.546708] [<c04a937c>] (refcount_warn_saturate) from [<c0380134>] (eventfd_ctx_put+0x48/0x74) [ 1946.564476] [<c03800ec>] (eventfd_ctx_put) from [<bf5464e8>] (ffs_data_clear+0xd0/0x118 [usb_f_fs]) [ 1946.582664] r5:c3b84c00 r4:c2695b00 [ 1946.590668] [<bf546418>] (ffs_data_clear [usb_f_fs]) from [<bf547cc0>] (ffs_data_closed+0x9c/0x150 [usb_f_fs]) [ 1946.609608] r5:bf54d014 r4:c2695b00 [ 1946.617522] [<bf547c24>] (ffs_data_closed [usb_f_fs]) from [<bf547da0>] (ffs_fs_kill_sb+0x2c/0x30 [usb_f_fs]) [ 1946.636217] r7:c0dfcb84 r6:c3a12260 r5:bf54d014 r4:c229f000 [ 1946.646273] [<bf547d74>] (ffs_fs_kill_sb [usb_f_fs]) from [<c0326d50>] (deactivate_locked_super+0x54/0x9c) [ 1946.664893] r5:bf54d014 r4:c229f000 [ 1946.672921] [<c0326cfc>] (deactivate_locked_super) from [<c0326df8>] (deactivate_super+0x60/0x64) [ 1946.690722] r5:c2a09000 r4:c229f000 [ 1946.698706] [<c0326d98>] (deactivate_super) from [<c0349a28>] (cleanup_mnt+0xe4/0x14c) [ 1946.715553] r5:c2a09000 r4:00000000 [ 1946.723528] [<c0349944>] (cleanup_mnt) from [<c0349b08>] (__cleanup_mnt+0x1c/0x20) [ 1946.739922] r7:c0dfcb84 r6:c3a12260 r5:c3a126fc r4:00000000 [ 1946.750088] [<c0349aec>] (__cleanup_mnt) from [<c0143d10>] (task_work_run+0x84/0xb8) [ 1946.766602] [<c0143c8c>] (task_work_run) from [<c010bdc8>] (do_work_pending+0x470/0x56c) [ 1946.783540] r7:5ac3c35a r6:c0d0424c r5:c200bfb0 r4:c200a000 [ 1946.793614] [<c010b958>] (do_work_pending) from [<c01000c0>] (slow_work_pending+0xc/0x20) [ 1946.810553] Exception stack(0xc200bfb0 to 0xc200bff8) [ 1946.820129] bfa0: 00000000 00000000 000000aa b5e21430 [ 1946.837104] bfc0: bef867a0 00000001 bef86840 00000034 bef86838 bef86790 bef86794 bef867a0 [ 1946.854125] bfe0: 00000000 bef86798 b67b7a1c b6d626a4 60000010 b5a23760 [ 1946.865335] r10:00000000 r9:c200a000 r8:c0100224 r7:00000034 r6:bef86840 r5:00000001 [ 1946.881914] r4:bef867a0 [ 1946.888793] ---[ end trace 7387f2a9725b28d0 ]--- Fixes: 5e33f6fdf735 ("usb: gadget: ffs: add eventfd notification about ffs events") Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Vincent Pelletier <plr.vincent(a)gmail.com> Link: https://lore.kernel.org/r/f79eeea29f3f98de6782a064ec0f7351ad2f598f.16397939… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/usb/gadget/function/f_fs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 2050993fb58b..221aee81f012 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1698,11 +1698,15 @@ static void ffs_data_clear(struct ffs_data *ffs) BUG_ON(ffs->gadget); - if (ffs->epfiles) + if (ffs->epfiles) { ffs_epfiles_destroy(ffs->epfiles, ffs->eps_count); + ffs->epfiles = NULL; + } - if (ffs->ffs_eventfd) + if (ffs->ffs_eventfd) { eventfd_ctx_put(ffs->ffs_eventfd); + ffs->ffs_eventfd = NULL; + } kfree(ffs->raw_descs_data); kfree(ffs->raw_strings); @@ -1715,7 +1719,6 @@ static void ffs_data_reset(struct ffs_data *ffs) ffs_data_clear(ffs); - ffs->epfiles = NULL; ffs->raw_descs_data = NULL; ffs->raw_descs = NULL; ffs->raw_strings = NULL; -- 2.25.1

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[PATCH OLK-6.6 0/8] cpuset featrue
by Chen Ridong 07 Mar '24

07 Mar '24

Harshit Mogalapalli (1): cgroup/cpuset: Cleanup signedness issue in cpu_exclusive_check() Kamalesh Babulal (1): cgroup/cpuset: Fix retval in update_cpumask() Waiman Long (6): cgroup/cpuset: Add cpuset.cpus.exclusive.effective for v2 cgroup/cpuset: Add cpuset.cpus.exclusive for v2 cgroup/cpuset: Introduce remote partition cgroup/cpuset: Check partition conflict with housekeeping setup cgroup/cpuset: Enable invalid to valid local partition transition cgroup/cpuset: Fix a memory leak in update_exclusive_cpumask() kernel/cgroup/cpuset.c | 1306 ++++++++++++++++++++++++++++++---------- 1 file changed, 975 insertions(+), 331 deletions(-) -- 2.34.1

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[PATCH OLK-5.10 V3 0/2] Remove WQ_FLAG_BOOKMARK flag
by Zizhi Wo 07 Mar '24

07 Mar '24

Fix softlockup by removing the wait_queue flag: WQ_FLAG_BOOKMARK. Changes in V3: - corrected the wrong bugzilla number in commit message. Changes in V2: - fixed incorrect mainline patch adaptation of WQ_FLAG_{CUSTOM, DONE}. Matthew Wilcox (Oracle) (2): filemap: remove use of wait bookmarks sched: remove wait bookmarks include/linux/wait.h | 7 ++---- kernel/sched/wait.c | 57 +++++++------------------------------------- mm/filemap.c | 21 +--------------- 3 files changed, 11 insertions(+), 74 deletions(-) -- 2.39.2

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[PATCH OLK-5.10] net/sched: act_ct: fix wild memory access when clearing fragments
by Zhengchao Shao 07 Mar '24

07 Mar '24

From: Davide Caratti <dcaratti(a)redhat.com> mainline inclusion from mainline-v5.13-rc1 commit f77bd544a6bbe69aa50d9ed09f13494cf36ff806 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I94JMO CVE: CVE-2021-47014 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- while testing re-assembly/re-fragmentation using act_ct, it's possible to observe a crash like the following one: KASAN: maybe wild-memory-access in range [0x0001000000000448-0x000100000000044f] CPU: 50 PID: 0 Comm: swapper/50 Tainted: G S 5.12.0-rc7+ #424 Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.4.3 01/17/2017 RIP: 0010:inet_frag_rbtree_purge+0x50/0xc0 Code: 00 fc ff df 48 89 c3 31 ed 48 89 df e8 a9 7a 38 ff 4c 89 fe 48 89 df 49 89 c6 e8 5b 3a 38 ff 48 8d 7b 40 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 75 59 48 8d bb d0 00 00 00 4c 8b 6b 40 48 89 f8 48 RSP: 0018:ffff888c31449db8 EFLAGS: 00010203 RAX: 0000200000000089 RBX: 000100000000040e RCX: ffffffff989eb960 RDX: 0000000000000140 RSI: ffffffff97cfb977 RDI: 000100000000044e RBP: 0000000000000900 R08: 0000000000000000 R09: ffffed1186289350 R10: 0000000000000003 R11: ffffed1186289350 R12: dffffc0000000000 R13: 000100000000040e R14: 0000000000000000 R15: ffff888155e02160 FS: 0000000000000000(0000) GS:ffff888c31440000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005600cb70a5b8 CR3: 0000000a2c014005 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> inet_frag_destroy+0xa9/0x150 call_timer_fn+0x2d/0x180 run_timer_softirq+0x4fe/0xe70 __do_softirq+0x197/0x5a0 irq_exit_rcu+0x1de/0x200 sysvec_apic_timer_interrupt+0x6b/0x80 </IRQ> when act_ct temporarily stores an IP fragment, restoring the skb qdisc cb results in putting random data in FRAG_CB(), and this causes those "wild" memory accesses later, when the rbtree is purged. Never overwrite the skb cb in case tcf_ct_handle_fragments() returns -EINPROGRESS. Fixes: ae372cb1750f ("net/sched: act_ct: fix restore the qdisc_skb_cb after defrag") Fixes: 7baf2429a1a9 ("net/sched: cls_flower add CT_FLAGS_INVALID flag support") Reported-by: Shuang Li <shuali(a)redhat.com> Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Conflicts: net/sched/act_ct.c Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> --- net/sched/act_ct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index 2d41d866de3e..35668ce0b4a8 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -735,7 +735,8 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, #endif } - *qdisc_skb_cb(skb) = cb; + if (err != -EINPROGRESS) + *qdisc_skb_cb(skb) = cb; skb_clear_hash(skb); skb->ignore_df = 1; return err; -- 2.34.1

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[PATCH OLK-6.6 0/2] Backport etmem swapcache recalim feature to OLK 6.6
by Yuchen Tang 07 Mar '24

07 Mar '24

From: tangyuchen <tangyuchen5(a)huawei.com> v1 -> v2 - remove redundant symbol export - use safer kthread_freezable_should_stop - make THP out recalim candidate Yuchen Tang (2): etmem: Expose symbol reclaim_folio_list etmem: add swapcache reclaim to etmem fs/proc/etmem_swap.c | 173 +++++++++++++++++++++++++++++++++++++++++ include/linux/etmem.h | 29 +++++++ include/linux/swap.h | 2 + mm/etmem.c | 174 ++++++++++++++++++++++++++++++++++++++++++ mm/vmscan.c | 2 +- 5 files changed, 379 insertions(+), 1 deletion(-) -- 2.33.0

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[PATCH openEuler-1.0-LTS V2 0/2] Fix CVE-2021-47047
by Guan Jing 07 Mar '24

07 Mar '24

fix CVE-2021-47047 Guan Jing (2): spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails spi: spi-zynqmp-gqspi: Handle error for dma_set_mask drivers/spi/spi-zynqmp-gqspi.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.34.1

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[PATCH openEuler-1.0-LTS V1 0/2] fix dma_map_single fails
by Guan Jing 07 Mar '24

07 Mar '24

fix dma_map_single fails Guan Jing (2): spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails spi: spi-zynqmp-gqspi: Handle error for dma_set_mask drivers/spi/spi-zynqmp-gqspi.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.34.1

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[PATCH OLK-5.10 0/2] Fixed CVE-2021-47037
by Zheng Zengkai 07 Mar '24

07 Mar '24

Q6afe-clocks driver can get reprobed. For example if the APR services are restarted after the firmware crash. However currently Q6afe-clocks driver will oops because hw.init will get cleared during first _probe call. Rewrite the driver to fill the clock data at runtime rather than using big static array of clocks. This issue was identified as CVE-2021-47037. Backport patches from linux 5.13-rc1 to fix this CVE. Dmitry Baryshkov (1): ASoC: q6afe-clocks: fix reprobing of the driver Srinivas Kandagatla (1): ASoC: q6afe-clocks: fix warning on symbol scope sound/soc/qcom/qdsp6/q6afe-clocks.c | 209 ++++++++++++++-------------- sound/soc/qcom/qdsp6/q6afe.c | 2 +- sound/soc/qcom/qdsp6/q6afe.h | 2 +- 3 files changed, 108 insertions(+), 105 deletions(-) -- 2.20.1

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[PATCH v2 OLK-6.6 0/2] vmemmap optimize bugfix
by Yuan Can 07 Mar '24

07 Mar '24

Yuan Can (2): mm: hugetlb_vmemmap: fix hugetlb page number decrease failed on movable nodes mm: hugetlb_vmemmap: allow alloc vmemmap pages fallback to other nodes mm/hugetlb_vmemmap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) -- 2.17.1

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[PATCH OLK-6.6 0/2] vmemmap optimize bugfix
by Yuan Can 07 Mar '24

07 Mar '24

Yuan Can (2): mm: hugetlb_vmemmap: fix hugetlb page number decrease failed on movable nodes mm: hugetlb_vmemmap: allow alloc vmemmap pages fallback to other nodes mm/hugetlb_vmemmap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) -- 2.17.1

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