Kernel August 2021

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【Meeting Notice】openEuler kernel 技术分享第九期 & 双周例会 Time: 2021-08-06 14:00-18:00
by Meeting Book 03 Aug '21

03 Aug '21

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[PATCH openEuler-1.0-LTS 0/2] prefetch bugfix
by Cheng Jian 02 Aug '21

02 Aug '21

prefetch bugfix Li Ruilin (2): bcache: do not collect data insert info created by write_moving bcache: always record start time of a sample drivers/md/bcache/request.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) -- 2.25.1

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[PATCH kernel-4.19 01/10] tcp_comp: add Kconfig for tcp payload compression
by Yang Yingliang 02 Aug '21

02 Aug '21

From: Wei Yongjun <weiyongjun1(a)huawei.com> hulk inclusion category: feature bugzilla: NA CVE: NA ------------------------------------------------- Add config item CONFIG_TCP_COMP for tcp payload compression. This allows payload compression handling of the TCP protocol to be done in-kernel. This patch only adds the CONFIG_TCP_COMP config, tcp compression capability is implemented later. Signed-off-by: Wei Yongjun <weiyongjun1(a)huawei.com> Signed-off-by: Wang Yufen <wangyufen(a)huawei.com> Reviewed-by: Yue Haibing <yuehaibing(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- net/ipv4/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 2e12f848203a4..883a638648e1f 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -754,3 +754,11 @@ config TCP_MD5SIG on the Internet. If unsure, say N. + +config TCP_COMP + bool "TCP: Transport Layer Compression support" + ---help--- + Enable kernel payload compression support for TCP protocol. This allows + payload compression handling of the TCP protocol to be done in-kernel. + + If unsure, say Y. -- 2.25.1

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[PATCH openEuler-1.0-LTS 000/109] backport patches from linux-4.19
by Yang Yingliang 02 Aug '21

02 Aug '21

Al Viro (1): iov_iter_fault_in_readable() should do nothing in xarray case Alex Shi (1): mm: add VM_WARN_ON_ONCE_PAGE() macro Alex Williamson (1): vfio/pci: Handle concurrent vma faults Alexander Ovechkin (1): net: send SYNACK packet with accepted fwmark Anirudh Rayabharam (1): ext4: fix kernel infoleak via ext4_extent_header Casey Chen (1): nvme-pci: do not call nvme_dev_remove_admin from nvme_remove Dan Carpenter (1): scsi: scsi_dh_alua: Fix signedness bug in alua_rtpg() Dimitri John Ledkov (1): lib/decompress_unlz4.c: correctly handle zero-padding around initrds. Dmitry Bogdanov (1): scsi: target: Fix protect handling in WRITE SAME(32) Dmitry Torokhov (1): i2c: core: Disable client irq on reboot/shutdown Eric Dumazet (8): pkt_sched: sch_qfq: fix qfq_change_class() error path vxlan: add missing rcu_read_lock() in neigh_reduce() ipv6: exthdrs: do not blindly use init_net ipv6: fix out-of-bound access in ip6_parse_tlv() tcp: annotate data races around tp->mtu_info ipv6: tcp: drop silly ICMPv6 packet too big messages udp: annotate data races around unix_sk(sk)->gso_size net/tcp_fastopen: fix data races around tfo_active_disable_stamp Gabriel Krisman Bertazi (1): dm multipath: use updated MPATHF_QUEUE_IO on mapping for bio-based mpath Gao Xiang (1): nfs: fix acl memory leak of posix_acl_create() Hangbin Liu (1): net: ip_tunnel: fix mtu calculation for ETHER tunnel devices Hannes Reinecke (1): scsi: scsi_dh_alua: Check for negative result value Haoran Luo (1): tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop. Hugh Dickins (16): mm/thp: fix __split_huge_pmd_locked() on shmem migration entry mm/thp: make is_huge_zero_pmd() safe and quicker mm/thp: try_to_unmap() use TTU_SYNC for safe splitting mm/thp: fix vma_address() if virtual address below file offset mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page() mm: page_vma_mapped_walk(): use page for pvmw->page mm: page_vma_mapped_walk(): settle PageHuge on entry mm: page_vma_mapped_walk(): use pmde for *pvmw->pmd mm: page_vma_mapped_walk(): prettify PVMW_MIGRATION block mm: page_vma_mapped_walk(): crossing page table boundary mm: page_vma_mapped_walk(): add a level of indentation mm: page_vma_mapped_walk(): use goto instead of while (1) mm: page_vma_mapped_walk(): get vma_address_end() earlier mm/thp: fix page_vma_mapped_walk() if THP mapped by ptes mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk() mm, futex: fix shared futex pgoff on shmem huge page Jakub Kicinski (1): net: ip: avoid OOM kills with large UDP sends over loopback Jason Ekstrand (1): dma-buf/sync_file: Don't leak fences on merge failure Jason Gunthorpe (1): vfio-pci: Use io_remap_pfn_range() for PCI IO memory Javed Hasan (1): scsi: libfc: Fix array index out of bound exception Joe Thornber (1): dm space maps: don't reset space map allocation cursor when committing Jue Wang (1): mm/thp: fix page_address_in_vma() on file THP tails Krzysztof Wilczyński (2): ACPI: sysfs: Fix a buffer overrun problem with description_show() PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun Liu Shixin (1): netlabel: Fix memory leak in netlbl_mgmt_add_common Longpeng(Mike) (1): vsock: notify server to shutdown when client has pending signal Maciej Żenczykowski (1): bpf: Do not change gso_size during bpf_skb_change_proto() ManYi Li (1): scsi: sr: Return appropriate error code when disk is ejected Marcelo Henrique Cerri (1): proc: Avoid mixing integer types in mem_rw() Mario Limonciello (1): ACPI: processor idle: Fix up C-state latency if not ordered Miao Wang (1): net/ipv4: swap flow ports when validating source Miaohe Lin (3): mm/rmap: remove unneeded semicolon in page_not_mapped() mm/rmap: use page_not_mapped in try_to_unmap() mm/huge_memory.c: don't discard hugepage if other processes are mapping it Michael S. Tsirkin (1): virtio_net: move tx vq operation under tx queue lock Mike Christie (4): scsi: iscsi: Add iscsi_cls_conn refcount helpers scsi: iscsi: Fix shost->max_id use scsi: qedi: Fix null ref during abort handling scsi: iscsi: Fix iface sysfs attr detection Miklos Szeredi (1): fuse: check connected before queueing on fpq->io Mikulas Patocka (3): dm writecache: fix data corruption when reloading the target dm writecache: return the exact table values that were set dm writecache: fix writing beyond end of underlying device when shrinking Mimi Zohar (1): evm: fix writing <securityfs>/evm overflow Muchun Song (1): writeback: fix obtain a reference to a freeing memcg css Nicolas Dichtel (1): ipv6: fix 'disable_policy' for fwd packets Nikolay Aleksandrov (1): net: bridge: multicast: fix PIM hello router port marking race Odin Ugedal (1): sched/fair: Fix CFS bandwidth hrtimer expiry type Pablo Neira Ayuso (3): netfilter: nft_exthdr: check for IPv6 packet before further processing netfilter: nft_osf: check for TCP packet before further processing netfilter: nft_tproxy: restrict support to TCP and UDP transport protocols Pan Dong (1): ext4: fix avefreec in find_group_orlov Peilin Ye (1): net/sched: act_skbmod: Skip non-Ethernet packets Petr Mladek (2): kthread_worker: split code for canceling the delayed work timer kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Petr Pavlu (1): ipmi/watchdog: Stop watchdog timer when the current action is 'none' Quat Le (1): scsi: core: Retry I/O for Notify (Enable Spinup) Required error Richard Fitzgerald (1): lib: vsprintf: Fix handling of number field widths in vsscanf Roberto Sassu (2): evm: Execute evm_inode_init_security() only when an HMAC key is loaded evm: Refuse EVM_ALLOW_METADATA_WRITES only if an HMAC key is loaded Steffen Klassert (1): xfrm: Fix error reporting in xfrm_state_construct. Stephen Brennan (1): ext4: use ext4_grp_locked_error in mb_find_extent Steven Rostedt (VMware) (1): tracing: Do not reference char * as a string in histograms Sunwook Eom (1): dm verity fec: fix hash block number in verity_fec_decode Taehee Yoo (1): net: validate lwtstate->data before returning from skb_tunnel_info() Thomas Gleixner (1): x86/fpu: Limit xstate copy size in xstateregs_set() Trond Myklebust (3): NFS: nfs_find_open_context() may only select open files NFSv4: Initialise connection to the server in nfs4_alloc_client() NFSv4/pNFS: Don't call _nfs4_pnfs_v3_ds_connect multiple times Tyrel Datwyler (1): scsi: core: Fix bad pointer dereference when ehandler kthread is invalid Vasily Averin (1): netfilter: ctnetlink: suspicious RCU usage in ctnetlink_dump_helpinfo Willy Tarreau (1): ipv6: use prandom_u32() for ID generation Wolfgang Bumiller (1): net: bridge: sync fdb to new unicast-filtering ports Xianting Tian (1): virtio_net: Remove BUG() to avoid machine dead Xie Yongji (3): virtio-blk: Fix memory leak among suspend/resume procedure virtio_net: Fix error handling in virtnet_restore() virtio_console: Assure used length from device is limited Xin Long (1): sctp: update active_key for asoc when old key is being replaced Yajun Deng (1): net: sched: cls_api: Fix the the wrong parameter Yang Shi (1): mm: thp: replace DEBUG_VM BUG with VM_WARN when unmap fails for split Yang Yingliang (1): ext4: return error code when ext4_fill_flex_info() fails Yun Zhou (2): seq_buf: Make trace_seq_putmem_hex() support data longer than 8 seq_buf: Fix overflow in seq_buf_putmem_hex() Zhang Yi (2): ext4: correct the cache_nr in tracepoint ext4_es_shrink_exit ext4: remove check for zero nr_to_scan in ext4_es_scan() Zhihao Cheng (1): nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING Documentation/ABI/testing/evm | 26 ++- arch/x86/kernel/fpu/regset.c | 2 +- drivers/acpi/device_sysfs.c | 2 +- drivers/acpi/processor_idle.c | 40 +++++ drivers/block/virtio_blk.c | 2 + drivers/char/ipmi/ipmi_watchdog.c | 22 +-- drivers/char/virtio_console.c | 4 +- drivers/dma-buf/sync_file.c | 13 +- drivers/i2c/i2c-core-base.c | 3 + drivers/md/dm-mpath.c | 6 +- drivers/md/dm-verity-fec.c | 2 +- drivers/md/dm-writecache.c | 102 +++++++---- .../md/persistent-data/dm-space-map-disk.c | 9 +- .../persistent-data/dm-space-map-metadata.c | 9 +- drivers/net/virtio_net.c | 29 +++- drivers/net/vxlan.c | 2 + drivers/nvme/host/pci.c | 5 +- drivers/pci/pci-label.c | 2 +- drivers/scsi/be2iscsi/be_main.c | 4 +- drivers/scsi/bnx2i/bnx2i_iscsi.c | 2 +- drivers/scsi/cxgbi/libcxgbi.c | 4 +- drivers/scsi/device_handler/scsi_dh_alua.c | 11 +- drivers/scsi/hosts.c | 1 + drivers/scsi/libfc/fc_rport.c | 13 +- drivers/scsi/libiscsi.c | 7 +- drivers/scsi/qedi/qedi_fw.c | 2 +- drivers/scsi/qedi/qedi_main.c | 2 +- drivers/scsi/scsi_lib.c | 1 + drivers/scsi/scsi_transport_iscsi.c | 102 +++++------ drivers/scsi/sr.c | 2 + drivers/target/target_core_sbc.c | 35 ++-- drivers/vfio/pci/vfio_pci.c | 31 +++- fs/ext4/extents.c | 3 + fs/ext4/extents_status.c | 4 +- fs/ext4/ialloc.c | 11 +- fs/ext4/mballoc.c | 9 +- fs/ext4/super.c | 1 + fs/fs-writeback.c | 9 +- fs/fuse/dev.c | 9 + fs/nfs/inode.c | 4 + fs/nfs/nfs3proc.c | 4 +- fs/nfs/nfs4client.c | 82 ++++----- fs/nfs/pnfs_nfs.c | 52 +++--- fs/proc/base.c | 2 +- include/linux/huge_mm.h | 8 +- include/linux/hugetlb.h | 16 -- include/linux/mm.h | 3 + include/linux/mmdebug.h | 13 ++ include/linux/nfs_fs.h | 1 + include/linux/pagemap.h | 13 +- include/linux/rmap.h | 3 +- include/net/dst_metadata.h | 4 +- include/scsi/scsi_transport_iscsi.h | 2 + kernel/futex.c | 2 +- kernel/kthread.c | 77 ++++++--- kernel/sched/fair.c | 4 +- kernel/trace/ring_buffer.c | 28 ++- kernel/trace/trace_events_hist.c | 6 +- lib/decompress_unlz4.c | 8 + lib/iov_iter.c | 2 +- lib/kstrtox.c | 13 +- lib/kstrtox.h | 2 + lib/seq_buf.c | 8 +- lib/vsprintf.c | 82 +++++---- mm/huge_memory.c | 58 ++++--- mm/hugetlb.c | 5 +- mm/internal.h | 53 ++++-- mm/memory.c | 41 +++++ mm/page_vma_mapped.c | 160 +++++++++++------- mm/pgtable-generic.c | 4 +- mm/rmap.c | 48 +++--- mm/truncate.c | 43 +++-- net/bridge/br_if.c | 17 +- net/bridge/br_multicast.c | 2 + net/core/filter.c | 4 - net/ipv4/fib_frontend.c | 2 + net/ipv4/ip_output.c | 32 ++-- net/ipv4/ip_tunnel.c | 22 ++- net/ipv4/tcp_fastopen.c | 19 ++- net/ipv4/tcp_ipv4.c | 4 +- net/ipv4/tcp_output.c | 1 + net/ipv4/udp.c | 6 +- net/ipv6/exthdrs.c | 31 ++-- net/ipv6/ip6_output.c | 36 ++-- net/ipv6/output_core.c | 28 +-- net/ipv6/tcp_ipv6.c | 22 ++- net/ipv6/udp.c | 2 +- net/netfilter/nf_conntrack_netlink.c | 3 + net/netfilter/nft_exthdr.c | 3 + net/netfilter/nft_osf.c | 5 + net/netfilter/nft_tproxy.c | 9 +- net/netlabel/netlabel_mgmt.c | 19 ++- net/sched/act_skbmod.c | 12 +- net/sched/cls_api.c | 2 +- net/sched/sch_qfq.c | 8 +- net/sctp/auth.c | 2 + net/vmw_vsock/af_vsock.c | 2 +- net/xfrm/xfrm_user.c | 28 +-- security/integrity/evm/evm_main.c | 2 +- security/integrity/evm/evm_secfs.c | 13 +- 100 files changed, 1092 insertions(+), 638 deletions(-) -- 2.25.1

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[PATCH v2 openEuler-1.0-LTS 00/10] tcp compression
by Wang Yufen 02 Aug '21

02 Aug '21

Wang Hai (1): tcp_comp: allow ignore local tcp connections Wang Yufen (6): tcp_comp: add tcp comp option to SYN and SYN-ACK tcp_comp: add init and cleanup hook for compression tcp_comp: only enable compression for give server ports tcp_comp: add stub proto ops for tcp compression socket tcp_comp: implement recvmsg for tcp compression tcp_comp: open configs for tcp compression Wei Yongjun (3): tcp_comp: add Kconfig for tcp payload compression tcp_comp: add sysctl for enable/disable compression tcp_comp: implement sendmsg for tcp compression arch/arm64/configs/hulk_defconfig | 5 +- arch/arm64/configs/openeuler_defconfig | 5 +- arch/x86/configs/hulk_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 5 +- include/linux/tcp.h | 2 +- include/net/inet_sock.h | 3 +- include/net/sock.h | 1 + include/net/tcp.h | 40 ++ net/ipv4/Kconfig | 11 + net/ipv4/Makefile | 1 + net/ipv4/syncookies.c | 2 + net/ipv4/sysctl_net_ipv4.c | 42 ++ net/ipv4/tcp.c | 6 + net/ipv4/tcp_comp.c | 941 +++++++++++++++++++++++++++++++++ net/ipv4/tcp_input.c | 44 +- net/ipv4/tcp_ipv4.c | 2 + net/ipv4/tcp_minisocks.c | 3 + net/ipv4/tcp_output.c | 53 ++ net/ipv6/syncookies.c | 2 + 19 files changed, 1159 insertions(+), 12 deletions(-) create mode 100644 net/ipv4/tcp_comp.c -- 1.8.3

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[PATCH v2 kernel-4.19 00/10] tcp compression
by Wang Yufen 02 Aug '21

02 Aug '21

1 10

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Kernel August 2021