- Kernel - mailweb.openeuler.org

[PATCH openEuler-22.03-LTS-SP2 0/3] Revert "locking/rwsem: Prevent
by Zheng Zengkai 21 Jun '23

21 Jun '23

2f06f702925b ("locking/rwsem: Prevent potential lock starvation"): This patch may have some impact on reader performance as it reduces reader optimistic spinning especially if the lock critical sections are short the number of contending readers are small. This patch will lead to 30%+ performance degradation to fio write_iops_blocksize 4KB testcase, and we stress the system with mysql tpcc for 12 hours, no hungtask occur, So revert this patchset temporarily. Zheng Zengkai (3): Revert "locking/rwsem: Prevent potential lock starvation" Revert "locking/rwsem: Pass the current atomic count to rwsem_down_read_slowpath()" Revert "locking/rwsem: Better collate rwsem_read_trylock()" kernel/locking/rwsem.c | 56 ++++++++++++++---------------------------- 1 file changed, 19 insertions(+), 37 deletions(-) -- 2.20.1

2 4

[PATCH openEuler-22.03-LTS-SP2 0/1] uacce: fix the uacce isolattion reference counting error
by Wenkai Lin 21 Jun '23

21 Jun '23

From: JiangShui Yang <yangjiangshui(a)h-partners.com> Due to the process change of the lock, A thread invokes the 'put_queue' twice. The value of uacce reference counting becomes a negative number. The 'fops_open' and 'fops_release' are symmetrical. So move the process of decrement to 'fops_release' from 'put_queue'. Kai Ye (1): uacce: fix the uacce isolattion reference counting error drivers/misc/uacce/uacce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.30.0

2 2

[PATCH OLK-5.10 0/1] fs/stat: make tmp variable 16-bytes aligned in copy stat
by Yang Yingliang 21 Jun '23

21 Jun '23

The tmp variable is used to copy_to_user(), it has better performance if the address accesseed by ldp instruction is 16 bytes aligned on arm64. The performance of nginx test is improved after this patch: http "Connection: close" 1.11% http "Connection: keep-alive" 2.11% https "Connection: close" 1.56% https "Connection: keep-alive" 0.18% Yang Yingliang (1): fs/stat: make tmp variable 16-bytes aligned in copy stat fs/stat.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) -- 2.25.1

2 2

[PATCH OLK-5.10 0/2] fix memleak with efi_fake_mem
by Wupeng Ma 21 Jun '23

21 Jun '23

From: Ma Wupeng <mawupeng1(a)huawei.com> 1. fix memleak with efi_fake_mem 2. disable efi_fake_mem support by default for arm64 Ma Wupeng (2): efi: Fix UAF for arm64 when enable efi_fake_mem config: Disable EFI_FAKE_MEMMAP support for arm64 by default arch/arm64/configs/openeuler_defconfig | 3 +-- drivers/firmware/efi/fake_mem.c | 13 +++++++++++++ 2 files changed, 14 insertions(+), 2 deletions(-) -- 2.25.1

2 3

[PATCH OLK-5.10 0/3] fix memory reliable related issues
by Wupeng Ma 21 Jun '23

21 Jun '23

From: Ma Wupeng <mawupeng1(a)huawei.com> Fix memory reliable related issues. Ma Wupeng (3): mm: mem_reliable: Fix reliable page counter mismatch problem mm: mem_reliable: Update reliable page counter to zero if underflows efi: Disable mirror feature during crashkernel drivers/firmware/efi/efi.c | 6 ++++++ include/linux/mem_reliable.h | 15 +++++++++++++-- mm/memory.c | 1 + 3 files changed, 20 insertions(+), 2 deletions(-) -- 2.25.1

2 4

[PATCH OLK-5.10] memcg: fix implicit declaration of memcg_print_bad_task()
by Liu Shixin 21 Jun '23

21 Jun '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6NYW4 CVE: NA -------------------------------- Fix implicit declaration of function 'memcg_print_bad_task'. Fixes: 9cd6f55e9c33 ("mm: oom: move memcg_print_bad_task() out of mem_cgroup_scan_tasks()") Signed-off-by: Liu Shixin <liushixin2(a)huawei.com> --- include/linux/memcontrol.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 5b8982e95876..e1c24b0056d0 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -420,6 +420,8 @@ bool memcg_low_priority_scan_tasks(int (*)(struct task_struct *, void *), void memcg_print_bad_task(struct oom_control *oc); extern int sysctl_memcg_qos_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos); +#else +void memcg_print_bad_task(struct oom_control *oc); #endif /* @@ -1695,6 +1697,10 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, { return 0; } + +static inline void memcg_print_bad_task(struct oom_control *oc) +{ +} #endif /* CONFIG_MEMCG */ /* idx can be of type enum memcg_stat_item or node_stat_item */ -- 2.25.1

2 1

[PATCH opwnEuler-22.03-LTS-SP2 0/1] uacce: remove uacce device refcnt
by Wenkai Lin 21 Jun '23

21 Jun '23

From: JiangShui Yang <yangjiangshui(a)h-partners.com> Delete the reference counting so that the isolation policy can be dynamically configured. Wenkai Lin (1): uacce: remove uacce device refcnt drivers/misc/uacce/uacce.c | 5 ----- include/linux/uacce.h | 2 -- 2 files changed, 7 deletions(-) -- 2.30.0

1 1

[PATCH openEuler-22.03-LTS-SP2 0/2] Fix NULL pointer and Keep PERF_PMU_CAP_EXCLUSIVE
by Junhao He 20 Jun '23

20 Jun '23

1) Fix NULL pointer for hisi_ptt 2) Keep to advertise PERF_PMU_CAP_EXCLUSIVE. Such ptt pmus can only have one event scheduled at a time. Junhao He (2): hwtracing: hisi_ptt: Add dummy callback pmu::read() hwtracing: hisi_ptt: Keep to advertise PERF_PMU_CAP_EXCLUSIVE drivers/hwtracing/ptt/hisi_ptt.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) -- 2.33.0

2 3

[PATCH OLK-5.10 0/2] nbd: validate the block size in nbd_set_size
by Zhong Jinghua 20 Jun '23

20 Jun '23

nbd: validate the block size in nbd_set_size Christoph Hellwig (1): nbd: validate the block size in nbd_set_size Zhong Jinghua (1): nbd: fix incomplete validation of ioctl arg drivers/block/nbd.c | 51 ++++++++++++++++++--------------------------- 1 file changed, 20 insertions(+), 31 deletions(-) -- 2.31.1

2 3

[PATCH openEuler-22.03-LTS-SP2 v2 0/2] Fix some warning messages in netacc
by Liu Jian 20 Jun '23

20 Jun '23

v1->v2: add bugzilla tag. Fix below warning messages: libbpf: Error in bpf_create_map_xattr(redissock_map):ERROR: strerror_r(-524)=22(-524). Retrying without BTF. rmmod: ERROR: Module localip is not currently loaded Hengqi Chen (1): libbpf: Support uniform BTF-defined key/value specification across all BPF maps Liu Jian (1): tools: ignore one warning message tools/lib/bpf/libbpf.c | 24 ++++++++++++++++++++++++ tools/netacc/net-acc | 2 +- 2 files changed, 25 insertions(+), 1 deletion(-) -- 2.34.1

2 3