December 2023 - Kernel - mailweb.openeuler.org

[PATCH OLK-5.10 0/2] net: Backport bugfixes from mainline
by Ziyang Xuan 23 Dec '23

23 Dec '23

Backport bugfixes from mainline. Muchun Song (1): tcp: use alloc_large_system_hash() to allocate table_perturb Paolo Abeni (1): udp: skip L4 aggregation for UDP tunnel packets net/ipv4/inet_hashtables.c | 10 ++++++---- net/ipv4/udp_offload.c | 17 ++++++++++------- 2 files changed, 16 insertions(+), 11 deletions(-) -- 2.25.1

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[PATCH OLK-5.10 0/2] fs: mitigatin cacheline false sharing in struct file
by Xie XiuQi 23 Dec '23

23 Dec '23

The cache false-sharing exists in the struct file, for syscall test case of Unixbench. In a system with a 128B cacheline size, we force set it to 64B alignment to get a better performance. If we use alignment, it would waste ~192 bytes at worst case for each file struct. If unsure, say N. Xie XiuQi (2): fs: mitigatin cacheline false sharing in struct file fs: enable CONFIG_FILE_MITIGATION_FALSE_SHARING by default on arm64 arch/arm64/configs/openeuler_defconfig | 1 + fs/Kconfig | 13 +++++++++ fs/file_table.c | 37 +++++++++++++++++++++++--- 3 files changed, 48 insertions(+), 3 deletions(-) -- 2.20.1

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[PATCH OLK-6.6 0/4] Fix smmu pgtable prfetch and add support for ras features
by Zhang Zekun 23 Dec '23

23 Dec '23

Fix the pgtable prefetch problem, besides add some ras features which is used in ascend scenarios. Zhang Zekun (4): iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch mm: memory-failure: Directly return the task for specific use ACPI: APEI: Don't call notifier again in ts senario mm/hwpoison: Add to check is a page is hwpoisoned arch/arm64/Kconfig | 13 +++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 +++++++++ arch/arm64/tools/cpucaps | 1 + drivers/acpi/apei/ghes.c | 3 ++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 +++++++++++++ include/linux/mm.h | 5 ++++ mm/Kconfig | 9 ++++++ mm/memory-failure.c | 32 +++++++++++++++++++++ 9 files changed, 98 insertions(+) -- 2.17.1

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[PATCH OLK-6.6 0/4] Add L3T and LPDDRC PMU
by Chen Jun 23 Dec '23

23 Dec '23

From: c00424029 <c00424029(a)huawei.com> Chen Jun (4): perf: hisi: Make irq shared perf: hisi: Fix read sccl_id and ccl_id error in some platform perf: hisi: Add support for HiSilicon SoC L3T PMU perf: hisi: Add support for HiSilicon SoC LPDDRC PMU arch/arm64/configs/openeuler_defconfig | 2 + drivers/perf/hisilicon/Kconfig | 18 + drivers/perf/hisilicon/Makefile | 2 + drivers/perf/hisilicon/hisi_uncore_l3t_pmu.c | 403 +++++++++++++++++ .../perf/hisilicon/hisi_uncore_lpddrc_pmu.c | 408 ++++++++++++++++++ drivers/perf/hisilicon/hisi_uncore_pmu.c | 21 +- 6 files changed, 847 insertions(+), 7 deletions(-) create mode 100644 drivers/perf/hisilicon/hisi_uncore_l3t_pmu.c create mode 100644 drivers/perf/hisilicon/hisi_uncore_lpddrc_pmu.c -- 2.17.1

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[PATCH OLK-6.6 0/3] files cgroup:merged patch
by chenridong 23 Dec '23

23 Dec '23

Binder Makin (1): cgroups: Resource controller for open files Lu Jialin (1): enable CONFIG_CGROUP_FILES in openeuler_defconfig for x86 and arm64 Yang Yingliang (1): cgroup/files: support boot parameter to control if disable files cgroup .../admin-guide/kernel-parameters.txt | 7 +- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/Makefile | 1 + fs/file.c | 68 +++- fs/filescontrol.c | 312 ++++++++++++++++++ include/linux/cgroup-defs.h | 8 +- include/linux/cgroup_subsys.h | 4 + include/linux/fdtable.h | 1 + include/linux/filescontrol.h | 40 +++ init/Kconfig | 10 + 11 files changed, 445 insertions(+), 8 deletions(-) create mode 100644 fs/filescontrol.c create mode 100644 include/linux/filescontrol.h -- 2.34.1

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[PATCH OLK-6.6 0/4] Fix smmu pgtable prfetch and add support
by Zhang Zekun 23 Dec '23

23 Dec '23

Fix the pgtable prefetch problem, besides add some ras features which is used in ascend scenarios. Zhang Zekun (4): iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch mm: memory-failure: Directly return the task for specific use ACPI: APEI: Don't call notifier again in ts senario mm/hwpoison: Add to check is a page is hwpoisoned arch/arm64/Kconfig | 13 +++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 +++++++++ arch/arm64/tools/cpucaps | 1 + drivers/acpi/apei/ghes.c | 3 ++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 +++++++++++++ include/linux/mm.h | 5 ++++ mm/Kconfig | 9 ++++++ mm/memory-failure.c | 32 +++++++++++++++++++++ 9 files changed, 98 insertions(+) -- 2.17.1

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[PATCH OLK-6.6 00/33] Support kernel livepatching
by Zheng Yejian 23 Dec '23

23 Dec '23

Zheng Yejian (33): livepatch/core: Allow implementation without ftrace livepatch/core: Reuse common codes in the solution without ftrace Revert "x86/insn: Make insn_complete() static" livepatch/x86: Support livepatch without ftrace livepatch/core: Disable support for replacing livepatch/core: Restrict livepatch patched/unpatched when plant kprobe livepatch/core: Support load and unload hooks livepatch: samples: Adapt livepatch-sample for solution without ftrace livepatch/core: Support jump_label livepatch: Fix crash when access the global variable in hook livepatch: Fix patching functions which have static_call livepatch/core: Avoid conflict with static {call,key} livepatch/arm64: Support livepatch without ftrace livepatch/core: Revert module_enable_ro and module_disable_ro livepatch: Enable livepatch configs in openeuler_defconfig arm/module: Use plt section indices for relocations livepatch/core: Add support for arm for klp relocation livepatch/arm: Support livepatch without ftrace livepatch/ppc32: Support livepatch without ftrace livepatch: Use breakpoint exception to optimize enabling livepatch livepatch/x86: Support breakpoint exception optimization livepatch: Add arch_klp_init livepatch/arm64: Support breakpoint exception optimization livepatch/arm: Support breakpoint exception optimization livepatch: Add klp_module_delete_safety_check livepatch/x86: Add arch_klp_module_check_calltrace livepatch/arm64: Add arch_klp_module_check_calltrace livepatch/arm: Add arch_klp_module_check_calltrace livepatch: Bypass dead thread when check calltrace livepatch/ppc64: Implement livepatch without ftrace for ppc64be livepatch/ppc64: Sample testcase fix ppc64 livepatch/powerpc: Support breakpoint exception optimization livepatch/powerpc: Add arch_klp_module_check_calltrace Documentation/filesystems/proc.rst | 2 +- arch/arm/Kconfig | 3 + arch/arm/include/asm/livepatch.h | 61 + arch/arm/include/asm/module.h | 4 +- arch/arm/kernel/Makefile | 1 + arch/arm/kernel/ftrace.c | 4 +- arch/arm/kernel/livepatch.c | 322 ++++ arch/arm/kernel/module-plts.c | 22 +- arch/arm/kernel/module.c | 4 +- arch/arm64/Kconfig | 3 + arch/arm64/configs/openeuler_defconfig | 12 + arch/arm64/include/asm/brk-imm.h | 1 + arch/arm64/include/asm/debug-monitors.h | 2 + arch/arm64/include/asm/livepatch.h | 56 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/livepatch.c | 290 ++++ arch/powerpc/Kconfig | 5 +- arch/powerpc/include/asm/livepatch.h | 80 + arch/powerpc/include/asm/module.h | 3 + arch/powerpc/kernel/Makefile | 2 + arch/powerpc/kernel/livepatch.c | 357 +++++ arch/powerpc/kernel/livepatch_32.c | 124 ++ arch/powerpc/kernel/livepatch_64.c | 264 ++++ arch/powerpc/kernel/livepatch_tramp.S | 126 ++ arch/powerpc/kernel/module_64.c | 109 ++ arch/powerpc/kernel/traps.c | 8 + arch/s390/Kconfig | 2 +- arch/s390/configs/debug_defconfig | 1 + arch/s390/configs/defconfig | 1 + arch/x86/Kconfig | 3 +- arch/x86/configs/openeuler_defconfig | 12 +- arch/x86/include/asm/insn.h | 7 + arch/x86/include/asm/livepatch.h | 43 + arch/x86/kernel/Makefile | 1 + arch/x86/kernel/livepatch.c | 376 +++++ arch/x86/kernel/module.c | 2 +- arch/x86/kernel/traps.c | 10 + arch/x86/lib/insn.c | 7 - include/linux/jump_label.h | 10 + include/linux/livepatch.h | 129 +- include/linux/livepatch_sched.h | 6 +- include/linux/module.h | 33 + include/linux/moduleloader.h | 4 +- include/linux/static_call.h | 6 + kernel/jump_label.c | 22 + kernel/livepatch/Kconfig | 78 +- kernel/livepatch/Makefile | 3 +- kernel/livepatch/core.c | 1563 +++++++++++++++++++- kernel/livepatch/core.h | 16 + kernel/module/main.c | 16 +- kernel/module/strict_rwx.c | 17 + kernel/static_call_inline.c | 20 + lib/Kconfig.debug | 2 +- samples/livepatch/Makefile | 2 + samples/livepatch/livepatch-sample.c | 47 + tools/arch/x86/include/asm/insn.h | 7 + tools/arch/x86/lib/insn.c | 7 - tools/testing/selftests/bpf/config.aarch64 | 1 + tools/testing/selftests/bpf/config.s390x | 1 + tools/testing/selftests/livepatch/README | 1 + tools/testing/selftests/livepatch/config | 1 + 61 files changed, 4266 insertions(+), 57 deletions(-) create mode 100644 arch/arm/include/asm/livepatch.h create mode 100644 arch/arm/kernel/livepatch.c create mode 100644 arch/arm64/include/asm/livepatch.h create mode 100644 arch/arm64/kernel/livepatch.c create mode 100644 arch/powerpc/kernel/livepatch.c create mode 100644 arch/powerpc/kernel/livepatch_32.c create mode 100644 arch/powerpc/kernel/livepatch_64.c create mode 100644 arch/powerpc/kernel/livepatch_tramp.S create mode 100644 arch/x86/include/asm/livepatch.h create mode 100644 arch/x86/kernel/livepatch.c -- 2.25.1

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[PATCH OLK-6.6 00/10] files cgroup all patch
by chenridong 23 Dec '23

23 Dec '23

Binder Makin (1): cgroups: Resource controller for open files Hou Tao (1): cgroup/files: use task_get_css() to get a valid css during dup_fd() Lu Jialin (2): fs: fix files.usage bug when move tasks fs/filescontrol.c: fix warning:large integer implicitly truncated to unsigned type Wenkai Lin (1): iommu/arm-smmu-v3: disable stall for quiet_cd Yang Yingliang (1): cgroup/files: support boot parameter to control if disable files cgroup Yu Kuai (1): fs/filescontrol: add a switch to enable / disable accounting of open fds Zhang Xiaoxu (2): files_cgroup: fix error pointer when kvm_vm_worker_thread files_cgroup: Fix soft lockup when refcnt overflow. zhangyi (F) (1): filescontrol: silence suspicious RCU warning -- 2.34.1

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[PATCH openEuler-1.0-LTS] net: check vlan filter feature in vlan_vids_add_by_dev() and vlan_vids_del_by_dev()
by Liu Jian 22 Dec '23

22 Dec '23

mainline inclusion from mainline-v01a564bab4876007ce35f312e16797dfe40e4823 remotes/mainline/master commit 01a564bab4876007ce35f312e16797dfe40e4823 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8KNM7 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- I got the below warning trace: WARNING: CPU: 4 PID: 4056 at net/core/dev.c:11066 unregister_netdevice_many_notify CPU: 4 PID: 4056 Comm: ip Not tainted 6.7.0-rc4+ #15 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 RIP: 0010:unregister_netdevice_many_notify+0x9a4/0x9b0 Call Trace: rtnl_dellink rtnetlink_rcv_msg netlink_rcv_skb netlink_unicast netlink_sendmsg __sock_sendmsg ____sys_sendmsg ___sys_sendmsg __sys_sendmsg do_syscall_64 entry_SYSCALL_64_after_hwframe It can be repoduced via: ip netns add ns1 ip netns exec ns1 ip link add bond0 type bond mode 0 ip netns exec ns1 ip link add bond_slave_1 type veth peer veth2 ip netns exec ns1 ip link set bond_slave_1 master bond0 [1] ip netns exec ns1 ethtool -K bond0 rx-vlan-filter off [2] ip netns exec ns1 ip link add link bond_slave_1 name bond_slave_1.0 type vlan id 0 [3] ip netns exec ns1 ip link add link bond0 name bond0.0 type vlan id 0 [4] ip netns exec ns1 ip link set bond_slave_1 nomaster [5] ip netns exec ns1 ip link del veth2 ip netns del ns1 This is all caused by command [1] turning off the rx-vlan-filter function of bond0. The reason is the same as commit 01f4fd270870 ("bonding: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves"). Commands [2] [3] add the same vid to slave and master respectively, causing command [4] to empty slave->vlan_info. The following command [5] triggers this problem. To fix this problem, we should add VLAN_FILTER feature checks in vlan_vids_add_by_dev() and vlan_vids_del_by_dev() to prevent incorrect addition or deletion of vlan_vid information. Fixes: 348a1443cc43 ("vlan: introduce functions to do mass addition/deletion of vids by another device") Signed-off-by: Liu Jian <liujian56(a)huawei.com> Signed-off-by: Paolo Abeni <pabeni(a)redhat.com> (cherry picked from commit 01a564bab4876007ce35f312e16797dfe40e4823) Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- net/8021q/vlan_core.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 4f60e86f4b8d3..e92c914316cbd 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -380,6 +380,8 @@ int vlan_vids_add_by_dev(struct net_device *dev, return 0; list_for_each_entry(vid_info, &vlan_info->vid_list, list) { + if (!vlan_hw_filter_capable(by_dev, vid_info->proto)) + continue; err = vlan_vid_add(dev, vid_info->proto, vid_info->vid); if (err) goto unwind; @@ -390,6 +392,8 @@ int vlan_vids_add_by_dev(struct net_device *dev, list_for_each_entry_continue_reverse(vid_info, &vlan_info->vid_list, list) { + if (!vlan_hw_filter_capable(by_dev, vid_info->proto)) + continue; vlan_vid_del(dev, vid_info->proto, vid_info->vid); } @@ -409,8 +413,11 @@ void vlan_vids_del_by_dev(struct net_device *dev, if (!vlan_info) return; - list_for_each_entry(vid_info, &vlan_info->vid_list, list) + list_for_each_entry(vid_info, &vlan_info->vid_list, list) { + if (!vlan_hw_filter_capable(by_dev, vid_info->proto)) + continue; vlan_vid_del(dev, vid_info->proto, vid_info->vid); + } } EXPORT_SYMBOL(vlan_vids_del_by_dev); -- 2.34.1

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[PATCH OLK-5.10] mm/memcontrol: mitigate cacheline false sharing in struct mem_cgroup
by Zeng Heng 22 Dec '23

22 Dec '23

hulk inclusion category: performance bugzilla: https://gitee.com/openeuler/kernel/issues/I8QP0D -------------------------------- Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- mm/memcontrol.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c9ffc793e42b..42ed5778062a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6261,6 +6261,11 @@ static void free_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node) kfree(pn); } +struct mem_cgroup_padding { + u64 padding[6]; + struct mem_cgroup memcg; +} __attribute__((__packed__)); + static void __mem_cgroup_free(struct mem_cgroup *memcg) { int node; @@ -6269,7 +6274,8 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg) free_mem_cgroup_per_node_info(memcg, node); free_percpu(memcg->vmstats_percpu); memcg_free_swap_device(memcg); - kfree(memcg); + + kfree(container_of(memcg, struct mem_cgroup_padding, memcg)); } static void mem_cgroup_free(struct mem_cgroup *memcg) @@ -6280,19 +6286,22 @@ static void mem_cgroup_free(struct mem_cgroup *memcg) static struct mem_cgroup *mem_cgroup_alloc(void) { + struct mem_cgroup_padding *memcg_padding; struct mem_cgroup *memcg; unsigned int size; int node; int __maybe_unused i; long error = -ENOMEM; - size = sizeof(struct mem_cgroup); + size = sizeof(struct mem_cgroup_padding); size += nr_node_ids * sizeof(struct mem_cgroup_per_node *); - memcg = kzalloc(size, GFP_KERNEL); - if (!memcg) + memcg_padding = kzalloc(size, GFP_KERNEL); + if (!memcg_padding) return ERR_PTR(error); + memcg = &memcg_padding->memcg; + if (memcg_alloc_swap_device(memcg)) goto fail; -- 2.25.1

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