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[PATCH OLK-6.6 0/8] backport etmem feature from OLK-5.10
by Yuchen Tang 02 Jan '24

02 Jan '24

Kemeng Shi (2): x86: hugepage: use nt copy hugepage to AEP in x86 ugepage: add sysctl for hugepage alloc and mig Yuchen Tang (6): etmem: add etmem scan feature to openEuler etmem: add etmem swap feature to openEuler mm: introduce and export pgdat peer_node mm: alloc pages from pmem's peer node etmem: add original kernel swap enabled options etmem: add swapcache reclaim to etmem arch/arm64/configs/openeuler_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 3 + arch/x86/include/asm/page_64.h | 9 + arch/x86/lib/Makefile | 1 + arch/x86/lib/copy_highpages.c | 107 ++ arch/x86/lib/copy_page_64.S | 73 ++ drivers/acpi/numa/srat.c | 7 + drivers/base/node.c | 15 + fs/proc/Makefile | 3 + fs/proc/base.c | 8 + fs/proc/etmem_proc.c | 216 ++++ fs/proc/etmem_scan.c | 1440 ++++++++++++++++++++++++ fs/proc/etmem_scan.h | 149 +++ fs/proc/etmem_swap.c | 283 +++++ fs/proc/internal.h | 4 + include/linux/etmem.h | 105 ++ include/linux/highmem.h | 17 + include/linux/mm.h | 4 + include/linux/mm_types.h | 6 + include/linux/mmzone.h | 14 + include/linux/swap.h | 2 +- include/uapi/asm-generic/mman-common.h | 4 + mm/Kconfig | 33 + mm/Makefile | 1 + mm/etmem.c | 475 ++++++++ mm/hugetlb.c | 9 + mm/madvise.c | 16 + mm/mm_init.c | 4 + mm/pagewalk.c | 3 + mm/sparse-vmemmap.c | 10 + mm/swap_state.c | 4 + mm/util.c | 5 + mm/vmscan.c | 21 + virt/kvm/kvm_main.c | 6 + 34 files changed, 3059 insertions(+), 1 deletion(-) create mode 100644 arch/x86/lib/copy_highpages.c create mode 100644 fs/proc/etmem_proc.c create mode 100644 fs/proc/etmem_scan.c create mode 100644 fs/proc/etmem_scan.h create mode 100644 fs/proc/etmem_swap.c create mode 100644 include/linux/etmem.h create mode 100644 mm/etmem.c -- 2.33.0

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[PATCH OLK-6.6 0/7] introduce smart_grid zone
by Yipeng Zou 02 Jan '24

02 Jan '24

The patch sets include two parts: 1. patch 1~3: Rebase smart_grid from OLK-5.10 to OLK-6.6 2. patch 4~7: introduce smart_grid zone qos and cpufreq Hui Tang (1): sched: Introduce smart grid scheduling strategy for cfs Wang ShaoBo (2): sched: smart grid: init sched_grid_qos structure on QOS purpose config: enable CONFIG_QOS_SCHED_SMART_GRID by default Yipeng Zou (4): sched: introduce smart grid qos zone smart_grid: introduce /proc/pid/smart_grid_level smart_grid: introduce smart_grid_strategy_ctrl sysctl smart_grid: cpufreq: introduce smart_grid cpufreq control arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/cpufreq/cpufreq.c | 232 ++++++++++++ fs/proc/array.c | 16 + fs/proc/base.c | 78 ++++ include/linux/cpufreq.h | 11 + include/linux/sched.h | 17 + include/linux/sched/grid_qos.h | 135 +++++++ include/linux/sched/sysctl.h | 5 + init/Kconfig | 13 + kernel/fork.c | 12 + kernel/sched/Makefile | 1 + kernel/sched/core.c | 181 +++++++++ kernel/sched/fair.c | 503 ++++++++++++++++++++++++- kernel/sched/grid/Makefile | 2 + kernel/sched/grid/internal.h | 6 + kernel/sched/grid/power.c | 27 ++ kernel/sched/grid/qos.c | 279 ++++++++++++++ kernel/sched/grid/stat.c | 47 +++ kernel/sched/sched.h | 48 ++- kernel/sysctl.c | 23 ++ mm/mempolicy.c | 11 +- 22 files changed, 1638 insertions(+), 11 deletions(-) create mode 100644 include/linux/sched/grid_qos.h create mode 100644 kernel/sched/grid/Makefile create mode 100644 kernel/sched/grid/internal.h create mode 100644 kernel/sched/grid/power.c create mode 100644 kernel/sched/grid/qos.c create mode 100644 kernel/sched/grid/stat.c -- 2.34.1

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[PATCH OLK-6.6 0/2] lib/clear_user: ensure loop in __arch_clear_user cache-aligned v2
by Yang Yingliang 02 Jan '24

02 Jan '24

We must ensure that the following four instructions are cache-aligned. Otherwise, it will cause problems with the performance of libMicro pread. 1: # uao_user_alternative 9f, str, sttr, xzr, x0, 8 str xzr, [x0], #8 nop subs x1, x1, #8 b.pl 1b with this patch: prc thr usecs/call samples errors cnt/samp size pread_z100 1 1 5.88400 807 0 1 102400 The result of pread can range from 5 to 9 depending on the alignment performance of this function. Cheng Jian (1): lib/clear_user: ensure loop in __arch_clear_user cache-aligned v2 Yang Yingliang (1): config: enable CONFIG_CLEAR_USER_WORKAROUND by default arch/arm64/Kconfig | 7 +++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/lib/clear_user.S | 3 +++ 3 files changed, 11 insertions(+) -- 2.25.1

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[PATCH OLK-6.6 0/2] add memmap interface to reserved memory
by Ze Zuo 02 Jan '24

02 Jan '24

Add support for memmap kernel parameters for ARM64. The three below modes are supported: memmap=exactmap Enable setting of an exact memory map, as specified by the user. memmap=nn[KMG]@ss[KMG] Force usage of a specific region of memory. memmap=nn[KMG]$ss[KMG] Region of memory to be reserved is from ss to ss+nn, the region must be in the range of existed memory, otherwise will be ignored. Please note that the above functions are for debugging purposes only. ChangeLog: - Some minor changes about description and code, no functional changes Ze Zuo (2): arm64: Add support for memmap kernel parameters arm64: Request resources for reserved memory via memmap .../admin-guide/kernel-parameters.txt | 14 ++- arch/arm64/kernel/setup.c | 32 +++++ arch/arm64/mm/init.c | 112 ++++++++++++++++++ arch/arm64/mm/internal.h | 12 ++ 4 files changed, 167 insertions(+), 3 deletions(-) create mode 100644 arch/arm64/mm/internal.h -- 2.25.1

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[PATCH OpenEuler-1.0-LTS 0/3] Fix bugs from LTS patches
by Zhang Zekun 02 Jan '24

02 Jan '24

Bugfix from linux stable patches Mukesh Ojha (2): devcoredump : Serialize devcd_del work devcoredump: Send uevent once devcd is ready Saravana Kannan (1): driver core: Release all resources during unbind before updating device links drivers/base/dd.c | 4 +- drivers/base/devcoredump.c | 86 +++++++++++++++++++++++++++++++++++++- 2 files changed, 86 insertions(+), 4 deletions(-) -- 2.17.1

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[PATCH OLK-6.6 0/2] To offer an option for turn off spectre-v2
by Yi Yang 02 Jan '24

02 Jan '24

option for turn off spectre-v2 Cui GaoSheng (1): ARM: use ldr_l to replace ldr instruction for the symbol jump GONG, Ruiqi (1): ARM: spectre-v2: turn off the mitigation via boot cmdline param arch/arm/include/asm/system_misc.h | 1 + arch/arm/mm/proc-v7-bugs.c | 18 ++++++++++++++++++ arch/arm/mm/proc-v7.S | 9 +++++++++ 3 files changed, 28 insertions(+) -- 2.25.1

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[PATCH OLK-6.6 v3 0/3] blk-mq: make fair tag sharing configurable
by Yu Kuai 02 Jan '24

02 Jan '24

Changes in v3: - add lockdep_assert_held() in queue_update_fair_tag_sharing() - use tag_set->flags instead of new field; Changes in v2: - use a local variable for 'q->tag_set->disable_fair_tag_sharing' before iteration in queue_update_fair_tag_sharing(); - only update fair tag sharing if blk_mq_realloc_tag_set_tags() succeed in __blk_mq_update_nr_hw_queues(); Yu Kuai (3): blk-mq: add apis to disable fair tag sharing scsi: core: make fair tag sharing configurable via sysfs scsi_lib: disable fair tag sharing by default if total tags is less than 128 block/blk-mq-debugfs.c | 1 + block/blk-mq.c | 38 +++++++++++++++++++++++++++++++++++++- block/blk-mq.h | 3 ++- drivers/scsi/scsi_lib.c | 3 +++ drivers/scsi/scsi_sysfs.c | 39 +++++++++++++++++++++++++++++++++++++++ include/linux/blk-mq.h | 2 ++ 6 files changed, 84 insertions(+), 2 deletions(-) -- 2.39.2

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[PATCH OLK-6.6 0/1] kabi: reserve space for cpu cgroup and
by Xiang Yang 02 Jan '24

02 Jan '24

Lu Jialin (1): kabi: reserve space for cpu cgroup and cpuset cgroup related structures kernel/cgroup/cpuset.c | 6 ++++++ kernel/sched/sched.h | 5 +++++ 2 files changed, 11 insertions(+) -- 2.34.1

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[PATCH openEuler-1.0-LTS] appletalk: Fix Use-After-Free in atalk_ioctl
by Dong Chenchen 02 Jan '24

02 Jan '24

From: Hyunwoo Kim <v4bel(a)theori.io> stable inclusion from stable-v4.19.302 commit 580ff9f59ab6537d8ce1d0d9f012cf970553ef3d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8RXOY CVE: CVE-2023-51781 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 189ff16722ee36ced4d2a2469d4ab65a8fee4198 ] Because atalk_ioctl() accesses sk->sk_receive_queue without holding a sk->sk_receive_queue.lock, it can cause a race with atalk_recvmsg(). A use-after-free for skb occurs with the following flow. ``` atalk_ioctl() -> skb_peek() atalk_recvmsg() -> skb_recv_datagram() -> skb_free_datagram() ``` Add sk->sk_receive_queue.lock to atalk_ioctl() to fix this issue. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Hyunwoo Kim <v4bel(a)theori.io> Link: https://lore.kernel.org/r/20231213041056.GA519680@v4bel-B760M-AORUS-ELITE-AX Signed-off-by: Paolo Abeni <pabeni(a)redhat.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- net/appletalk/ddp.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index 2880ac470379..55c99ec018d7 100644 --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1799,15 +1799,14 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) break; } case TIOCINQ: { - /* - * These two are safe on a single CPU system as only - * user tasks fiddle here - */ - struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); + struct sk_buff *skb; long amount = 0; + spin_lock_irq(&sk->sk_receive_queue.lock); + skb = skb_peek(&sk->sk_receive_queue); if (skb) amount = skb->len - sizeof(struct ddpehdr); + spin_unlock_irq(&sk->sk_receive_queue.lock); rc = put_user(amount, (int __user *)argp); break; } -- 2.25.1

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[PATCH OLK-5.10] appletalk: Fix Use-After-Free in atalk_ioctl
by Dong Chenchen 02 Jan '24

02 Jan '24

From: Hyunwoo Kim <v4bel(a)theori.io> stable inclusion from stable-v5.10.204 commit a232eb81c7cb5d4dbd325d4611ed029b7fa07596 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8RXOY CVE: CVE-2023-51781 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 189ff16722ee36ced4d2a2469d4ab65a8fee4198 ] Because atalk_ioctl() accesses sk->sk_receive_queue without holding a sk->sk_receive_queue.lock, it can cause a race with atalk_recvmsg(). A use-after-free for skb occurs with the following flow. ``` atalk_ioctl() -> skb_peek() atalk_recvmsg() -> skb_recv_datagram() -> skb_free_datagram() ``` Add sk->sk_receive_queue.lock to atalk_ioctl() to fix this issue. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Hyunwoo Kim <v4bel(a)theori.io> Link: https://lore.kernel.org/r/20231213041056.GA519680@v4bel-B760M-AORUS-ELITE-AX Signed-off-by: Paolo Abeni <pabeni(a)redhat.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- net/appletalk/ddp.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index c94b212d8e7c..46adb8cefccf 100644 --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1811,15 +1811,14 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) break; } case TIOCINQ: { - /* - * These two are safe on a single CPU system as only - * user tasks fiddle here - */ - struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); + struct sk_buff *skb; long amount = 0; + spin_lock_irq(&sk->sk_receive_queue.lock); + skb = skb_peek(&sk->sk_receive_queue); if (skb) amount = skb->len - sizeof(struct ddpehdr); + spin_unlock_irq(&sk->sk_receive_queue.lock); rc = put_user(amount, (int __user *)argp); break; } -- 2.25.1

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