November 2023 - Linux-stable-mirror

[PATCH 1/1] iommu/vt-d: Add MTL to quirk list to skip TE disabling

by Lu Baolu

From: "Abdul Halim, Mohd Syazwan" <mohd.syazwan.abdul.halim(a)intel.com> The VT-d spec requires (10.4.4 Global Command Register, TE field) that: Hardware implementations supporting DMA draining must drain any in-flight DMA read/write requests queued within the Root-Complex before completing the translation enable command and reflecting the status of the command through the TES field in the Global Status register. Unfortunately, some integrated graphic devices fail to do so after some kind of power state transition. As the result, the system might stuck in iommu_disable_translation(), waiting for the completion of TE transition. Add MTL to the quirk list for those devices and skips TE disabling if the qurik hits. Fixes: b1012ca8dc4f ("iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu") Cc: stable(a)vger.kernel.org Signed-off-by: Abdul Halim, Mohd Syazwan <mohd.syazwan.abdul.halim(a)intel.com> Signed-off-by: Lu Baolu <baolu.lu(a)linux.intel.com> --- drivers/iommu/intel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 061df1b68ff7..22cadcefadaa 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5080,7 +5080,7 @@ static void quirk_igfx_skip_te_disable(struct pci_dev *dev) ver = (dev->device >> 8) & 0xff; if (ver != 0x45 && ver != 0x46 && ver != 0x4c && ver != 0x4e && ver != 0x8a && ver != 0x98 && - ver != 0x9a && ver != 0xa7) + ver != 0x9a && ver != 0xa7 && ver != 0x7d) return; if (risky_device(dev)) -- 2.34.1

1 year, 3 months

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stable-rc/linux-5.10.y baseline: 113 runs, 2 regressions (v5.10.200-192-g550b7e1fee20)

by kernelci.org bot

stable-rc/linux-5.10.y baseline: 113 runs, 2 regressions (v5.10.200-192-g550b7e1fee20) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ sun50i-h6-pine-h64 | arm64 | lab-clabbe | gcc-10 | defconfig | 1 sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/job/stable-rc/branch/linux-5.10.y/kernel/v5.10.20… Test: baseline Tree: stable-rc Branch: linux-5.10.y Describe: v5.10.200-192-g550b7e1fee20 URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git SHA: 550b7e1fee20e8840f9c1028c89dd3fc9c959fff Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ sun50i-h6-pine-h64 | arm64 | lab-clabbe | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/6555480a94a83a7be97e4aaa Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-192-g550b7e1… HTML log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-192-g550b7e1… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/6555480a94a83a7be97e4ab3 failing since 35 days (last pass: v5.10.176-224-g10e9fd53dc59, first fail: v5.10.198) 2023-11-15T22:36:48.806844 <8>[ 16.949774] <LAVA_SIGNAL_ENDRUN 0_dmesg 444163_1.5.2.4.1> 2023-11-15T22:36:48.911795 / # # 2023-11-15T22:36:49.013398 export SHELL=/bin/sh 2023-11-15T22:36:49.014044 # 2023-11-15T22:36:49.114991 / # export SHELL=/bin/sh. /lava-444163/environment 2023-11-15T22:36:49.115644 2023-11-15T22:36:49.216642 / # . /lava-444163/environment/lava-444163/bin/lava-test-runner /lava-444163/1 2023-11-15T22:36:49.217545 2023-11-15T22:36:49.222090 / # /lava-444163/bin/lava-test-runner /lava-444163/1 2023-11-15T22:36:49.289300 + export 'TESTRUN_ID=1_bootrr' ... (11 line(s) more) platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/6555481c94a83a7be97e4b29 Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-192-g550b7e1… HTML log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-192-g550b7e1… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/6555481c94a83a7be97e4b32 failing since 35 days (last pass: v5.10.176-224-g10e9fd53dc59, first fail: v5.10.198) 2023-11-15T22:43:32.479712 / # # 2023-11-15T22:43:32.582109 export SHELL=/bin/sh 2023-11-15T22:43:32.582880 # 2023-11-15T22:43:32.684259 / # export SHELL=/bin/sh. /lava-12012273/environment 2023-11-15T22:43:32.685033 2023-11-15T22:43:32.786554 / # . /lava-12012273/environment/lava-12012273/bin/lava-test-runner /lava-12012273/1 2023-11-15T22:43:32.787714 2023-11-15T22:43:32.802870 / # /lava-12012273/bin/lava-test-runner /lava-12012273/1 2023-11-15T22:43:32.861501 + export 'TESTRUN_ID=1_bootrr' 2023-11-15T22:43:32.861695 + cd /lava-1201227<8>[ 18.183590] <LAVA_SIGNAL_STARTRUN 1_bootrr 12012273_1.5.2.4.5> ... (10 line(s) more)

1 year, 3 months

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stable-rc/linux-5.10.y baseline: 115 runs, 3 regressions (v5.10.200-208-g56d7b7f72001)

by kernelci.org bot

stable-rc/linux-5.10.y baseline: 115 runs, 3 regressions (v5.10.200-208-g56d7b7f72001) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ juno-uboot | arm64 | lab-broonie | gcc-10 | defconfig | 1 sun50i-h6-pine-h64 | arm64 | lab-clabbe | gcc-10 | defconfig | 1 sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/job/stable-rc/branch/linux-5.10.y/kernel/v5.10.20… Test: baseline Tree: stable-rc Branch: linux-5.10.y Describe: v5.10.200-208-g56d7b7f72001 URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git SHA: 56d7b7f72001d6cdd7f5e67809115743b1ad99be Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ juno-uboot | arm64 | lab-broonie | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/6555285d31cf337c077e4ab8 Results: 50 PASS, 11 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… HTML log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/6555285d31cf337c077e4af6 failing since 0 day (last pass: v5.10.200, first fail: v5.10.200-207-gc3a1f056425f) 2023-11-15T20:21:23.118156 / # # 2023-11-15T20:21:23.221120 export SHELL=/bin/sh 2023-11-15T20:21:23.221897 # 2023-11-15T20:21:23.323848 / # export SHELL=/bin/sh. /lava-244598/environment 2023-11-15T20:21:23.324614 2023-11-15T20:21:23.426544 / # . /lava-244598/environment/lava-244598/bin/lava-test-runner /lava-244598/1 2023-11-15T20:21:23.427833 2023-11-15T20:21:23.441056 / # /lava-244598/bin/lava-test-runner /lava-244598/1 2023-11-15T20:21:23.501951 + export 'TESTRUN_ID=1_bootrr' 2023-11-15T20:21:23.502521 + cd /lava-244598/1/tests/1_bootrr ... (10 line(s) more) platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ sun50i-h6-pine-h64 | arm64 | lab-clabbe | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/655527af34462079727e4a95 Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… HTML log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/655527af34462079727e4a9e failing since 35 days (last pass: v5.10.176-224-g10e9fd53dc59, first fail: v5.10.198) 2023-11-15T20:18:46.166427 <8>[ 16.957289] <LAVA_SIGNAL_ENDRUN 0_dmesg 444147_1.5.2.4.1> 2023-11-15T20:18:46.271469 / # # 2023-11-15T20:18:46.373155 export SHELL=/bin/sh 2023-11-15T20:18:46.373868 # 2023-11-15T20:18:46.474865 / # export SHELL=/bin/sh. /lava-444147/environment 2023-11-15T20:18:46.475461 2023-11-15T20:18:46.576484 / # . /lava-444147/environment/lava-444147/bin/lava-test-runner /lava-444147/1 2023-11-15T20:18:46.577498 2023-11-15T20:18:46.581833 / # /lava-444147/bin/lava-test-runner /lava-444147/1 2023-11-15T20:18:46.648895 + export 'TESTRUN_ID=1_bootrr' ... (11 line(s) more) platform | arch | lab | compiler | defconfig | regressions -------------------+-------+---------------+----------+-----------+------------ sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/655527d4ab463dbd6c7e4aac Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… HTML log: https://storage.kernelci.org//stable-rc/linux-5.10.y/v5.10.200-208-g56d7b7f… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/655527d4ab463dbd6c7e4ab5 failing since 35 days (last pass: v5.10.176-224-g10e9fd53dc59, first fail: v5.10.198) 2023-11-15T20:25:46.892297 / # # 2023-11-15T20:25:46.992875 export SHELL=/bin/sh 2023-11-15T20:25:46.993074 # 2023-11-15T20:25:47.093565 / # export SHELL=/bin/sh. /lava-12011467/environment 2023-11-15T20:25:47.093756 2023-11-15T20:25:47.194261 / # . /lava-12011467/environment/lava-12011467/bin/lava-test-runner /lava-12011467/1 2023-11-15T20:25:47.194559 2023-11-15T20:25:47.205930 / # /lava-12011467/bin/lava-test-runner /lava-12011467/1 2023-11-15T20:25:47.265856 + export 'TESTRUN_ID=1_bootrr' 2023-11-15T20:25:47.266016 + cd /lava-1201146<8>[ 18.220992] <LAVA_SIGNAL_STARTRUN 1_bootrr 12011467_1.5.2.4.5> ... (10 line(s) more)

1 year, 3 months

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[PATCH net,v4, 3/3] hv_netvsc: Mark VF as slave before exposing it to user-mode

by Haiyang Zhang

From: Long Li <longli(a)microsoft.com> When a VF is being exposed form the kernel, it should be marked as "slave" before exposing to the user-mode. The VF is not usable without netvsc running as master. The user-mode should never see a VF without the "slave" flag. This commit moves the code of setting the slave flag to the time before VF is exposed to user-mode. Cc: stable(a)vger.kernel.org Fixes: 0c195567a8f6 ("netvsc: transparent VF management") Signed-off-by: Long Li <longli(a)microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz(a)microsoft.com> --- v4: Add comments in get_netvsc_byslot() explaining the need to check dev_addr v2: Use a new function to handle NETDEV_POST_INIT. --- drivers/net/hyperv/netvsc_drv.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 1d1491da303b..52dbf1de7347 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2206,9 +2206,6 @@ static int netvsc_vf_join(struct net_device *vf_netdev, goto upper_link_failed; } - /* set slave flag before open to prevent IPv6 addrconf */ - vf_netdev->flags |= IFF_SLAVE; - schedule_delayed_work(&ndev_ctx->vf_takeover, VF_TAKEOVER_INT); call_netdevice_notifiers(NETDEV_JOIN, vf_netdev); @@ -2315,16 +2312,18 @@ static struct net_device *get_netvsc_byslot(const struct net_device *vf_netdev) } - /* Fallback path to check synthetic vf with - * help of mac addr + /* Fallback path to check synthetic vf with help of mac addr. + * Because this function can be called before vf_netdev is + * initialized (NETDEV_POST_INIT) when its perm_addr has not been copied + * from dev_addr, also try to match to its dev_addr. + * Note: On Hyper-V and Azure, it's not possible to set a MAC address + * on a VF that matches to the MAC of a unrelated NETVSC device. */ list_for_each_entry(ndev_ctx, &netvsc_dev_list, list) { ndev = hv_get_drvdata(ndev_ctx->device_ctx); - if (ether_addr_equal(vf_netdev->perm_addr, ndev->perm_addr)) { - netdev_notice(vf_netdev, - "falling back to mac addr based matching\n"); + if (ether_addr_equal(vf_netdev->perm_addr, ndev->perm_addr) || + ether_addr_equal(vf_netdev->dev_addr, ndev->perm_addr)) return ndev; - } } netdev_notice(vf_netdev, @@ -2332,6 +2331,19 @@ static struct net_device *get_netvsc_byslot(const struct net_device *vf_netdev) return NULL; } +static int netvsc_prepare_slave(struct net_device *vf_netdev) +{ + struct net_device *ndev; + + ndev = get_netvsc_byslot(vf_netdev); + if (!ndev) + return NOTIFY_DONE; + + /* set slave flag before open to prevent IPv6 addrconf */ + vf_netdev->flags |= IFF_SLAVE; + return NOTIFY_DONE; +} + static int netvsc_register_vf(struct net_device *vf_netdev) { struct net_device_context *net_device_ctx; @@ -2758,6 +2770,8 @@ static int netvsc_netdev_event(struct notifier_block *this, return NOTIFY_DONE; switch (event) { + case NETDEV_POST_INIT: + return netvsc_prepare_slave(event_dev); case NETDEV_REGISTER: return netvsc_register_vf(event_dev); case NETDEV_UNREGISTER: -- 2.25.1

1 year, 3 months

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[merged mm-hotfixes-stable] parisc-fix-mmap_base-calculation-when-stack-grows-upwards.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: parisc: fix mmap_base calculation when stack grows upwards has been removed from the -mm tree. Its filename was parisc-fix-mmap_base-calculation-when-stack-grows-upwards.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Helge Deller <deller(a)gmx.de> Subject: parisc: fix mmap_base calculation when stack grows upwards Date: Mon, 13 Nov 2023 11:12:57 +0100 Matoro reported various userspace crashes on the parisc platform with kernel 6.6 and bisected it to commit 3033cd430768 ("parisc: Use generic mmap top-down layout and brk randomization"). That commit switched parisc to use the common infrastructure to calculate mmap_base, but missed that the mmap_base() function takes care for architectures where the stack grows downwards only. Fix the mmap_base() calculation to include the stack-grows-upwards case and thus fix the userspace crashes on parisc. Link: https://lkml.kernel.org/r/ZVH2qeS1bG7/1J/l@p100 Fixes: 3033cd430768 ("parisc: Use generic mmap top-down layout and brk randomization") Signed-off-by: Helge Deller <deller(a)gmx.de> Reported-by: matoro <matoro_mailinglist_kernel(a)matoro.tk> Tested-by: matoro <matoro_mailinglist_kernel(a)matoro.tk> Cc: <stable(a)vger.kernel.org> [6.6+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/parisc/Kconfig | 6 +++--- arch/parisc/include/asm/elf.h | 10 +--------- arch/parisc/include/asm/processor.h | 2 ++ arch/parisc/kernel/sys_parisc.c | 2 +- mm/util.c | 10 ++++++++++ 5 files changed, 17 insertions(+), 13 deletions(-) --- a/arch/parisc/include/asm/elf.h~parisc-fix-mmap_base-calculation-when-stack-grows-upwards +++ a/arch/parisc/include/asm/elf.h @@ -349,15 +349,7 @@ struct pt_regs; /* forward declaration.. #define ELF_HWCAP 0 -/* Masks for stack and mmap randomization */ -#define BRK_RND_MASK (is_32bit_task() ? 0x07ffUL : 0x3ffffUL) -#define MMAP_RND_MASK (is_32bit_task() ? 0x1fffUL : 0x3ffffUL) -#define STACK_RND_MASK MMAP_RND_MASK - -struct mm_struct; -extern unsigned long arch_randomize_brk(struct mm_struct *); -#define arch_randomize_brk arch_randomize_brk - +#define STACK_RND_MASK 0x7ff /* 8MB of VA */ #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 struct linux_binprm; --- a/arch/parisc/include/asm/processor.h~parisc-fix-mmap_base-calculation-when-stack-grows-upwards +++ a/arch/parisc/include/asm/processor.h @@ -47,6 +47,8 @@ #ifndef __ASSEMBLY__ +struct rlimit; +unsigned long mmap_upper_limit(struct rlimit *rlim_stack); unsigned long calc_max_stack_size(unsigned long stack_max); /* --- a/arch/parisc/Kconfig~parisc-fix-mmap_base-calculation-when-stack-grows-upwards +++ a/arch/parisc/Kconfig @@ -140,11 +140,11 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN default 8 config ARCH_MMAP_RND_BITS_MAX - default 24 if 64BIT - default 17 + default 18 if 64BIT + default 13 config ARCH_MMAP_RND_COMPAT_BITS_MAX - default 17 + default 13 # unless you want to implement ACPI on PA-RISC ... ;-) config PM --- a/arch/parisc/kernel/sys_parisc.c~parisc-fix-mmap_base-calculation-when-stack-grows-upwards +++ a/arch/parisc/kernel/sys_parisc.c @@ -77,7 +77,7 @@ unsigned long calc_max_stack_size(unsign * indicating that "current" should be used instead of a passed-in * value from the exec bprm as done with arch_pick_mmap_layout(). */ -static unsigned long mmap_upper_limit(struct rlimit *rlim_stack) +unsigned long mmap_upper_limit(struct rlimit *rlim_stack) { unsigned long stack_base; --- a/mm/util.c~parisc-fix-mmap_base-calculation-when-stack-grows-upwards +++ a/mm/util.c @@ -414,6 +414,15 @@ static int mmap_is_legacy(struct rlimit static unsigned long mmap_base(unsigned long rnd, struct rlimit *rlim_stack) { +#ifdef CONFIG_STACK_GROWSUP + /* + * For an upwards growing stack the calculation is much simpler. + * Memory for the maximum stack size is reserved at the top of the + * task. mmap_base starts directly below the stack and grows + * downwards. + */ + return PAGE_ALIGN_DOWN(mmap_upper_limit(rlim_stack) - rnd); +#else unsigned long gap = rlim_stack->rlim_cur; unsigned long pad = stack_guard_gap; @@ -431,6 +440,7 @@ static unsigned long mmap_base(unsigned gap = MAX_GAP; return PAGE_ALIGN(STACK_TOP - gap - rnd); +#endif } void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack) _ Patches currently in -mm which might be from deller(a)gmx.de are

1 year, 3 months

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[merged mm-hotfixes-stable] mm-damon-corec-avoid-unintentional-filtering-out-of-schemes.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/damon/core.c: avoid unintentional filtering out of schemes has been removed from the -mm tree. Its filename was mm-damon-corec-avoid-unintentional-filtering-out-of-schemes.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Hyeongtak Ji <hyeongtak.ji(a)sk.com> Subject: mm/damon/core.c: avoid unintentional filtering out of schemes Date: Fri, 10 Nov 2023 14:37:09 +0900 The function '__damos_filter_out()' causes DAMON to always filter out schemes whose filter type is anon or memcg if its matching value is set to false. This commit addresses the issue by ensuring that '__damos_filter_out()' no longer applies to filters whose type is 'anon' or 'memcg'. Link: https://lkml.kernel.org/r/1699594629-3816-1-git-send-email-hyeongtak.ji@gma… Fixes: ab9bda001b681 ("mm/damon/core: introduce address range type damos filter") Signed-off-by: Hyeongtak Ji <hyeongtak.ji(a)sk.com> Reviewed-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/damon/core.c~mm-damon-corec-avoid-unintentional-filtering-out-of-schemes +++ a/mm/damon/core.c @@ -924,7 +924,7 @@ static bool __damos_filter_out(struct da matched = true; break; default: - break; + return false; } return matched == filter->matching; _ Patches currently in -mm which might be from hyeongtak.ji(a)sk.com are

1 year, 3 months

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[merged mm-hotfixes-stable] cgroups-warning-for-metadata-allocation-with-gfp_nofail-was-re-folio_alloc_buffers-doing-allocations-order-1-with-gfp_nofail.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors has been removed from the -mm tree. Its filename was cgroups-warning-for-metadata-allocation-with-gfp_nofail-was-re-folio_alloc_buffers-doing-allocations-order-1-with-gfp_nofail.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Roman Gushchin <roman.gushchin(a)linux.dev> Subject: mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors Date: Tue, 7 Nov 2023 09:18:02 -0800 Objcg vectors attached to slab pages to store slab object ownership information are allocated using gfp flags for the original slab allocation. Depending on slab page order and the size of slab objects, objcg vector can take several pages. If the original allocation was done with the __GFP_NOFAIL flag, it triggered a warning in the page allocation code. Indeed, order > 1 pages should not been allocated with the __GFP_NOFAIL flag. Fix this by simply dropping the __GFP_NOFAIL flag when allocating the objcg vector. It effectively allows to skip the accounting of a single slab object under a heavy memory pressure. An alternative would be to implement the mechanism to fallback to order-0 allocations for accounting metadata, which is also not perfect because it will increase performance penalty and memory footprint of the kernel memory accounting under memory pressure. Link: https://lkml.kernel.org/r/ZUp8ZFGxwmCx4ZFr@P9FQF9L96D.corp.robot.car Signed-off-by: Roman Gushchin <roman.gushchin(a)linux.dev> Reported-by: Christoph Lameter <cl(a)linux.com> Closes: https://lkml.kernel.org/r/6b42243e-f197-600a-5d22-56bd728a5ad8@gentwo.org Acked-by: Shakeel Butt <shakeelb(a)google.com> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memcontrol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/memcontrol.c~cgroups-warning-for-metadata-allocation-with-gfp_nofail-was-re-folio_alloc_buffers-doing-allocations-order-1-with-gfp_nofail +++ a/mm/memcontrol.c @@ -2936,7 +2936,8 @@ void mem_cgroup_commit_charge(struct fol * Moreover, it should not come from DMA buffer and is not readily * reclaimable. So those GFP bits should be masked off. */ -#define OBJCGS_CLEAR_MASK (__GFP_DMA | __GFP_RECLAIMABLE | __GFP_ACCOUNT) +#define OBJCGS_CLEAR_MASK (__GFP_DMA | __GFP_RECLAIMABLE | \ + __GFP_ACCOUNT | __GFP_NOFAIL) /* * mod_objcg_mlstate() may be called with irq enabled, so _ Patches currently in -mm which might be from roman.gushchin(a)linux.dev are

1 year, 3 months

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[merged mm-hotfixes-stable] mm-damon-sysfs-schemes-handle-tried-region-directory-allocation-failure.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/damon/sysfs-schemes: handle tried region directory allocation failure has been removed from the -mm tree. Its filename was mm-damon-sysfs-schemes-handle-tried-region-directory-allocation-failure.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/sysfs-schemes: handle tried region directory allocation failure Date: Mon, 6 Nov 2023 23:34:08 +0000 DAMON sysfs interface's before_damos_apply callback (damon_sysfs_before_damos_apply()), which creates the DAMOS tried regions for each DAMOS action applied region, is not handling the allocation failure for the sysfs directory data. As a result, NULL pointer derefeence is possible. Fix it by handling the case. Link: https://lkml.kernel.org/r/20231106233408.51159-4-sj@kernel.org Fixes: f1d13cacabe1 ("mm/damon/sysfs: implement DAMOS tried regions update command") Signed-off-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> [6.2+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/sysfs-schemes.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-handle-tried-region-directory-allocation-failure +++ a/mm/damon/sysfs-schemes.c @@ -1826,6 +1826,8 @@ static int damon_sysfs_before_damos_appl return 0; region = damon_sysfs_scheme_region_alloc(r); + if (!region) + return 0; list_add_tail(&region->list, &sysfs_regions->regions_list); sysfs_regions->nr_regions++; if (kobject_init_and_add(&region->kobj, _ Patches currently in -mm which might be from sj(a)kernel.org are

1 year, 3 months

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[merged mm-hotfixes-stable] mm-damon-sysfs-schemes-handle-tried-regions-sysfs-directory-allocation-failure.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/damon/sysfs-schemes: handle tried regions sysfs directory allocation failure has been removed from the -mm tree. Its filename was mm-damon-sysfs-schemes-handle-tried-regions-sysfs-directory-allocation-failure.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/sysfs-schemes: handle tried regions sysfs directory allocation failure Date: Mon, 6 Nov 2023 23:34:07 +0000 DAMOS tried regions sysfs directory allocation function (damon_sysfs_scheme_regions_alloc()) is not handling the memory allocation failure. In the case, the code will dereference NULL pointer. Handle the failure to avoid such invalid access. Link: https://lkml.kernel.org/r/20231106233408.51159-3-sj@kernel.org Fixes: 9277d0367ba1 ("mm/damon/sysfs-schemes: implement scheme region directory") Signed-off-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> [6.2+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/sysfs-schemes.c | 3 +++ 1 file changed, 3 insertions(+) --- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-handle-tried-regions-sysfs-directory-allocation-failure +++ a/mm/damon/sysfs-schemes.c @@ -162,6 +162,9 @@ damon_sysfs_scheme_regions_alloc(void) struct damon_sysfs_scheme_regions *regions = kmalloc(sizeof(*regions), GFP_KERNEL); + if (!regions) + return NULL; + regions->kobj = (struct kobject){}; INIT_LIST_HEAD(&regions->regions_list); regions->nr_regions = 0; _ Patches currently in -mm which might be from sj(a)kernel.org are

1 year, 3 months

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[merged mm-hotfixes-stable] mm-damon-sysfs-check-error-from-damon_sysfs_update_target.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/damon/sysfs: check error from damon_sysfs_update_target() has been removed from the -mm tree. Its filename was mm-damon-sysfs-check-error-from-damon_sysfs_update_target.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/sysfs: check error from damon_sysfs_update_target() Date: Mon, 6 Nov 2023 23:34:06 +0000 Patch series "mm/damon/sysfs: fix unhandled return values". Some of DAMON sysfs interface code is not handling return values from some functions. As a result, confusing user input handling or NULL-dereference is possible. Check those properly. This patch (of 3): damon_sysfs_update_target() returns error code for failures, but its caller, damon_sysfs_set_targets() is ignoring that. The update function seems making no critical change in case of such failures, but the behavior will look like DAMON sysfs is silently ignoring or only partially accepting the user input. Fix it. Link: https://lkml.kernel.org/r/20231106233408.51159-1-sj@kernel.org Link: https://lkml.kernel.org/r/20231106233408.51159-2-sj@kernel.org Fixes: 19467a950b49 ("mm/damon/sysfs: remove requested targets when online-commit inputs") Signed-off-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> [5.19+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/sysfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/mm/damon/sysfs.c~mm-damon-sysfs-check-error-from-damon_sysfs_update_target +++ a/mm/damon/sysfs.c @@ -1203,8 +1203,10 @@ static int damon_sysfs_set_targets(struc damon_for_each_target_safe(t, next, ctx) { if (i < sysfs_targets->nr) { - damon_sysfs_update_target(t, ctx, + err = damon_sysfs_update_target(t, ctx, sysfs_targets->targets_arr[i]); + if (err) + return err; } else { if (damon_target_has_pid(ctx)) put_pid(t->pid); _ Patches currently in -mm which might be from sj(a)kernel.org are

1 year, 3 months

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