April 2024 - Kernel - mailweb.openeuler.org

[PATCH openEuler-22.03-LTS 0/7] fixe CVE-2023-52498
by Yang Yingliang 23 Apr '24

23 Apr '24

Fix CVE-2023-52498. Bjorn Helgaas (1): PM: sleep: Use dev_printk() when possible Li zeming (1): PM: core: Remove unnecessary (void *) conversions Rafael J. Wysocki (5): async: Split async_schedule_node_domain() async: Introduce async_schedule_dev_nocall() PM: sleep: Avoid calling put_device() under dpm_list_mtx PM: sleep: Fix possible deadlocks in core system-wide PM code PM: sleep: Fix error handling in dpm_prepare() drivers/base/power/main.c | 251 ++++++++++++++++++++------------------ include/linux/async.h | 2 + kernel/async.c | 85 +++++++++---- 3 files changed, 200 insertions(+), 138 deletions(-) -- 2.25.1

2 8

[PATCH OLK-5.10 0/7] fix CVE-2023-52498
by Yang Yingliang 23 Apr '24

23 Apr '24

Fix CVE-2023-52498. Bjorn Helgaas (1): PM: sleep: Use dev_printk() when possible Li zeming (1): PM: core: Remove unnecessary (void *) conversions Rafael J. Wysocki (5): async: Split async_schedule_node_domain() async: Introduce async_schedule_dev_nocall() PM: sleep: Avoid calling put_device() under dpm_list_mtx PM: sleep: Fix possible deadlocks in core system-wide PM code PM: sleep: Fix error handling in dpm_prepare() drivers/base/power/main.c | 251 ++++++++++++++++++++------------------ include/linux/async.h | 2 + kernel/async.c | 85 +++++++++---- 3 files changed, 200 insertions(+), 138 deletions(-) -- 2.25.1

2 8

[PATCH OLK-6.6 v2] openeuler_defconfig: update the config of the minimum set
by Peng Zhang 23 Apr '24

23 Apr '24

From: ZhangPeng <zhangpeng362(a)huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT --------------------------- Update the config of the minimum set list. Suggested-by: Dukaitian <dukaitian(a)huawei.com> Signed-off-by: ZhangPeng <zhangpeng362(a)huawei.com> --- Changelog: v1->v2: - Remove unnecessary config CONFIG_RESET_CONTROLLER update arch/arm64/configs/openeuler_defconfig | 16 ++++++++-------- arch/x86/configs/openeuler_defconfig | 8 ++++---- 2 files changed, 12 insertions(+), 12 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9a6ef6175717..e4056d13725a 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -1769,7 +1769,7 @@ CONFIG_NET_SCH_MQPRIO=m CONFIG_NET_SCH_CHOKE=m CONFIG_NET_SCH_QFQ=m CONFIG_NET_SCH_CODEL=m -CONFIG_NET_SCH_FQ_CODEL=m +CONFIG_NET_SCH_FQ_CODEL=y # CONFIG_NET_SCH_CAKE is not set CONFIG_NET_SCH_FQ=m CONFIG_NET_SCH_HHF=m @@ -2466,7 +2466,7 @@ CONFIG_ALTERA_STAPL=m CONFIG_MISC_RTSX_PCI=m CONFIG_MISC_RTSX_USB=m CONFIG_UACCE=m -# CONFIG_PVPANIC is not set +CONFIG_PVPANIC=y # CONFIG_GP_PCI1XXXX is not set # end of Misc devices @@ -5280,7 +5280,7 @@ CONFIG_AUXDISPLAY=y # CONFIG_CHARLCD_BL_OFF is not set # CONFIG_CHARLCD_BL_ON is not set CONFIG_CHARLCD_BL_FLASH=y -CONFIG_DRM=y +CONFIG_DRM=m # CONFIG_DRM_DEBUG_MM is not set CONFIG_DRM_KMS_HELPER=y # CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set @@ -6198,7 +6198,7 @@ CONFIG_RTC_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" -# CONFIG_RTC_SYSTOHC is not set +CONFIG_RTC_SYSTOHC=y # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y @@ -6425,7 +6425,7 @@ CONFIG_VIRTIO_PCI_LEGACY=y # CONFIG_VIRTIO_VDPA is not set # CONFIG_VIRTIO_PMEM is not set CONFIG_VIRTIO_BALLOON=m -# CONFIG_VIRTIO_MEM is not set +CONFIG_VIRTIO_MEM=m CONFIG_VIRTIO_INPUT=m CONFIG_VIRTIO_MMIO=m # CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set @@ -6693,7 +6693,7 @@ CONFIG_EXTCON_GPIO=m # CONFIG_EXTCON_USBC_TUSB320 is not set # CONFIG_MEMORY is not set # CONFIG_IIO is not set -# CONFIG_NTB is not set +CONFIG_NTB=m CONFIG_PWM=y CONFIG_PWM_SYSFS=y # CONFIG_PWM_DEBUG is not set @@ -6797,14 +6797,14 @@ CONFIG_ARM_CCN=y # CONFIG_ARM_CMN is not set CONFIG_ARM_PMU=y CONFIG_ARM_PMU_ACPI=y -CONFIG_ARM_SMMU_V3_PMU=y +CONFIG_ARM_SMMU_V3_PMU=m CONFIG_ARM_PMUV3=y # CONFIG_ARM_DSU_PMU is not set CONFIG_QCOM_L2_PMU=y CONFIG_QCOM_L3_PMU=y CONFIG_THUNDERX2_PMU=m CONFIG_XGENE_PMU=y -CONFIG_ARM_SPE_PMU=y +CONFIG_ARM_SPE_PMU=m # CONFIG_ARM_DMC620_PMU is not set # CONFIG_MARVELL_CN10K_TAD_PMU is not set # CONFIG_ALIBABA_UNCORE_DRW_PMU is not set diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 1d20beb4bb6d..58a65ea1fd45 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -1999,7 +1999,7 @@ CONFIG_PCIEASPM_DEFAULT=y CONFIG_PCIE_PME=y CONFIG_PCIE_DPC=y # CONFIG_PCIE_PTM is not set -# CONFIG_PCIE_EDR is not set +CONFIG_PCIE_EDR=y CONFIG_PCI_MSI=y CONFIG_PCI_QUIRKS=y # CONFIG_PCI_DEBUG is not set @@ -6895,7 +6895,7 @@ CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" -# CONFIG_RTC_SYSTOHC is not set +CONFIG_RTC_SYSTOHC=y # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y @@ -7097,7 +7097,7 @@ CONFIG_VIRTIO_PCI_LEGACY=y CONFIG_VIRTIO_BALLOON=m CONFIG_VIRTIO_MEM=m CONFIG_VIRTIO_INPUT=m -# CONFIG_VIRTIO_MMIO is not set +CONFIG_VIRTIO_MMIO=m CONFIG_VIRTIO_DMA_SHARED_BUFFER=m # CONFIG_VDPA is not set CONFIG_VHOST_IOTLB=m @@ -9286,7 +9286,7 @@ CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y CONFIG_STRICT_DEVMEM=y -# CONFIG_IO_STRICT_DEVMEM is not set +CONFIG_IO_STRICT_DEVMEM=y # # x86 Debugging -- 2.25.1

2 1

[PATCH openEuler-1.0-LTS] netfilter: nf_conntrack_h323: Add protection for bmp length out of range
by Yang Yingliang 23 Apr '24

23 Apr '24

From: Lena Wang <lena.wang(a)mediatek.com> mainline inclusion from mainline-v6.8 commit 767146637efc528b5e3d31297df115e85a2fd362 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HKAZ CVE: CVE-2024-26851 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- UBSAN load reports an exception of BRK#5515 SHIFT_ISSUE:Bitwise shifts that are out of bounds for their data type. vmlinux get_bitmap(b=75) + 712 <net/netfilter/nf_conntrack_h323_asn1.c:0> vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956 <net/netfilter/nf_conntrack_h323_asn1.c:592> vmlinux decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812 <net/netfilter/nf_conntrack_h323_asn1.c:576> vmlinux decode_choice(base=0xFFFFFFD008037280, level=0) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux DecodeRasMessage() + 304 <net/netfilter/nf_conntrack_h323_asn1.c:833> vmlinux ras_help() + 684 <net/netfilter/nf_conntrack_h323_main.c:1728> vmlinux nf_confirm() + 188 <net/netfilter/nf_conntrack_proto.c:137> Due to abnormal data in skb->data, the extension bitmap length exceeds 32 when decoding ras message then uses the length to make a shift operation. It will change into negative after several loop. UBSAN load could detect a negative shift as an undefined behaviour and reports exception. So we add the protection to avoid the length exceeding 32. Or else it will return out of range error and stop decoding. Fixes: 5e35941d9901 ("[NETFILTER]: Add H.323 conntrack/NAT helper") Signed-off-by: Lena Wang <lena.wang(a)mediatek.com> Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- net/netfilter/nf_conntrack_h323_asn1.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/netfilter/nf_conntrack_h323_asn1.c b/net/netfilter/nf_conntrack_h323_asn1.c index 4c2ef42e189c..82dae553a5fc 100644 --- a/net/netfilter/nf_conntrack_h323_asn1.c +++ b/net/netfilter/nf_conntrack_h323_asn1.c @@ -536,6 +536,8 @@ static int decode_seq(struct bitstr *bs, const struct field_t *f, /* Get fields bitmap */ if (nf_h323_error_boundary(bs, 0, f->sz)) return H323_ERROR_BOUND; + if (f->sz > 32) + return H323_ERROR_RANGE; bmp = get_bitmap(bs, f->sz); if (base) *(unsigned int *)base = bmp; @@ -592,6 +594,8 @@ static int decode_seq(struct bitstr *bs, const struct field_t *f, bmp2_len = get_bits(bs, 7) + 1; if (nf_h323_error_boundary(bs, 0, bmp2_len)) return H323_ERROR_BOUND; + if (bmp2_len > 32) + return H323_ERROR_RANGE; bmp2 = get_bitmap(bs, bmp2_len); bmp |= bmp2 >> f->sz; if (base) -- 2.25.1

2 1

[PATCH OLK-6.6] openeuler_defconfig: update the config of the minimum set
by Peng Zhang 23 Apr '24

23 Apr '24

From: ZhangPeng <zhangpeng362(a)huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT --------------------------- Update the config of the minimum set list. Suggested-by: Dukaitian <dukaitian(a)huawei.com> Signed-off-by: ZhangPeng <zhangpeng362(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 18 +++++++++--------- arch/x86/configs/openeuler_defconfig | 10 +++++----- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9a6ef6175717..816f0177678e 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -1769,7 +1769,7 @@ CONFIG_NET_SCH_MQPRIO=m CONFIG_NET_SCH_CHOKE=m CONFIG_NET_SCH_QFQ=m CONFIG_NET_SCH_CODEL=m -CONFIG_NET_SCH_FQ_CODEL=m +CONFIG_NET_SCH_FQ_CODEL=y # CONFIG_NET_SCH_CAKE is not set CONFIG_NET_SCH_FQ=m CONFIG_NET_SCH_HHF=m @@ -2466,7 +2466,7 @@ CONFIG_ALTERA_STAPL=m CONFIG_MISC_RTSX_PCI=m CONFIG_MISC_RTSX_USB=m CONFIG_UACCE=m -# CONFIG_PVPANIC is not set +CONFIG_PVPANIC=y # CONFIG_GP_PCI1XXXX is not set # end of Misc devices @@ -5280,7 +5280,7 @@ CONFIG_AUXDISPLAY=y # CONFIG_CHARLCD_BL_OFF is not set # CONFIG_CHARLCD_BL_ON is not set CONFIG_CHARLCD_BL_FLASH=y -CONFIG_DRM=y +CONFIG_DRM=m # CONFIG_DRM_DEBUG_MM is not set CONFIG_DRM_KMS_HELPER=y # CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set @@ -6198,7 +6198,7 @@ CONFIG_RTC_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" -# CONFIG_RTC_SYSTOHC is not set +CONFIG_RTC_SYSTOHC=y # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y @@ -6425,7 +6425,7 @@ CONFIG_VIRTIO_PCI_LEGACY=y # CONFIG_VIRTIO_VDPA is not set # CONFIG_VIRTIO_PMEM is not set CONFIG_VIRTIO_BALLOON=m -# CONFIG_VIRTIO_MEM is not set +CONFIG_VIRTIO_MEM=m CONFIG_VIRTIO_INPUT=m CONFIG_VIRTIO_MMIO=m # CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set @@ -6693,7 +6693,7 @@ CONFIG_EXTCON_GPIO=m # CONFIG_EXTCON_USBC_TUSB320 is not set # CONFIG_MEMORY is not set # CONFIG_IIO is not set -# CONFIG_NTB is not set +CONFIG_NTB=m CONFIG_PWM=y CONFIG_PWM_SYSFS=y # CONFIG_PWM_DEBUG is not set @@ -6728,7 +6728,7 @@ CONFIG_QCOM_IRQ_COMBINER=y # end of IRQ chip support # CONFIG_IPACK_BUS is not set -CONFIG_RESET_CONTROLLER=y +CONFIG_RESET_CONTROLLER=m # CONFIG_RESET_QCOM_AOSS is not set # CONFIG_RESET_QCOM_PDC is not set # CONFIG_RESET_SIMPLE is not set @@ -6797,14 +6797,14 @@ CONFIG_ARM_CCN=y # CONFIG_ARM_CMN is not set CONFIG_ARM_PMU=y CONFIG_ARM_PMU_ACPI=y -CONFIG_ARM_SMMU_V3_PMU=y +CONFIG_ARM_SMMU_V3_PMU=m CONFIG_ARM_PMUV3=y # CONFIG_ARM_DSU_PMU is not set CONFIG_QCOM_L2_PMU=y CONFIG_QCOM_L3_PMU=y CONFIG_THUNDERX2_PMU=m CONFIG_XGENE_PMU=y -CONFIG_ARM_SPE_PMU=y +CONFIG_ARM_SPE_PMU=m # CONFIG_ARM_DMC620_PMU is not set # CONFIG_MARVELL_CN10K_TAD_PMU is not set # CONFIG_ALIBABA_UNCORE_DRW_PMU is not set diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 1d20beb4bb6d..5c4b846c8850 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -1999,7 +1999,7 @@ CONFIG_PCIEASPM_DEFAULT=y CONFIG_PCIE_PME=y CONFIG_PCIE_DPC=y # CONFIG_PCIE_PTM is not set -# CONFIG_PCIE_EDR is not set +CONFIG_PCIE_EDR=y CONFIG_PCI_MSI=y CONFIG_PCI_QUIRKS=y # CONFIG_PCI_DEBUG is not set @@ -6895,7 +6895,7 @@ CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" -# CONFIG_RTC_SYSTOHC is not set +CONFIG_RTC_SYSTOHC=y # CONFIG_RTC_DEBUG is not set CONFIG_RTC_NVMEM=y @@ -7097,7 +7097,7 @@ CONFIG_VIRTIO_PCI_LEGACY=y CONFIG_VIRTIO_BALLOON=m CONFIG_VIRTIO_MEM=m CONFIG_VIRTIO_INPUT=m -# CONFIG_VIRTIO_MMIO is not set +CONFIG_VIRTIO_MMIO=m CONFIG_VIRTIO_DMA_SHARED_BUFFER=m # CONFIG_VDPA is not set CONFIG_VHOST_IOTLB=m @@ -7960,7 +7960,7 @@ CONFIG_PWM_LPSS_PLATFORM=m # end of IRQ chip support # CONFIG_IPACK_BUS is not set -# CONFIG_RESET_CONTROLLER is not set +CONFIG_RESET_CONTROLLER=m # # PHY Subsystem @@ -9286,7 +9286,7 @@ CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y CONFIG_STRICT_DEVMEM=y -# CONFIG_IO_STRICT_DEVMEM is not set +CONFIG_IO_STRICT_DEVMEM=y # # x86 Debugging -- 2.25.1

2 1

[PATCH openEuler-1.0-LTS] cachefiles: fix memory leak in cachefiles_add_cache()
by Baokun Li 23 Apr '24

23 Apr '24

stable inclusion from stable-v4.19.309 commit cb5466783793e66272624cf71925ae1d1ba32083 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HJVQ CVE: CVE-2024-26840 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e21a2f17566cbd64926fb8f16323972f7a064444 upstream. The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks. Fixes: 9ae326a69004 ("CacheFiles: A cache that backs onto a mounted filesystem") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Link: https://lore.kernel.org/r/20240217081431.796809-1-libaokun1@huawei.com Acked-by: David Howells <dhowells(a)redhat.com> Reviewed-by: Jingbo Xu <jefflexu(a)linux.alibaba.com> Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Christian Brauner <brauner(a)kernel.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/cachefiles/bind.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index 4a717d400807..9b34d46bf8ee 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -249,6 +249,8 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); + put_cred(cache->cache_cred); + cache->cache_cred = NULL; pr_err("Failed to register: %d\n", ret); return ret; } @@ -269,6 +271,7 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) dput(cache->graveyard); mntput(cache->mnt); + put_cred(cache->cache_cred); kfree(cache->rootdirname); kfree(cache->secctx); -- 2.31.1

2 1

[PATCH openEuler-22.03-LTS] cachefiles: fix memory leak in cachefiles_add_cache()
by Baokun Li 23 Apr '24

23 Apr '24

stable inclusion from stable-v5.10.212 commit 43eccc5823732ba6daab2511ed32dfc545a666d8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HJVQ CVE: CVE-2024-26840 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e21a2f17566cbd64926fb8f16323972f7a064444 upstream. The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks. Fixes: 9ae326a69004 ("CacheFiles: A cache that backs onto a mounted filesystem") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Link: https://lore.kernel.org/r/20240217081431.796809-1-libaokun1@huawei.com Acked-by: David Howells <dhowells(a)redhat.com> Reviewed-by: Jingbo Xu <jefflexu(a)linux.alibaba.com> Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Christian Brauner <brauner(a)kernel.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/cachefiles/bind.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index dfb14dbddf51..3b39552c2365 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -245,6 +245,8 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); + put_cred(cache->cache_cred); + cache->cache_cred = NULL; pr_err("Failed to register: %d\n", ret); return ret; } @@ -265,6 +267,7 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) dput(cache->graveyard); mntput(cache->mnt); + put_cred(cache->cache_cred); kfree(cache->rootdirname); kfree(cache->secctx); -- 2.31.1

2 1

[PATCH openEuler-1.0-LTS] nvme-fc: do not wait in vain when unloading module
by Li Lingfeng 23 Apr '24

23 Apr '24

From: Daniel Wagner <dwagner(a)suse.de> mainline inclusion from mainline-v6.8-rc3 commit 70fbfc47a392b98e5f8dba70c6efc6839205c982 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HJSI CVE: CVE-2024-26846 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too. Reviewed-by: Christoph Hellwig <hch(a)lst.de> Reviewed-by: Hannes Reinecke <hare(a)suse.de> Signed-off-by: Daniel Wagner <dwagner(a)suse.de> Signed-off-by: Keith Busch <kbusch(a)kernel.org> Conflict: drivers/nvme/host/fc.c Commit 97faec531460("nvme_fc: add 'nvme_discovery' sysfs attribute to fc transport device") define static fc_class and replace class_destroy with class_unregister to release fc_class; Commit 3dd83f4013f0("nvme-fc: replace ida_simple[get|remove] with the simler ida_[alloc|free]") replace ida_simple_remove with the simler ida_free; Commit 9c2bb2577d81("nvme-fc: remove err_work work item") remove the use of nvme_fc_wq. Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/nvme/host/fc.c | 36 +++++------------------------------- 1 file changed, 5 insertions(+), 31 deletions(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 8cc714c4c35c..476a267e090a 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -211,9 +211,6 @@ static DEFINE_IDA(nvme_fc_ctrl_cnt); static struct workqueue_struct *nvme_fc_wq; -static bool nvme_fc_waiting_to_unload; -static DECLARE_COMPLETION(nvme_fc_unload_proceed); - /* * These items are short-term. They will eventually be moved into * a generic FC class. See comments in module init. @@ -240,8 +237,6 @@ nvme_fc_free_lport(struct kref *ref) /* remove from transport list */ spin_lock_irqsave(&nvme_fc_lock, flags); list_del(&lport->port_list); - if (nvme_fc_waiting_to_unload && list_empty(&nvme_fc_lport_list)) - complete(&nvme_fc_unload_proceed); spin_unlock_irqrestore(&nvme_fc_lock, flags); ida_simple_remove(&nvme_fc_local_port_cnt, lport->localport.port_num); @@ -3416,42 +3411,21 @@ nvme_fc_delete_controllers(struct nvme_fc_rport *rport) spin_unlock(&rport->lock); } -static void -nvme_fc_cleanup_for_unload(void) +static void __exit nvme_fc_exit_module(void) { struct nvme_fc_lport *lport; struct nvme_fc_rport *rport; - - list_for_each_entry(lport, &nvme_fc_lport_list, port_list) { - list_for_each_entry(rport, &lport->endp_list, endp_list) { - nvme_fc_delete_controllers(rport); - } - } -} - -static void __exit nvme_fc_exit_module(void) -{ unsigned long flags; - bool need_cleanup = false; spin_lock_irqsave(&nvme_fc_lock, flags); - nvme_fc_waiting_to_unload = true; - if (!list_empty(&nvme_fc_lport_list)) { - need_cleanup = true; - nvme_fc_cleanup_for_unload(); - } + list_for_each_entry(lport, &nvme_fc_lport_list, port_list) + list_for_each_entry(rport, &lport->endp_list, endp_list) + nvme_fc_delete_controllers(rport); spin_unlock_irqrestore(&nvme_fc_lock, flags); - if (need_cleanup) { - pr_info("%s: waiting for ctlr deletes\n", __func__); - wait_for_completion(&nvme_fc_unload_proceed); - pr_info("%s: ctrl deletes complete\n", __func__); - } + flush_workqueue(nvme_delete_wq); nvmf_unregister_transport(&nvme_fc_transport); - ida_destroy(&nvme_fc_local_port_cnt); - ida_destroy(&nvme_fc_ctrl_cnt); - device_destroy(fc_class, MKDEV(0, 0)); class_destroy(fc_class); destroy_workqueue(nvme_fc_wq); -- 2.31.1

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[PATCH openEuler-22.03-LTS-SP1] cachefiles: fix memory leak in cachefiles_add_cache()
by Baokun Li 23 Apr '24

23 Apr '24

stable inclusion from stable-v5.10.212 commit 43eccc5823732ba6daab2511ed32dfc545a666d8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HJVQ CVE: CVE-2024-26840 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e21a2f17566cbd64926fb8f16323972f7a064444 upstream. The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks. Fixes: 9ae326a69004 ("CacheFiles: A cache that backs onto a mounted filesystem") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Link: https://lore.kernel.org/r/20240217081431.796809-1-libaokun1@huawei.com Acked-by: David Howells <dhowells(a)redhat.com> Reviewed-by: Jingbo Xu <jefflexu(a)linux.alibaba.com> Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Christian Brauner <brauner(a)kernel.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/cachefiles/bind.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index dfb14dbddf51..3b39552c2365 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -245,6 +245,8 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); + put_cred(cache->cache_cred); + cache->cache_cred = NULL; pr_err("Failed to register: %d\n", ret); return ret; } @@ -265,6 +267,7 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) dput(cache->graveyard); mntput(cache->mnt); + put_cred(cache->cache_cred); kfree(cache->rootdirname); kfree(cache->secctx); -- 2.31.1

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[PATCH openEuler-22.03-LTS-SP2] cachefiles: fix memory leak in cachefiles_add_cache()
by Baokun Li 23 Apr '24

23 Apr '24

stable inclusion from stable-v5.10.212 commit 43eccc5823732ba6daab2511ed32dfc545a666d8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HJVQ CVE: CVE-2024-26840 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e21a2f17566cbd64926fb8f16323972f7a064444 upstream. The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks. Fixes: 9ae326a69004 ("CacheFiles: A cache that backs onto a mounted filesystem") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Link: https://lore.kernel.org/r/20240217081431.796809-1-libaokun1@huawei.com Acked-by: David Howells <dhowells(a)redhat.com> Reviewed-by: Jingbo Xu <jefflexu(a)linux.alibaba.com> Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Christian Brauner <brauner(a)kernel.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/cachefiles/bind.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index dfb14dbddf51..3b39552c2365 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -245,6 +245,8 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); + put_cred(cache->cache_cred); + cache->cache_cred = NULL; pr_err("Failed to register: %d\n", ret); return ret; } @@ -265,6 +267,7 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) dput(cache->graveyard); mntput(cache->mnt); + put_cred(cache->cache_cred); kfree(cache->rootdirname); kfree(cache->secctx); -- 2.31.1

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