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[PATCH OLK-6.6] misc: uacce - fix a null pointer access issue when poweroff
by Chenghai Huang 14 Nov '25

14 Nov '25

driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID6IAP CVE: NA ---------------------------------------------------------------------- When "poweroff -f" is call in virt, if there are accelerator services that have not yet completed, a situation may arise where uacce_fops_release and uacce_remove are executed concurrently. This can lead to the uacce_put_queue operation in uacce_fops_release accessing an empty ops pointer. Fixes: 642aa7325494 ("uacce: add stop_queue to replace put_queue in ioctl") Signed-off-by: Chenghai Huang <huangchenghai2(a)huawei.com> Signed-off-by: JiangShui Yang <yangjiangshui(a)h-partners.com> --- drivers/misc/uacce/uacce.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c index 04f2658712da..4dcf3bff4c8f 100644 --- a/drivers/misc/uacce/uacce.c +++ b/drivers/misc/uacce/uacce.c @@ -47,10 +47,13 @@ static int uacce_stop_queue(struct uacce_queue *q) { struct uacce_device *uacce = q->uacce; - if ((q->state == UACCE_Q_STARTED) && uacce->ops->stop_queue) + if (q->state != UACCE_Q_STARTED) + return 0; + + if (uacce->ops->stop_queue) uacce->ops->stop_queue(q); - q->state = UACCE_Q_ZOMBIE; + q->state = UACCE_Q_INIT; return 0; } @@ -61,8 +64,13 @@ static void uacce_put_queue(struct uacce_queue *q) uacce_stop_queue(q); + if (q->state != UACCE_Q_INIT) + return; + if (uacce->ops->put_queue) uacce->ops->put_queue(q); + + q->state = UACCE_Q_ZOMBIE; } static long uacce_get_ss_dma(struct uacce_queue *q, void __user *arg) -- 2.43.0

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[PATCH OLK-5.10 0/5] zcopy: A zero-copy data transfer mechanism for HPC
by Liu Mingrui 14 Nov '25

14 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for High Performance Computing (HPC) workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages (2MB). Liu Mingrui (5): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable MAINTAINERS | 6 + drivers/Kconfig | 2 + drivers/Makefile | 3 + drivers/zcopy/Kconfig | 32 ++ drivers/zcopy/Makefile | 2 + drivers/zcopy/zcopy.c | 693 ++++++++++++++++++++++++++++++++++ include/trace/events/attach.h | 157 ++++++++ 7 files changed, 895 insertions(+) create mode 100644 drivers/zcopy/Kconfig create mode 100644 drivers/zcopy/Makefile create mode 100644 drivers/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

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[PATCH OLK-5.10 0/5] zcopy: A zero-copy data transfer mechanism for HPC
by Liu Mingrui 14 Nov '25

14 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for High Performance Computing (HPC) workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages (2MB). Liu Mingrui (5): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable MAINTAINERS | 6 + drivers/Kconfig | 2 + drivers/Makefile | 3 + drivers/zcopy/Kconfig | 32 ++ drivers/zcopy/Makefile | 2 + drivers/zcopy/zcopy.c | 693 ++++++++++++++++++++++++++++++++++ include/trace/events/attach.h | 157 ++++++++ 7 files changed, 895 insertions(+) create mode 100644 drivers/zcopy/Kconfig create mode 100644 drivers/zcopy/Makefile create mode 100644 drivers/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

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[PATCH OLK-6.6 0/5] zcopy: A zero-copy data transfer mechanism for HPC
by Liu Mingrui 14 Nov '25

14 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for High Performance Computing (HPC) workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages (2MB). Liu Mingrui (5): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable MAINTAINERS | 6 + drivers/Kconfig | 2 + drivers/Makefile | 3 + drivers/zcopy/Kconfig | 32 ++ drivers/zcopy/Makefile | 2 + drivers/zcopy/zcopy.c | 916 ++++++++++++++++++++++++++++++++++ include/trace/events/attach.h | 157 ++++++ 7 files changed, 1118 insertions(+) create mode 100644 drivers/zcopy/Kconfig create mode 100644 drivers/zcopy/Makefile create mode 100644 drivers/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

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[PATCH OLK-6.6 v8 0/9] Add xcall 2.0 support
by Jinjie Ruan 14 Nov '25

14 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Changes in v8: - Fix no reigister and unregister null-ptr-ref bug by find prog first. - Fix xcall_comm_write write empty null-ptr-ref bug in memdup_user_nul(). - Add empty owner, exceed 64 prog name and repeat syscall check in check_prog(). - Move INIT_LIST_HEAD(&prog->list) to xcall_prog_register() instead of kernel module. Changes in v7: - Fix alternative bug in sync ventry. - Add "xcall" limit for xcall2.0 and hardware xcall. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 ++++---- arch/arm64/kernel/cpufeature.c | 79 ++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 403 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 139 +++++-- arch/arm64/kernel/xcall/proc.c | 229 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 66 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 89 +++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 28 files changed, 1215 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 include/linux/xcall.h -- 2.34.1

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[PATCH openEuler-1.0-LTS 0/2] Fix CVE-2025-39964
by Gu Bowen 14 Nov '25

14 Nov '25

CVE-2025-39964 Eric Biggers (1): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Herbert Xu (1): crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg crypto/af_alg.c | 7 +++++++ include/crypto/if_alg.h | 10 ++++++---- 2 files changed, 13 insertions(+), 4 deletions(-) -- 2.43.0

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[PATCH OLK-6.6 0/5] zcopy: A zero-copy data transfer mechanism for HPC
by Liu Mingrui 14 Nov '25

14 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for High Performance Computing (HPC) workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages (2MB). Liu Mingrui (5): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable MAINTAINERS | 6 + drivers/Kconfig | 2 + drivers/Makefile | 3 + drivers/zcopy/Kconfig | 32 ++ drivers/zcopy/Makefile | 2 + drivers/zcopy/zcopy.c | 902 ++++++++++++++++++++++++++++++++++ include/trace/events/attach.h | 157 ++++++ 7 files changed, 1104 insertions(+) create mode 100644 drivers/zcopy/Kconfig create mode 100644 drivers/zcopy/Makefile create mode 100644 drivers/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

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[openeuler:OLK-6.6 3184/3184] drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1079:2: warning: unannotated fall-through between switch labels
by kernel test robot 14 Nov '25

14 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5cd3a0597fbb381c1713f27fe723b340d36f331a commit: 0e80b39fcf6c1b2a13b11f8632b185a89b012b14 [3184/3184] net: wangxun: ngbe: add support for wangxun 1G config: loongarch-randconfig-002-20251114 (https://download.01.org/0day-ci/archive/20251114/202511140839.9biSTcQm-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251114/202511140839.9biSTcQm-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511140839.9biSTcQm-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1079:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 1079 | case NGBE_VF_BACKUP: | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1079:2: note: insert 'break;' to avoid fall-through 1079 | case NGBE_VF_BACKUP: | ^ | break; 1 warning generated. -- In file included from drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:43: In file included from include/net/vxlan.h:11: In file included from include/net/nexthop.h:17: include/net/ip6_fib.h:281:10: warning: default initialization of an object of type 'typeof (f6i->expires)' (aka 'const unsigned long') leaves the object uninitialized [-Wdefault-const-init-var-unsafe] 281 | return time_after(jiffies, f6i->expires); | ^ include/linux/jiffies.h:126:3: note: expanded from macro 'time_after' 126 | typecheck(unsigned long, b) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:3772:6: warning: variable 'vlvfb' set but not used [-Wunused-but-set-variable] 3772 | u32 vlvfb; | ^ >> drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:3878:20: warning: variable 'vlnctrl' set but not used [-Wunused-but-set-variable] 3878 | u32 fctrl, vmolr, vlnctrl; | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:6911:13: warning: unused function 'ngbe_netpoll' [-Wunused-function] 6911 | static void ngbe_netpoll(struct net_device *netdev) | ^~~~~~~~~~~~ 4 warnings generated. -- >> drivers/net/ethernet/wangxun/ngbe/ngbe_ptp.c:631:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 631 | case HWTSTAMP_TX_ON: | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_ptp.c:631:2: note: insert 'break;' to avoid fall-through 631 | case HWTSTAMP_TX_ON: | ^ | break; 1 warning generated. vim +1079 drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c 1005 1006 static int ngbe_rcv_msg_from_vf(struct ngbe_adapter *adapter, u16 vf) 1007 { 1008 u16 mbx_size = NGBE_VXMAILBOX_SIZE; 1009 u32 msgbuf[NGBE_VXMAILBOX_SIZE]; 1010 struct ngbe_hw *hw = &adapter->hw; 1011 s32 retval; 1012 1013 retval = ngbe_read_mbx(hw, msgbuf, mbx_size, vf); 1014 1015 if (retval) { 1016 pr_err("Error receiving message from VF\n"); 1017 return retval; 1018 } 1019 1020 /* this is a message we already processed, do nothing */ 1021 if (msgbuf[0] & (NGBE_VT_MSGTYPE_ACK | NGBE_VT_MSGTYPE_NACK)) 1022 return retval; 1023 1024 /* flush the ack before we write any messages back */ 1025 NGBE_WRITE_FLUSH(hw); 1026 1027 if (msgbuf[0] == NGBE_VF_RESET) 1028 return ngbe_vf_reset_msg(adapter, vf); 1029 1030 /* until the vf completes a virtual function reset it should not be 1031 * allowed to start any configuration. 1032 */ 1033 1034 if (!adapter->vfinfo[vf].clear_to_send) { 1035 msgbuf[0] |= NGBE_VT_MSGTYPE_NACK; 1036 ngbe_write_mbx(hw, msgbuf, 1, vf); 1037 return retval; 1038 } 1039 1040 switch ((msgbuf[0] & 0xFFFF)) { 1041 case NGBE_VF_SET_MAC_ADDR: 1042 retval = ngbe_set_vf_mac_addr(adapter, msgbuf, vf); 1043 break; 1044 case NGBE_VF_SET_MULTICAST: 1045 retval = ngbe_set_vf_multicasts(adapter, msgbuf, vf); 1046 break; 1047 case NGBE_VF_SET_VLAN: 1048 retval = ngbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1049 break; 1050 case NGBE_VF_SET_LPE: 1051 if (msgbuf[1] > NGBE_MAX_JUMBO_FRAME_SIZE) { 1052 e_err(drv, 1053 "VF max_frame %d exceed MAX_JUMBO_FRAME_SIZE\n", 1054 msgbuf[1]); 1055 return -EINVAL; 1056 } 1057 retval = ngbe_set_vf_lpe(adapter, msgbuf[1], vf); 1058 break; 1059 case NGBE_VF_SET_MACVLAN: 1060 retval = ngbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1061 break; 1062 case NGBE_VF_API_NEGOTIATE: 1063 retval = ngbe_negotiate_vf_api(adapter, msgbuf, vf); 1064 break; 1065 case NGBE_VF_GET_QUEUES: 1066 retval = ngbe_get_vf_queues(adapter, msgbuf, vf); 1067 break; 1068 case NGBE_VF_UPDATE_XCAST_MODE: 1069 retval = ngbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1070 break; 1071 case NGBE_VF_GET_LINK_STATE: 1072 retval = ngbe_get_vf_link_state(adapter, msgbuf, vf); 1073 break; 1074 case NGBE_VF_GET_LINK_STATUS: 1075 retval = ngbe_get_vf_link_status(adapter, msgbuf, vf); 1076 break; 1077 case NGBE_VF_GET_FW_VERSION: 1078 retval = ngbe_get_fw_version(adapter, msgbuf, vf); > 1079 case NGBE_VF_BACKUP: 1080 break; 1081 default: 1082 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1083 retval = NGBE_ERR_MBX; 1084 break; 1085 } 1086 1087 /* notify the VF of the results of what it sent us */ 1088 if (retval) 1089 msgbuf[0] |= NGBE_VT_MSGTYPE_NACK; 1090 else 1091 msgbuf[0] |= NGBE_VT_MSGTYPE_ACK; 1092 1093 msgbuf[0] |= NGBE_VT_MSGTYPE_CTS; 1094 1095 ngbe_write_mbx(hw, msgbuf, mbx_size, vf); 1096 1097 return retval; 1098 } 1099 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3177/3177] versioncheck: ./drivers/ub/urma/ubcore/net/ubcore_sock.c: 23 linux/version.h not needed.
by kernel test robot 14 Nov '25

14 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 02aae9b358b7b6ffeedc6e76c0de09aaf467b96c commit: fa2cd1217a55bfd5ad96e991f64f72d9692844e1 [3177/3177] urma: add network framework facilities for ubcore. reproduce: (https://download.01.org/0day-ci/archive/20251113/202511130848.atLAA3dx-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511130848.atLAA3dx-lkp@intel.com/ versioncheck warnings: (new ones prefixed by >>) INFO PATH=/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin /usr/bin/timeout -k 100 3h /usr/bin/make KCFLAGS= -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef W=1 --keep-going LLVM=1 -j32 ARCH=x86_64 versioncheck find ./* \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o \ -name '*.[hcS]' -type f -print | sort \ | xargs perl -w ./scripts/checkversion.pl ./drivers/accessibility/speakup/genmap.c: 13 linux/version.h not needed. ./drivers/accessibility/speakup/makemapdata.c: 13 linux/version.h not needed. ./drivers/char/ipmi/ipmi_si_ls2k500.c: 19 linux/version.h not needed. ./drivers/crypto/ccp/hygon/hct.c: 6 linux/version.h not needed. ./drivers/crypto/ccp/hygon/tdm-dev.h: 29 linux/version.h not needed. ./drivers/crypto/montage/tsse/tsse_vuart.c: 21 linux/version.h not needed. ./drivers/crypto/sedriver/wst_se_common_type.h: 19 linux/version.h not needed. ./drivers/gpu/drm/phytium/phytium_gem.c: 9 linux/version.h not needed. ./drivers/i2c/busses/i2c-zhaoxin.c: 18 linux/version.h not needed. ./drivers/net/ethernet/3snic/sssnic/include/kernel/sss_linux_kernel.h: 13 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/edma_drv/bma_include.h: 32 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c: 17 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h: 20 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.c: 22 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.c: 16 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.c: 16 linux/version.h not needed. ./drivers/net/ethernet/huawei/hinic/ossl_knl.h: 22 linux/version.h not needed. ./drivers/net/ethernet/huawei/hinic3/bond/hinic3_bond.c: 12 linux/version.h not needed. ./drivers/net/ethernet/huawei/hinic3/ossl_knl_linux.h: 12 linux/version.h not needed. ./drivers/net/ethernet/linkdata/sxe/base/compat/sxe_compat.h: 16 linux/version.h not needed. ./drivers/net/ethernet/linkdata/sxevf/base/compat/sxe_compat.h: 16 linux/version.h not needed. ./drivers/net/ethernet/mucse/rnpm/rnpm_common.h: 7 linux/version.h not needed. ./drivers/net/ethernet/yunsilicon/xsc/common/xsc_core.h: 26 linux/version.h not needed. ./drivers/scsi/hisi_raid/hiraid_main.c: 9 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/linux/ps3_base.c: 11 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/linux/ps3_cli.c: 14 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/linux/ps3_driver_log.c: 3 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_device_manager.h: 9 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_device_manager_sas.h: 6 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_qos.c: 6 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_rb_tree.h: 7 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_sas_transport.h: 9 linux/version.h not needed. ./drivers/scsi/linkdata/ps3stor/ps3_scsi_cmd_err.c: 9 linux/version.h not needed. ./drivers/scsi/sssraid/sssraid_fw.c: 6 linux/version.h not needed. ./drivers/scsi/sssraid/sssraid_os.c: 6 linux/version.h not needed. ./drivers/staging/media/atomisp/include/linux/atomisp.h: 23 linux/version.h not needed. >> ./drivers/ub/urma/ubcore/net/ubcore_sock.c: 23 linux/version.h not needed. ./fs/proc/etmem_scan.c: 13 linux/version.h not needed. ./samples/bpf/spintest.bpf.c: 8 linux/version.h not needed. ./samples/trace_events/trace_custom_sched.c: 11 linux/version.h not needed. ./sound/soc/codecs/cs42l42.c: 14 linux/version.h not needed. ./tools/lib/bpf/bpf_helpers.h: 402: need linux/version.h ./tools/testing/selftests/bpf/progs/dev_cgroup.c: 9 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/netcnt_prog.c: 3 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_map_lock.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_send_signal_kern.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_spin_lock.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_tcp_estats.c: 37 linux/version.h not needed. ./tools/testing/selftests/wireguard/qemu/init.c: 27 linux/version.h not needed. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3182/3182] include/linux/migrate.h:102:9: error: expected identifier or '(' before '{' token
by kernel test robot 13 Nov '25

13 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 7c9750f803899fe67a8d281d2d283e8d75d08d4d commit: 2a212a2a044ed85140cdf66e516f6bde7da08e9d [3182/3182] mm: migrate: add isolate_and_migrate_folios() config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20251113/202511131914.MqxXnsR5-lkp@…) compiler: aarch64-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251113/202511131914.MqxXnsR5-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511131914.MqxXnsR5-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from mm/filemap.c:45: >> include/linux/migrate.h:102:9: error: expected identifier or '(' before '{' token 102 | { return -EINVAL; } | ^ >> include/linux/migrate.h:98:19: warning: 'isolate_and_migrate_folios' declared 'static' but never defined [-Wunused-function] 98 | static inline int isolate_and_migrate_folios(struct folio **folios, unsigned int nr_folios, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from mm/shmem.c:72: >> include/linux/migrate.h:102:9: error: expected identifier or '(' before '{' token 102 | { return -EINVAL; } | ^ mm/shmem.c: In function 'shmem_swapin_cluster': mm/shmem.c:1699:51: error: passing argument 3 of 'swap_cluster_readahead' from incompatible pointer type [-Wincompatible-pointer-types] 1699 | folio = swap_cluster_readahead(swap, gfp, mpol, ilx); | ^~~~ | | | struct mempolicy * In file included from mm/shmem.c:43: mm/swap.h:102:66: note: expected 'struct vm_fault *' but argument is of type 'struct mempolicy *' 102 | gfp_t gfp_mask, struct vm_fault *vmf) | ~~~~~~~~~~~~~~~~~^~~ mm/shmem.c:1699:17: error: too many arguments to function 'swap_cluster_readahead'; expected 3, have 4 1699 | folio = swap_cluster_readahead(swap, gfp, mpol, ilx); | ^~~~~~~~~~~~~~~~~~~~~~ ~~~ mm/swap.h:101:29: note: declared here 101 | static inline struct folio *swap_cluster_readahead(swp_entry_t entry, | ^~~~~~~~~~~~~~~~~~~~~~ include/linux/migrate.h: At top level: >> include/linux/migrate.h:98:19: warning: 'isolate_and_migrate_folios' declared 'static' but never defined [-Wunused-function] 98 | static inline int isolate_and_migrate_folios(struct folio **folios, unsigned int nr_folios, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from mm/memory.c:68: >> include/linux/migrate.h:102:9: error: expected identifier or '(' before '{' token 102 | { return -EINVAL; } | ^ mm/memory.c: In function 'do_numa_page': mm/memory.c:5538:24: warning: variable 'nr_pages' set but not used [-Wunused-but-set-variable] 5538 | int flags = 0, nr_pages; | ^~~~~~~~ include/linux/migrate.h: At top level: >> include/linux/migrate.h:98:19: warning: 'isolate_and_migrate_folios' declared 'static' but never defined [-Wunused-function] 98 | static inline int isolate_and_migrate_folios(struct folio **folios, unsigned int nr_folios, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +102 include/linux/migrate.h 89 90 static inline void putback_movable_pages(struct list_head *l) {} 91 static inline int migrate_pages(struct list_head *l, new_folio_t new, 92 free_folio_t free, unsigned long private, 93 enum migrate_mode mode, int reason, unsigned int *ret_succeeded) 94 { return -ENOSYS; } 95 static inline struct folio *alloc_migration_target(struct folio *src, 96 unsigned long private) 97 { return NULL; } > 98 static inline int isolate_and_migrate_folios(struct folio **folios, unsigned int nr_folios, 99 new_folio_t get_new_folio, free_folio_t put_new_folio, 100 unsigned long private, enum migrate_mode mode, 101 unsigned int *nr_succeeded); > 102 { return -EINVAL; } 103 static inline bool isolate_movable_page(struct page *page, isolate_mode_t mode) 104 { return false; } 105 static inline bool isolate_folio_to_list(struct folio *folio, struct list_head *list) 106 { return false; } 107 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10] BUILD REGRESSION f4d827c24653cff795c5372367a6360da8e5964f
by kernel test robot 13 Nov '25

13 Nov '25

tree/branch: https://gitee.com/openeuler/kernel.git OLK-5.10 branch HEAD: f4d827c24653cff795c5372367a6360da8e5964f !18890 ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans Error/Warning (recently discovered and may have been fixed): https://lore.kernel.org/oe-kbuild-all/202510161956.PnDe2iFY-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202511102332.qUTQH99w-lkp@intel.com ../lib/gcc/aarch64-linux/5.5.0/plugin/include/config/elfos.h:102:21: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix] ../lib/gcc/aarch64-linux/5.5.0/plugin/include/defaults.h:126:24: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix] arch/x86/events/intel/core.c:6874:7: warning: variable 'name' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] arch/x86/kvm/x86.c:8644:5: warning: no previous prototype for '__kvm_vcpu_halt' [-Wmissing-prototypes] kernel/sched/soft_domain.c:186:10: error: implicit declaration of function 'cpu_util_cfs' [-Werror,-Wimplicit-function-declaration] mm/compaction.c:56:18: warning: 'HPAGE_FRAG_CHECK_INTERVAL_MSEC' defined but not used [-Wunused-const-variable=] mm/filemap.c:823:14: warning: no previous prototype for '__add_to_page_cache_locked' [-Wmissing-prototypes] mm/page_alloc.c:3603:15: warning: no previous prototype for 'should_fail_alloc_page' [-Wmissing-prototypes] mm/truncate.c:543: warning: Function parameter or member 'end' not described in 'invalidate_mapping_pagevec' mm/truncate.c:543: warning: Function parameter or member 'mapping' not described in 'invalidate_mapping_pagevec' mm/truncate.c:543: warning: Function parameter or member 'nr_pagevec' not described in 'invalidate_mapping_pagevec' mm/truncate.c:543: warning: Function parameter or member 'start' not described in 'invalidate_mapping_pagevec' Unverified Error/Warning (likely false positive, kindly check if interested): mm/vmscan.o: warning: objtool: do_shrink_slab() falls through to next function allow_direct_reclaim() mm/vmscan.o: warning: objtool: shrink_slab() falls through to next function drop_slab() scripts/gcc-plugins/randomize_layout_plugin.c:692:20: error: 'last_stmt' was not declared in this scope; did you mean 'call_stmt'? steal_time.c:325:25: warning: 'pthread_yield' is deprecated: pthread_yield is deprecated, use sched_yield instead [-Wdeprecated-declarations] Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- arm64-defconfig | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- arm64-randconfig-001-20250830 | `-- mm-compaction.c:warning:HPAGE_FRAG_CHECK_INTERVAL_MSEC-defined-but-not-used |-- arm64-randconfig-002-20250321 | |-- lib-gcc-aarch64-linux-..-plugin-include-config-elfos.h:warning:invalid-suffix-on-literal-C-requires-a-space-between-literal-and-string-macro | |-- lib-gcc-aarch64-linux-..-plugin-include-defaults.h:warning:invalid-suffix-on-literal-C-requires-a-space-between-literal-and-string-macro | |-- lib-gcc-aarch64-linux-..-plugin-include-gimple.h:error:field-call_clobbered-has-incomplete-type-pt_solution | |-- lib-gcc-aarch64-linux-..-plugin-include-gimple.h:error:field-call_used-has-incomplete-type-pt_solution | |-- lib-gcc-aarch64-linux-..-plugin-include-gimple.h:error:gimple_call_addr_fndecl-was-not-declared-in-this-scope | `-- lib-gcc-aarch64-linux-..-plugin-include-gimple.h:error:is_gimple_reg-was-not-declared-in-this-scope |-- x86_64-allnoconfig | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-allnoconfig-bpf | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- steal_time.c:warning:pthread_yield-is-deprecated:pthread_yield-is-deprecated-use-sched_yield-instead |-- x86_64-buildonly-randconfig-001-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-buildonly-randconfig-002-20250909 | `-- kernel-sched-soft_domain.c:error:implicit-declaration-of-function-cpu_util_cfs-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-002-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-buildonly-randconfig-003-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-buildonly-randconfig-004-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-buildonly-randconfig-005-20251027 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-buildonly-randconfig-005-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- mm-compaction.c:warning:HPAGE_FRAG_CHECK_INTERVAL_MSEC-defined-but-not-used | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-buildonly-randconfig-006-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-defconfig | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-001-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-002-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:shrink_slab-falls-through-to-next-function-drop_slab() |-- x86_64-randconfig-003-20251113 | |-- arch-x86-kvm-x86.c:warning:no-previous-prototype-for-__kvm_vcpu_halt | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-004-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:shrink_slab-falls-through-to-next-function-drop_slab() |-- x86_64-randconfig-005-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-randconfig-006-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:do_shrink_slab-falls-through-to-next-function-allow_direct_reclaim() |-- x86_64-randconfig-011-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-012-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:shrink_slab-falls-through-to-next-function-drop_slab() |-- x86_64-randconfig-013-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:do_shrink_slab-falls-through-to-next-function-allow_direct_reclaim() |-- x86_64-randconfig-014-20251113 | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-015-20251113 | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-016-20251113 | |-- arch-x86-kvm-x86.c:warning:no-previous-prototype-for-__kvm_vcpu_halt | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-071-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-randconfig-072-20251113 | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-073-20251113 | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-074-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- mm-compaction.c:warning:HPAGE_FRAG_CHECK_INTERVAL_MSEC-defined-but-not-used | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-075-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-randconfig-076-20251113 | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-101-20251113 | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- mm-compaction.c:warning:HPAGE_FRAG_CHECK_INTERVAL_MSEC-defined-but-not-used | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-102-20251113 | |-- arch-x86-kvm-x86.c:warning:no-previous-prototype-for-__kvm_vcpu_halt | |-- block-bfq-cgroup.c:warning:Excess-function-parameter-blkcg-description-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:Function-parameter-or-member-bfqg-not-described-in-__bfq_bic_change_cgroup | |-- block-bfq-cgroup.c:warning:no-previous-prototype-for-bfqg_and_blkg_get | |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked | |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init | |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec |-- x86_64-randconfig-103-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:shrink_slab-falls-through-to-next-function-drop_slab() |-- x86_64-randconfig-104-20251113 | |-- arch-x86-events-intel-core.c:warning:variable-name-is-used-uninitialized-whenever-switch-case-is-taken | |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data | |-- ld.lld:error:version-script-assignment-of-LINUX_2.-to-symbol-__vdso_sgx_enter_enclave-failed:symbol-not-defined | |-- llvm-objcopy:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- llvm-objdump:error:arch-x86-entry-vdso-vdso64.so.dbg:No-such-file-or-directory | |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec | |-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec | `-- mm-vmscan.o:warning:objtool:shrink_slab-falls-through-to-next-function-drop_slab() |-- x86_64-randconfig-121-20250909 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope |-- x86_64-randconfig-161-20251113 | `-- scripts-gcc-plugins-randomize_layout_plugin.c:error:last_stmt-was-not-declared-in-this-scope `-- x86_64-randconfig-r111-20251113 |-- crypto-af_alg.c:warning:Function-parameter-or-member-min-not-described-in-af_alg_wait_for_data |-- mm-filemap.c:warning:no-previous-prototype-for-__add_to_page_cache_locked |-- mm-page_alloc.c:warning:no-previous-prototype-for-arch_memmap_init |-- mm-page_alloc.c:warning:no-previous-prototype-for-should_fail_alloc_page |-- mm-truncate.c:warning:Function-parameter-or-member-end-not-described-in-invalidate_mapping_pagevec |-- mm-truncate.c:warning:Function-parameter-or-member-mapping-not-described-in-invalidate_mapping_pagevec |-- mm-truncate.c:warning:Function-parameter-or-member-nr_pagevec-not-described-in-invalidate_mapping_pagevec `-- mm-truncate.c:warning:Function-parameter-or-member-start-not-described-in-invalidate_mapping_pagevec elapsed time: 1552m configs tested: 32 configs skipped: 103 tested configs: arm64 allnoconfig gcc-15.1.0 arm64 defconfig gcc-15.1.0 arm64 randconfig-001-20251113 clang-16 arm64 randconfig-002-20251113 clang-22 arm64 randconfig-003-20251113 gcc-5.5.0 arm64 randconfig-004-20251113 clang-22 x86_64 allnoconfig clang-20 x86_64 buildonly-randconfig-001-20251113 gcc-14 x86_64 buildonly-randconfig-002-20251113 clang-20 x86_64 buildonly-randconfig-003-20251113 clang-20 x86_64 buildonly-randconfig-004-20251113 gcc-14 x86_64 buildonly-randconfig-005-20251113 gcc-12 x86_64 buildonly-randconfig-006-20251113 gcc-14 x86_64 defconfig gcc-14 x86_64 randconfig-001-20251113 gcc-13 x86_64 randconfig-002-20251113 clang-20 x86_64 randconfig-003-20251113 gcc-14 x86_64 randconfig-004-20251113 clang-20 x86_64 randconfig-005-20251113 gcc-14 x86_64 randconfig-006-20251113 clang-20 x86_64 randconfig-011-20251113 gcc-14 x86_64 randconfig-012-20251113 clang-20 x86_64 randconfig-013-20251113 clang-20 x86_64 randconfig-014-20251113 gcc-14 x86_64 randconfig-015-20251113 gcc-14 x86_64 randconfig-016-20251113 gcc-12 x86_64 randconfig-071-20251113 gcc-14 x86_64 randconfig-072-20251113 gcc-12 x86_64 randconfig-073-20251113 gcc-12 x86_64 randconfig-074-20251113 gcc-14 x86_64 randconfig-075-20251113 gcc-14 x86_64 randconfig-076-20251113 gcc-14 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/2] arm64/mpam: Add quirk to shrink MATA PMG range
by Zeng Heng 13 Nov '25

13 Nov '25

Zeng Heng (2): arm64/mpam: Add quirk to shrink MATA PMG range arm64/mpam: Merge redundant local static variables 'cpus' drivers/platform/mpam/mpam_devices.c | 59 +++++++++++++++------------ drivers/platform/mpam/mpam_internal.h | 1 + drivers/platform/mpam/mpam_resctrl.c | 20 --------- 3 files changed, 34 insertions(+), 46 deletions(-) -- 2.25.1

2 3

[openeuler:OLK-6.6 3182/3182] include/linux/migrate.h:102:2: error: expected identifier or '('
by kernel test robot 13 Nov '25

13 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 7c9750f803899fe67a8d281d2d283e8d75d08d4d commit: 2a212a2a044ed85140cdf66e516f6bde7da08e9d [3182/3182] mm: migrate: add isolate_and_migrate_folios() config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251113/202511131826.yzKdVxQW-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251113/202511131826.yzKdVxQW-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511131826.yzKdVxQW-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from mm/filemap.c:45: >> include/linux/migrate.h:102:2: error: expected identifier or '(' 102 | { return -EINVAL; } | ^ 1 error generated. -- In file included from mm/shmem.c:72: >> include/linux/migrate.h:102:2: error: expected identifier or '(' 102 | { return -EINVAL; } | ^ mm/shmem.c:1699:50: error: too many arguments to function call, expected 3, have 4 1699 | folio = swap_cluster_readahead(swap, gfp, mpol, ilx); | ~~~~~~~~~~~~~~~~~~~~~~ ^~~ mm/swap.h:101:29: note: 'swap_cluster_readahead' declared here 101 | static inline struct folio *swap_cluster_readahead(swp_entry_t entry, | ^ ~~~~~~~~~~~~~~~~~~ 102 | gfp_t gfp_mask, struct vm_fault *vmf) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 errors generated. -- In file included from mm/memory.c:68: >> include/linux/migrate.h:102:2: error: expected identifier or '(' 102 | { return -EINVAL; } | ^ In file included from mm/memory.c:89: In file included from arch/loongarch/include/asm/tlb.h:140: include/asm-generic/tlb.h:632:10: warning: parameter 'ptep' set but not used [-Wunused-but-set-parameter] 632 | pte_t *ptep, unsigned int nr, unsigned long address) | ^ In file included from mm/memory.c:89: arch/loongarch/include/asm/tlb.h:144:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe] 144 | struct vm_area_struct vma; | ^ include/linux/mm_types.h:659:20: note: member 'vm_flags' declared 'const' here 659 | const vm_flags_t vm_flags; | ^ mm/memory.c:5538:17: warning: variable 'nr_pages' set but not used [-Wunused-but-set-variable] 5538 | int flags = 0, nr_pages; | ^ 3 warnings and 1 error generated. -- In file included from mm/mprotect.c:25: >> include/linux/migrate.h:102:2: error: expected identifier or '(' 102 | { return -EINVAL; } | ^ In file included from mm/mprotect.c:38: In file included from arch/loongarch/include/asm/tlb.h:140: include/asm-generic/tlb.h:632:10: warning: parameter 'ptep' set but not used [-Wunused-but-set-parameter] 632 | pte_t *ptep, unsigned int nr, unsigned long address) | ^ In file included from mm/mprotect.c:38: arch/loongarch/include/asm/tlb.h:144:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe] 144 | struct vm_area_struct vma; | ^ include/linux/mm_types.h:659:20: note: member 'vm_flags' declared 'const' here 659 | const vm_flags_t vm_flags; | ^ 2 warnings and 1 error generated. vim +102 include/linux/migrate.h 89 90 static inline void putback_movable_pages(struct list_head *l) {} 91 static inline int migrate_pages(struct list_head *l, new_folio_t new, 92 free_folio_t free, unsigned long private, 93 enum migrate_mode mode, int reason, unsigned int *ret_succeeded) 94 { return -ENOSYS; } 95 static inline struct folio *alloc_migration_target(struct folio *src, 96 unsigned long private) 97 { return NULL; } 98 static inline int isolate_and_migrate_folios(struct folio **folios, unsigned int nr_folios, 99 new_folio_t get_new_folio, free_folio_t put_new_folio, 100 unsigned long private, enum migrate_mode mode, 101 unsigned int *nr_succeeded); > 102 { return -EINVAL; } 103 static inline bool isolate_movable_page(struct page *page, isolate_mode_t mode) 104 { return false; } 105 static inline bool isolate_folio_to_list(struct folio *folio, struct list_head *list) 106 { return false; } 107 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/3] wakeup kswapd during node_reclaim
by Wupeng Ma 13 Nov '25

13 Nov '25

wakeup kswapd during node_reclaim and add new bits for zone recalim to enable this kind of swap. Wupeng Ma (3): arch_numa: Make node reclaim distance adjustment always available mm: vmscan: wakeup kswapd during node_reclaim mm: node_reclaim: add wakeup kswapd mode Documentation/admin-guide/sysctl/vm.rst | 1 + drivers/base/arch_numa.c | 40 ++++++++++++------------- include/linux/swap.h | 3 +- include/uapi/linux/mempolicy.h | 1 + mm/internal.h | 5 ++-- mm/page_alloc.c | 3 +- mm/vmscan.c | 7 ++++- 7 files changed, 35 insertions(+), 25 deletions(-) -- 2.43.0

2 4

[PATCH OLK-5.10] erofs: Fix erofs_bmap error
by Zizhi Wo 13 Nov '25

13 Nov '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID6FYU -------------------------------- Currently, there is an issue with the bmap of erofs. When formatted as the chunk type, the bmap returns not the block granularity but the chunk granularity, which is inaccurate. Unify it with the bmap of other file systems, return the block granularity. Calculate the offset within the chunk to solve this problem. Fixes: 9da681e017a3 ("staging: erofs: support bmap") Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- fs/erofs/data.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/erofs/data.c b/fs/erofs/data.c index e228a2d52aaf..99c5da8e6338 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -458,6 +458,7 @@ static sector_t erofs_bmap(struct address_space *mapping, sector_t block) struct erofs_map_blocks map = { .m_la = blknr_to_addr(block), }; + erofs_off_t offset = map.m_la; if (EROFS_I(inode)->datalayout == EROFS_INODE_FLAT_INLINE) { erofs_blk_t blks = i_size_read(inode) >> LOG_BLOCK_SIZE; @@ -467,7 +468,7 @@ static sector_t erofs_bmap(struct address_space *mapping, sector_t block) } if (!erofs_map_blocks(inode, &map)) - return erofs_blknr(map.m_pa); + return erofs_blknr(map.m_pa + offset - map.m_la); return 0; } -- 2.39.2

2 1

[PATCH OLK-6.6 00/15] mm: add huge pfnmap support for remap_pfn_range()
by Yin Tirui 13 Nov '25

13 Nov '25

Overview ======== This patch series adds huge page support for remap_pfn_range(), automatically creating huge mappings when prerequisites are satisfied (size, alignment, architecture support, etc.) and falling back to normal page mappings otherwise. This work builds on Peter Xu's previous efforts on huge pfnmap support [0]. TODO ==== - Add PUD-level huge page support. Currently, only PMD-level huge pages are supported. - Consider the logic related to vmap_page_range and extract reusable common code. Tests Done ========== - Cross-build tests. - Performance tests with custom device driver implementing mmap() with remap_pfn_range(): - lat_mem_rd benchmark modified to use mmap(device_fd) instead of malloc() shows around 40% improvement in memory access latency with huge page support compared to normal page mappings. numactl -C 0 lat_mem_rd -t 4096M (stride=64) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 64.00 148.858 ns 100.780 ns 32.3% 128.00 164.745 ns 103.537 ns 37.2% 256.00 169.907 ns 103.179 ns 39.3% 512.00 171.285 ns 103.072 ns 39.8% 1024.00 173.054 ns 103.055 ns 40.4% 2048.00 172.820 ns 103.091 ns 40.3% 4096.00 172.877 ns 103.115 ns 40.4% - Custom memory copy operations on mmap(device_fd) show around 18% performance improvement with huge page support compared to normal page mappings. numactl -C 0 memcpy_test (memory copy performance test) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 1024.00 95.76 ms 77.91 ms 18.6% 2048.00 190.87 ms 155.64 ms 18.5% 4096.00 380.84 ms 311.45 ms 18.2% [0] https://lore.kernel.org/all/20240826204353.2228736-2-peterx@redhat.com/T/#u David Hildenbrand (1): mm/huge_memory: check pmd_special() only after pmd_present() Peter Xu (11): mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud mm: drop is_huge_zero_pud() mm: mark special bits for huge pfn mappings when inject mm: allow THP orders for PFNMAPs mm/gup: detect huge pfnmap entries in gup-fast mm/pagewalk: check pfnmap for folio_walk_start() mm/fork: accept huge pfnmap entries mm: always define pxx_pgprot() mm/x86: support large pfn mappings mm/arm64: support large pfn mappings arm64: mm: Drop dead code for pud special bit handling Yin Tirui (3): pgtable: add pte_clrhuge() implementation for arm64 mm: introduce remap_pfn_range_try_pmd() for PMD-level hugepage mapping arm64/x86: configs: Enable huge pfnmap support in openeuler defconfig arch/arm64/Kconfig | 1 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/include/asm/pgtable.h | 39 ++++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 2 +- arch/powerpc/include/asm/pgtable.h | 1 + arch/s390/include/asm/pgtable.h | 1 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/x86/Kconfig | 1 + arch/x86/configs/openeuler_defconfig | 2 + arch/x86/include/asm/pgtable.h | 81 +++++++----- fs/dax.c | 2 +- include/linux/huge_mm.h | 16 +-- include/linux/mm.h | 26 ++++ include/linux/pgtable.h | 20 ++- mm/Kconfig | 13 ++ mm/gup.c | 6 + mm/huge_memory.c | 93 ++++++++++---- mm/memory.c | 126 +++++++++++++++---- 18 files changed, 337 insertions(+), 96 deletions(-) -- 2.43.0

2 16

[PATCH OLK-6.6] KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn't valid
by Pan Taixi 13 Nov '25

13 Nov '25

From: Sean Christopherson <seanjc(a)google.com> stable inclusion from stable-v6.6.113 commit cd3efb93677c4b0cf76348882fb429165fee33fd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ID3WHO CVE: CVE-2025-40038 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 0910dd7c9ad45a2605c45fd2bf3d1bcac087687c ] Skip the WRMSR and HLT fastpaths in SVM's VM-Exit handler if the next RIP isn't valid, e.g. because KVM is running with nrips=false. SVM must decode and emulate to skip the instruction if the CPU doesn't provide the next RIP, and getting the instruction bytes to decode requires reading guest memory. Reading guest memory through the emulator can fault, i.e. can sleep, which is disallowed since the fastpath handlers run with IRQs disabled. BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:106 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 32611, name: qemu preempt_count: 1, expected: 0 INFO: lockdep is turned off. irq event stamp: 30580 hardirqs last enabled at (30579): [<ffffffffc08b2527>] vcpu_run+0x1787/0x1db0 [kvm] hardirqs last disabled at (30580): [<ffffffffb4f62e32>] __schedule+0x1e2/0xed0 softirqs last enabled at (30570): [<ffffffffb4247a64>] fpu_swap_kvm_fpstate+0x44/0x210 softirqs last disabled at (30568): [<ffffffffb4247a64>] fpu_swap_kvm_fpstate+0x44/0x210 CPU: 298 UID: 0 PID: 32611 Comm: qemu Tainted: G U 6.16.0-smp--e6c618b51cfe-sleep #782 NONE Tainted: [U]=USER Hardware name: Google Astoria-Turin/astoria, BIOS 0.20241223.2-0 01/17/2025 Call Trace: <TASK> dump_stack_lvl+0x7d/0xb0 __might_resched+0x271/0x290 __might_fault+0x28/0x80 kvm_vcpu_read_guest_page+0x8d/0xc0 [kvm] kvm_fetch_guest_virt+0x92/0xc0 [kvm] __do_insn_fetch_bytes+0xf3/0x1e0 [kvm] x86_decode_insn+0xd1/0x1010 [kvm] x86_emulate_instruction+0x105/0x810 [kvm] __svm_skip_emulated_instruction+0xc4/0x140 [kvm_amd] handle_fastpath_invd+0xc4/0x1a0 [kvm] vcpu_run+0x11a1/0x1db0 [kvm] kvm_arch_vcpu_ioctl_run+0x5cc/0x730 [kvm] kvm_vcpu_ioctl+0x578/0x6a0 [kvm] __se_sys_ioctl+0x6d/0xb0 do_syscall_64+0x8a/0x2c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 RIP: 0033:0x7f479d57a94b </TASK> Note, this is essentially a reapply of commit 5c30e8101e8d ("KVM: SVM: Skip WRMSR fastpath on VM-Exit if next RIP isn't valid"), but with different justification (KVM now grabs SRCU when skipping the instruction for other reasons). Fixes: b439eb8ab578 ("Revert "KVM: SVM: Skip WRMSR fastpath on VM-Exit if next RIP isn't valid"") Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/20250805190526.1453366-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc(a)google.com> [ adapted switch-based MSR/HLT fastpath to if-based MSR-only check ] Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: arch/x86/kvm/svm/svm.c [Context conflicts due to stable commit ca3cc405a3bc ("KVM: x86: Move handling of is_guest_mode() into fastpath exit handlers") not merged. Also this makes nrip check comes after is_guest_mode check, which is fine as both checks return the same exit code.] Signed-off-by: Pan Taixi <pantaixi1(a)huawei.com> --- arch/x86/kvm/svm/svm.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 8692b7892d0f..7bf68a753a97 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4206,8 +4206,17 @@ static int svm_vcpu_pre_run(struct kvm_vcpu *vcpu) static fastpath_t svm_exit_handlers_fastpath(struct kvm_vcpu *vcpu) { - if (to_svm(vcpu)->vmcb->control.exit_code == SVM_EXIT_MSR && - to_svm(vcpu)->vmcb->control.exit_info_1) + struct vcpu_svm *svm = to_svm(vcpu); + + /* + * Next RIP must be provided as IRQs are disabled, and accessing guest + * memory to decode the instruction might fault, i.e. might sleep. + */ + if (!nrips || !svm->vmcb->control.next_rip) + return EXIT_FASTPATH_NONE; + + if (svm->vmcb->control.exit_code == SVM_EXIT_MSR && + svm->vmcb->control.exit_info_1) return handle_fastpath_set_msr_irqoff(vcpu); return EXIT_FASTPATH_NONE; -- 2.34.1

2 1

[openeuler:OLK-6.6 3163/3163] mm/gmem.c:190:26: error: no member named 'mems_allowed' in 'struct task_struct'
by kernel test robot 13 Nov '25

13 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: d07bcf91fa24bfac8f6c62724829741c738bb85d commit: 380709c322aaa306b5ac3c278a0700043f7d33e2 [3163/3163] gmem: prepare config, boot parameter, vma flag and basic GMEM related structs config: arm64-randconfig-002-20251113 (https://download.01.org/0day-ci/archive/20251113/202511131248.lRKFr4Bu-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 996639d6ebb86ff15a8c99b67f1c2e2117636ae7) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251113/202511131248.lRKFr4Bu-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511131248.lRKFr4Bu-lkp@intel.com/ All errors (new ones prefixed by >>): >> mm/gmem.c:190:26: error: no member named 'mems_allowed' in 'struct task_struct' 190 | node_set(nid, current->mems_allowed); | ~~~~~~~ ^ include/linux/nodemask.h:128:50: note: expanded from macro 'node_set' 128 | #define node_set(node, dst) __node_set((node), &(dst)) | ^~~ 1 error generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +190 mm/gmem.c 144 145 int gm_as_attach(struct gm_as *as, struct gm_dev *dev, 146 bool activate, struct gm_context **out_ctx) 147 { 148 struct gm_context *ctx; 149 int nid; 150 151 ctx = kmem_cache_alloc(gm_ctx_cache, GFP_KERNEL); 152 if (!ctx) 153 return -ENOMEM; 154 155 ctx->as = as; 156 ctx->dev = dev; 157 158 INIT_LIST_HEAD(&ctx->gm_dev_link); 159 INIT_LIST_HEAD(&ctx->gm_as_link); 160 161 if (!list_empty(&as->gm_ctx_list)) { 162 struct list_head *old_node; 163 struct gm_context *old_ctx; 164 165 old_node = as->gm_ctx_list.prev; 166 list_del_init(old_node); 167 old_ctx = list_entry(old_node, struct gm_context, gm_as_link); 168 kfree(old_ctx); 169 } 170 171 list_add_tail(&dev->gm_ctx_list, &ctx->gm_dev_link); 172 list_add_tail(&ctx->gm_as_link, &as->gm_ctx_list); 173 174 if (activate) { 175 /* 176 * Here we should really have a callback function to perform the context switch 177 * for the hardware. E.g. in x86 this function is effectively 178 * flushing the CR3 value. Currently we do not care time-sliced context switch, 179 * unless someone wants to support it. 180 */ 181 dev->current_ctx = ctx; 182 } 183 *out_ctx = ctx; 184 185 /* 186 * gm_as_attach will be used to attach device to process address space. 187 * Handle this case and add hnodes registered by device to process mems_allowed. 188 */ 189 for_each_node_mask(nid, dev->registered_hnodes) > 190 node_set(nid, current->mems_allowed); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3163/3163] drivers/ub/ubfi/irq.c:18:26: error: 'struct dev_msi_info' has no member named 'domain'
by kernel test robot 13 Nov '25

13 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: fbfb361fe93de1a562df2ace860f64c4067abfdc commit: 028a4161a77d2e15d331a13599a6f06cdd7490b6 [3163/3163] ub:ubfi: register ubc usi domain config: x86_64-buildonly-randconfig-004-20251113 (https://download.01.org/0day-ci/archive/20251113/202511130841.AMzPRIEd-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251113/202511130841.AMzPRIEd-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511130841.AMzPRIEd-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/ub/ubfi/irq.c: In function 'ub_update_msi_domain': >> drivers/ub/ubfi/irq.c:18:26: error: 'struct dev_msi_info' has no member named 'domain' 18 | domain = dev->msi.domain; | ^ vim +18 drivers/ub/ubfi/irq.c 11 12 int ub_update_msi_domain(struct device *dev, 13 enum irq_domain_bus_token bus_token) 14 { 15 struct fwnode_handle *fwnode; 16 struct irq_domain *domain; 17 > 18 domain = dev->msi.domain; 19 if (!domain) { 20 dev_err(dev, "find base irq domain failed!\n"); 21 return -ENODEV; 22 } 23 24 fwnode = domain->fwnode; 25 if (!fwnode) { 26 dev_err(dev, "find fwnode failed!\n"); 27 return -ENODEV; 28 } 29 30 domain = irq_find_matching_fwnode(fwnode, bus_token); 31 if (!domain) { 32 dev_err(dev, "find irq domain failed!\n"); 33 return -ENODEV; 34 } 35 36 /* Update msi domain with new bus_token */ 37 dev_set_msi_domain(dev, domain); 38 39 return 0; 40 } 41 EXPORT_SYMBOL_GPL(ub_update_msi_domain); 42 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3135/3135] mm/gmem_phys.c:245:19: warning: no previous prototype for function 'gm_evict_page_locked'
by kernel test robot 13 Nov '25

13 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: fbfb361fe93de1a562df2ace860f64c4067abfdc commit: 8f4f66a9d851f366942e8ee319292e41ad2baa95 [3135/3135] gmem: support swapping heterogeneous memory config: arm64-randconfig-001-20251112 (https://download.01.org/0day-ci/archive/20251113/202511130834.0qWsUngh-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 996639d6ebb86ff15a8c99b67f1c2e2117636ae7) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251113/202511130834.0qWsUngh-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511130834.0qWsUngh-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:33:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 33 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_ADDRESS__ 1 | ^ >> mm/gmem_phys.c:245:19: warning: no previous prototype for function 'gm_evict_page_locked' [-Wmissing-prototypes] 245 | enum gm_evict_ret gm_evict_page_locked(struct gm_page *gm_page) | ^ mm/gmem_phys.c:245:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 245 | enum gm_evict_ret gm_evict_page_locked(struct gm_page *gm_page) | ^ | static >> mm/gmem_phys.c:345:19: warning: no previous prototype for function 'gm_evict_page' [-Wmissing-prototypes] 345 | enum gm_evict_ret gm_evict_page(struct gm_page *gm_page) | ^ mm/gmem_phys.c:345:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 345 | enum gm_evict_ret gm_evict_page(struct gm_page *gm_page) | ^ | static 3 warnings generated. vim +/gm_evict_page_locked +245 mm/gmem_phys.c 244 > 245 enum gm_evict_ret gm_evict_page_locked(struct gm_page *gm_page) 246 { 247 struct gm_dev *gm_dev; 248 struct gm_mapping *gm_mapping; 249 struct vm_area_struct *vma; 250 struct mm_struct *mm; 251 struct page *page; 252 struct device *dma_dev; 253 unsigned long va; 254 struct folio *folio = NULL; 255 struct gm_fault_t gmf = { 256 .size = HPAGE_SIZE, 257 .copy = true 258 }; 259 enum gm_evict_ret ret = GM_EVICT_SUCCESS; 260 enum gm_ret gm_ret; 261 262 gm_dev = get_gm_dev(gm_page->hnid); 263 if (!gm_dev) 264 return GM_EVICT_DEVERR; 265 266 spin_lock(&gm_page->rmap_lock); 267 if (!gm_page->mm) { 268 /* Evicting gm_page conflicts with unmap.*/ 269 ret = GM_EVICT_UNMAP; 270 goto rmap_unlock; 271 } 272 273 mm = gm_page->mm; 274 va = gm_page->va; 275 vma = find_vma(mm, va); 276 if (!vma || !vma->vm_obj) { 277 gmem_err("%s: cannot find vma or vma->vm_obj is null for va %lx", __func__, va); 278 ret = GM_EVICT_UNMAP; 279 goto rmap_unlock; 280 } 281 282 gm_mapping = vm_object_lookup(vma->vm_obj, va); 283 if (!gm_mapping) { 284 gmem_err("%s: no gm_mapping for va %lx", __func__, va); 285 ret = GM_EVICT_UNMAP; 286 goto rmap_unlock; 287 } 288 289 spin_unlock(&gm_page->rmap_lock); 290 291 mutex_lock(&gm_mapping->lock); 292 if (!gm_mapping_device(gm_mapping)) { 293 /* Evicting gm_page conflicts with unmap.*/ 294 ret = GM_EVICT_UNMAP; 295 goto gm_mapping_unlock; 296 } 297 298 if (gm_mapping->gm_page != gm_page) { 299 /* gm_mapping maps to another gm_page. */ 300 ret = GM_EVICT_UNMAP; 301 goto gm_mapping_unlock; 302 } 303 304 folio = vma_alloc_folio(GFP_TRANSHUGE, HPAGE_PMD_ORDER, vma, va, true); 305 if (!folio) { 306 gmem_err("%s: allocate host page failed.", __func__); 307 ret = GM_EVICT_FALLBACK; 308 goto gm_mapping_unlock; 309 } 310 page = &folio->page; 311 312 gmf.mm = mm; 313 gmf.va = va; 314 gmf.dev = gm_dev; 315 gmf.pfn = gm_page->dev_pfn; 316 dma_dev = gm_dev->dma_dev; 317 gmf.dma_addr = dma_map_page(dma_dev, page, 0, HPAGE_SIZE, DMA_BIDIRECTIONAL); 318 if (dma_mapping_error(dma_dev, gmf.dma_addr)) { 319 gmem_err("%s: dma map failed.", __func__); 320 ret = GM_EVICT_FALLBACK; 321 goto gm_mapping_unlock; 322 } 323 324 gm_ret = gm_dev->mmu->peer_unmap(&gmf); 325 if (gm_ret != GM_RET_SUCCESS) { 326 gmem_err("%s: peer_unmap failed.", __func__); 327 ret = GM_EVICT_DEVERR; 328 goto dma_unmap; 329 } 330 331 gm_mapping_flags_set(gm_mapping, GM_MAPPING_CPU); 332 gm_page_remove_rmap(gm_page); 333 gm_mapping->page = page; 334 put_gm_page(gm_page); 335 dma_unmap: 336 dma_unmap_page(dma_dev, gmf.dma_addr, HPAGE_SIZE, DMA_BIDIRECTIONAL); 337 gm_mapping_unlock: 338 mutex_unlock(&gm_mapping->lock); 339 return ret; 340 rmap_unlock: 341 spin_unlock(&gm_page->rmap_lock); 342 return ret; 343 } 344 > 345 enum gm_evict_ret gm_evict_page(struct gm_page *gm_page) 346 { 347 struct mm_struct *mm = gm_page->mm; 348 enum gm_evict_ret ret; 349 350 mmap_read_lock(mm); 351 ret = gm_evict_page_locked(gm_page); 352 mmap_read_unlock(mm); 353 return ret; 354 } 355 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10 0/4] Backport kunpeng920G to OLK-5.10
by Lin Yujun 13 Nov '25

13 Nov '25

Cong Wang (1): iommu: avoid taking iova_rbtree_lock twice Xiang Chen (3): iommu/arm-smmu-v3: Add a check to avoid invalid iotlb sync dma-mapping: benchmark: Add support for multi-pages map/unmap iommu/iova: Put free_iova_mem() outside of spinlock iova_rbtree_lock drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 3 +++ drivers/iommu/iova.c | 24 ++++++++++++------- kernel/dma/map_benchmark.c | 21 ++++++++++------ .../testing/selftests/dma/dma_map_benchmark.c | 20 ++++++++++++---- 4 files changed, 49 insertions(+), 19 deletions(-) -- 2.34.1

2 5

[PATCH OLK-6.6 0/3] wakeup kswapd during node_reclaim
by Wupeng Ma 13 Nov '25

13 Nov '25

wakeup kswapd during node_reclaim and add new bits for zone recalim to enable this kind of swap. Wupeng Ma (3): arm64: support node_reclaim_distance adjust for arch mm: vmscan: wakeup kswapd during node_reclaim mm: node_reclaim: add wakeup kswapd mode Documentation/admin-guide/sysctl/vm.rst | 1 + arch/arm64/mm/init.c | 20 ++++++++++++++++++++ include/linux/swap.h | 3 ++- include/uapi/linux/mempolicy.h | 1 + mm/internal.h | 5 +++-- mm/page_alloc.c | 3 ++- mm/vmscan.c | 7 ++++++- 7 files changed, 35 insertions(+), 5 deletions(-) -- 2.43.0

2 4

[PATCH OLK-6.6 00/14] mm: add huge pfnmap support for remap_pfn_range()
by Yin Tirui 12 Nov '25

12 Nov '25

Overview ======== This patch series adds huge page support for remap_pfn_range(), automatically creating huge mappings when prerequisites are satisfied (size, alignment, architecture support, etc.) and falling back to normal page mappings otherwise. This work builds on Peter Xu's previous efforts on huge pfnmap support [0]. TODO ==== - Add PUD-level huge page support. Currently, only PMD-level huge pages are supported. - Consider the logic related to vmap_page_range and extract reusable common code. Tests Done ========== - Cross-build tests. - Performance tests with custom device driver implementing mmap() with remap_pfn_range(): - lat_mem_rd benchmark modified to use mmap(device_fd) instead of malloc() shows around 40% improvement in memory access latency with huge page support compared to normal page mappings. numactl -C 0 lat_mem_rd -t 4096M (stride=64) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 64.00 148.858 ns 100.780 ns 32.3% 128.00 164.745 ns 103.537 ns 37.2% 256.00 169.907 ns 103.179 ns 39.3% 512.00 171.285 ns 103.072 ns 39.8% 1024.00 173.054 ns 103.055 ns 40.4% 2048.00 172.820 ns 103.091 ns 40.3% 4096.00 172.877 ns 103.115 ns 40.4% - Custom memory copy operations on mmap(device_fd) show around 18% performance improvement with huge page support compared to normal page mappings. numactl -C 0 memcpy_test (memory copy performance test) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 1024.00 95.76 ms 77.91 ms 18.6% 2048.00 190.87 ms 155.64 ms 18.5% 4096.00 380.84 ms 311.45 ms 18.2% [0] https://lore.kernel.org/all/20240826204353.2228736-2-peterx@redhat.com/T/#u David Hildenbrand (1): mm/huge_memory: check pmd_special() only after pmd_present() Peter Xu (11): mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud mm: drop is_huge_zero_pud() mm: mark special bits for huge pfn mappings when inject mm: allow THP orders for PFNMAPs mm/gup: detect huge pfnmap entries in gup-fast mm/pagewalk: check pfnmap for folio_walk_start() mm/fork: accept huge pfnmap entries mm: always define pxx_pgprot() mm/x86: support large pfn mappings mm/arm64: support large pfn mappings arm64: mm: Drop dead code for pud special bit handling Yin Tirui (2): pgtable: add pte_clrhuge() implementation for arm64 mm: introduce remap_pfn_range_try_pmd() for PMD-level hugepage mapping arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 39 ++++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 2 +- arch/powerpc/include/asm/pgtable.h | 1 + arch/s390/include/asm/pgtable.h | 1 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/x86/Kconfig | 1 + arch/x86/include/asm/pgtable.h | 81 +++++++----- fs/dax.c | 2 +- include/linux/huge_mm.h | 16 +-- include/linux/mm.h | 26 ++++ include/linux/pgtable.h | 20 ++- mm/Kconfig | 13 ++ mm/gup.c | 6 + mm/huge_memory.c | 93 ++++++++++---- mm/memory.c | 126 +++++++++++++++---- 16 files changed, 333 insertions(+), 96 deletions(-) -- 2.43.0

2 15

[PATCH OLK-6.6 v7 00/10] Add xcall 2.0 support
by Jinjie Ruan 12 Nov '25

12 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Changes in v7: - Fix alternative bug in sync ventry. - Add "xcall" limit for xcall2.0 and hardware xcall. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Changes in v2: - Remove duplicates or unnecessary ~300 LOC, such as link_slot, init_task. - Fix kabi. - Some cleanups. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads Yuntao Liu (1): xcall2.0: Intruduce xcall2.0 prefetch kernel module arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 ++++---- arch/arm64/kernel/cpufeature.c | 79 +++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 390 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 139 ++++++-- arch/arm64/kernel/xcall/proc.c | 226 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 66 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 90 +++++ drivers/staging/xcall/prefetch.c | 265 ++++++++++++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 29 files changed, 1465 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 drivers/staging/xcall/prefetch.c create mode 100644 include/linux/xcall.h -- 2.34.1

2 11

[PATCH OLK-6.6 v7 00/10] Add xcall 2.0 support
by Jinjie Ruan 12 Nov '25

12 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Changes in v7: - Fix alternative bug in sync ventry. - Add "xcall" limit for xcall2.0. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Changes in v2: - Remove duplicates or unnecessary ~300 LOC, such as link_slot, init_task. - Fix kabi. - Some cleanups. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads Yuntao Liu (1): xcall2.0: Intruduce xcall2.0 prefetch kernel module arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 ++++---- arch/arm64/kernel/cpufeature.c | 76 ++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 390 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 139 ++++++-- arch/arm64/kernel/xcall/proc.c | 226 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 66 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 90 +++++ drivers/staging/xcall/prefetch.c | 265 ++++++++++++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 29 files changed, 1462 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 drivers/staging/xcall/prefetch.c create mode 100644 include/linux/xcall.h -- 2.34.1

2 11

[PATCH OLK-6.6] mm/thp: Add a new sysfs knob for zero COW
by Zhang Qilong 12 Nov '25

12 Nov '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ID65ME ---------------------------------------- Add zero_page_full_cow sysfs knob for zero hugepage, and the value is '0' by default. When it's enabled, kernel will try to allocate PMD page for PMD-mappable zero anonymous mapping on WP mode. Signed-off-by: Zhang Qilong <zhangqilong3(a)huawei.com> --- Documentation/admin-guide/mm/transhuge.rst | 7 +++++++ include/linux/huge_mm.h | 1 + mm/huge_memory.c | 21 +++++++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst index 70176fc3f94c..55f4ede1f8f8 100644 --- a/Documentation/admin-guide/mm/transhuge.rst +++ b/Documentation/admin-guide/mm/transhuge.rst @@ -201,10 +201,17 @@ page fault to anonymous mapping. It's possible to disable huge zero page by writing 0 or enable it back by writing 1:: echo 0 >/sys/kernel/mm/transparent_hugepage/use_zero_page echo 1 >/sys/kernel/mm/transparent_hugepage/use_zero_page +By default kernel disable zero page full CoW. When it's enabled, kernel +will try to allocate PMD page for PMD-mappable zero anonymous mapping on +WP mode. We can enable it by writing 1 or disable it back by writing 0:: + + echo 0 >/sys/kernel/mm/transparent_hugepage/zero_page_full_cow + echo 1 >/sys/kernel/mm/transparent_hugepage/zero_page_full_cow + Some userspace (such as a test program, or an optimized memory allocation library) may want to know the size (in bytes) of a PMD-mappable transparent hugepage:: cat /sys/kernel/mm/transparent_hugepage/hpage_pmd_size diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index cfe42c43b55b..47a6634e74c4 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -55,10 +55,11 @@ enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FILE_EXEC_THP_FLAG, TRANSPARENT_HUGEPAGE_FILE_EXEC_MTHP_FLAG, TRANSPARENT_HUGEPAGE_FILE_MAPPING_ALIGN_FLAG, TRANSPARENT_HUGEPAGE_ANON_MAPPING_ALIGN_FLAG, TRANSPARENT_HUGEPAGE_ANON_MAPPING_PMD_ALIGN_FLAG, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG, }; struct kobject; struct kobj_attribute; diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a28dda799978..11162cf63f44 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -601,10 +601,26 @@ static ssize_t thp_mapping_align_store(struct kobject *kobj, return count; } static struct kobj_attribute thp_mapping_align_attr = __ATTR_RW(thp_mapping_align); +static ssize_t zero_page_full_cow_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return single_hugepage_flag_show(kobj, attr, buf, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG); +} +static ssize_t zero_page_full_cow_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + return single_hugepage_flag_store(kobj, attr, buf, count, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG); +} + +static struct kobj_attribute zero_page_full_cow_attr = + __ATTR_RW(zero_page_full_cow); + static struct attribute *hugepage_attr[] = { &enabled_attr.attr, &defrag_attr.attr, &use_zero_page_attr.attr, &pcp_allow_high_order_attr.attr, @@ -613,10 +629,11 @@ static struct attribute *hugepage_attr[] = { &shmem_enabled_attr.attr, #endif &file_enabled_attr.attr, &thp_exec_enabled_attr.attr, &thp_mapping_align_attr.attr, + &zero_page_full_cow_attr.attr, NULL, }; static const struct attribute_group hugepage_attr_group = { .attrs = hugepage_attr, @@ -2012,10 +2029,14 @@ static vm_fault_t do_huge_zero_wp_pmd(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; struct folio *folio; vm_fault_t ret = 0; + if (!test_bit(TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG, + &transparent_hugepage_flags)) + return VM_FAULT_FALLBACK; + folio = vma_alloc_anon_folio_pmd(vma, vmf->address); if (unlikely(!folio)) return VM_FAULT_FALLBACK; mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma->vm_mm, haddr, -- 2.43.0

2 1

[PATCH OLK-6.6 00/14] mm: add huge pfnmap support for remap_pfn_range()
by Yin Tirui 12 Nov '25

12 Nov '25

Overview ======== This patch series adds huge page support for remap_pfn_range(), automatically creating huge mappings when prerequisites are satisfied (size, alignment, architecture support, etc.) and falling back to normal page mappings otherwise. This work builds on Peter Xu's previous efforts on huge pfnmap support [0]. TODO ==== - Add PUD-level huge page support. Currently, only PMD-level huge pages are supported. - Consider the logic related to vmap_page_range and extract reusable common code. Tests Done ========== - Cross-build tests. - Performance tests with custom device driver implementing mmap() with remap_pfn_range(): - lat_mem_rd benchmark modified to use mmap(device_fd) instead of malloc() shows around 40% improvement in memory access latency with huge page support compared to normal page mappings. numactl -C 0 lat_mem_rd -t 4096M (stride=64) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 64.00 148.858 ns 100.780 ns 32.3% 128.00 164.745 ns 103.537 ns 37.2% 256.00 169.907 ns 103.179 ns 39.3% 512.00 171.285 ns 103.072 ns 39.8% 1024.00 173.054 ns 103.055 ns 40.4% 2048.00 172.820 ns 103.091 ns 40.3% 4096.00 172.877 ns 103.115 ns 40.4% - Custom memory copy operations on mmap(device_fd) show around 18% performance improvement with huge page support compared to normal page mappings. numactl -C 0 memcpy_test (memory copy performance test) Memory Size (MB) Without Huge Mapping With Huge Mapping Improvement ---------------- ----------------- -------------- ----------- 1024.00 95.76 ms 77.91 ms 18.6% 2048.00 190.87 ms 155.64 ms 18.5% 4096.00 380.84 ms 311.45 ms 18.2% [0] https://lore.kernel.org/all/20240826204353.2228736-2-peterx@redhat.com/T/#u David Hildenbrand (1): mm/huge_memory: check pmd_special() only after pmd_present() Peter Xu (11): mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud mm: drop is_huge_zero_pud() mm: mark special bits for huge pfn mappings when inject mm: allow THP orders for PFNMAPs mm/gup: detect huge pfnmap entries in gup-fast mm/pagewalk: check pfnmap for folio_walk_start() mm/fork: accept huge pfnmap entries mm: always define pxx_pgprot() mm/x86: support large pfn mappings mm/arm64: support large pfn mappings arm64: mm: Drop dead code for pud special bit handling Yin Tirui (2): pgtable: add pte_clrhuge() implementation for arm64 mm: introduce remap_pfn_range_try_pmd() for PMD-level hugepage mapping arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 39 ++++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 2 +- arch/powerpc/include/asm/pgtable.h | 1 + arch/s390/include/asm/pgtable.h | 1 + arch/sparc/include/asm/pgtable_64.h | 1 + arch/x86/Kconfig | 1 + arch/x86/include/asm/pgtable.h | 81 +++++++----- fs/dax.c | 2 +- include/linux/huge_mm.h | 16 +-- include/linux/mm.h | 26 ++++ include/linux/pgtable.h | 20 ++- mm/Kconfig | 13 ++ mm/gup.c | 6 + mm/huge_memory.c | 93 ++++++++++---- mm/memory.c | 126 +++++++++++++++---- 16 files changed, 333 insertions(+), 96 deletions(-) -- 2.43.0

2 15

[openeuler:OLK-5.10 3282/3282] mm/memcontrol.c:5402:26: error: implicit declaration of function 'ksm_process_profit'
by kernel test robot 12 Nov '25

12 Nov '25

Hi Nanyong, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 36c423f81858a53a2f8b9ac653a4ee48a6b4a3ae commit: 0f6fb3570be40b783d8c756d64297be1a8e3d2b3 [3282/3282] memcg: support ksm merge any mode per cgroup config: x86_64-buildonly-randconfig-004-20251112 (https://download.01.org/0day-ci/archive/20251112/202511121630.TEi1Z7Hc-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251112/202511121630.TEi1Z7Hc-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511121630.TEi1Z7Hc-lkp@intel.com/ All errors (new ones prefixed by >>): >> mm/memcontrol.c:5402:26: error: implicit declaration of function 'ksm_process_profit' [-Werror,-Wimplicit-function-declaration] 5402 | ksm_process_profits += ksm_process_profit(mm); | ^ 1 error generated. vim +/ksm_process_profit +5402 mm/memcontrol.c 5379 5380 static int memory_ksm_show(struct seq_file *m, void *v) 5381 { 5382 unsigned long ksm_merging_pages = 0; 5383 unsigned long ksm_rmap_items = 0; 5384 long ksm_process_profits = 0; 5385 unsigned int tasks = 0; 5386 struct task_struct *task; 5387 struct mm_struct *mm; 5388 struct css_task_iter it; 5389 struct mem_cgroup *memcg = mem_cgroup_from_seq(m); 5390 5391 css_task_iter_start(&memcg->css, CSS_TASK_ITER_PROCS, &it); 5392 while ((task = css_task_iter_next(&it))) { 5393 mm = get_task_mm(task); 5394 if (!mm) 5395 continue; 5396 5397 if (test_bit(MMF_VM_MERGE_ANY, &mm->flags)) 5398 tasks++; 5399 5400 ksm_rmap_items += mm->ksm_rmap_items; 5401 ksm_merging_pages += mm->ksm_merging_pages; > 5402 ksm_process_profits += ksm_process_profit(mm); 5403 mmput(mm); 5404 } 5405 css_task_iter_end(&it); 5406 5407 seq_printf(m, "merge any state: %d\n", READ_ONCE(memcg->ksm_merge_any)); 5408 seq_printf(m, "merge any tasks: %u\n", tasks); 5409 seq_printf(m, "ksm_rmap_items %lu\n", ksm_rmap_items); 5410 seq_printf(m, "ksm_merging_pages %lu\n", ksm_merging_pages); 5411 seq_printf(m, "ksm_process_profits %ld\n", ksm_process_profits); 5412 return 0; 5413 } 5414 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6] mm: add nr_free_highatomic in show_free_areas
by Jinjiang Tu 12 Nov '25

12 Nov '25

From: gaoxu <gaoxu2(a)honor.com> mainline inclusion from mainline-v6.16-rc1 commit 4f219913c1368a372b07832451cb86ea3a1df31c category: other bugzilla: https://gitee.com/openeuler/kernel/issues/ID65M0 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit c928807f6f6b6("mm/page_alloc: keep track of free highatomic") adds a new variable nr_free_highatomic, which is useful for analyzing low mem issues. add nr_free_highatomic in show_free_areas. Signed-off-by: gao xu <gaoxu2(a)honor.com> Link: https://lkml.kernel.org/r/d92eeff74f7a4578a14ac777cfe3603a@honor.com Acked-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Barry Song <baohua(a)kernel.org> Acked-by: David Rientjes <rientjes(a)google.com> Reviewed-by: Anshuman Khandual <anshuman.khandual(a)arm.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Yu Zhao <yuzhao(a)google.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Jinjiang Tu <tujinjiang(a)huawei.com> --- mm/show_mem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/show_mem.c b/mm/show_mem.c index a5608c697d15..23cb66ac712c 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -314,6 +314,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z " low:%lukB" " high:%lukB" " reserved_highatomic:%luKB" + " free_highatomic:%luKB" " active_anon:%lukB" " inactive_anon:%lukB" " active_file:%lukB" @@ -335,6 +336,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z K(low_wmark_pages(zone)), K(high_wmark_pages(zone)), K(zone->nr_reserved_highatomic), + K(zone->nr_free_highatomic), K(zone_page_state(zone, NR_ZONE_ACTIVE_ANON)), K(zone_page_state(zone, NR_ZONE_INACTIVE_ANON)), K(zone_page_state(zone, NR_ZONE_ACTIVE_FILE)), -- 2.43.0

2 1

[PATCH OLK-6.6] arm64/mpam: Add quirk to shrink MATA PMG range
by Zeng Heng 12 Nov '25

12 Nov '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID65P3 -------------------------------- On certain specific chip platforms, the PMG function is not fully supported. Using a non-zero PMG as a monitoring resource can lead to the loss of write traffic statistics. Therefore, impose restrictions on the PMG usage range for such chips. Fixes: 9cb26074545b ("arm_mpam: Probe MSCs to find the supported partid/pmg values") Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/platform/mpam/mpam_devices.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/platform/mpam/mpam_devices.c b/drivers/platform/mpam/mpam_devices.c index ebc8887d8267..287a752724a9 100644 --- a/drivers/platform/mpam/mpam_devices.c +++ b/drivers/platform/mpam/mpam_devices.c @@ -745,6 +745,19 @@ static void mpam_ris_hw_probe(struct mpam_msc_ris *ris) } } +static int mpam_pmg_max_hisi_workaround(struct mpam_msc *msc) +{ + static const struct midr_range cpus[] = { + MIDR_ALL_VERSIONS(MIDR_HISI_HIP12), + { /* sentinel */ } + }; + + if (!is_midr_in_range_list(cpus)) + return msc->pmg_max; + + return 0; +} + static int mpam_msc_hw_probe(struct mpam_msc *msc) { u64 idr; @@ -771,6 +784,7 @@ static int mpam_msc_hw_probe(struct mpam_msc *msc) /* Use these values so partid/pmg always starts with a valid value */ msc->partid_max = FIELD_GET(MPAMF_IDR_PARTID_MAX, idr); msc->pmg_max = FIELD_GET(MPAMF_IDR_PMG_MAX, idr); + msc->pmg_max = mpam_pmg_max_hisi_workaround(msc); for (ris_idx = 0; ris_idx <= msc->ris_max; ris_idx++) { spin_lock(&msc->part_sel_lock); -- 2.25.1

2 1

[PATCH OLK-6.6 v6 00/10] Add xcall 2.0 support
by Jinjie Ruan 12 Nov '25

12 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Changes in v2: - Remove duplicates or unnecessary ~300 LOC, such as link_slot, init_task. - Fix kabi. - Some cleanups. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads Yuntao Liu (1): xcall2.0: Intruduce xcall2.0 prefetch kernel module arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 +++++---- arch/arm64/kernel/cpufeature.c | 76 ++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 384 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 180 ++++++++-- arch/arm64/kernel/xcall/proc.c | 223 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 66 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 90 +++++ drivers/staging/xcall/prefetch.c | 265 ++++++++++++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 29 files changed, 1494 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 drivers/staging/xcall/prefetch.c create mode 100644 include/linux/xcall.h -- 2.34.1

2 11

[openeuler:OLK-6.6 3135/3135] mm/gmem.c:286:13: warning: no previous prototype for function 'gm_dev_fault'
by kernel test robot 12 Nov '25

12 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 60e792f234ac2bde55a826388fb644bede86a012 commit: 4e04912a6c73df8a7185e0f4406d8a39daa027a3 [3135/3135] gmem: implement page faulting for peer-shared vma config: arm64-randconfig-001-20251112 (https://download.01.org/0day-ci/archive/20251112/202511121239.TQKV2Lm3-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 996639d6ebb86ff15a8c99b67f1c2e2117636ae7) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251112/202511121239.TQKV2Lm3-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511121239.TQKV2Lm3-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:33:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 33 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_ADDRESS__ 1 | ^ >> mm/gmem.c:286:13: warning: no previous prototype for function 'gm_dev_fault' [-Wmissing-prototypes] 286 | enum gm_ret gm_dev_fault(struct mm_struct *mm, unsigned long addr, | ^ mm/gmem.c:286:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 286 | enum gm_ret gm_dev_fault(struct mm_struct *mm, unsigned long addr, | ^ | static 2 warnings generated. vim +/gm_dev_fault +286 mm/gmem.c 285 > 286 enum gm_ret gm_dev_fault(struct mm_struct *mm, unsigned long addr, 287 struct gm_dev *dev, int behavior) 288 { 289 int ret; 290 291 mmap_read_lock(mm); 292 ret = gm_dev_fault_locked(mm, addr, dev, behavior); 293 mmap_read_unlock(mm); 294 295 return ret; 296 } 297 EXPORT_SYMBOL_GPL(gm_dev_fault); 298 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 v6 00/10] Add xcall 2.0 support
by Jinjie Ruan 12 Nov '25

12 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Changes in v2: - Remove duplicates or unnecessary ~300 LOC, such as link_slot, init_task. - Fix kabi. - Some cleanups. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads Yuntao Liu (1): xcall2.0: Intruduce xcall2.0 prefetch kernel module arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 +++++---- arch/arm64/kernel/cpufeature.c | 76 ++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 384 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 180 ++++++++-- arch/arm64/kernel/xcall/proc.c | 223 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 66 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 90 +++++ drivers/staging/xcall/prefetch.c | 265 ++++++++++++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 29 files changed, 1494 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 drivers/staging/xcall/prefetch.c create mode 100644 include/linux/xcall.h -- 2.34.1

2 11

[PATCH v2 openEuler-23.09 0/2] XSCHED SUPPORT KO MODE
by Liu Kai 12 Nov '25

12 Nov '25

XSCHED SUPPORT KO MODE Liu Kai (2): xsched ko: xsched support ko mode xsched ko: adapt 910b npu driver for xsched ko ...01-Adapt-910b-npu-driver-for-xsched-ko.txt | 535 ++++++++++++++ drivers/xsched/Makefile | 71 ++ drivers/xsched/hal/syms_lookup.c | 52 ++ drivers/xsched/hal/xcu_group.c | 237 ++++++ drivers/xsched/hal/xsched_npu_interface.c | 383 ++++++++++ drivers/xsched/include/syms_lookup.h | 20 + drivers/xsched/include/vstream.h | 87 +++ drivers/xsched/include/xcu_group.h | 113 +++ drivers/xsched/include/xsched.h | 349 +++++++++ drivers/xsched/include/xsched_ioctl.h | 60 ++ drivers/xsched/include/xsched_npu_interface.h | 118 +++ drivers/xsched/xsched/core.c | 681 ++++++++++++++++++ drivers/xsched/xsched/rt.c | 459 ++++++++++++ drivers/xsched/xsched/xsched.c | 272 +++++++ drivers/xsched/xsched/xsched_ioctl.c | 479 ++++++++++++ 15 files changed, 3916 insertions(+) create mode 100644 drivers/xsched/0001-Adapt-910b-npu-driver-for-xsched-ko.txt create mode 100644 drivers/xsched/Makefile create mode 100644 drivers/xsched/hal/syms_lookup.c create mode 100644 drivers/xsched/hal/xcu_group.c create mode 100644 drivers/xsched/hal/xsched_npu_interface.c create mode 100644 drivers/xsched/include/syms_lookup.h create mode 100644 drivers/xsched/include/vstream.h create mode 100644 drivers/xsched/include/xcu_group.h create mode 100644 drivers/xsched/include/xsched.h create mode 100644 drivers/xsched/include/xsched_ioctl.h create mode 100644 drivers/xsched/include/xsched_npu_interface.h create mode 100644 drivers/xsched/xsched/core.c create mode 100644 drivers/xsched/xsched/rt.c create mode 100644 drivers/xsched/xsched/xsched.c create mode 100644 drivers/xsched/xsched/xsched_ioctl.c -- 2.34.1

2 3

[openeuler:OLK-6.6 3135/3135] mm/gmem.c:190:26: error: 'struct task_struct' has no member named 'mems_allowed'; did you mean 'nr_cpus_allowed'?
by kernel test robot 12 Nov '25

12 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 70ffcfd5ec3049df518d1359b0189b4dd16e0e56 commit: 380709c322aaa306b5ac3c278a0700043f7d33e2 [3135/3135] gmem: prepare config, boot parameter, vma flag and basic GMEM related structs config: arm64-randconfig-003-20251112 (https://download.01.org/0day-ci/archive/20251112/202511120955.BR23qSft-lkp@…) compiler: aarch64-linux-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251112/202511120955.BR23qSft-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511120955.BR23qSft-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/linux/gmem.h:15:0, from mm/gmem.c:10: mm/gmem.c: In function 'gm_as_attach': >> mm/gmem.c:190:26: error: 'struct task_struct' has no member named 'mems_allowed'; did you mean 'nr_cpus_allowed'? node_set(nid, current->mems_allowed); ^ include/linux/nodemask.h:128:50: note: in definition of macro 'node_set' #define node_set(node, dst) __node_set((node), &(dst)) ^~~ vim +190 mm/gmem.c 144 145 int gm_as_attach(struct gm_as *as, struct gm_dev *dev, 146 bool activate, struct gm_context **out_ctx) 147 { 148 struct gm_context *ctx; 149 int nid; 150 151 ctx = kmem_cache_alloc(gm_ctx_cache, GFP_KERNEL); 152 if (!ctx) 153 return -ENOMEM; 154 155 ctx->as = as; 156 ctx->dev = dev; 157 158 INIT_LIST_HEAD(&ctx->gm_dev_link); 159 INIT_LIST_HEAD(&ctx->gm_as_link); 160 161 if (!list_empty(&as->gm_ctx_list)) { 162 struct list_head *old_node; 163 struct gm_context *old_ctx; 164 165 old_node = as->gm_ctx_list.prev; 166 list_del_init(old_node); 167 old_ctx = list_entry(old_node, struct gm_context, gm_as_link); 168 kfree(old_ctx); 169 } 170 171 list_add_tail(&dev->gm_ctx_list, &ctx->gm_dev_link); 172 list_add_tail(&ctx->gm_as_link, &as->gm_ctx_list); 173 174 if (activate) { 175 /* 176 * Here we should really have a callback function to perform the context switch 177 * for the hardware. E.g. in x86 this function is effectively 178 * flushing the CR3 value. Currently we do not care time-sliced context switch, 179 * unless someone wants to support it. 180 */ 181 dev->current_ctx = ctx; 182 } 183 *out_ctx = ctx; 184 185 /* 186 * gm_as_attach will be used to attach device to process address space. 187 * Handle this case and add hnodes registered by device to process mems_allowed. 188 */ 189 for_each_node_mask(nid, dev->registered_hnodes) > 190 node_set(nid, current->mems_allowed); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6] mm/huge_memory: Add zero_page_full_cow sysfs node and disable it by default
by Zhang Qilong 12 Nov '25

12 Nov '25

Offering: HULK hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ID65ME ---------------------------------------- Add a zero_page_full_cow sysfs node, the zero page full CoW could be enable by write 1 to zero_page_full_cow. Signed-off-by: Zhang Qilong <zhangqilong3(a)huawei.com> --- Documentation/admin-guide/mm/transhuge.rst | 8 ++++++++ include/linux/huge_mm.h | 1 + mm/huge_memory.c | 21 +++++++++++++++++++++ 3 files changed, 30 insertions(+) diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst index 70176fc3f94c..0c80f5948f10 100644 --- a/Documentation/admin-guide/mm/transhuge.rst +++ b/Documentation/admin-guide/mm/transhuge.rst @@ -201,10 +201,18 @@ page fault to anonymous mapping. It's possible to disable huge zero page by writing 0 or enable it back by writing 1:: echo 0 >/sys/kernel/mm/transparent_hugepage/use_zero_page echo 1 >/sys/kernel/mm/transparent_hugepage/use_zero_page +By default kernel enable zero page full CoW. When it's enabled, kernel +will try to allocate PMD page for PMD-mappable zero anonymous mapping +on WP mode. It's possible to disable huge zero page by writing 0 or +enable it back by writing 1:: + + echo 0 >/sys/kernel/mm/transparent_hugepage/zero_page_full_cow + echo 1 >/sys/kernel/mm/transparent_hugepage/zero_page_full_cow + Some userspace (such as a test program, or an optimized memory allocation library) may want to know the size (in bytes) of a PMD-mappable transparent hugepage:: cat /sys/kernel/mm/transparent_hugepage/hpage_pmd_size diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index cfe42c43b55b..47a6634e74c4 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -55,10 +55,11 @@ enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FILE_EXEC_THP_FLAG, TRANSPARENT_HUGEPAGE_FILE_EXEC_MTHP_FLAG, TRANSPARENT_HUGEPAGE_FILE_MAPPING_ALIGN_FLAG, TRANSPARENT_HUGEPAGE_ANON_MAPPING_ALIGN_FLAG, TRANSPARENT_HUGEPAGE_ANON_MAPPING_PMD_ALIGN_FLAG, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG, }; struct kobject; struct kobj_attribute; diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a28dda799978..11162cf63f44 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -601,10 +601,26 @@ static ssize_t thp_mapping_align_store(struct kobject *kobj, return count; } static struct kobj_attribute thp_mapping_align_attr = __ATTR_RW(thp_mapping_align); +static ssize_t zero_page_full_cow_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return single_hugepage_flag_show(kobj, attr, buf, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG); +} +static ssize_t zero_page_full_cow_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + return single_hugepage_flag_store(kobj, attr, buf, count, + TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG); +} + +static struct kobj_attribute zero_page_full_cow_attr = + __ATTR_RW(zero_page_full_cow); + static struct attribute *hugepage_attr[] = { &enabled_attr.attr, &defrag_attr.attr, &use_zero_page_attr.attr, &pcp_allow_high_order_attr.attr, @@ -613,10 +629,11 @@ static struct attribute *hugepage_attr[] = { &shmem_enabled_attr.attr, #endif &file_enabled_attr.attr, &thp_exec_enabled_attr.attr, &thp_mapping_align_attr.attr, + &zero_page_full_cow_attr.attr, NULL, }; static const struct attribute_group hugepage_attr_group = { .attrs = hugepage_attr, @@ -2012,10 +2029,14 @@ static vm_fault_t do_huge_zero_wp_pmd(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; struct folio *folio; vm_fault_t ret = 0; + if (!test_bit(TRANSPARENT_HUGEPAGE_ZERO_PAGE_FULL_COW_FLAG, + &transparent_hugepage_flags)) + return VM_FAULT_FALLBACK; + folio = vma_alloc_anon_folio_pmd(vma, vmf->address); if (unlikely(!folio)) return VM_FAULT_FALLBACK; mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma->vm_mm, haddr, -- 2.43.0

2 1

[openeuler:OLK-5.10 3282/3282] versioncheck: ./tools/lib/bpf/libbpf_sched.h: 19 linux/version.h not needed.
by kernel test robot 11 Nov '25

11 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 3f379e0522ce4a45939cf369c89dfcd79e5be5fe commit: b741025dc64d2c16498e2823effe5b27d779c52f [3282/3282] sched: programmable: Add lib for sched programmable reproduce: (https://download.01.org/0day-ci/archive/20251111/202511111634.AtpNZLDd-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511111634.AtpNZLDd-lkp@intel.com/ versioncheck warnings: (new ones prefixed by >>) INFO PATH=/opt/cross/clang-20/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin /usr/bin/timeout -k 100 3h /usr/bin/make KCFLAGS= -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef W=1 --keep-going LLVM=1 -j32 ARCH=x86_64 versioncheck find ./* \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o \ -name '*.[hcS]' -type f -print | sort \ | xargs perl -w ./scripts/checkversion.pl ./arch/csky/include/asm/atomic.h: 6 linux/version.h not needed. ./arch/csky/include/asm/io.h: 9 linux/version.h not needed. ./arch/csky/include/asm/thread_info.h: 9 linux/version.h not needed. ./arch/csky/include/asm/uaccess.h: 15 linux/version.h not needed. ./arch/csky/kernel/process.c: 5 linux/version.h not needed. ./arch/csky/mm/dma-mapping.c: 12 linux/version.h not needed. ./arch/csky/mm/fault.c: 16 linux/version.h not needed. ./arch/s390/include/asm/setup.h: 183: need linux/version.h ./arch/um/drivers/vector_kern.c: 11 linux/version.h not needed. ./drivers/block/rsxx/rsxx_priv.h: 14 linux/version.h not needed. ./drivers/crypto/cavium/cpt/cptpf_main.c: 13 linux/version.h not needed. ./drivers/crypto/cavium/zip/common.h: 59 linux/version.h not needed. ./drivers/crypto/ccree/cc_driver.h: 26 linux/version.h not needed. ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c: 62 linux/version.h not needed. ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c: 28 linux/version.h not needed. ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c: 26 linux/version.h not needed. ./drivers/gpu/drm/pl111/pl111_display.c: 14 linux/version.h not needed. ./drivers/gpu/drm/pl111/pl111_drv.c: 47 linux/version.h not needed. ./drivers/gpu/drm/tve200/tve200_display.c: 14 linux/version.h not needed. ./drivers/gpu/drm/tve200/tve200_drv.c: 38 linux/version.h not needed. ./drivers/hv/hv.c: 16 linux/version.h not needed. ./drivers/i2c/busses/i2c-brcmstb.c: 25 linux/version.h not needed. ./drivers/i2c/busses/i2c-xgene-slimpro.c: 22 linux/version.h not needed. ./drivers/media/pci/cx25821/cx25821.h: 31 linux/version.h not needed. ./drivers/media/platform/s3c-camif/camif-core.c: 26 linux/version.h not needed. ./drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.h: 16 linux/version.h not needed. ./drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c: 31 linux/version.h not needed. ./drivers/media/platform/sti/c8sectpfe/c8sectpfe-dvb.c: 14 linux/version.h not needed. ./drivers/media/usb/uvc/uvc_driver.c: 18 linux/version.h not needed. ./drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c: 21 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/edma_drv/bma_include.h: 32 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c: 17 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h: 20 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.c: 22 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.c: 16 linux/version.h not needed. ./drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.c: 16 linux/version.h not needed. ./drivers/net/ethernet/huawei/hinic/ossl_knl.h: 22 linux/version.h not needed. ./drivers/net/ethernet/qlogic/qede/qede.h: 10 linux/version.h not needed. ./drivers/net/ethernet/qlogic/qede/qede_ethtool.c: 7 linux/version.h not needed. ./drivers/net/ethernet/qlogic/qede/qede_main.c: 10 linux/version.h not needed. ./drivers/net/usb/lan78xx.c: 5 linux/version.h not needed. ./drivers/net/wireless/rsi/rsi_91x_ps.c: 19 linux/version.h not needed. ./drivers/scsi/cxgbi/libcxgbi.h: 27 linux/version.h not needed. ./drivers/scsi/huawei/hifc/hifc_knl_adp.h: 23 linux/version.h not needed. ./drivers/scsi/qedf/qedf.h: 15 linux/version.h not needed. ./drivers/scsi/qedf/qedf_dbg.h: 13 linux/version.h not needed. ./drivers/scsi/qedi/qedi_dbg.h: 14 linux/version.h not needed. ./drivers/scsi/spraid/spraid_main.c: 9 linux/version.h not needed. ./drivers/soc/tegra/powergate-bpmp.c: 10 linux/version.h not needed. ./drivers/staging/media/atomisp/include/linux/atomisp.h: 23 linux/version.h not needed. ./drivers/staging/rtl8723bs/include/drv_types.h: 17 linux/version.h not needed. ./drivers/staging/rtl8723bs/include/ioctl_cfg80211.h: 10 linux/version.h not needed. ./drivers/watchdog/ziirave_wdt.c: 21 linux/version.h not needed. ./fs/eulerfs/euler.h: 20 linux/version.h not needed. ./fs/eulerfs/euler_common.h: 25 linux/version.h not needed. ./fs/proc/etmem_scan.c: 13 linux/version.h not needed. ./include/linux/qed/qed_ll2_if.h: 15 linux/version.h not needed. ./kernel/bpf/syscall.c: 20 linux/version.h not needed. ./samples/bpf/sampleip_kern.c: 7 linux/version.h not needed. ./samples/bpf/trace_event_kern.c: 8 linux/version.h not needed. ./sound/soc/codecs/cs35l35.c: 12 linux/version.h not needed. ./sound/soc/codecs/cs42l42.c: 14 linux/version.h not needed. >> ./tools/lib/bpf/libbpf_sched.h: 19 linux/version.h not needed. ./tools/perf/include/bpf/bpf.h: 70: need linux/version.h ./tools/perf/tests/bpf-script-example.c: 49: need linux/version.h ./tools/perf/tests/bpf-script-test-kbuild.c: 21: need linux/version.h ./tools/perf/tests/bpf-script-test-prologue.c: 47: need linux/version.h ./tools/perf/tests/bpf-script-test-relocation.c: 51: need linux/version.h ./tools/testing/selftests/bpf/progs/test_map_lock.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_send_signal_kern.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_spin_lock.c: 4 linux/version.h not needed. ./tools/testing/selftests/bpf/progs/test_tcp_estats.c: 37 linux/version.h not needed. ./tools/testing/selftests/wireguard/qemu/init.c: 25 linux/version.h not needed. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/8] blk-ioinf: introduce inflight-based IO QoS controller
by Baokun Li 11 Nov '25

11 Nov '25

Baokun Li (8): blk-ioinf: introduce inflight-based IO QoS controller blk-ioinf: add rqos/inflight/stat debufs interface blk-ioinf: dynamically adjust inflight limit to balance workloads blk-ioinf: support percentile latency QoS for oneline workloads blk-io-hierarchy: support new bio based stage ioinf openeuler_defconfig: Enable CONFIG_BLK_CGROUP_IOINFLIGHT blk-mq: fix kabi broken in struct request blk-rq-qos: fix kabi broken in struct rq_qos arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + block/Kconfig | 10 + block/Makefile | 1 + block/blk-io-hierarchy/Kconfig | 11 + block/blk-io-hierarchy/debugfs.c | 3 + block/blk-ioinf.c | 1342 ++++++++++++++++++++++++ block/blk-mq-debugfs.c | 4 +- block/blk-rq-qos.c | 2 +- block/blk-rq-qos.h | 15 +- include/linux/blk-mq.h | 4 + include/linux/blk_types.h | 3 + 12 files changed, 1391 insertions(+), 6 deletions(-) create mode 100644 block/blk-ioinf.c -- 2.46.1

2 9

[openeuler:openEuler-1.0-LTS] BUILD REGRESSION 5727f67236364461625bc838299bb70cc49eb749
by kernel test robot 11 Nov '25

11 Nov '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 5727f67236364461625bc838299bb70cc49eb749 !18884 Revert "fbdev: Fix out-of-bounds issue in sys_fillrect()" Error/Warning (recently discovered and may have been fixed): block/blk-wbt.c:589:6: warning: no previous prototype for function 'wbt_issue' [-Wmissing-prototypes] block/blk-wbt.c:609:6: warning: no previous prototype for function 'wbt_requeue' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/amdgpu_ids.o: warning: objtool: amdgpu_vmid_grab()+0xd3e: unreachable instruction drivers/spi/spi-phytium-plat.c:192:36: warning: unused variable 'phytium_spi_acpi_match' [-Wunused-const-variable] fs/debugfs/file.o: warning: objtool: full_proxy_open()+0x55a: unreachable instruction fs/ext4/mballoc.o: warning: objtool: ext4_mb_complex_scan_group()+0x11a4: unreachable instruction include/linux/mempolicy.h:329:13: warning: '__do_mbind' defined but not used [-Wunused-function] kernel/sched/core.c:5976:22: error: use of undeclared identifier 'root_task_group'; did you mean 'task_group'? kernel/sched/debug.c:990:17: error: no member named 'nr_wakeups_preferred_cpus' in 'struct dyn_affinity_stats' kernel/sched/debug.c:991:17: error: no member named 'nr_wakeups_force_preferred_cpus' in 'struct dyn_affinity_stats' mm/early_ioremap.o: warning: objtool: missing symbol for section .text mm/hugetlb.c:1370:6: warning: no previous prototype for function 'free_huge_page_to_dhugetlb_pool' [-Wmissing-prototypes] mm/memory.c:1546:10: error: implicit declaration of function 'hugetlb_insert_hugepage_pte_by_pa'; did you mean 'hugetlb_insert__hugepage_pte_by_pa'? [-Werror=implicit-function-declaration] mm/mmu_gather.o: warning: objtool: missing symbol for section .text mm/vmscan.c:3257:21: error: implicit declaration of function 'kernel_swap_enabled' [-Werror,-Wimplicit-function-declaration] mm/vmscan.c:3257:21: error: implicit declaration of function 'kernel_swap_enabled'; did you mean 'kernfs_ns_enabled'? [-Werror=implicit-function-declaration] Unverified Error/Warning (likely false positive, kindly check if interested): arch/arm64/kernel/smp.c:164:17: sparse: sparse: incorrect type in argument 2 (different address spaces) arch/x86/platform/uv/tlb_uv.c:1674:37: warning: unused variable 'proc_uv_ptc_operations' [-Wunused-const-variable] block/bfq-cgroup.o: warning: objtool: missing symbol for section .text block/bfq-wf2q.o: warning: objtool: missing symbol for section .text block/blk-lib.o: warning: objtool: missing symbol for section .text block/blk-mq-pci.o: warning: objtool: missing symbol for section .text block/blk-mq-rdma.o: warning: objtool: missing symbol for section .text block/cmdline-parser.o: warning: objtool: missing symbol for section .text block/ioctl.o: warning: objtool: missing symbol for section .text block/partitions/check.o: warning: objtool: missing symbol for section .text block/scsi_ioctl.o: warning: objtool: missing symbol for section .text crypto/asymmetric_keys/mscode_parser.o: warning: objtool: missing symbol for section .text crypto/lrw.c:456:13: warning: conflicting types for built-in function 'free'; expected 'void(void *)' [-Wbuiltin-declaration-mismatch] crypto/lrw.c:456:13: warning: mismatch in argument 1 type of built-in function 'free'; expected 'void *' [-Wbuiltin-declaration-mismatch] crypto/xts.c:396:13: warning: conflicting types for built-in function 'free'; expected 'void(void *)' [-Wbuiltin-declaration-mismatch] crypto/xts.c:396:13: warning: mismatch in argument 1 type of built-in function 'free'; expected 'void *' [-Wbuiltin-declaration-mismatch] drivers/block/rbd.c:1442:37-38: WARNING opportunity for min() drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.o: warning: objtool: missing symbol for section .text drivers/gpu/drm/vc4/vc4_dpi.c:125:3: warning: 'dpi_regs' defined but not used [-Wunused-const-variable=] drivers/gpu/drm/vc4/vc4_txp.c:167:3: warning: 'txp_regs' defined but not used [-Wunused-const-variable=] drivers/gpu/drm/vc4/vc4_vec.c:230:3: warning: 'vec_regs' defined but not used [-Wunused-const-variable=] drivers/infiniband/sw/rxe/rxe_mr.o: warning: objtool: missing symbol for section .text.unlikely. drivers/isdn/mISDN/dsp_cmx.o: warning: objtool: missing symbol for section .text.unlikely. drivers/isdn/mISDN/dsp_hwec.o: warning: objtool: missing symbol for section .text.unlikely. drivers/media/pci/cobalt/cobalt-i2c.o: warning: objtool: missing symbol for section .text.unlikely. drivers/media/pci/cobalt/cobalt-irq.o: warning: objtool: missing symbol for section .text drivers/media/pci/cx25821/cx25821-core.o: warning: objtool: missing symbol for section .text.unlikely. drivers/media/platform/xilinx/xilinx-vip.o: warning: objtool: missing symbol for section .text drivers/misc/sgi-gru/gruprocfs.c:274:37: warning: unused variable 'statistics_fops' [-Wunused-const-variable] drivers/misc/sgi-gru/gruprocfs.c:282:37: warning: unused variable 'mcs_statistics_fops' [-Wunused-const-variable] drivers/misc/sgi-gru/gruprocfs.c:290:37: warning: unused variable 'options_fops' [-Wunused-const-variable] drivers/misc/sgi-gru/gruprocfs.o: warning: objtool: missing symbol for section .text drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c:854:5: warning: 'new_state' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/net/can/usb/peak_usb/pcan_usb_core.o: warning: objtool: missing symbol for section .text.unlikely. drivers/net/ethernet/agere/et131x.c:1310:16: warning: 'reg' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/net/ethernet/mellanox/mlx5/core/en_dim.o: warning: objtool: missing symbol for section .text drivers/net/ethernet/netronome/nfp/abm/ctrl.o: warning: objtool: missing symbol for section .text drivers/net/ethernet/netronome/nfp/nfp_app.o: warning: objtool: missing symbol for section .text drivers/net/wireless/ath/ath6kl/hif.o: warning: objtool: missing symbol for section .text drivers/net/wireless/ath/ath6kl/init.o: warning: objtool: missing symbol for section .text drivers/net/wireless/mediatek/mt76/mt76x2_eeprom.c:569:37: warning: 'data[2]' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/net/wireless/rsi/rsi_91x_sdio.c:1223:7: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/net/wireless/rsi/rsi_91x_sdio.c:237:12: warning: 'resp' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/nvdimm/label.o: warning: objtool: nd_blk_namespace_label_update()+0x1326: unreachable instruction drivers/pinctrl/core.c:1338: error: Cannot parse struct or union! drivers/scsi/qla2xxx/qla_nx2.c:1193:39: warning: 'agt_ctrl' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:2235:25: warning: 'read_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:2413:37: warning: 'r_data' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:2507:48: warning: 'c_value_r' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:3034:35: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:3084:37: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:3193:30: warning: 'r_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:3712:9: warning: 'spi_val' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/scsi/qla2xxx/qla_nx2.c:695:17: warning: 'value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/staging/gmjstcm/tcm_tis_spi.c:726:37: sparse: sparse: incorrect type in argument 1 (different address spaces) drivers/staging/gmjstcm/tcm_tis_spi.c:729:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/tty/tty_buffer.c:170:2: error: implicit declaration of function 'printk_safe_enter'; did you mean 'printk_nmi_enter'? [-Werror=implicit-function-declaration] drivers/tty/tty_buffer.c:172:2: error: implicit declaration of function 'printk_safe_exit'; did you mean 'printk_nmi_exit'? [-Werror=implicit-function-declaration] drivers/usb/typec/tcpm.c:4421:45: sparse: sparse: unsigned value that used to be signed checked against zero? drivers/xen/xen-pciback/conf_space_quirks.o: warning: objtool: missing symbol for section .text include/asm-generic/io.h:742:19: warning: 'reg' may be used uninitialized in this function [-Wmaybe-uninitialized] include/asm-generic/io.h:742:19: warning: this statement may fall through [-Wimplicit-fallthrough=] include/linux/list.h:63:20: warning: storing the address of local variable 'ticket' in '((struct list_head *)((char *)space_info + 8))[10].prev' [-Wdangling-pointer=] include/linux/list.h:63:20: warning: storing the address of local variable 'wait' in '((struct list_head *)x)[1].prev' [-Wdangling-pointer=] include/linux/list.h:63:20: warning: storing the address of local variable 'waiter' in '*(struct list_head *)((char *)sem + 8).prev' [-Wdangling-pointer=] include/linux/list.h:65:19: warning: storing the address of local variable 'queue' in '*(struct list_head *)packet.prev' [-Wdangling-pointer=] include/linux/printk.h:346:9: warning: this statement may fall through [-Wimplicit-fallthrough=] include/linux/signal.h:180:29: warning: this statement may fall through [-Wimplicit-fallthrough=] include/linux/string.h:348:16: warning: '__builtin_memcpy' specified bound between 18446744069414584320 and 18446744073709551614 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=] include/linux/thread_info.h:59:17: warning: 'header' may be used uninitialized [-Wmaybe-uninitialized] include/linux/tty_flip.h:27:32: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=] include/linux/uaccess.h:112:17: warning: 's32' may be used uninitialized [-Wmaybe-uninitialized] include/media/v4l2-mediabus.h:108:34: warning: 'mbus_fmt' may be used uninitialized [-Wmaybe-uninitialized] include/scsi/scsi_cmnd.h:333:12: warning: 'scsi_cmnd' may be used uninitialized in this function [-Wmaybe-uninitialized] init/calibrate.c:271:28: warning: no previous prototype for 'calibration_delay_done' [-Wmissing-prototypes] kernel/time/posix-cpu-timers.c:1023:3: warning: 'now' may be used uninitialized in this function [-Wmaybe-uninitialized] kernel/trace/blktrace.c:1296:24: sparse: sparse: incorrect type in assignment (different base types) kernel/trace/blktrace.c:1297:24: sparse: sparse: incorrect type in assignment (different base types) kernel/trace/blktrace.c:1298:24: sparse: sparse: incorrect type in assignment (different base types) lib/lockref.c:52:1: error: unable to generate reloads for: lib/lockref.c:52:1: internal compiler error: in curr_insn_transform, at lra-constraints.c:4011 mm/debug.o: warning: objtool: missing symbol for section .text.unlikely. mm/hugetlb_cgroup.o: warning: objtool: missing symbol for section .init.text mm/kmemleak.o: warning: objtool: missing symbol for section .ref.text mm/memcontrol.c:6287: warning: bad line: | 0, otherwise. mm/memcontrol.o: warning: objtool: missing symbol for section .text.unlikely. mm/memory.c:4655:3: warning: cast from 'int (*)(unsigned long, unsigned long, struct cgp_args *)' to 'ktask_thread_func' (aka 'int (*)(void *, void *, void *)') converts to incompatible function type [-Wcast-function-type-mismatch] mm/page_ext.o: warning: objtool: missing symbol for section .init.text mm/page_owner.o: warning: objtool: missing symbol for section .text.unlikely. mm/rmap.c:1684:6: warning: no previous prototype for 'is_vma_temporary_stack' [-Wmissing-prototypes] mm/rmap.c:906:17: warning: variable 'cstart' set but not used [-Wunused-but-set-variable] mm/rodata_test.c:19:6: warning: no previous prototype for 'rodata_test' [-Wmissing-prototypes] mm/rodata_test.o: warning: objtool: missing symbol for section .text mm/zswap.o: warning: objtool: missing symbol for section .exit.text net/9p/client.c:534:24: warning: 'type' may be used uninitialized in this function [-Wmaybe-uninitialized] Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-wait-in-((struct-list_head-)x)-.prev | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-defconfig | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | `-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous |-- arm64-randconfig-001-20250705 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_enter | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_exit | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-001-20250930 | `-- include-asm-generic-io.h:warning:reg-may-be-used-uninitialized-in-this-function |-- arm64-randconfig-001-20251027 | |-- crypto-lrw.c:warning:mismatch-in-argument-type-of-built-in-function-free-expected-void | `-- crypto-xts.c:warning:mismatch-in-argument-type-of-built-in-function-free-expected-void |-- arm64-randconfig-001-20251029 | `-- include-linux-thread_info.h:warning:header-may-be-used-uninitialized |-- arm64-randconfig-001-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- arm64-randconfig-002-20250922 | |-- drivers-gpu-drm-vc4-vc4_dpi.c:warning:dpi_regs-defined-but-not-used | |-- drivers-gpu-drm-vc4-vc4_txp.c:warning:txp_regs-defined-but-not-used | |-- drivers-gpu-drm-vc4-vc4_vec.c:warning:vec_regs-defined-but-not-used | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-ticket-in-((struct-list_head-)((char-)space_info-))-.prev | `-- include-linux-string.h:warning:__builtin_memcpy-specified-bound-between-and-exceeds-maximum-object-size |-- arm64-randconfig-002-20250925 | `-- include-media-v4l2-mediabus.h:warning:mbus_fmt-may-be-used-uninitialized |-- arm64-randconfig-002-20250929 | `-- include-linux-list.h:warning:storing-the-address-of-local-variable-queue-in-(struct-list_head-)packet.prev |-- arm64-randconfig-002-20251014 | `-- include-linux-tty_flip.h:warning:writing-byte-into-a-region-of-size |-- arm64-randconfig-002-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- arm64-randconfig-003-20250830 | |-- mm-memcontrol.c:warning:bad-line:otherwise. | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- arm64-randconfig-003-20250930 | `-- include-linux-uaccess.h:warning:s32-may-be-used-uninitialized |-- arm64-randconfig-003-20251027 | |-- lib-lockref.c:error:unable-to-generate-reloads-for: | `-- lib-lockref.c:internal-compiler-error:in-curr_insn_transform-at-lra-constraints.c |-- arm64-randconfig-003-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_enter | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_exit | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-004-20250702 | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | `-- mm-rodata_test.c:warning:no-previous-prototype-for-rodata_test |-- arm64-randconfig-004-20250704 | |-- drivers-net-can-usb-kvaser_usb-kvaser_usb_hydra.c:warning:new_state-may-be-used-uninitialized-in-this-function | |-- drivers-net-ethernet-agere-et131x.c:warning:reg-may-be-used-uninitialized-in-this-function | |-- drivers-net-wireless-mediatek-mt76-mt76x2_eeprom.c:warning:data-may-be-used-uninitialized-in-this-function | |-- drivers-net-wireless-rsi-rsi_91x_sdio.c:warning:data-may-be-used-uninitialized-in-this-function | |-- drivers-net-wireless-rsi-rsi_91x_sdio.c:warning:resp-may-be-used-uninitialized-in-this-function | |-- include-scsi-scsi_cmnd.h:warning:scsi_cmnd-may-be-used-uninitialized-in-this-function | |-- kernel-time-posix-cpu-timers.c:warning:now-may-be-used-uninitialized-in-this-function | `-- net-9p-client.c:warning:type-may-be-used-uninitialized-in-this-function |-- arm64-randconfig-004-20250729 | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:agt_ctrl-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:c_value_r-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:data-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:r_data-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:r_value-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:read_value-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:spi_val-may-be-used-uninitialized-in-this-function | |-- drivers-scsi-qla2xxx-qla_nx2.c:warning:temp-may-be-used-uninitialized-in-this-function | `-- drivers-scsi-qla2xxx-qla_nx2.c:warning:value-may-be-used-uninitialized-in-this-function |-- arm64-randconfig-004-20251111 | |-- crypto-lrw.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- crypto-xts.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-asm-generic-io.h:warning:this-statement-may-fall-through | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- arm64-randconfig-r051-20251111 | |-- crypto-aead.c:opportunity-for-str_yes_no(alg-cra_flags-CRYPTO_ALG_ASYNC) | |-- crypto-xts.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | |-- mm-rodata_test.c:warning:no-previous-prototype-for-rodata_test | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-r061-20251031 | `-- drivers-block-rbd.c:WARNING-opportunity-for-min() |-- arm64-randconfig-r121-20250729 | |-- include-linux-mem_reliable.h:sparse:sparse:restricted-gfp_t-degrades-to-integer | |-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_debug_handler-was-not-declared.-Should-it-be-static | `-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_limit_handler-was-not-declared.-Should-it-be-static |-- arm64-randconfig-r123-20250916 | |-- arch-arm64-kernel-smp.c:sparse:sparse:incorrect-type-in-argument-(different-address-spaces)-expected-void-volatile-noderef-asn-addr-got-unsigned-long-assigned-park_exit | |-- drivers-staging-gmjstcm-tcm_tis_spi.c:sparse:sparse:incorrect-type-in-argument-(different-address-spaces)-expected-void-const-volatile-noderef-asn-addr-got-void-static-noderef-toplevel-asn-reuse_conf_ | |-- drivers-staging-gmjstcm-tcm_tis_spi.c:sparse:sparse:incorrect-type-in-argument-(different-address-spaces)-expected-void-volatile-noderef-asn-addr-got-void | |-- kernel-trace-blktrace.c:sparse:sparse:incorrect-type-in-assignment-(different-base-types)-expected-restricted-__be32-usertype-device_from-got-unsigned-int | |-- kernel-trace-blktrace.c:sparse:sparse:incorrect-type-in-assignment-(different-base-types)-expected-restricted-__be32-usertype-device_to-got-unsigned-int | `-- kernel-trace-blktrace.c:sparse:sparse:incorrect-type-in-assignment-(different-base-types)-expected-restricted-__be64-usertype-sector_from-got-unsigned-long-long |-- arm64-randconfig-r134-20251105 | `-- drivers-usb-typec-tcpm.c:sparse:sparse:unsigned-value-that-used-to-be-signed-checked-against-zero |-- x86_64-allnoconfig | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-mmu_gather.o:warning:objtool:missing-symbol-for-section-.text | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-001-20250401 | `-- drivers-nvdimm-label.o:warning:objtool:nd_blk_namespace_label_update:unreachable-instruction |-- x86_64-buildonly-randconfig-001-20250718 | `-- drivers-spi-spi-phytium-plat.c:warning:unused-variable-phytium_spi_acpi_match |-- x86_64-buildonly-randconfig-001-20250827 | |-- drivers-infiniband-sw-rxe-rxe_mr.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- drivers-net-ethernet-mellanox-mlx5-core-en_dim.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-net-ethernet-netronome-nfp-abm-ctrl.o:warning:objtool:missing-symbol-for-section-.text | `-- drivers-xen-xen-pciback-conf_space_quirks.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-002-20250806 | |-- arch-x86-platform-uv-tlb_uv.c:warning:unused-variable-proc_uv_ptc_operations | |-- drivers-misc-sgi-gru-gruprocfs.c:warning:unused-variable-mcs_statistics_fops | |-- drivers-misc-sgi-gru-gruprocfs.c:warning:unused-variable-options_fops | |-- drivers-misc-sgi-gru-gruprocfs.c:warning:unused-variable-statistics_fops | `-- drivers-misc-sgi-gru-gruprocfs.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-002-20250827 | |-- crypto-asymmetric_keys-mscode_parser.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-media-platform-xilinx-xilinx-vip.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-net-wireless-ath-ath6kl-hif.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-net-wireless-ath-ath6kl-init.o:warning:objtool:missing-symbol-for-section-.text | `-- mm-hugetlb_cgroup.o:warning:objtool:missing-symbol-for-section-.init.text |-- x86_64-buildonly-randconfig-002-20251010 | `-- mm-zswap.o:warning:objtool:missing-symbol-for-section-.exit.text |-- x86_64-buildonly-randconfig-002-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-003-20250207 | `-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool |-- x86_64-buildonly-randconfig-003-20250704 | `-- mm-page_owner.o:warning:objtool:missing-symbol-for-section-.text.unlikely. |-- x86_64-buildonly-randconfig-003-20250711 | |-- block-ioctl.o:warning:objtool:missing-symbol-for-section-.text | |-- block-partitions-check.o:warning:objtool:missing-symbol-for-section-.text | |-- block-scsi_ioctl.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-gpu-drm-amd-amdkfd-kfd_process_queue_manager.o:warning:objtool:missing-symbol-for-section-.text | |-- mm-debug.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- mm-memcontrol.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- mm-page_ext.o:warning:objtool:missing-symbol-for-section-.init.text | `-- mm-rodata_test.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-003-20251028 | |-- block-bfq-cgroup.o:warning:objtool:missing-symbol-for-section-.text | |-- block-bfq-wf2q.o:warning:objtool:missing-symbol-for-section-.text | |-- block-blk-lib.o:warning:objtool:missing-symbol-for-section-.text | |-- block-blk-mq-pci.o:warning:objtool:missing-symbol-for-section-.text | |-- block-cmdline-parser.o:warning:objtool:missing-symbol-for-section-.text | |-- block-ioctl.o:warning:objtool:missing-symbol-for-section-.text | |-- block-partitions-check.o:warning:objtool:missing-symbol-for-section-.text | |-- block-scsi_ioctl.o:warning:objtool:missing-symbol-for-section-.text | |-- mm-debug.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- mm-kmemleak.o:warning:objtool:missing-symbol-for-section-.ref.text | `-- mm-memcontrol.o:warning:objtool:missing-symbol-for-section-.text.unlikely. |-- x86_64-buildonly-randconfig-005-20241216 | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-005-20250714 | |-- block-bfq-cgroup.o:warning:objtool:missing-symbol-for-section-.text | |-- block-blk-mq-rdma.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-isdn-mISDN-dsp_cmx.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- drivers-isdn-mISDN-dsp_hwec.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | `-- drivers-net-can-usb-peak_usb-pcan_usb_core.o:warning:objtool:missing-symbol-for-section-.text.unlikely. |-- x86_64-buildonly-randconfig-005-20250806 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | `-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue |-- x86_64-buildonly-randconfig-005-20250820 | `-- mm-early_ioremap.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-005-20250827 | |-- drivers-media-pci-cx25821-cx25821-core.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | `-- drivers-net-ethernet-netronome-nfp-nfp_app.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-005-20250915 | `-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type |-- x86_64-buildonly-randconfig-006-20250620 | `-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group |-- x86_64-buildonly-randconfig-006-20250924 | |-- drivers-media-pci-cobalt-cobalt-i2c.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | `-- drivers-media-pci-cobalt-cobalt-irq.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-randconfig-003-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-randconfig-004-20251111 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-randconfig-005-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-006-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-011-20251111 | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- x86_64-randconfig-013-20251111 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-015-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-016-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- x86_64-randconfig-072-20251111 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-randconfig-076-20251111 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-101-20241223 | `-- fs-ext4-mballoc.o:warning:objtool:ext4_mb_complex_scan_group:unreachable-instruction |-- x86_64-randconfig-103-20250219 | |-- kernel-sched-debug.c:error:no-member-named-nr_wakeups_force_preferred_cpus-in-struct-dyn_affinity_stats | `-- kernel-sched-debug.c:error:no-member-named-nr_wakeups_preferred_cpus-in-struct-dyn_affinity_stats |-- x86_64-randconfig-103-20250305 | `-- drivers-gpu-drm-amd-amdgpu-amdgpu_ids.o:warning:objtool:amdgpu_vmid_grab:unreachable-instruction `-- x86_64-randconfig-122-20241226 `-- fs-debugfs-file.o:warning:objtool:full_proxy_open:unreachable-instruction elapsed time: 1514m configs tested: 32 configs skipped: 105 tested configs: arm64 allnoconfig gcc-15.1.0 arm64 defconfig gcc-15.1.0 arm64 randconfig-001-20251111 gcc-7.5.0 arm64 randconfig-002-20251111 gcc-11.5.0 arm64 randconfig-003-20251111 gcc-7.5.0 arm64 randconfig-004-20251111 gcc-14.3.0 x86_64 allnoconfig clang-20 x86_64 buildonly-randconfig-001-20251111 gcc-14 x86_64 buildonly-randconfig-002-20251111 clang-20 x86_64 buildonly-randconfig-003-20251111 gcc-14 x86_64 buildonly-randconfig-004-20251111 gcc-14 x86_64 buildonly-randconfig-005-20251111 gcc-14 x86_64 buildonly-randconfig-006-20251111 gcc-14 x86_64 defconfig gcc-14 x86_64 randconfig-001-20251111 gcc-14 x86_64 randconfig-002-20251111 gcc-13 x86_64 randconfig-003-20251111 clang-20 x86_64 randconfig-004-20251111 clang-20 x86_64 randconfig-005-20251111 clang-20 x86_64 randconfig-006-20251111 clang-20 x86_64 randconfig-011-20251111 clang-20 x86_64 randconfig-012-20251111 gcc-14 x86_64 randconfig-013-20251111 clang-20 x86_64 randconfig-014-20251111 gcc-14 x86_64 randconfig-015-20251111 clang-20 x86_64 randconfig-016-20251111 clang-20 x86_64 randconfig-071-20251111 gcc-14 x86_64 randconfig-072-20251111 clang-20 x86_64 randconfig-073-20251111 gcc-14 x86_64 randconfig-074-20251111 gcc-14 x86_64 randconfig-075-20251111 gcc-14 x86_64 randconfig-076-20251111 clang-20 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/8] blk-ioinf: introduce inflight-based IO QoS controller
by Baokun Li 11 Nov '25

11 Nov '25

Baokun Li (8): blk-ioinf: introduce inflight-based IO QoS controller blk-ioinf: add rqos/inflight/stat debufs interface blk-ioinf: dynamically adjust inflight limit to balance workloads blk-ioinf: support percentile latency QoS for oneline workloads blk-io-hierarchy: support new bio based stage ioinf openeuler_defconfig: Enable CONFIG_BLK_CGROUP_IOINFLIGHT blk-mq: fix kabi broken in struct request blk-rq-qos: fix kabi broken in struct rq_qos arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + block/Kconfig | 10 + block/Makefile | 1 + block/blk-io-hierarchy/Kconfig | 11 + block/blk-io-hierarchy/debugfs.c | 3 + block/blk-ioinf.c | 1342 ++++++++++++++++++++++++ block/blk-mq-debugfs.c | 4 +- block/blk-rq-qos.c | 2 +- block/blk-rq-qos.h | 8 +- include/linux/blk-mq.h | 4 + include/linux/blk_types.h | 3 + 12 files changed, 1384 insertions(+), 6 deletions(-) create mode 100644 block/blk-ioinf.c -- 2.46.1

2 9

[PATCH OLK-6.6] KVM: x86: use array_index_nospec with indices that come from guest
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Thijs Raymakers <thijs(a)raymakers.nl> stable inclusion from stable-v6.6.104 commit f49161646e03d107ce81a99c6ca5da682fe5fb69 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICYBRH Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit c87bd4dd43a624109c3cc42d843138378a7f4548 upstream. min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels. Signed-off-by: Thijs Raymakers <thijs(a)raymakers.nl> Cc: stable(a)vger.kernel.org Cc: Sean Christopherson <seanjc(a)google.com> Cc: Paolo Bonzini <pbonzini(a)redhat.com> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Fixes: 715062970f37 ("KVM: X86: Implement PV sched yield hypercall") Fixes: bdf7ffc89922 ("KVM: LAPIC: Fix pv ipis out-of-bounds access") Fixes: 4180bf1b655a ("KVM: X86: Implement "send IPI" hypercall") Link: https://lore.kernel.org/r/20250804064405.4802-1-thijs@raymakers.nl Signed-off-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- arch/x86/kvm/lapic.c | 2 ++ arch/x86/kvm/x86.c | 7 +++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 66c7f2367bb3..c67610ae5e0b 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -836,6 +836,8 @@ static int __pv_send_ipi(unsigned long *ipi_bitmap, struct kvm_apic_map *map, if (min > map->max_apic_id) return 0; + min = array_index_nospec(min, map->max_apic_id + 1); + for_each_set_bit(i, ipi_bitmap, min((u32)BITS_PER_LONG, (map->max_apic_id - min + 1))) { if (map->phys_map[min + i]) { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7a98760a4c03..de851f3dff7b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9961,8 +9961,11 @@ static void kvm_sched_yield(struct kvm_vcpu *vcpu, unsigned long dest_id) rcu_read_lock(); map = rcu_dereference(vcpu->kvm->arch.apic_map); - if (likely(map) && dest_id <= map->max_apic_id && map->phys_map[dest_id]) - target = map->phys_map[dest_id]->vcpu; + if (likely(map) && dest_id <= map->max_apic_id) { + dest_id = array_index_nospec(dest_id, map->max_apic_id + 1); + if (map->phys_map[dest_id]) + target = map->phys_map[dest_id]->vcpu; + } rcu_read_unlock(); -- 2.22.0

2 1

[PATCH OLK-6.6] software node: Correct a OOB check in software_node_get_reference_args()
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Zijun Hu <quic_zijuhu(a)quicinc.com> stable inclusion from stable-v6.6.95 commit f9397cf7bfb680799fb8c7f717c8f756384c3280 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICLICJ Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 31e4e12e0e9609850cefd4b2e1adf782f56337d6 ] software_node_get_reference_args() wants to get @index-th element, so the property value requires at least '(index + 1) * sizeof(*ref)' bytes but that can not be guaranteed by current OOB check, and may cause OOB for malformed property. Fix by using as OOB check '((index + 1) * sizeof(*ref) > prop->length)'. Reviewed-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Signed-off-by: Zijun Hu <quic_zijuhu(a)quicinc.com> Link: https://lore.kernel.org/r/20250414-fix_swnode-v2-1-9c9e6ae11eab@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- drivers/base/swnode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 079bd14bdedc..a7a3e3b66bb5 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -518,7 +518,7 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode, if (prop->is_inline) return -EINVAL; - if (index * sizeof(*ref) >= prop->length) + if ((index + 1) * sizeof(*ref) > prop->length) return -ENOENT; ref_array = prop->pointer; -- 2.22.0

2 1

[PATCH OLK-6.6] scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Chenyuan Yang <chenyuan0y(a)gmail.com> stable inclusion from stable-v6.6.89 commit d6979fabe812a168d5053e5a41d5a2e9b8afd7bf category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC6BWT Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 4c324085062919d4e21c69e5e78456dcec0052fe ] A race can occur between the MCQ completion path and the abort handler: once a request completes, __blk_mq_free_request() sets rq->mq_hctx to NULL, meaning the subsequent ufshcd_mcq_req_to_hwq() call in ufshcd_mcq_abort() can return a NULL pointer. If this NULL pointer is dereferenced, the kernel will crash. Add a NULL check for the returned hwq pointer. If hwq is NULL, log an error and return FAILED, preventing a potential NULL-pointer dereference. As suggested by Bart, the ufshcd_cmd_inflight() check is removed. This is similar to the fix in commit 74736103fb41 ("scsi: ufs: core: Fix ufshcd_abort_one racing issue"). This is found by our static analysis tool KNighter. Signed-off-by: Chenyuan Yang <chenyuan0y(a)gmail.com> Link: https://lore.kernel.org/r/20250410001320.2219341-1-chenyuan0y@gmail.com Fixes: f1304d442077 ("scsi: ufs: mcq: Added ufshcd_mcq_abort()") Reviewed-by: Bart Van Assche <bvanassche(a)acm.org> Reviewed-by: Peter Wang <peter.wang(a)mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- drivers/ufs/core/ufs-mcq.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index da8c1734d333..411109a5ebbf 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -632,13 +632,6 @@ int ufshcd_mcq_abort(struct scsi_cmnd *cmd) unsigned long flags; int err; - if (!ufshcd_cmd_inflight(lrbp->cmd)) { - dev_err(hba->dev, - "%s: skip abort. cmd at tag %d already completed.\n", - __func__, tag); - return FAILED; - } - /* Skip task abort in case previous aborts failed and report failure */ if (lrbp->req_abort_skip) { dev_err(hba->dev, "%s: skip abort. tag %d failed earlier\n", @@ -647,6 +640,11 @@ int ufshcd_mcq_abort(struct scsi_cmnd *cmd) } hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(cmd)); + if (!hwq) { + dev_err(hba->dev, "%s: skip abort. cmd at tag %d already completed.\n", + __func__, tag); + return FAILED; + } if (ufshcd_mcq_sqe_search(hba, hwq, tag)) { /* -- 2.22.0

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[PATCH OLK-6.6] misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> stable inclusion from stable-v6.6.88 commit 5a4b7181213268c9b07bef8800905528435db44a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC5BIV Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit f6cb7828c8e17520d4f5afb416515d3fae1af9a9 upstream. After devm_request_irq() fails with error in pci_endpoint_test_request_irq(), the pci_endpoint_test_free_irq_vectors() is called assuming that all IRQs have been released. However, some requested IRQs remain unreleased, so there are still /proc/irq/* entries remaining, and this results in WARN() with the following message: remove_proc_entry: removing non-empty directory 'irq/30', leaking at least 'pci-endpoint-test.0' WARNING: CPU: 0 PID: 202 at fs/proc/generic.c:719 remove_proc_entry +0x190/0x19c To solve this issue, set the number of remaining IRQs to test->num_irqs, and release IRQs in advance by calling pci_endpoint_test_release_irq(). Cc: stable(a)vger.kernel.org Fixes: e03327122e2c ("pci_endpoint_test: Add 2 ioctl commands") Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam(a)linaro.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> Link: https://lore.kernel.org/r/20250225110252.28866-3-hayashi.kunihiko@socionext… [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski(a)kernel.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- drivers/misc/pci_endpoint_test.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index af519088732d..cd5af3e55f28 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -260,6 +260,9 @@ static bool pci_endpoint_test_request_irq(struct pci_endpoint_test *test) break; } + test->num_irqs = i; + pci_endpoint_test_release_irq(test); + return false; } -- 2.22.0

2 1

[PATCH OLK-6.6] um: virtio_uml: Fix use-after-free after put_device in probe
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Miaoqian Lin <linmq006(a)gmail.com> mainline inclusion from mainline-v6.17-rc7 commit 7ebf70cf181651fe3f2e44e95e7e5073d594c9c0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ID0U90 CVE: CVE-2025-39951 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues. Fixes: 04e5b1fb0183 ("um: virtio: Remove device on disconnect") Signed-off-by: Miaoqian Lin <linmq006(a)gmail.com> Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Zhang Yuwei <zhangyuwei20(a)huawei.com> --- arch/um/drivers/virtio_uml.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c index 8adca2000e51..d790acfc2c67 100644 --- a/arch/um/drivers/virtio_uml.c +++ b/arch/um/drivers/virtio_uml.c @@ -1229,10 +1229,12 @@ static int virtio_uml_probe(struct platform_device *pdev) device_set_wakeup_capable(&vu_dev->vdev.dev, true); rc = register_virtio_device(&vu_dev->vdev); - if (rc) + if (rc) { put_device(&vu_dev->vdev.dev); + return rc; + } vu_dev->registered = 1; - return rc; + return 0; error_init: os_close_file(vu_dev->sock); -- 2.22.0

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[PATCH OLK-6.6] KVM: x86: use array_index_nospec with indices that come from guest
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Thijs Raymakers <thijs(a)raymakers.nl> stable inclusion from stable-v6.6.104 commit f49161646e03d107ce81a99c6ca5da682fe5fb69 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ICXO12 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit c87bd4dd43a624109c3cc42d843138378a7f4548 upstream. min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels. Signed-off-by: Thijs Raymakers <thijs(a)raymakers.nl> Cc: stable(a)vger.kernel.org Cc: Sean Christopherson <seanjc(a)google.com> Cc: Paolo Bonzini <pbonzini(a)redhat.com> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Fixes: 715062970f37 ("KVM: X86: Implement PV sched yield hypercall") Fixes: bdf7ffc89922 ("KVM: LAPIC: Fix pv ipis out-of-bounds access") Fixes: 4180bf1b655a ("KVM: X86: Implement "send IPI" hypercall") Link: https://lore.kernel.org/r/20250804064405.4802-1-thijs@raymakers.nl Signed-off-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- arch/x86/kvm/lapic.c | 2 ++ arch/x86/kvm/x86.c | 7 +++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 66c7f2367bb3..c67610ae5e0b 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -836,6 +836,8 @@ static int __pv_send_ipi(unsigned long *ipi_bitmap, struct kvm_apic_map *map, if (min > map->max_apic_id) return 0; + min = array_index_nospec(min, map->max_apic_id + 1); + for_each_set_bit(i, ipi_bitmap, min((u32)BITS_PER_LONG, (map->max_apic_id - min + 1))) { if (map->phys_map[min + i]) { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7a98760a4c03..de851f3dff7b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9961,8 +9961,11 @@ static void kvm_sched_yield(struct kvm_vcpu *vcpu, unsigned long dest_id) rcu_read_lock(); map = rcu_dereference(vcpu->kvm->arch.apic_map); - if (likely(map) && dest_id <= map->max_apic_id && map->phys_map[dest_id]) - target = map->phys_map[dest_id]->vcpu; + if (likely(map) && dest_id <= map->max_apic_id) { + dest_id = array_index_nospec(dest_id, map->max_apic_id + 1); + if (map->phys_map[dest_id]) + target = map->phys_map[dest_id]->vcpu; + } rcu_read_unlock(); -- 2.22.0

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[PATCH OLK-6.6] software node: Correct a OOB check in software_node_get_reference_args()
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Zijun Hu <quic_zijuhu(a)quicinc.com> stable inclusion from stable-v6.6.95 commit f9397cf7bfb680799fb8c7f717c8f756384c3280 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ICOE0M Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 31e4e12e0e9609850cefd4b2e1adf782f56337d6 ] software_node_get_reference_args() wants to get @index-th element, so the property value requires at least '(index + 1) * sizeof(*ref)' bytes but that can not be guaranteed by current OOB check, and may cause OOB for malformed property. Fix by using as OOB check '((index + 1) * sizeof(*ref) > prop->length)'. Reviewed-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Signed-off-by: Zijun Hu <quic_zijuhu(a)quicinc.com> Link: https://lore.kernel.org/r/20250414-fix_swnode-v2-1-9c9e6ae11eab@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- drivers/base/swnode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 079bd14bdedc..a7a3e3b66bb5 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -518,7 +518,7 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode, if (prop->is_inline) return -EINVAL; - if (index * sizeof(*ref) >= prop->length) + if ((index + 1) * sizeof(*ref) > prop->length) return -ENOENT; ref_array = prop->pointer; -- 2.22.0

2 1

[PATCH OLK-6.6 v2 00/14] Add MFS Support
by Huang Xiaojia 11 Nov '25

11 Nov '25

MFS is a stackable file system that utilizes a lower and a cache layer. It provides users with programmable caching capabilities. MFS only supports read-only operations for regular files, directories and symbolic links. When MFS is stacked on top of the lower and cache layers (which are themselves mounted on other file systems, such as ext4 or xfs), the underlying file systems must be also kept read-only to prevent the data inconsistency. MFS supports three running mode: none, local and remote. These modes are explained in running mode section. In short, MFS requires the `mtree` and `cachedir` mount options. The `mtree` option specifies the metadata source for MFS, while the `cachedir` option specifies the data source. In local or remote mode, `cachedir` points to a local cache (in memory or on disk) for backend file systems. v2: squash several patches together Hongbo Li (12): mfs: Initialize mfs module mfs: implement the mount procedure mfs: Add basic metadata operation for MFS mfs: Add basic data operation for MFS mfs: Add basic cache framework: check method and control structure mfs: Add basic events framework mfs: Add communication devie and event acquisition operations mfs: Add user command for handling events mfs: Add tracepoint for MFS mfs: Add MFS documentation MAINTAINERS: Add maintainer for mfs mfs: enable MFS Huang Xiaojia (2): mfs: Optimize mfs syncer process and metadata ops mfs: tool: Add mfs user space tool demo Documentation/filesystems/index.rst | 1 + Documentation/filesystems/mfs.rst | 223 +++++++++++ MAINTAINERS | 10 + arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/Kconfig | 1 + fs/Makefile | 1 + fs/mfs/Kconfig | 12 + fs/mfs/Makefile | 4 + fs/mfs/cache.c | 507 ++++++++++++++++++++++++ fs/mfs/data.c | 523 +++++++++++++++++++++++++ fs/mfs/dev.c | 242 ++++++++++++ fs/mfs/inode.c | 303 ++++++++++++++ fs/mfs/internal.h | 232 +++++++++++ fs/mfs/super.c | 499 +++++++++++++++++++++++ include/trace/events/mfs.h | 105 +++++ include/uapi/linux/magic.h | 1 + include/uapi/linux/mfs.h | 62 +++ tools/mfs/.gitignore | 2 + tools/mfs/Makefile | 13 + tools/mfs/mfsd.c | 186 +++++++++ 21 files changed, 2929 insertions(+) create mode 100644 Documentation/filesystems/mfs.rst create mode 100644 fs/mfs/Kconfig create mode 100644 fs/mfs/Makefile create mode 100644 fs/mfs/cache.c create mode 100644 fs/mfs/data.c create mode 100644 fs/mfs/dev.c create mode 100644 fs/mfs/inode.c create mode 100644 fs/mfs/internal.h create mode 100644 fs/mfs/super.c create mode 100644 include/trace/events/mfs.h create mode 100644 include/uapi/linux/mfs.h create mode 100644 tools/mfs/.gitignore create mode 100644 tools/mfs/Makefile create mode 100644 tools/mfs/mfsd.c -- 2.25.1

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[PATCH OLK-6.6] scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
by Zhang Yuwei 11 Nov '25

11 Nov '25

From: Chenyuan Yang <chenyuan0y(a)gmail.com> stable inclusion from stable-v6.6.89 commit d6979fabe812a168d5053e5a41d5a2e9b8afd7bf category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IC8J7I Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 4c324085062919d4e21c69e5e78456dcec0052fe ] A race can occur between the MCQ completion path and the abort handler: once a request completes, __blk_mq_free_request() sets rq->mq_hctx to NULL, meaning the subsequent ufshcd_mcq_req_to_hwq() call in ufshcd_mcq_abort() can return a NULL pointer. If this NULL pointer is dereferenced, the kernel will crash. Add a NULL check for the returned hwq pointer. If hwq is NULL, log an error and return FAILED, preventing a potential NULL-pointer dereference. As suggested by Bart, the ufshcd_cmd_inflight() check is removed. This is similar to the fix in commit 74736103fb41 ("scsi: ufs: core: Fix ufshcd_abort_one racing issue"). This is found by our static analysis tool KNighter. Signed-off-by: Chenyuan Yang <chenyuan0y(a)gmail.com> Link: https://lore.kernel.org/r/20250410001320.2219341-1-chenyuan0y@gmail.com Fixes: f1304d442077 ("scsi: ufs: mcq: Added ufshcd_mcq_abort()") Reviewed-by: Bart Van Assche <bvanassche(a)acm.org> Reviewed-by: Peter Wang <peter.wang(a)mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- drivers/ufs/core/ufs-mcq.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index da8c1734d333..411109a5ebbf 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -632,13 +632,6 @@ int ufshcd_mcq_abort(struct scsi_cmnd *cmd) unsigned long flags; int err; - if (!ufshcd_cmd_inflight(lrbp->cmd)) { - dev_err(hba->dev, - "%s: skip abort. cmd at tag %d already completed.\n", - __func__, tag); - return FAILED; - } - /* Skip task abort in case previous aborts failed and report failure */ if (lrbp->req_abort_skip) { dev_err(hba->dev, "%s: skip abort. tag %d failed earlier\n", @@ -647,6 +640,11 @@ int ufshcd_mcq_abort(struct scsi_cmnd *cmd) } hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(cmd)); + if (!hwq) { + dev_err(hba->dev, "%s: skip abort. cmd at tag %d already completed.\n", + __func__, tag); + return FAILED; + } if (ufshcd_mcq_sqe_search(hba, hwq, tag)) { /* -- 2.22.0

2 1

[openeuler:OLK-6.6 3129/3129] drivers/ub/ubfi/irq.c:18:20: error: no member named 'domain' in 'struct dev_msi_info'
by kernel test robot 11 Nov '25

11 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: be4908c3dd5d15795275b738fbadd71ff8f0fbaa commit: 028a4161a77d2e15d331a13599a6f06cdd7490b6 [3129/3129] ub:ubfi: register ubc usi domain config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251111/202511111409.5wQwlEc6-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251111/202511111409.5wQwlEc6-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511111409.5wQwlEc6-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/ub/ubfi/irq.c:18:20: error: no member named 'domain' in 'struct dev_msi_info' 18 | domain = dev->msi.domain; | ~~~~~~~~ ^ 1 error generated. vim +18 drivers/ub/ubfi/irq.c 11 12 int ub_update_msi_domain(struct device *dev, 13 enum irq_domain_bus_token bus_token) 14 { 15 struct fwnode_handle *fwnode; 16 struct irq_domain *domain; 17 > 18 domain = dev->msi.domain; 19 if (!domain) { 20 dev_err(dev, "find base irq domain failed!\n"); 21 return -ENODEV; 22 } 23 24 fwnode = domain->fwnode; 25 if (!fwnode) { 26 dev_err(dev, "find fwnode failed!\n"); 27 return -ENODEV; 28 } 29 30 domain = irq_find_matching_fwnode(fwnode, bus_token); 31 if (!domain) { 32 dev_err(dev, "find irq domain failed!\n"); 33 return -ENODEV; 34 } 35 36 /* Update msi domain with new bus_token */ 37 dev_set_msi_domain(dev, domain); 38 39 return 0; 40 } 41 EXPORT_SYMBOL_GPL(ub_update_msi_domain); 42 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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