- Kernel - mailweb.openeuler.org

[PATCH OLK-6.6 v5 00/48] fuse:io_uring: support fuse over io_uring
by Long Li 17 Nov '25

17 Nov '25

v1 -> v2: Fix some build error for io_uring patchs. v2 -> v3: Modify kabi fixed patchs format v3 -> v4: Enable CONFIG_FUSE_IO_URING v4 -> v5: Fix patch commit message format Bernd Schubert (19): fuse: rename to fuse_dev_end_requests and make non-static fuse: Move fuse_get_dev to header file fuse: Move request bits fuse: Add fuse-io-uring design documentation fuse: make args->in_args[0] to be always the header fuse: {io-uring} Handle SQEs - register commands fuse: Make fuse_copy non static fuse: Add fuse-io-uring handling into fuse_copy fuse: {io-uring} Make hash-list req unique finding functions non-static fuse: Add io-uring sqe commit and fetch support fuse: {io-uring} Handle teardown of ring entries fuse: {io-uring} Make fuse_dev_queue_{interrupt,forget} non-static fuse: Allow to queue fg requests through io-uring fuse: Allow to queue bg requests through io-uring fuse: {io-uring} Prevent mount point hang on fuse-server termination fuse: block request allocation until io-uring init is complete fuse: enable fuse-over-io-uring fuse: prevent disabling io-uring on active connections fuse: {io-uring} Fix a possible req cancellation race Jens Axboe (1): io_uring: remove dead struct io_submit_state member Joanne Koong (2): fuse: fix uring race condition for null dereference of fc fuse: remove unneeded atomic set in uring creation Long Li (5): io_uring: fix kabi broken in struct io_tw_state io_uring: fix kabi broken in struct io_ring_ctx io_uring: fix kabi broken in struct io_submit_state io_uring: fix kabi broken for header file changed openeuler_defconfig: enable CONFIG_FUSE_IO_URING by default Luis Henriques (2): fuse: fix possible deadlock if rings are never initialized fuse: removed unused function fuse_uring_create() from header Ming Lei (3): io_uring: retain top 8bits of uring_cmd flags for kernel internal use io_uring: cancelable uring_cmd io_uring: kill dead code in io_req_complete_post Pavel Begunkov (16): io_uring: split out cmd api into a separate header io_uring/cmd: inline io_uring_cmd_do_in_task_lazy io_uring/cmd: expose iowq to cmds io_uring/cmd: give inline space in request to cmds io_uring/cmd: move io_uring_try_cancel_uring_cmd() io_uring/cmd: kill one issue_flags to tw conversion io_uring/cmd: fix tw <-> issue_flags conversion io_uring/cmd: document some uring_cmd related helpers io_uring: force tw ctx locking io_uring: remove struct io_tw_state::locked io_uring: refactor io_fill_cqe_req_aux io_uring: get rid of intermediate aux cqe caches io_uring: remove current check from complete_post io_uring: refactor io_req_complete_post() io_uring: clean up io_lockdep_assert_cq_locked io_uring/cmd: let cmds to know about dying task Documentation/filesystems/fuse-io-uring.rst | 99 ++ Documentation/filesystems/index.rst | 1 + MAINTAINERS | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/block/ublk_drv.c | 2 +- drivers/nvme/host/ioctl.c | 2 +- fs/fuse/Kconfig | 12 + fs/fuse/Makefile | 1 + fs/fuse/dax.c | 11 +- fs/fuse/dev.c | 174 ++- fs/fuse/dev_uring.c | 1326 +++++++++++++++++++ fs/fuse/dev_uring_i.h | 205 +++ fs/fuse/dir.c | 32 +- fs/fuse/fuse_dev_i.h | 69 + fs/fuse/fuse_i.h | 35 +- fs/fuse/inode.c | 14 +- fs/fuse/xattr.c | 7 +- include/linux/io_uring.h | 73 +- include/linux/io_uring/cmd.h | 140 ++ include/linux/io_uring_types.h | 7 +- include/uapi/linux/fuse.h | 77 +- include/uapi/linux/io_uring.h | 5 +- io_uring/io_uring.c | 212 +-- io_uring/io_uring.h | 34 +- io_uring/net.c | 6 +- io_uring/poll.c | 3 +- io_uring/refs.h | 7 + io_uring/rw.c | 8 +- io_uring/timeout.c | 8 +- io_uring/uring_cmd.c | 114 +- io_uring/uring_cmd.h | 3 + security/selinux/hooks.c | 2 +- security/smack/smack_lsm.c | 2 +- 34 files changed, 2315 insertions(+), 379 deletions(-) create mode 100644 Documentation/filesystems/fuse-io-uring.rst create mode 100644 fs/fuse/dev_uring.c create mode 100644 fs/fuse/dev_uring_i.h create mode 100644 fs/fuse/fuse_dev_i.h create mode 100644 include/linux/io_uring/cmd.h -- 2.39.2

2 49

[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 17 Nov '25

17 Nov '25

Alekseev Dmitry (2): xsched: Add XCU control group implementation and its backend in xsched CFS xsched: Add support for CFS quota for cgroups Konstantin Meskhidze (6): xsched: Add base vstream support xcu: Add base NPU driver support xsched: Introduce vstream management xsched: Add basic scheduler core support xsched: Add xsched RT class xsched: Add xsched CFS class arch/arm/include/uapi/asm/unistd.h | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/powerpc/include/uapi/asm/unistd.h | 1 + arch/x86/configs/openeuler_defconfig | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/x86/include/uapi/asm/unistd.h | 1 + drivers/Makefile | 1 + drivers/xcu/Makefile | 2 + drivers/xcu/xcu_group.c | 380 ++++++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/syscalls.h | 2 + include/linux/vstream.h | 91 +++ include/linux/xcu_group.h | 96 +++ include/linux/xsched.h | 514 ++++++++++++++++ include/uapi/asm-generic/unistd.h | 6 +- include/uapi/linux/xcu_vstream.h | 77 +++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/cgroup/cgroup.c | 2 +- kernel/xsched/Kconfig | 85 +++ kernel/xsched/Makefile | 6 + kernel/xsched/cfs.c | 237 ++++++++ kernel/xsched/cfs_quota.c | 98 ++++ kernel/xsched/cgroup.c | 775 +++++++++++++++++++++++++ kernel/xsched/core.c | 526 +++++++++++++++++ kernel/xsched/rt.c | 281 +++++++++ kernel/xsched/vstream.c | 673 +++++++++++++++++++++ 27 files changed, 3861 insertions(+), 4 deletions(-) create mode 100644 drivers/xcu/Makefile create mode 100644 drivers/xcu/xcu_group.c create mode 100644 include/linux/vstream.h create mode 100644 include/linux/xcu_group.h create mode 100644 include/linux/xsched.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/cfs.c create mode 100644 kernel/xsched/cfs_quota.c create mode 100644 kernel/xsched/cgroup.c create mode 100644 kernel/xsched/core.c create mode 100644 kernel/xsched/rt.c create mode 100644 kernel/xsched/vstream.c -- 2.34.1

2 9

[PATCH OLK-6.6 v4 00/48] fuse:io_uring: support fuse over io_uring
by Long Li 17 Nov '25

17 Nov '25

v1 -> v2: Fix some build error for io_uring patchs. v2 -> v3: Modify kabi fixed patchs format v3 -> v4: Enable CONFIG_FUSE_IO_URING Bernd Schubert (19): fuse: rename to fuse_dev_end_requests and make non-static fuse: Move fuse_get_dev to header file fuse: Move request bits fuse: Add fuse-io-uring design documentation fuse: make args->in_args[0] to be always the header fuse: {io-uring} Handle SQEs - register commands fuse: Make fuse_copy non static fuse: Add fuse-io-uring handling into fuse_copy fuse: {io-uring} Make hash-list req unique finding functions non-static fuse: Add io-uring sqe commit and fetch support fuse: {io-uring} Handle teardown of ring entries fuse: {io-uring} Make fuse_dev_queue_{interrupt,forget} non-static fuse: Allow to queue fg requests through io-uring fuse: Allow to queue bg requests through io-uring fuse: {io-uring} Prevent mount point hang on fuse-server termination fuse: block request allocation until io-uring init is complete fuse: enable fuse-over-io-uring fuse: prevent disabling io-uring on active connections fuse: {io-uring} Fix a possible req cancellation race Jens Axboe (1): io_uring: remove dead struct io_submit_state member Joanne Koong (2): fuse: fix uring race condition for null dereference of fc fuse: remove unneeded atomic set in uring creation Long Li (5): io_uring: fix kabi broken in struct io_tw_state io_uring: fix kabi broken in struct io_ring_ctx io_uring: fix kabi broken in struct io_submit_state io_uring: fix kabi broken for header file changed openeuler_defconfig: enable CONFIG_FUSE_IO_URING by default Luis Henriques (2): fuse: fix possible deadlock if rings are never initialized fuse: removed unused function fuse_uring_create() from header Ming Lei (3): io_uring: retain top 8bits of uring_cmd flags for kernel internal use io_uring: cancelable uring_cmd io_uring: kill dead code in io_req_complete_post Pavel Begunkov (16): io_uring: split out cmd api into a separate header io_uring/cmd: inline io_uring_cmd_do_in_task_lazy io_uring/cmd: expose iowq to cmds io_uring/cmd: give inline space in request to cmds io_uring/cmd: move io_uring_try_cancel_uring_cmd() io_uring/cmd: kill one issue_flags to tw conversion io_uring/cmd: fix tw <-> issue_flags conversion io_uring/cmd: document some uring_cmd related helpers io_uring: force tw ctx locking io_uring: remove struct io_tw_state::locked io_uring: refactor io_fill_cqe_req_aux io_uring: get rid of intermediate aux cqe caches io_uring: remove current check from complete_post io_uring: refactor io_req_complete_post() io_uring: clean up io_lockdep_assert_cq_locked io_uring/cmd: let cmds to know about dying task Documentation/filesystems/fuse-io-uring.rst | 99 ++ Documentation/filesystems/index.rst | 1 + MAINTAINERS | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/block/ublk_drv.c | 2 +- drivers/nvme/host/ioctl.c | 2 +- fs/fuse/Kconfig | 12 + fs/fuse/Makefile | 1 + fs/fuse/dax.c | 11 +- fs/fuse/dev.c | 174 ++- fs/fuse/dev_uring.c | 1326 +++++++++++++++++++ fs/fuse/dev_uring_i.h | 205 +++ fs/fuse/dir.c | 32 +- fs/fuse/fuse_dev_i.h | 69 + fs/fuse/fuse_i.h | 35 +- fs/fuse/inode.c | 14 +- fs/fuse/xattr.c | 7 +- include/linux/io_uring.h | 73 +- include/linux/io_uring/cmd.h | 140 ++ include/linux/io_uring_types.h | 7 +- include/uapi/linux/fuse.h | 77 +- include/uapi/linux/io_uring.h | 5 +- io_uring/io_uring.c | 212 +-- io_uring/io_uring.h | 34 +- io_uring/net.c | 6 +- io_uring/poll.c | 3 +- io_uring/refs.h | 7 + io_uring/rw.c | 8 +- io_uring/timeout.c | 8 +- io_uring/uring_cmd.c | 114 +- io_uring/uring_cmd.h | 3 + security/selinux/hooks.c | 2 +- security/smack/smack_lsm.c | 2 +- 34 files changed, 2315 insertions(+), 379 deletions(-) create mode 100644 Documentation/filesystems/fuse-io-uring.rst create mode 100644 fs/fuse/dev_uring.c create mode 100644 fs/fuse/dev_uring_i.h create mode 100644 fs/fuse/fuse_dev_i.h create mode 100644 include/linux/io_uring/cmd.h -- 2.39.2

2 49

[PATCH OLK-6.6 0/2] CVE-2025-40169
by Pu Lehui 17 Nov '25

17 Nov '25

Eduard Zingerman (1): selftests/bpf: Add tests for rejection of ALU ops with negative offsets Yazhou Tang (1): bpf: Reject negative offsets for ALU ops kernel/bpf/verifier.c | 4 +-- .../bpf/progs/verifier_value_illegal_alu.c | 29 +++++++++++++++++++ 2 files changed, 31 insertions(+), 2 deletions(-) -- 2.34.1

2 3

[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 17 Nov '25

17 Nov '25

Alekseev Dmitry (2): xsched: Add XCU control group implementation and its backend in xsched CFS xsched: Add support for CFS quota for cgroups Konstantin Meskhidze (6): xsched: Add base vstream support xcu: Add base NPU driver support xsched: Introduce vstream management xsched: Add basic scheduler core support xsched: Add xsched RT class xsched: Add xsched CFS class arch/arm/include/uapi/asm/unistd.h | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/powerpc/include/uapi/asm/unistd.h | 1 + arch/x86/configs/openeuler_defconfig | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/x86/include/uapi/asm/unistd.h | 1 + drivers/Makefile | 1 + drivers/xcu/Makefile | 2 + drivers/xcu/xcu_group.c | 380 ++++++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/syscalls.h | 2 + include/linux/vstream.h | 91 +++ include/linux/xcu_group.h | 96 +++ include/linux/xsched.h | 514 ++++++++++++++++ include/uapi/asm-generic/unistd.h | 6 +- include/uapi/linux/xcu_vstream.h | 77 +++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/cgroup/cgroup.c | 2 +- kernel/xsched/Kconfig | 85 +++ kernel/xsched/Makefile | 6 + kernel/xsched/cfs.c | 237 ++++++++ kernel/xsched/cfs_quota.c | 98 ++++ kernel/xsched/cgroup.c | 775 +++++++++++++++++++++++++ kernel/xsched/core.c | 526 +++++++++++++++++ kernel/xsched/rt.c | 281 +++++++++ kernel/xsched/vstream.c | 666 +++++++++++++++++++++ 27 files changed, 3854 insertions(+), 4 deletions(-) create mode 100644 drivers/xcu/Makefile create mode 100644 drivers/xcu/xcu_group.c create mode 100644 include/linux/vstream.h create mode 100644 include/linux/xcu_group.h create mode 100644 include/linux/xsched.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/cfs.c create mode 100644 kernel/xsched/cfs_quota.c create mode 100644 kernel/xsched/cgroup.c create mode 100644 kernel/xsched/core.c create mode 100644 kernel/xsched/rt.c create mode 100644 kernel/xsched/vstream.c -- 2.34.1

2 9

[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 17 Nov '25

17 Nov '25

Alekseev Dmitry (2): xsched: Add XCU control group implementation and its backend in xsched CFS xsched: Add support for CFS quota for cgroups Konstantin Meskhidze (6): xsched: Add base vstream support xcu: Add base NPU driver support xsched: Introduce vstream management xsched: Add basic scheduler core support xsched: Add xsched RT class xsched: Add xsched CFS class arch/arm/include/uapi/asm/unistd.h | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/powerpc/include/uapi/asm/unistd.h | 1 + arch/x86/configs/openeuler_defconfig | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/x86/include/uapi/asm/unistd.h | 1 + drivers/Makefile | 1 + drivers/xcu/Makefile | 2 + drivers/xcu/xcu_group.c | 380 ++++++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/syscalls.h | 2 + include/linux/vstream.h | 91 +++ include/linux/xcu_group.h | 96 +++ include/linux/xsched.h | 514 ++++++++++++++++ include/uapi/asm-generic/unistd.h | 6 +- include/uapi/linux/xcu_vstream.h | 77 +++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/cgroup/cgroup.c | 2 +- kernel/xsched/Kconfig | 85 +++ kernel/xsched/Makefile | 6 + kernel/xsched/cfs.c | 237 ++++++++ kernel/xsched/cfs_quota.c | 98 ++++ kernel/xsched/cgroup.c | 776 +++++++++++++++++++++++++ kernel/xsched/core.c | 526 +++++++++++++++++ kernel/xsched/rt.c | 281 +++++++++ kernel/xsched/vstream.c | 666 +++++++++++++++++++++ 27 files changed, 3855 insertions(+), 4 deletions(-) create mode 100644 drivers/xcu/Makefile create mode 100644 drivers/xcu/xcu_group.c create mode 100644 include/linux/vstream.h create mode 100644 include/linux/xcu_group.h create mode 100644 include/linux/xsched.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/cfs.c create mode 100644 kernel/xsched/cfs_quota.c create mode 100644 kernel/xsched/cgroup.c create mode 100644 kernel/xsched/core.c create mode 100644 kernel/xsched/rt.c create mode 100644 kernel/xsched/vstream.c -- 2.34.1

2 9

[PATCH OLK-6.6 v3 00/46] fuse:io_uring: support fuse over io_uring
by Long Li 17 Nov '25

17 Nov '25

v1 -> v2: Fix some build error for io_uring patchs. v2 -> v3: Modify kabi fixed patchs format Bernd Schubert (19): fuse: rename to fuse_dev_end_requests and make non-static fuse: Move fuse_get_dev to header file fuse: Move request bits fuse: Add fuse-io-uring design documentation fuse: make args->in_args[0] to be always the header fuse: {io-uring} Handle SQEs - register commands fuse: Make fuse_copy non static fuse: Add fuse-io-uring handling into fuse_copy fuse: {io-uring} Make hash-list req unique finding functions non-static fuse: Add io-uring sqe commit and fetch support fuse: {io-uring} Handle teardown of ring entries fuse: {io-uring} Make fuse_dev_queue_{interrupt,forget} non-static fuse: Allow to queue fg requests through io-uring fuse: Allow to queue bg requests through io-uring fuse: {io-uring} Prevent mount point hang on fuse-server termination fuse: block request allocation until io-uring init is complete fuse: enable fuse-over-io-uring fuse: prevent disabling io-uring on active connections fuse: {io-uring} Fix a possible req cancellation race Jens Axboe (1): io_uring: remove dead struct io_submit_state member Joanne Koong (2): fuse: fix uring race condition for null dereference of fc fuse: remove unneeded atomic set in uring creation Long Li (4): io_uring: fix kabi broken in struct io_tw_state io_uring: fix kabi broken in struct io_ring_ctx io_uring: fix kabi broken in struct io_submit_state io_uring: fix kabi broken for header file changed Luis Henriques (2): fuse: fix possible deadlock if rings are never initialized fuse: removed unused function fuse_uring_create() from header Ming Lei (2): io_uring: retain top 8bits of uring_cmd flags for kernel internal use io_uring: cancelable uring_cmd Pavel Begunkov (16): io_uring: split out cmd api into a separate header io_uring/cmd: inline io_uring_cmd_do_in_task_lazy io_uring/cmd: expose iowq to cmds io_uring/cmd: give inline space in request to cmds io_uring/cmd: move io_uring_try_cancel_uring_cmd() io_uring/cmd: kill one issue_flags to tw conversion io_uring/cmd: fix tw <-> issue_flags conversion io_uring/cmd: document some uring_cmd related helpers io_uring: force tw ctx locking io_uring: remove struct io_tw_state::locked io_uring: refactor io_fill_cqe_req_aux io_uring: get rid of intermediate aux cqe caches io_uring: remove current check from complete_post io_uring: refactor io_req_complete_post() io_uring: clean up io_lockdep_assert_cq_locked io_uring/cmd: let cmds to know about dying task Documentation/filesystems/fuse-io-uring.rst | 99 ++ Documentation/filesystems/index.rst | 1 + MAINTAINERS | 1 + drivers/block/ublk_drv.c | 2 +- drivers/nvme/host/ioctl.c | 2 +- fs/fuse/Kconfig | 12 + fs/fuse/Makefile | 1 + fs/fuse/dax.c | 11 +- fs/fuse/dev.c | 174 ++- fs/fuse/dev_uring.c | 1326 +++++++++++++++++++ fs/fuse/dev_uring_i.h | 205 +++ fs/fuse/dir.c | 32 +- fs/fuse/fuse_dev_i.h | 69 + fs/fuse/fuse_i.h | 35 +- fs/fuse/inode.c | 14 +- fs/fuse/xattr.c | 7 +- include/linux/io_uring.h | 73 +- include/linux/io_uring/cmd.h | 140 ++ include/linux/io_uring_types.h | 7 +- include/uapi/linux/fuse.h | 77 +- include/uapi/linux/io_uring.h | 5 +- io_uring/io_uring.c | 175 +-- io_uring/io_uring.h | 34 +- io_uring/net.c | 6 +- io_uring/poll.c | 3 +- io_uring/rw.c | 8 +- io_uring/timeout.c | 8 +- io_uring/uring_cmd.c | 114 +- io_uring/uring_cmd.h | 3 + security/selinux/hooks.c | 2 +- security/smack/smack_lsm.c | 2 +- 31 files changed, 2304 insertions(+), 344 deletions(-) create mode 100644 Documentation/filesystems/fuse-io-uring.rst create mode 100644 fs/fuse/dev_uring.c create mode 100644 fs/fuse/dev_uring_i.h create mode 100644 fs/fuse/fuse_dev_i.h create mode 100644 include/linux/io_uring/cmd.h -- 2.39.2

2 47

[PATCH OLK-6.6] blk-ioinf: fix division by zero caused by inflight overflow in ioinf_qos_write()
by Baokun Li 17 Nov '25

17 Nov '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ID0C1D -------------------------------- Within ioinf_qos_write(), the value provided from user space is stored as s64, whereas params.inflight is defined as u32. If user space supplies inflight=4294967296, the assignment causes params.inflight to overflow to 0, subsequently triggering a divide-by-zero error. To prevent this, inflight values exceeding UINT_MAX are disallowed. Fixes: a63e78514d11 ("blk-ioinf: introduce inflight-based IO QoS controller") Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- block/blk-ioinf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-ioinf.c b/block/blk-ioinf.c index 341be115f1d6..7432d88bf1f0 100644 --- a/block/blk-ioinf.c +++ b/block/blk-ioinf.c @@ -1144,7 +1144,7 @@ static ssize_t ioinf_qos_write(struct kernfs_open_file *of, char *input, params.enabled = !!v; continue; case INF_INFLIGHT: - if (match_u64(&args[0], &v) || v == 0) + if (match_u64(&args[0], &v) || v == 0 || v > UINT_MAX) goto einval; params.inflight = v; continue; -- 2.46.1

2 1

[PATCH OLK-6.6 v9 0/9] Add xcall 2.0 support
by Jinjie Ruan 17 Nov '25

17 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Chanegs in v9: - /proc/xcall/comm, 0644 -> 0640 - /proc/xcall/comm check proc_mkdir("xcall", NULL) return value, use it as the parent proc_dir_entry for "comm". - Consider next task is NULL for xcall_info_switch(). - Return -EINVAL for error path in parse_xcall_command(). - Use bitmap for check_xcall_prog(). - Fix global-out-of-bounds KASAN bug in xcall_prog_register(). 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 | 406 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 139 +++++-- arch/arm64/kernel/xcall/proc.c | 234 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 68 ++-- 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, 1225 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

2 10

[PATCH OLK-6.6 0/2] mm: Fix shmem build and numa fault counting errors
by Ze Zuo 17 Nov '25

17 Nov '25

1. Fix CONFIG_SWAP build errors introduced by ed205f43 ("mm: convert swap_cluster_readahead and swap_vma_readahead to return a folio") 2. Fix numa fault counting error introduced by 3bfa35c ("mm/numa: no task_numa_fault() call if PTE is changed") Ze Zuo (2): mm: fix shmem build errors with CONFIG_SWAP disable mm: fix nr_pages counting for folio in task_numa_fault mm/memory.c | 4 ++-- mm/swap.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) -- 2.25.1

2 3