This is a note to let you know that I've just added the patch titled arm64: add support for TIF_NOTIFY_SIGNAL to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-add-support-for-tif_notify_signal.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From eaa379f10805fdf0f096bfd32d3697f7af0dc185 Mon Sep 17 00:00:00 2001 From: Jens Axboe <axboe@xxxxxxxxx> Date: Thu, 22 Oct 2020 20:09:23 -0600 Subject: arm64: add support for TIF_NOTIFY_SIGNAL From: Jens Axboe <axboe@xxxxxxxxx> [ Upstream commit 192caabd4dd92c98d23ed4334d7596af05af2fb4 ] Wire up TIF_NOTIFY_SIGNAL handling for arm64. Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Acked-by: Will Deacon <will@xxxxxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/include/asm/thread_info.h | 5 ++++- arch/arm64/kernel/signal.c | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -68,6 +68,7 @@ void arch_release_task_struct(struct tas #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */ #define TIF_FSCHECK 5 /* Check FS is USER_DS on return */ #define TIF_MTE_ASYNC_FAULT 6 /* MTE Asynchronous Tag Check Fault */ +#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ #define TIF_SYSCALL_TRACE 8 /* syscall trace active */ #define TIF_SYSCALL_AUDIT 9 /* syscall auditing */ #define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */ @@ -98,10 +99,12 @@ void arch_release_task_struct(struct tas #define _TIF_32BIT (1 << TIF_32BIT) #define _TIF_SVE (1 << TIF_SVE) #define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT) +#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ - _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT) + _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT | \ + _TIF_NOTIFY_SIGNAL) #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -938,7 +938,7 @@ asmlinkage void do_notify_resume(struct (void __user *)NULL, current); } - if (thread_flags & _TIF_SIGPENDING) + if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) do_signal(regs); if (thread_flags & _TIF_NOTIFY_RESUME) { Patches currently in stable-queue which might be from axboe@xxxxxxxxx are queue-5.10/x86-process-setup-io_threads-more-like-normal-user-space-threads.patch queue-5.10/powerpc-add-support-for-tif_notify_signal.patch queue-5.10/eventfd-provide-a-eventfd_signal_mask-helper.patch queue-5.10/fs-provide-locked-helper-variant-of-close_fd_get_file.patch queue-5.10/relay-fix-type-mismatch-when-allocating-memory-in-re.patch queue-5.10/eventfd-change-int-to-__u64-in-eventfd_signal-ifndef.patch queue-5.10/io_uring-pass-in-epoll_uring_wake-for-eventfd-signaling-and-wakeups.patch queue-5.10/blk-mq-fix-possible-memleak-when-register-hctx-faile.patch queue-5.10/fix-handling-of-nd-depth-on-lookup_cached-failures-in-try_to_unlazy.patch queue-5.10/net-provide-__sys_shutdown_sock-that-takes-a-socket.patch queue-5.10/task_work-unconditionally-run-task_work-from-get_signal.patch queue-5.10/openrisc-add-support-for-tif_notify_signal.patch queue-5.10/signal-add-task_sigpending-helper.patch queue-5.10/net-remove-cmsg-restriction-from-io_uring-based-send-recvmsg-calls.patch queue-5.10/alpha-add-support-for-tif_notify_signal.patch queue-5.10/nios32-add-support-for-tif_notify_signal.patch queue-5.10/ia64-don-t-call-handle_signal-unless-there-s-actually-a-signal-queued.patch queue-5.10/task_work-remove-legacy-twa_signal-path.patch queue-5.10/revert-proc-don-t-allow-async-path-resolution-of-proc-self-components.patch queue-5.10/m68k-add-support-for-tif_notify_signal.patch queue-5.10/s390-add-support-for-tif_notify_signal.patch queue-5.10/um-add-support-for-tif_notify_signal.patch queue-5.10/tools-headers-uapi-sync-openat2.h-with-the-kernel-sources.patch queue-5.10/kernel-provide-create_io_thread-helper.patch queue-5.10/iov_iter-add-helper-to-save-iov_iter-state.patch queue-5.10/arc-unbork-5.11-bootup-fix-snafu-in-_tif_notify_signal-handling.patch queue-5.10/arch-ensure-parisc-powerpc-handle-pf_io_worker-in-copy_thread.patch queue-5.10/csky-add-support-for-tif_notify_signal.patch queue-5.10/arm-add-support-for-tif_notify_signal.patch queue-5.10/kernel-stop-masking-signals-in-create_io_thread.patch queue-5.10/fs-expose-lookup_cached-through-openat2-resolve_cached.patch queue-5.10/task_work-add-helper-for-more-targeted-task_work-canceling.patch queue-5.10/nds32-add-support-for-tif_notify_signal.patch queue-5.10/signal-kill-jobctl_task_work.patch queue-5.10/hexagon-add-support-for-tif_notify_signal.patch queue-5.10/sh-add-support-for-tif_notify_signal.patch queue-5.10/riscv-add-support-for-tif_notify_signal.patch queue-5.10/h8300-add-support-for-tif_notify_signal.patch queue-5.10/io_uring-import-5.15-stable-io_uring.patch queue-5.10/sparc-add-support-for-tif_notify_signal.patch queue-5.10/blktrace-fix-output-non-blktrace-event-when-blk_clas.patch queue-5.10/eventpoll-add-epoll_uring_wake-poll-wakeup-flag.patch queue-5.10/parisc-add-support-for-tif_notify_signal.patch queue-5.10/entry-add-support-for-tif_notify_signal.patch queue-5.10/x86-wire-up-tif_notify_signal.patch queue-5.10/task_work-use-tif_notify_signal-if-available.patch queue-5.10/drbd-fix-an-invalid-memory-access-caused-by-incorrec.patch queue-5.10/kernel-don-t-call-do_exit-for-pf_io_worker-threads.patch queue-5.10/kernel-allow-fork-with-tif_notify_signal-pending.patch queue-5.10/pata_ipx4xx_cf-fix-unsigned-comparison-with-less-tha.patch queue-5.10/mips-add-support-for-tif_notify_signal.patch queue-5.10/xtensa-add-support-for-tif_notify_signal.patch queue-5.10/c6x-add-support-for-tif_notify_signal.patch queue-5.10/microblaze-add-support-for-tif_notify_signal.patch queue-5.10/net-add-accept-helper-not-installing-fd.patch queue-5.10/ia64-add-support-for-tif_notify_signal.patch queue-5.10/arm64-add-support-for-tif_notify_signal.patch queue-5.10/arc-add-support-for-tif_notify_signal.patch queue-5.10/revert-proc-don-t-allow-async-path-resolution-of-proc-thread-self-components.patch queue-5.10/fs-make-do_renameat2-take-struct-filename.patch queue-5.10/kernel-remove-checking-for-tif_notify_signal.patch queue-5.10/arch-setup-pf_io_worker-threads-like-pf_kthread.patch queue-5.10/nvme-pci-fix-mempool-alloc-size.patch queue-5.10/fs-add-support-for-lookup_cached.patch