================================================================== BUG: KCSAN: data-race in pipe_lock / put_pipe_info write to 0xffff88812fd3d7ec of 4 bytes by task 9673 on cpu 1: put_pipe_info+0x3d/0xe0 fs/pipe.c:702 pipe_release+0x15e/0x170 fs/pipe.c:732 __fput+0x295/0x520 fs/file_table.c:280 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0xae/0x130 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x156/0x190 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 do_syscall_64+0x50/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88812fd3d7ec of 4 bytes by task 9680 on cpu 0: pipe_lock_nested fs/pipe.c:80 [inline] pipe_lock+0x13/0x40 fs/pipe.c:89 splice_file_to_pipe+0x2a/0x360 fs/splice.c:1015 do_splice+0xbe5/0xd50 fs/splice.c:1104 __do_splice fs/splice.c:1144 [inline] __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice+0x2bd/0x3a0 fs/splice.c:1332 __x64_sys_splice+0x74/0x80 fs/splice.c:1332 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000002 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9680 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================