================================================================== BUG: KCSAN: data-race in pipe_lock / pipe_release read-write to 0xffff888104982a2c of 4 bytes by task 3792 on cpu 1: put_pipe_info fs/pipe.c:704 [inline] pipe_release+0x164/0x1c0 fs/pipe.c:734 __fput+0x292/0x510 fs/file_table.c:317 ____fput+0x11/0x20 fs/file_table.c:350 task_work_run+0x8e/0x110 kernel/task_work.c:164 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888104982a2c of 4 bytes by task 3793 on cpu 0: pipe_lock_nested fs/pipe.c:81 [inline] pipe_lock+0x13/0x40 fs/pipe.c:90 splice_file_to_pipe+0x2a/0x360 fs/splice.c:1015 do_splice+0xc05/0xd90 fs/splice.c:1104 __do_splice fs/splice.c:1144 [inline] __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice+0x2a4/0x380 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+0x2b/0x70 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: 3793 Comm: syz-executor.3 Not tainted 5.18.0-rc5-syzkaller-00028-ga7391ad35724-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================