================================================================== BUG: KCSAN: data-race in pipe_wait / put_pipe_info write to 0xffff888093e0bae8 of 4 bytes by task 13608 on cpu 0: put_pipe_info+0x47/0xb0 fs/pipe.c:704 pipe_release+0x150/0x1a0 fs/pipe.c:734 __fput+0x1e9/0x500 fs/file_table.c:280 ____fput+0x1b/0x30 fs/file_table.c:313 task_work_run+0xba/0x120 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2ae/0x2c0 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x38b/0x3b0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888093e0bae8 of 4 bytes by task 13611 on cpu 1: pipe_lock_nested fs/pipe.c:64 [inline] pipe_lock fs/pipe.c:73 [inline] pipe_wait+0x153/0x1b0 fs/pipe.c:124 splice_from_pipe_next.part.0+0x7d/0x1c0 fs/splice.c:576 splice_from_pipe_next fs/splice.c:555 [inline] iter_file_splice_write+0x1e8/0x830 fs/splice.c:718 do_splice_from fs/splice.c:863 [inline] do_splice+0x6c7/0xc30 fs/splice.c:1170 __do_sys_splice fs/splice.c:1447 [inline] __se_sys_splice fs/splice.c:1427 [inline] __x64_sys_splice+0x1fd/0x210 fs/splice.c:1427 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13611 Comm: syz-executor.5 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================