================================================================== BUG: KCSAN: data-race in pipe_double_lock / put_pipe_info write to 0xffff8880a2e4eae8 of 4 bytes by task 23208 on cpu 1: put_pipe_info+0x47/0xb0 fs/pipe.c:704 pipe_release+0x108/0x180 fs/pipe.c:733 __fput+0x1c3/0x4f0 fs/file_table.c:280 ____fput+0x1b/0x30 fs/file_table.c:313 task_work_run+0xf5/0x130 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2ae/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x36e/0x390 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880a2e4eae8 of 4 bytes by task 23210 on cpu 0: pipe_lock_nested fs/pipe.c:64 [inline] pipe_double_lock+0x8e/0x120 fs/pipe.c:100 splice_pipe_to_pipe fs/splice.c:1562 [inline] do_splice+0x216/0xc30 fs/splice.c:1141 __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+0xc7/0x390 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23210 Comm: syz-executor.3 Not tainted 5.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================