================================================================== BUG: KCSAN: data-race in pipe_lock / pipe_release write to 0xffff88811ea5096c of 4 bytes by task 12971 on cpu 0: put_pipe_info fs/pipe.c:707 [inline] pipe_release+0x186/0x1e0 fs/pipe.c:737 __fput+0x1df/0x460 fs/file_table.c:281 ____fput+0x11/0x20 fs/file_table.c:314 task_work_run+0x8e/0x110 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:216 [inline] __prepare_exit_to_usermode+0x1c8/0x230 arch/x86/entry/common.c:246 __syscall_return_slowpath arch/x86/entry/common.c:329 [inline] do_syscall_64+0xb9/0x120 arch/x86/entry/common.c:368 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88811ea5096c of 4 bytes by task 12974 on cpu 1: pipe_lock_nested fs/pipe.c:65 [inline] pipe_lock+0x13/0x40 fs/pipe.c:74 splice_from_pipe fs/splice.c:660 [inline] generic_splice_sendpage+0x6e/0xb0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] do_splice+0xab5/0x1060 fs/splice.c:1144 __do_sys_splice fs/splice.c:1419 [inline] __se_sys_splice fs/splice.c:1401 [inline] __x64_sys_splice+0xf2/0x190 fs/splice.c:1401 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 12974 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================