================================================================== BUG: KCSAN: data-race in unix_dgram_poll / unix_release_sock write to 0xffff888102f36270 of 1 bytes by task 16772 on cpu 1: unix_release_sock+0x2bf/0x6f0 net/unix/af_unix.c:557 unix_release+0x2f/0x50 net/unix/af_unix.c:867 __sock_release net/socket.c:648 [inline] sock_close+0x6c/0x150 net/socket.c:1300 __fput+0x25b/0x4e0 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+0x49/0x90 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888102f36270 of 1 bytes by task 16768 on cpu 0: unix_dgram_poll+0xdf/0x3e0 net/unix/af_unix.c:2749 sock_poll+0x23e/0x260 net/socket.c:1288 vfs_poll include/linux/poll.h:90 [inline] __io_arm_poll_handler+0x1af/0x5c0 fs/io_uring.c:5147 io_arm_poll_handler+0x2e8/0x6e0 fs/io_uring.c:5221 __io_queue_sqe+0x135/0x360 fs/io_uring.c:6483 io_queue_sqe fs/io_uring.c:6507 [inline] io_submit_sqe+0x1695/0x3400 fs/io_uring.c:6662 io_submit_sqes+0x822/0xe50 fs/io_uring.c:6778 __do_sys_io_uring_enter fs/io_uring.c:9389 [inline] __se_sys_io_uring_enter+0x1c7/0xa20 fs/io_uring.c:9332 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9332 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00 -> 0x03 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 16768 Comm: syz-executor.4 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================