================================================================== BUG: KCSAN: data-race in unix_dgram_poll / unix_release_sock write to 0xffff888104a54e30 of 4 bytes by task 624 on cpu 1: unix_release_sock+0x321/0x700 net/unix/af_unix.c:567 unix_release+0x4e/0x70 net/unix/af_unix.c:949 __sock_release net/socket.c:649 [inline] sock_close+0x6c/0x150 net/socket.c:1314 __fput+0x295/0x520 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:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888104a54e30 of 4 bytes by task 685 on cpu 0: unix_dgram_poll+0x6e/0x3e0 net/unix/af_unix.c:3082 sock_poll+0x23e/0x260 net/socket.c:1302 vfs_poll include/linux/poll.h:90 [inline] io_poll_rewait fs/io_uring.c:5283 [inline] io_async_task_func+0x172/0x4d0 fs/io_uring.c:5513 tctx_task_work+0x275/0x4d0 fs/io_uring.c:2159 task_work_run+0xae/0x130 kernel/task_work.c:164 tracehook_notify_signal include/linux/tracehook.h:214 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0xf8/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -> 0x00000068 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 685 Comm: syz-executor.0 Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================