================================================================== BUG: KCSAN: data-race in unix_poll / unix_release_sock write to 0xffff88812e0c0260 of 4 bytes by task 4642 on cpu 0: unix_release_sock+0x30e/0x6a0 net/unix/af_unix.c:609 unix_release+0x4e/0x70 net/unix/af_unix.c:990 __sock_release net/socket.c:650 [inline] sock_close+0x6c/0x150 net/socket.c:1365 __fput+0x292/0x510 fs/file_table.c:317 ____fput+0x11/0x20 fs/file_table.c:350 task_work_run+0x8e/0x110 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 read to 0xffff88812e0c0260 of 4 bytes by task 4643 on cpu 1: unix_poll+0x6d/0x250 net/unix/af_unix.c:3125 sock_poll+0x23e/0x260 net/socket.c:1353 vfs_poll include/linux/poll.h:88 [inline] io_poll_check_events+0x1ee/0x4f0 fs/io_uring.c:6870 io_apoll_task_func+0x36/0x2f0 fs/io_uring.c:6943 handle_tw_list fs/io_uring.c:2930 [inline] tctx_task_work+0x8d0/0xc10 fs/io_uring.c:2959 task_work_run+0x8e/0x110 kernel/task_work.c:177 get_signal+0xeca/0x1020 kernel/signal.c:2634 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0x00000000 -> 0x00000068 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4643 Comm: syz-executor.4 Not tainted 5.19.0-rc5-syzkaller-00187-ge8a4e1c1bb69-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================