syzbot

==================================================================
BUG: KCSAN: data-race in tcp_disconnect / tcp_poll

write to 0xffff888134758d2a of 1 bytes by task 10962 on cpu 1:
 tcp_disconnect+0x5ee/0xef0 net/ipv4/tcp.c:3018
 __inet_stream_connect+0x621/0x6e0 net/ipv4/af_inet.c:712
 inet_stream_connect+0x44/0x70 net/ipv4/af_inet.c:724
 __sys_connect_file+0xd3/0xe0 net/socket.c:1900
 io_connect fs/io_uring.c:5353 [inline]
 io_issue_sqe+0x41a9/0x9610 fs/io_uring.c:6792
 io_wq_submit_work+0x1c5/0x370 fs/io_uring.c:6916
 io_worker_handle_work+0x51b/0xc10 fs/io-wq.c:588
 io_wqe_worker+0x1bc/0x4f0 fs/io-wq.c:639
 ret_from_fork+0x1f/0x30

read to 0xffff888134758d2a of 1 bytes by task 10955 on cpu 0:
 tcp_poll+0xfa/0x580 net/ipv4/tcp.c:539
 sock_poll+0x23e/0x260 net/socket.c:1306
 vfs_poll include/linux/poll.h:88 [inline]
 __io_arm_poll_handler+0x19c/0x8d0 fs/io_uring.c:5755
 io_arm_poll_handler+0x1fb/0x360 fs/io_uring.c:5839
 io_queue_sqe_arm_apoll fs/io_uring.c:7075 [inline]
 __io_queue_sqe+0x1a3/0x6a0 fs/io_uring.c:7113
 io_queue_sqe+0x46/0x550 fs/io_uring.c:7140
 io_submit_sqe+0x796/0x4b34 fs/io_uring.c:7348
 io_submit_sqes+0x25f/0x560 fs/io_uring.c:7454
 __do_sys_io_uring_enter fs/io_uring.c:10162 [inline]
 __se_sys_io_uring_enter+0x212/0xb00 fs/io_uring.c:10104
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10104
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x03 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10955 Comm: syz-executor.1 Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================