syzbot

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BUG: KCSAN: data-race in dccp_disconnect / dccp_poll

write to 0xffff88818817f162 of 1 bytes by task 21502 on cpu 0:
 dccp_disconnect+0x3fa/0x500 net/dccp/proto.c:284
 __inet_stream_connect+0x5cc/0x6d0 net/ipv4/af_inet.c:717
 inet_stream_connect+0x44/0x70 net/ipv4/af_inet.c:729
 __sys_connect_file+0xd3/0xe0 net/socket.c:1976
 io_connect+0x19e/0x360 io_uring/net.c:1424
 io_issue_sqe+0x33a/0x850 io_uring/io_uring.c:1743
 io_wq_submit_work+0x37b/0x520 io_uring/io_uring.c:1820
 io_worker_handle_work+0x549/0xbf0 io_uring/io-wq.c:587
 io_wqe_worker+0x1ff/0x8e0 io_uring/io-wq.c:632
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

read to 0xffff88818817f162 of 1 bytes by task 21498 on cpu 1:
 dccp_poll+0xe0/0x3c0 net/dccp/proto.c:325
 sock_poll+0x23e/0x260 net/socket.c:1353
 vfs_poll include/linux/poll.h:88 [inline]
 __io_arm_poll_handler+0x209/0x950 io_uring/poll.c:585
 io_arm_poll_handler+0x43f/0x570 io_uring/poll.c:707
 io_wq_submit_work+0x3fa/0x520 io_uring/io_uring.c:1835
 io_worker_handle_work+0x549/0xbf0 io_uring/io-wq.c:587
 io_wqe_worker+0x1ff/0x8e0 io_uring/io-wq.c:632
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

value changed: 0x03 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21498 Comm: iou-wrk-21497 Not tainted 6.1.0-rc8-syzkaller-00148-g0d1409e4ff08-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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