==================================================================
BUG: KCSAN: data-race in prandom_seed / prandom_u32

read to 0xffff888237c28850 of 8 bytes by task 1911 on cpu 1:
 prandom_seed+0xd3/0x270 lib/random32.c:439
 addrconf_dad_begin net/ipv6/addrconf.c:3975 [inline]
 addrconf_dad_work+0x265/0xbb0 net/ipv6/addrconf.c:4100
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

write to 0xffff888237c28850 of 8 bytes by task 2027 on cpu 0:
 siprand_u32 lib/random32.c:372 [inline]
 prandom_u32+0x11f/0x190 lib/random32.c:387
 tcp_v4_connect+0x98f/0xab0 net/ipv4/tcp_ipv4.c:307
 __inet_stream_connect+0x159/0x6d0 net/ipv4/af_inet.c:660
 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:5687 [inline]
 io_issue_sqe+0x4ceb/0x8690 fs/io_uring.c:7184
 __io_queue_sqe+0x1d/0x1b0 fs/io_uring.c:7512
 io_req_task_submit+0x8b/0xb0 fs/io_uring.c:2578
 handle_tw_list fs/io_uring.c:2463 [inline]
 tctx_task_work+0x80b/0xa30 fs/io_uring.c:2497
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 get_signal+0xeca/0x1020 kernel/signal.c:2641
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:867
 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+0x44/0xae

value changed: 0x37433bce2c2d67d3 -> 0xeea2ab79844c96ec

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2027 Comm: syz-executor.2 Not tainted 5.18.0-rc5-syzkaller-00178-g30c8e80f7932-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
syz-executor.2 (2027) used greatest stack depth: 11328 bytes left