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BUG: KCSAN: data-race in __flush_work / wq_worker_running

read-write to 0xffff888237d2a960 of 4 bytes by task 1919 on cpu 1:
 wq_worker_running+0x96/0xe0 kernel/workqueue.c:880
 schedule_timeout+0x51/0x290 kernel/time/timer.c:1911
 wait_woken+0x35/0x50 kernel/sched/wait.c:459
 sk_stream_wait_connect+0x241/0x3b0 net/core/stream.c:75
 smc_connect_work+0x19c/0x4a0 net/smc/af_smc.c:1534
 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 arch/x86/entry/entry_64.S:306

read to 0xffff888237d2a960 of 4 bytes by task 11471 on cpu 0:
 __need_more_worker kernel/workqueue.c:785 [inline]
 insert_work kernel/workqueue.c:1365 [inline]
 insert_wq_barrier kernel/workqueue.c:2716 [inline]
 start_flush_work kernel/workqueue.c:3034 [inline]
 __flush_work+0x416/0x520 kernel/workqueue.c:3072
 __cancel_work_timer+0x1fe/0x2e0 kernel/workqueue.c:3160
 cancel_work_sync+0x13/0x20 kernel/workqueue.c:3196
 smc_release+0x10c/0x390 net/smc/af_smc.c:328
 __sock_release net/socket.c:650 [inline]
 sock_close+0x6c/0x150 net/socket.c:1365
 __fput+0x245/0x570 fs/file_table.c:320
 ____fput+0x11/0x20 fs/file_table.c:348
 task_work_run+0xde/0x110 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x5ad/0x1740 kernel/exit.c:820
 do_group_exit+0xfe/0x140 kernel/exit.c:950
 get_signal+0xb40/0xc60 kernel/signal.c:2858
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:168
 exit_to_user_mode_prepare kernel/entry/common.c:203 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:296
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11471 Comm: syz-executor.4 Not tainted 6.1.0-rc8-syzkaller-00014-g8ed710da2873-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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