==================================================================
BUG: KCSAN: data-race in insert_work / wq_worker_running

read-write to 0xffff888237c2c8e4 of 4 bytes by task 14251 on cpu 0:
 wq_worker_running+0x98/0x120 kernel/workqueue.c:1071
 schedule_timeout+0xcc/0x230 kernel/time/timer.c:2167
 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:572 [inline]
 synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:624 [inline]
 rcu_exp_wait_wake kernel/rcu/tree_exp.h:693 [inline]
 rcu_exp_sel_wait_wake+0x554/0x1380 kernel/rcu/tree_exp.h:727
 wait_rcu_exp_gp+0x1e/0x30 kernel/rcu/tree_exp.h:513
 process_one_work+0x434/0x860 kernel/workqueue.c:2600
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2751
 kthread+0x1d7/0x210 kernel/kthread.c:389
 ret_from_fork+0x2e/0x40 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

read to 0xffff888237c2c8e4 of 4 bytes by task 19213 on cpu 1:
 __need_more_worker kernel/workqueue.c:830 [inline]
 insert_work+0x10e/0x190 kernel/workqueue.c:1563
 __queue_work+0x722/0x980 kernel/workqueue.c:1717
 queue_work_on+0x95/0xf0 kernel/workqueue.c:1747
 queue_work include/linux/workqueue.h:506 [inline]
 schedule_work include/linux/workqueue.h:567 [inline]
 __xfrm_state_destroy net/xfrm/xfrm_state.c:697 [inline]
 xfrm_state_put include/net/xfrm.h:815 [inline]
 xfrm_state_find+0x1dff/0x25e0 net/xfrm/xfrm_state.c:1348
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2469 [inline]
 xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:2514 [inline]
 xfrm_resolve_and_create_bundle+0x4cd/0x1a30 net/xfrm/xfrm_policy.c:2807
 xfrm_lookup_with_ifid+0x19e/0x12d0 net/xfrm/xfrm_policy.c:3141
 xfrm_lookup net/xfrm/xfrm_policy.c:3270 [inline]
 xfrm_lookup_route+0x3b/0x100 net/xfrm/xfrm_policy.c:3281
 ip6_dst_lookup_flow+0x98/0xc0 net/ipv6/ip6_output.c:1247
 rawv6_sendmsg+0x94d/0xea0 net/ipv6/raw.c:898
 inet_sendmsg+0x63/0x80 net/ipv4/af_inet.c:830
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg net/socket.c:748 [inline]
 ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2494
 ___sys_sendmsg net/socket.c:2548 [inline]
 __sys_sendmmsg+0x269/0x500 net/socket.c:2634
 __do_sys_sendmmsg net/socket.c:2663 [inline]
 __se_sys_sendmmsg net/socket.c:2660 [inline]
 __x64_sys_sendmmsg+0x57/0x60 net/socket.c:2660
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19213 Comm: syz-executor.5 Not tainted 6.5.0-rc7-syzkaller-00022-ga5e505a99ca7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
==================================================================