------------[ cut here ]------------ WARNING: CPU: 0 PID: 61 at kernel/kthread.c:525 __kthread_bind_mask kernel/kthread.c:525 [inline] WARNING: CPU: 0 PID: 61 at kernel/kthread.c:525 __kthread_bind kernel/kthread.c:538 [inline] WARNING: CPU: 0 PID: 61 at kernel/kthread.c:525 kthread_unpark+0x16b/0x210 kernel/kthread.c:631 Modules linked in: CPU: 0 PID: 61 Comm: kworker/u8:4 Not tainted 6.10.0-rc2-next-20240607-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: netns cleanup_net RIP: 0010:__kthread_bind_mask kernel/kthread.c:525 [inline] RIP: 0010:__kthread_bind kernel/kthread.c:538 [inline] RIP: 0010:kthread_unpark+0x16b/0x210 kernel/kthread.c:631 Code: 00 fc ff df 41 0f b6 04 06 84 c0 0f 85 93 00 00 00 41 80 4d 03 04 4c 89 e7 48 8b 34 24 e8 ed 25 36 0a eb 09 e8 26 d2 33 00 90 <0f> 0b 90 48 89 ef be 08 00 00 00 e8 c5 e3 99 00 f0 80 65 00 fb 4c RSP: 0018:ffffc900015cf760 EFLAGS: 00010293 RAX: ffffffff816290da RBX: 0000000000000000 RCX: ffff888017be1e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88802c0f8e00 R08: ffffffff81629067 R09: 1ffffffff25f92f5 R10: dffffc0000000000 R11: fffffbfff25f92f6 R12: 0000000000000001 R13: ffff88807c473c2c R14: 1ffff1100f88e785 R15: ffff88807c473c00 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0007d2780 CR3: 0000000020172000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kthread_stop+0x17a/0x630 kernel/kthread.c:707 destroy_workqueue+0x136/0xc40 kernel/workqueue.c:5829 wg_destruct+0x1e2/0x2e0 drivers/net/wireguard/device.c:257 netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10693 default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11761 ops_exit_list net/core/net_namespace.c:178 [inline] cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244