watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz.0.833:7187]
Modules linked in:
irq event stamp: 11894
hardirqs last  enabled at (11893): [<ffff800012287068>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (11893): [<ffff800012287068>] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (11894): [<ffff800012284d44>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (11894): [<ffff800012284d44>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (5174): [<ffff8000081c808c>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (5174): [<ffff8000081c808c>] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599
softirqs last disabled at (5109): [<ffff800008020174>] __do_softirq+0x14/0x20 kernel/softirq.c:605
CPU: 0 PID: 7187 Comm: syz.0.833 Not tainted 6.1.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:424 [inline]
pc : smp_call_function_single+0x40c/0x21f0 kernel/smp.c:787
lr : csd_lock_wait kernel/smp.c:424 [inline]
lr : smp_call_function_single+0x424/0x21f0 kernel/smp.c:787
sp : ffff80001f046f80
x29: ffff80001f0472d0 x28: 0000000000000000 x27: ffff80001f047098
x26: dfff800000000000 x25: ffff80001f0471a0 x24: ffff700003e08e0c
x23: ffff80001f0470c0 x22: 1fffe00018dc9a69 x21: ffff0000c6e4d348
x20: ffff80001f047088 x19: 0000000000000011 x18: 000000008ee16194
x17: 0000000098ccf86e x16: ffff800012288f9c x15: 0000000000000002
x14: 1ffff00002b380b0 x13: 0000000000000000 x12: 0000000000040000
x11: 000000000003ffff x10: ffff8000240b9000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff80001f0470a0 x4 : ffff8000150d6fe0 x3 : ffff80000844d8f4
x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline]
 __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline]
 csd_lock_wait kernel/smp.c:424 [inline]
 smp_call_function_single+0x40c/0x21f0 kernel/smp.c:787
 rcu_barrier+0x2fc/0x5c4 kernel/rcu/tree.c:4070
 wg_pm_notification+0x138/0x154 drivers/net/wireguard/device.c:90
 notifier_call_chain kernel/notifier.c:87 [inline]
 notifier_call_chain_robust+0xdc/0x2a4 kernel/notifier.c:122
 blocking_notifier_call_chain_robust+0x74/0xa8 kernel/notifier.c:347
 pm_notifier_call_chain_robust+0x34/0x64 kernel/power/main.c:90
 snapshot_open+0x184/0x270 kernel/power/user.c:77
 misc_open+0x2f0/0x368 drivers/char/misc.c:143
 chrdev_open+0x3e8/0x4fc fs/char_dev.c:414
 do_dentry_open+0x734/0xfa0 fs/open.c:882
 vfs_open+0x7c/0x90 fs/open.c:1013
 do_open fs/namei.c:3628 [inline]
 path_openat+0x1e14/0x2548 fs/namei.c:3785
 do_filp_open+0x1bc/0x3cc fs/namei.c:3812
 do_sys_openat2+0x128/0x3e0 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585