RBP: 00007f0afcd68fa0 R08: 0027f0a2a63e72a4 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0afcd69038 R14: 00007fffc00cca00 R15: 00007fffc00ccae8
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz.3.456:2104]
Modules linked in:
CPU: 0 PID: 2104 Comm: syz.3.456 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 kernel/locking/spinlock.c:202
Code: 12 48 89 fb 48 c7 c7 b8 46 6d 86 e8 11 a6 f4 fc 48 89 df 48 83 3d 2e af b8 01 00 74 27 e8 83 5f 9b fc 66 90 fb bf 01 00 00 00 <e8> 82 2d 93 fc 65 8b 05 e3 d5 4d 7b 85 c0 74 03 5b 5d c3 e8 83 e1
RSP: 0018:ffffc90000007d68 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff82e547f0 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000007d70 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed103ee04f27 R12: ffff88810acc4e80
R13: dffffc0000000000 R14: ffff8881f7027900 R15: ffff88810acc4e60
FS:  00007f0afb53a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000001136ec000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 expire_timers kernel/time/timer.c:1503 [inline]
 __run_timers+0x627/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_task_switch+0x173/0x790 kernel/sched/core.c:5050
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 a9 af 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 65 08 6c 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90000bc7988 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88812bb19ef8 RCX: 0000000000000000
RDX: 0000000040000002 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc90000bc79d0 R08: ffffffff86e962d3 R09: 1ffffffff0dd2c5a
R10: dffffc0000000000 R11: fffffbfff0dd2c5b R12: ffff8881f70378c0
R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88812bb193c0
 context_switch kernel/sched/core.c:5181 [inline]
 __schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
 preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6714
 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6739
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
 _raw_spin_unlock_irq+0x61/0x70 kernel/locking/spinlock.c:202
 spin_unlock_irq include/linux/spinlock.h:414 [inline]
 get_signal+0x136c/0x1430 kernel/signal.c:2919
 arch_do_signal_or_restart+0xe2/0x1100 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0afcae1159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0afb53a0e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007f0afcd68fa8 RCX: 00007f0afcae1159
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0afcd68fac
RBP: 00007f0afcd68fa0 R08: 0027f0a2a63e72a4 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0afcd69038 R14: 00007fffc00cca00 R15: 00007fffc00ccae8
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 arch/x86/kernel/process.c:729