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WARNING: CPU: 1 PID: 168 at kernel/rcu/tree.c:1058 rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1058
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 168 Comm: kworker/u4:3 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound call_usermodehelper_exec_work
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x31e/0x797 kernel/panic.c:231
 __warn.cold+0x20/0x4f kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1058
Code: e0 06 8a e8 1d 8d b2 fb e9 6a ff ff ff 0f 1f 84 00 00 00 00 00 8b 05 26 f5 34 03 85 c0 74 0d 65 8b 05 5b 97 dd 77 85 c0 74 02 <0f> 0b e9 04 ff ff ff 0f 1f 40 00 55 53 48 c7 c3 40 6c 03 00 e8 52
RSP: 0018:ffffc90000da8cb8 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000082 RCX: ffffffff817c45c7
RDX: ffff8880a8934280 RSI: ffffffff8163f5f1 RDI: 0000000000000005
RBP: ffffffff8d64a610 R08: 0000000000000000 R09: ffffffff8b59380f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000082
R13: ffffffff88270ff6 R14: 0000000000000000 R15: ffffffff8a068000
 rcu_irq_enter_irqson+0x76/0x140 kernel/rcu/tree.c:1073
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_hardirqs_off kernel/trace/trace_preemptirq.c:82 [inline]
 trace_hardirqs_off+0x114/0x210 kernel/trace/trace_preemptirq.c:74
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
 _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:159
 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:636
 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline]
 __call_rcu kernel/rcu/tree.c:2880 [inline]
 call_rcu+0x2c/0x800 kernel/rcu/tree.c:2968
 free_zapped_rcu+0xc2/0x2f0 kernel/locking/lockdep.c:5469
 rcu_do_batch kernel/rcu/tree.c:2428 [inline]
 rcu_core+0x5c7/0x1190 kernel/rcu/tree.c:2656
 __do_softirq+0x2ed/0xab4 kernel/softirq.c:298
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x1f3/0x230 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x8c/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 e8 69 fc 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d 43 58 d5 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 65 01 2a f9 65 8b 05 be ec da 77
RSP: 0018:ffffc90000fe78f0 EFLAGS: 00000282
RAX: 1ffffffff13f8d3d RBX: 0000000000000282 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282
RBP: ffff8880ae533928 R08: 0000000000000001 R09: ffffffff8d0bc9ff
R10: fffffbfff1a1793f R11: 0000000000000000 R12: 0000000000000282
R13: 0ebd8fc7a44e8ecc R14: ffff8880ae533928 R15: 0000000000000006
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 get_random_u64+0xf0/0x1f0 drivers/char/random.c:2207
 get_random_long include/linux/random.h:61 [inline]
 get_random_canary include/linux/random.h:83 [inline]
 dup_task_struct kernel/fork.c:909 [inline]
 copy_process+0xad8/0x6a20 kernel/fork.c:1916
 _do_fork+0xe8/0xb10 kernel/fork.c:2428
 kernel_thread+0xb5/0xf0 kernel/fork.c:2480
 call_usermodehelper_exec_work kernel/umh.c:163 [inline]
 call_usermodehelper_exec_work+0xcc/0x180 kernel/umh.c:149
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..