rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
------------[ cut here ]------------
IRQs not enabled as expected
WARNING: CPU: 0 PID: 22400 at kernel/sched/core.c:2701 try_invoke_on_locked_down_task+0x2bf/0x370 kernel/sched/core.c:2701
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 22400 Comm: syz-executor.1 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540
RIP: 0010:try_invoke_on_locked_down_task+0x2bf/0x370 kernel/sched/core.c:2701
Code: ff d4 41 89 c6 e9 18 ff ff ff 80 3d e9 46 59 09 00 0f 85 6f fe ff ff 48 c7 c7 80 41 4b 88 c6 05 d5 46 59 09 01 e8 d3 4b f4 ff <0f> 0b e9 55 fe ff ff 4c 89 04 24 4c 89 ee 48 89 ef 41 ff d4 4c 8b
RSP: 0000:ffffc90000007bd8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 1ffff92000000f7d RCX: 0000000000000000
RDX: ffff88802c9cc040 RSI: ffffffff815d4eb7 RDI: fffff52000000f6d
RBP: ffff8880a97fc580 R08: 0000000000000001 R09: ffff8880ae620fcb
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8160c5d0
R13: ffffc90000007d00 R14: ffff88802c9cc040 R15: ffff8880ae636c00
 rcu_print_task_stall kernel/rcu/tree_stall.h:269 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:477 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:636 [inline]
 rcu_pending kernel/rcu/tree.c:3489 [inline]
 rcu_sched_clock_irq.cold+0x92e/0xccc kernel/rcu/tree.c:2504
 update_process_times+0x25/0x60 kernel/time/timer.c:1737
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
 tick_sched_timer+0x108/0x290 kernel/time/tick-sched.c:1320
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </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]
 sysvec_apic_timer_interrupt+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:585
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x192/0x4f0 kernel/smp.c:382
Code: 10 8b 7c 24 1c 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 fa f9 ff ff 41 89 c5 eb 07 e8 90 00 0b 00 f3 90 <44> 8b 64 24 48 31 ff 41 83 e4 01 44 89 e6 e8 fb fc 0a 00 45 85 e4
RSP: 0000:ffffc900030ff940 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff9200061ff2c RCX: ffffffff8168bc15
RDX: ffff88802c9cc040 RSI: ffffffff8168bc00 RDI: 0000000000000005
RBP: ffffc900030ffa20 R08: 0000000000000001 R09: ffff8880ae736dc7
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040
 smp_call_function_many_cond+0x1a4/0x990 kernel/smp.c:518
 on_each_cpu_cond_mask+0x50/0x290 kernel/smp.c:766
 __flush_tlb_others arch/x86/include/asm/paravirt.h:74 [inline]
 flush_tlb_others arch/x86/mm/tlb.c:856 [inline]
 flush_tlb_mm_range+0x295/0x4d0 arch/x86/mm/tlb.c:943
 flush_tlb_page arch/x86/include/asm/tlbflush.h:235 [inline]
 ptep_clear_flush+0x12b/0x160 mm/pgtable-generic.c:97
 wp_page_copy+0x919/0x1870 mm/memory.c:2713
 do_wp_page+0x6a1/0x1950 mm/memory.c:2982
 handle_pte_fault mm/memory.c:4243 [inline]
 __handle_mm_fault mm/memory.c:4357 [inline]
 handle_mm_fault+0x2aed/0x43f0 mm/memory.c:4394
 do_user_addr_fault+0x5a2/0xd00 arch/x86/mm/fault.c:1295
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0033:0x40f9e5
Code: Bad RIP value.
RSP: 002b:00007ffc6e5b5b20 EFLAGS: 00010297
RAX: 0000000000000030 RBX: 000000000078bfac RCX: 0000000000000000
RDX: 00000000000000a0 RSI: 00007f9a01edbdb0 RDI: 000000000078bfa8
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 00007f9a01edc700
R10: 00007f9a01edc9d0 R11: 0000000000000202 R12: 0000000000000064
R13: 0000000000000001 R14: 000000000000007c R15: 000000000078bfac
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..