rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10651 ticks this GP) idle=b42/1/0x4000000000000002 softirq=53910/53912 fqs=5155 
	(t=10500 jiffies g=59809 q=320)
NMI backtrace for cpu 0
CPU: 0 PID: 15734 Comm: syz-executor.3 Not tainted 5.5.0-rc1-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+0x197/0x210 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2827 [inline]
 rcu_sched_clock_irq.cold+0x509/0xc02 kernel/rcu/tree.c:2271
 update_process_times+0x2d/0x70 kernel/time/timer.c:1726
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:102 [inline]
RIP: 0010:__local_bh_enable_ip+0x18e/0x270 kernel/softirq.c:196
Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 df 00 00 00 48 83 3d 97 bf 4b 08 00 0f 84 8f 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 a3 a8 ba 7e 85 c0 74 7f 5b 41 5c 41 5d 5d c3 80 3d d2 9c
RSP: 0000:ffffc900046e7ba8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13266ad RBX: 0000000000000200 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff888095450954
RBP: ffffc900046e7bc0 R08: ffff8880954500c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff812aeb53
R13: ffff8880954500c0 R14: 00007f5078e939c4 R15: ffff8880954500c0
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 fpregs_unlock arch/x86/include/asm/fpu/api.h:41 [inline]
 copy_fpstate_to_sigframe+0x310/0xbf0 arch/x86/kernel/fpu/signal.c:195
 get_sigframe.isra.0.constprop.0+0x45f/0x8c0 arch/x86/kernel/signal.c:281
 __setup_rt_frame arch/x86/kernel/signal.c:464 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:706 [inline]
 handle_signal arch/x86/kernel/signal.c:750 [inline]
 do_signal+0xace/0x1700 arch/x86/kernel/signal.c:817
 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:160
 prepare_exit_to_usermode+0x321/0x3a0 arch/x86/entry/common.c:195
 ret_from_intr+0x26/0x36
RIP: 0033:0x4057d9
Code: d0 ff ff ff 01 48 8b 7c 24 28 c7 44 24 34 00 00 00 00 e8 4a d3 01 00 85 c0 75 23 48 6b 44 24 20 18 8b 7c 24 1c 48 03 44 24 38 <48> 8b 48 10 48 8b 50 08 48 8b 30 e8 e7 ee 00 00 89 44 24 34 64 f0
RSP: 002b:00007f5078e93a70 EFLAGS: 00010206
RAX: 00000000290f0e00 RBX: 0000000000000007 RCX: 0000000000414707
RDX: 6a15009ee366f27e RSI: 0000000000000000 RDI: 0000000000000008
RBP: 000000000075bf20 R08: 00007f5078e93a70 R09: 000000000075bf20
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f5078e946d4
R13: 00000000004cae75 R14: 00000000004e4378 R15: 00000000ffffffff