rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=533/1/0x4000000000000000 softirq=26546/26547 fqs=5096 
	(t=10500 jiffies g=40397 q=2883)
NMI backtrace for cpu 1
CPU: 1 PID: 15791 Comm: syz-executor.3 Not tainted 5.15.0-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:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:check_kcov_mode+0x2e/0x40 kernel/kcov.c:174
Code: 05 8b 7e 89 c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b 96 a4 15 00 00 85 d2 74 0b 8b 86 80 15 00 00 39 f8 <0f> 94 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 31 c0 65 8b
RSP: 0018:ffffc90004e77a70 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000004 RCX: ffff8880319ad700
RDX: 0000000000000000 RSI: ffff8880319ad700 RDI: 0000000000000003
RBP: ffff88806d69f490 R08: 0000000000000000 R09: 0000000000000004
R10: ffffffff818df6a4 R11: 0000000000000003 R12: ffff8880262161c0
R13: ffff88806d69f4a2 R14: 0000000000000005 R15: 0000000000000001
 write_comp_data kernel/kcov.c:218 [inline]
 __sanitizer_cov_trace_const_cmp1+0x22/0x80 kernel/kcov.c:270
 bpf_common_lru_push_free kernel/bpf/bpf_lru_list.c:509 [inline]
 bpf_lru_push_free+0x174/0x5d0 kernel/bpf/bpf_lru_list.c:556
 htab_lru_push_free kernel/bpf/hashtab.c:1118 [inline]
 htab_lru_map_update_elem+0x4ef/0x8c0 kernel/bpf/hashtab.c:1183
 bpf_map_update_value.isra.0+0x2e8/0x910 kernel/bpf/syscall.c:207
 generic_map_update_batch+0x3f2/0x5b0 kernel/bpf/syscall.c:1396
 bpf_map_do_batch+0x3d5/0x510 kernel/bpf/syscall.c:4207
 __sys_bpf+0x2751/0x5f00 kernel/bpf/syscall.c:4682
 __do_sys_bpf kernel/bpf/syscall.c:4722 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4720 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4720
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3c59615ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3c56b6a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3c59729020 RCX: 00007f3c59615ae9
RDX: 0000000000000038 RSI: 0000000020000280 RDI: 000000000000001a
RBP: 00007f3c5966ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0aeb082f R14: 00007f3c56b6a300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	05 8b 7e 89 c2       	add    $0xc2897e8b,%eax
   5:	81 e2 00 01 00 00    	and    $0x100,%edx
   b:	a9 00 01 ff 00       	test   $0xff0100,%eax
  10:	74 10                	je     0x22
  12:	31 c0                	xor    %eax,%eax
  14:	85 d2                	test   %edx,%edx
  16:	74 15                	je     0x2d
  18:	8b 96 a4 15 00 00    	mov    0x15a4(%rsi),%edx
  1e:	85 d2                	test   %edx,%edx
  20:	74 0b                	je     0x2d
  22:	8b 86 80 15 00 00    	mov    0x1580(%rsi),%eax
  28:	39 f8                	cmp    %edi,%eax
* 2a:	0f 94 c0             	sete   %al <-- trapping instruction
  2d:	c3                   	retq
  2e:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  35:	00 00 00 00
  39:	0f 1f 00             	nopl   (%rax)
  3c:	31 c0                	xor    %eax,%eax
  3e:	65                   	gs
  3f:	8b                   	.byte 0x8b