rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=b924/1/0x4000000000000000 softirq=172076/172076 fqs=5221
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1096035          0            0
rcu: 	cputime:    34317      18182           42   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=175033 q=4615 ncpus=2)
CPU: 1 UID: 0 PID: 4221 Comm: syz.4.7615 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_acquire+0xac/0x2e0
Code: c1 00 00 00 65 8b 05 53 97 57 11 85 c0 0f 85 b2 00 00 00 65 48 8b 05 9b 51 57 11 83 b8 14 0b 00 00 00 0f 85 9d 00 00 00 9c 5b <fa> 48 c7 c7 14 bf d0 8d e8 37 ef ed 09 65 ff 05 20 97 57 11 45 31
RSP: 0018:ffffc90000a08160 EFLAGS: 00000246
RAX: ffff88816f2a1d00 RBX: 0000000000000246 RCX: 0000000000000302
RDX: 0000000000000000 RSI: ffffffff8175b9b2 RDI: 1ffffffff1cac024
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000a082f8 R11: ffffffff81af6830 R12: 0000000000000002
R13: ffffffff8e560120 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc3d4ec16c0(0000) GS:ffff8882a96a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4fd3f71288 CR3: 00000001aeb32000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000d0602
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0xee/0x890
 __dev_queue_xmit+0x4cb/0x32f0
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbaa/0x14e0
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__update_load_avg_blocked_se+0x0/0x640
Code: e8 25 52 92 00 48 8b 3b 5b e9 4c 8c 86 00 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 55 41 57 41 56 41 55 41 54 53 48 83 ec 20 48 89 f3 49
RSP: 0018:ffffc900072ef618 EFLAGS: 00000246
RAX: 1ffff11035db1410 RBX: ffff88816f2a0000 RCX: 1ffff92000e5dec8
RDX: 0000000000000001 RSI: ffff88816f2a0080 RDI: 000000eab1beb000
RBP: ffffc900072ef6c8 R08: ffff888178a13103 R09: 1ffff1102f142620
R10: dffffc0000000000 R11: ffffffff81978d10 R12: 1ffff1102de5401a
R13: ffff88816f2a00d1 R14: dffffc0000000000 R15: ffff8881aed8a000
 task_dead_fair+0x1ed/0x3d0
 finish_task_switch+0x4a7/0x920
 __schedule+0x1546/0x5070
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:perf_trace_init+0xa2/0x2d0
Code: 60 fe 5c 8e 0f 84 75 01 00 00 4c 89 24 24 4c 8d 63 30 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 17 01 00 00 4d 63 24 24 <4c> 89 ff 4c 89 e6 e8 53 3b f6 ff 4d 39 e7 0f 85 a9 00 00 00 4c 8d
RSP: 0018:ffffc900072efa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8fb84040 RCX: ffff88816f2a1d00
RDX: 0000000000000000 RSI: 0000000000000ded RDI: 0000000000000596
RBP: 0000000000000002 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: 0000000000000dec
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000596
 perf_tp_event_init+0x8d/0x120
 perf_try_init_event+0x17f/0x870
 perf_event_alloc+0x1444/0x2e30
 __se_sys_perf_event_open+0x7a9/0x1d60
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3d3f9acb9
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:00007fc3d4ec1028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc3d4215fa0 RCX: 00007fc3d3f9acb9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007fc3d4008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000e R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc3d4216038 R14: 00007fc3d4215fa0 R15: 00007ffec9a28bb8
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105038928567 wd_nsec: 105038930021
