rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=1d64/1/0x4000000000000000 softirq=27122/27122 fqs=4542
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   991123          0            0
rcu: 	cputime:    32102      20376           93   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=19197 q=2792 ncpus=2)
CPU: 1 UID: 0 PID: 9061 Comm: syz.0.945 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:strlen+0x32/0x70
Code: 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 <48> ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89 d9 80 e1 07
RSP: 0018:ffffc900001e01b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8b8bd2a0 RCX: d412542acdd09500
RDX: ffffffff8172c195 RSI: ffffffff8e139ea0 RDI: ffffffff8b8bd2a0
RBP: ffffc900001e02e0 R08: ffffc9000678fad0 R09: 0000000000000000
R10: ffffc900001e0478 R11: fffff5200003c091 R12: 1ffff9200003c044
R13: ffffffff8172c195 R14: dffffc0000000000 R15: ffffffffffffffff
FS:  00007f1f9af9c6c0(0000) GS:ffff8881a3c19000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f9a211e19 CR3: 0000000106ec4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_lock+0xc2/0x3b0
 lock_release+0x3b2/0x3e0
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 dst_alloc+0x105/0x170
 icmp6_dst_alloc+0x75/0x420
 ndisc_send_skb+0x41f/0x1440
 addrconf_rs_timer+0x369/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__mutex_lock+0x811/0x1360
Code: 8b 44 24 60 42 80 3c 28 00 74 0a 48 8b 7c 24 20 e8 74 6e a8 f6 4d 8b 6c 24 50 4c 89 f7 4c 89 e6 e8 b4 bd 21 f6 f6 44 24 0c cc <0f> 85 4e 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 48 80
RSP: 0018:ffffc9000678f8c0 EFLAGS: 00000246
RAX: d412542acdd09500 RBX: ffffc9000678f9a0 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9b7306 RDI: 00000000ffffffff
RBP: ffffc9000678fa68 R08: ffffffff8fa38937 R09: 1ffffffff1f47126
R10: dffffc0000000000 R11: fffffbfff1f47127 R12: ffffffff8e19d3e0
R13: ffffc9000678f9c0 R14: ffff888125f79cc0 R15: ffff888125f7a618
 perf_trace_init+0x50/0x2d0
 perf_tp_event_init+0x8d/0x120
 perf_try_init_event+0x17f/0x870
 perf_event_alloc+0x133e/0x2be0
 __se_sys_perf_event_open+0x772/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f9a18eba9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1f9af9c038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f1f9a3d5fa0 RCX: 00007f1f9a18eba9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f1f9a211e19 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1f9a3d6038 R14: 00007f1f9a3d5fa0 R15: 00007ffeb6e4d078
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104982812533 wd_nsec: 104982814920
