rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=81d4/1/0x4000000000000000 softirq=58029/58031 fqs=5185
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1008590          0            0
rcu: 	cputime:    34467      18012           46   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=49737 q=2779 ncpus=2)
CPU: 1 UID: 0 PID: 16235 Comm: syz.4.3137 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+0x50/0x2e0
Code: 8b 05 94 d4 7a 11 48 89 44 24 30 0f 1f 44 00 00 65 8b 05 97 d4 7a 11 83 f8 08 0f 83 77 01 00 00 89 c0 48 0f a3 05 00 29 70 0e <73> 0d e8 d9 29 09 00 84 c0 0f 84 bc 01 00 00 83 3d fa 5b 70 0e 00
RSP: 0018:ffffc90000a083e0 EFLAGS: 00000297
RAX: 0000000000000001 RBX: ffffffff8a53d7d5 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e75e5e0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000a08578 R11: ffffffff81b0c390 R12: 0000000000000002
R13: ffffffff8e75e5e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f07720ac6c0(0000) GS:ffff8882a945a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1717bad480 CR3: 0000000114f7e000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x2bc/0x650
 dst_alloc+0x105/0x170
 icmp6_dst_alloc+0x75/0x440
 ndisc_send_skb+0x44a/0x1670
 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:finish_task_switch+0x245/0x920
Code: 00 00 48 85 db 0f 85 e8 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 49 83 c4 48 4c 89 e7 e8 d5 65 1c 0a e8 30 81 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 80 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900045c77d8 EFLAGS: 00000202
RAX: 000000000005ad15 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8def9047 RDI: ffffffff8c27ca00
RBP: ffffc900045c7830 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff888112239d40
R13: dffffc0000000000 R14: ffff8881157cd7c0 R15: ffff88823c63b998
 __schedule+0x15e5/0x52d0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x44/0x3d0
Code: 8b 05 30 a4 7a 11 48 89 44 24 28 0f 1f 44 00 00 65 8b 05 33 a4 7a 11 83 f8 08 0f 83 56 02 00 00 89 c0 48 0f a3 05 9c f8 6f 0e <73> 0d e8 75 f9 08 00 84 c0 0f 84 94 02 00 00 83 3d 96 2b 70 0e 00
RSP: 0018:ffffc900045c7b78 EFLAGS: 00000297
RAX: 0000000000000001 RBX: ffff888112239d40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff81f98a11 RDI: ffff888021c4f0a8
RBP: ffffc900045c7cf0 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: 1ffff920008b8f84
R13: ffffffff81f98a11 R14: ffff888021c4f0a8 R15: ffff888021c4f040
 __mutex_unlock_slowpath+0xd3/0x7d0
 __se_sys_perf_event_open+0x1941/0x1d60
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f077119c819
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:00007f07720ac028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f0771415fa0 RCX: 00007f077119c819
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000200
RBP: 00007f0771232c91 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0771416038 R14: 00007f0771415fa0 R15: 00007fffe8531c78
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104753410372 wd_nsec: 104753412478
