rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10496 ticks this GP) idle=e3e4/1/0x4000000000000000 softirq=20218/20219 fqs=5215
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1345109          0            0
rcu: 	cputime:     9406      43083           30   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=14845 q=3450 ncpus=2)
CPU: 1 UID: 0 PID: 6757 Comm: syz.2.292 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:unwind_get_return_address+0x0/0x90
Code: f7 49 89 f7 e8 51 12 ba 00 4c 89 f7 4c 89 fe e9 29 ff ff ff e8 a1 d3 31 0a 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000a086a0 EFLAGS: 00000202
RAX: 0000000090c9da01 RBX: ffffc90000a08760 RCX: 0000000000000101
RDX: 0000000000000002 RSI: ffffffff8dfaa584 RDI: ffffc90000a086a8
RBP: ffffc90000a08730 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: ffff88816d5c5880
R13: 00000000000000f0 R14: ffffffff81b0eb70 R15: ffffc90000a086a8
FS:  00007fc897e0e6c0(0000) GS:ffff8882a9289000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5967de5bd0 CR3: 0000000113bd6000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000008d24 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0xfb/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x1d0/0x7d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 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+0x427/0xbe0
Code: 41 c7 84 24 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 06 7a 16 0a e8 61 f7 38 00 fb 49 8d bd b0 16 00 00 <48> 89 f8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 7b 03 00 00 41 80
RSP: 0018:ffffc90007e9f7f0 EFLAGS: 00000202
RAX: 0000000000035979 RBX: 1ffff110478c7784 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8dfaa584 RDI: ffff88816d5c6f30
RBP: ffffc90007e9f850 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: ffff88823c63ae88
R13: ffff88816d5c5880 R14: ffff888102eb3b00 R15: dffffc0000000000
 __schedule+0x1829/0x5740
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x760
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:lock_release+0x2d7/0x3c0
Code: d0 97 11 00 00 00 00 eb b5 e8 65 e0 06 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 55 8b 97 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 52 35 92
RSP: 0018:ffffc90007e9fba8 EFLAGS: 00000282
RAX: a25e5794b7a8a000 RBX: 0000000000000202 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8e21d80f RDI: ffffffff8c28b0e0
RBP: ffff88816d5c6460 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: 0000000000000002
R13: 0000000000000002 R14: ffff888020c4d8a0 R15: ffff88816d5c5880
 __mutex_unlock_slowpath+0xd4/0x6f0
 __se_sys_perf_event_open+0x1914/0x1d40
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc896f9cdd9
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:00007fc897e0e028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc897216090 RCX: 00007fc896f9cdd9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000900
RBP: 00007fc897032d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc897216128 R14: 00007fc897216090 R15: 00007ffde66f81e8
 </TASK>
