rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=9b64/1/0x4000000000000000 softirq=177804/177804 fqs=4785
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1111459          0            0
rcu: 	cputime:    35289      17180           79   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=129261 q=16865 ncpus=2)
CPU: 1 UID: 0 PID: 1343 Comm: syz.8.10942 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_release+0x0/0x3a0
Code: be 00 00 50 00 e9 70 fe ff ff 41 be 2f 00 00 00 e9 0e ff ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 49 89 f5 49
RSP: 0018:ffffc90000a08470 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 00007f845b608b01 RCX: 0000000000000102
RDX: ffffffff9059a500 RSI: ffffffff8174c0e5 RDI: ffffffff8e35a3a0
RBP: dffffc0000000000 R08: 0000000000000022 R09: ffffffff8e35a3a0
R10: ffffc90000a08598 R11: ffffffff81ae5bd0 R12: 00007f84597f6028
R13: ffffc900052f0000 R14: ffffc90000a08548 R15: ffffffff8174c0e5
FS:  00007f84597f66c0(0000) GS:ffff8882a9928000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdb64be1198 CR3: 000000011349a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x1aaa/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+0x370/0x6e0
 dst_alloc+0x105/0x170
 icmp6_dst_alloc+0x75/0x420
 ndisc_send_skb+0x42d/0x14e0
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x5a0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x7c0
 __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:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 f2 17 f6 e8 9e 7a 50 f6 fb bf 01 00 00 00 <e8> e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 7c 50 f6 bf 01
RSP: 0018:ffffc900052f7950 EFLAGS: 00000202
RAX: 00000000000029f7 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000006 RSI: ffffffff8dad379b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced577 R09: 1ffffffff1f9daae
R10: dffffc0000000000 R11: fffffbfff1f9daaf R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x94/0x3a0
Code: 85 0d 02 00 00 65 4c 8b 3d 91 1e 30 11 41 83 bf 2c 0b 00 00 00 0f 85 f7 01 00 00 49 81 3e c0 33 93 93 0f 84 ea 01 00 00 9c 5b <fa> 48 c7 c7 f3 06 af 8d e8 af 78 d9 09 65 ff 05 08 64 30 11 c7 44
RSP: 0018:ffffc900052f7a78 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000206 RCX: 0000000080000001
RDX: ffffc9000b661000 RSI: ffffffff8be73ee0 RDI: ffffffff8be73ea0
RBP: ffffc900052f7bf0 R08: ffff888115e8c567 R09: 1ffff11022bd18ac
R10: dffffc0000000000 R11: ffffed1022bd18ad R12: 1ffff92000a5ef64
R13: ffffffff81f7b8ae R14: ffff88816dc494a8 R15: ffff88810ca31d40
 __mutex_unlock_slowpath+0xd3/0x7d0
 perf_ioctl+0x18e/0x2000
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f845b59acb9
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:00007f84597f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f845b815fa0 RCX: 00007f845b59acb9
RDX: 0000000000000004 RSI: 0000000040042408 RDI: 0000000000000005
RBP: 00007f845b608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f845b816038 R14: 00007f845b815fa0 R15: 00007ffea829da18
 </TASK>
