rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=801c/1/0x4000000000000000 softirq=113837/113838 fqs=5023
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   932348          0            0
rcu: 	cputime:    34343      18146           54   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=104585 q=8642 ncpus=2)
CPU: 0 UID: 0 PID: 26281 Comm: syz.3.5440 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:deref_stack_reg+0x0/0x230
Code: ff ff 48 89 4c 24 18 e8 9e 45 b9 00 48 8b 4c 24 18 e9 f2 fe ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 20 48 89 54 24 18 49 89 f0
RSP: 0018:ffffc900000075f0 EFLAGS: 00000283
RAX: fffffffffffffff0 RBX: ffffffff90affff0 RCX: 0000000000000000
RDX: ffffc90000007708 RSI: ffffc9000419fce0 RDI: ffffc900000076c8
RBP: dffffc0000000000 R08: ffffc90000007727 R09: 0000000000000000
R10: ffffc90000007718 R11: fffff52000000ee5 R12: ffffc90000007718
R13: 1ffff92000000edb R14: ffffc900000076c8 R15: 1ffffffff215fffe
FS:  00007fd0588c36c0(0000) GS:ffff88818de63000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30323ffc CR3: 00000001ac486000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000d0602
Call Trace:
 <IRQ>
 unwind_next_frame+0x18c6/0x23c0
 arch_stack_walk+0x11b/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+0x192/0x640
 __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 85 99 1b 0a e8 b0 8e 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 70 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000419f6d8 EFLAGS: 00000202
RAX: 00000000000012b9 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8def4b7d RDI: ffffffff8c27b400
RBP: ffffc9000419f730 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: ffff888115320000
R13: dffffc0000000000 R14: ffff8881a8f1ba80 R15: ffff88812103b918
 __schedule+0x15e5/0x52d0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:perf_trace_init+0xa2/0x2d0
Code: e0 e8 7c 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 83 2a f6 ff 4d 39 e7 0f 85 a9 00 00 00 4c 8d
RSP: 0018:ffffc9000419fa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8ec87760 RCX: 0000000000080000
RDX: ffffc9002d89e000 RSI: 0000000000001f45 RDI: 0000000000001f46
RBP: 0000000000000002 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: 000000000000079e
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: 0033:0x7fd05799c799
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:00007fd0588c3028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fd057c15fa0 RCX: 00007fd05799c799
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007fd057a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000d R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd057c16038 R14: 00007fd057c15fa0 R15: 00007ffc5b75d0f8
 </TASK>
