rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=8bc4/1/0x4000000000000000 softirq=160768/160769 fqs=5184
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   965838          0            0
rcu: 	cputime:    34797      17682           57   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=140085 q=3506 ncpus=2)
CPU: 1 UID: 0 PID: 1441 Comm: syz.1.7701 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_next_frame+0x1834/0x23c0
Code: b1 9b ab 11 01 4c 89 f7 e8 b9 0b 00 00 e9 f8 01 00 00 48 8b 54 24 08 48 8d 5a 02 48 83 c2 03 48 89 d8 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 49 0a 00 00 48 89 d0 48 c1 e8 03 0f b6 04 28 84 c0 48
RSP: 0018:ffffc90000a085f8 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffffff9137d0e2 RCX: 0000000000000000
RDX: ffffffff9137d0e3 RSI: 0000000000000001 RDI: ffffc90000a08728
RBP: dffffc0000000000 R08: ffffc90000a08727 R09: 0000000000000000
R10: ffffc90000a08718 R11: fffff520001410e5 R12: ffffc90000a08718
R13: 1ffff920001410db R14: ffffc90000a086c8 R15: 1ffffffff226fa1c
FS:  00007f653f6376c0(0000) GS:ffff8882a9463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81d33e7158 CR3: 0000000111a1a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 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+0x27d/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:generic_exec_single+0x3e7/0x430
Code: 75 11 e8 bc f1 0b 00 48 85 db 75 16 e8 b2 f1 0b 00 eb 15 e8 ab f1 0b 00 e8 86 36 f4 09 48 85 db 74 ea e8 9c f1 0b 00 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 80
RSP: 0018:ffffc9000ab4fa80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9002398a000 RSI: 0000000000001575 RDI: 0000000000001576
RBP: 0000000000000001 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: 1ffff92001569f61
R13: 1ffff92001569f63 R14: 0000000000000000 R15: ffffc9000ab4fb18
 smp_call_function_single+0x341/0x580
 perf_install_in_context+0x5c0/0x930
 __se_sys_perf_event_open+0x192f/0x1d60
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f653e79c799
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:00007f653f637028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f653ea15fa0 RCX: 00007f653e79c799
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f653e832c99 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f653ea16038 R14: 00007f653ea15fa0 R15: 00007ffe560324d8
 </TASK>
