clocksource: Long readout interval, skipping watchdog check: cs_nsec: 22805558419 wd_nsec: 22805558514
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10491 ticks this GP) idle=004c/1/0x4000000000000000 softirq=58584/59358 fqs=5089
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1212188       1129            0
rcu: 	cputime:    32673      19816           50   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=48389 q=4060 ncpus=2)
CPU: 0 UID: 0 PID: 14733 Comm: syz.5.3570 Not tainted 6.16.0-syzkaller-12063-g37816488247d-dirty #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:rcu_read_unlock_special+0x87/0x5e0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 52 d8 f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000073e0 EFLAGS: 00000206
RAX: 471bc006f2583c00 RBX: 1ffff92000000e84 RCX: 471bc006f2583c00
RDX: 0000000000000002 RSI: ffffffff8d9b494b RDI: ffffffff8be32680
RBP: ffffc900000074d8 R08: ffffffff8fa34737 R09: 1ffffffff1f468e6
R10: dffffc0000000000 R11: fffffbfff1f468e7 R12: ffffffff8e13f201
R13: dffffc0000000000 R14: 0000000000000246 R15: ffff888020fe8000
FS:  00007facd08b86c0(0000) GS:ffff8880b8621000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2faea2 CR3: 0000000029e18000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 __alloc_skb+0x112/0x2d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x369/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unwind_get_return_address+0x22/0x90
Code: 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 48 89 f8 48 c1 e8 03 42 0f b6 04 30 <84> c0 75 4c 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80
RSP: 0018:ffffc900031ceba8 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffc900031cebc8 RCX: 471bc006f2583c00
RDX: 0000000000000006 RSI: ffffffff8d9b494b RDI: ffffc900031cebc8
RBP: ffffc900031cec50 R08: ffffffff8fa34737 R09: 1ffffffff1f468e6
R10: dffffc0000000000 R11: fffffbfff1f468e7 R12: ffff888020fe8000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc900031cebc8
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 synchronize_rcu_expedited+0x3b9/0x730
 synchronize_rcu+0x11a/0x310
 rcu_sync_enter+0x1da/0x310
 percpu_down_write+0x60/0x330
 register_for_each_vma+0x32/0xc30
 uprobe_register+0x7f2/0x950
 probe_event_enable+0x36a/0xa80
 perf_trace_event_init+0x4e1/0x9d0
 perf_uprobe_init+0x12e/0x1a0
 perf_uprobe_event_init+0xe6/0x180
 perf_try_init_event+0x17f/0x870
 perf_event_alloc+0x133e/0x2be0
 __se_sys_perf_event_open+0x5a1/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faccf98ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007facd08b8038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007faccfbb5fa0 RCX: 00007faccf98ebe9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000200000000000
RBP: 00007faccfa11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007faccfbb6038 R14: 00007faccfbb5fa0 R15: 00007fff820c5b08
 </TASK>
