clocksource: Long readout interval, skipping watchdog check: cs_nsec: 62381976615 wd_nsec: 62381978055
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=967c/1/0x4000000000000000 softirq=30982/30983 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1051968          1            0
rcu: 	cputime:    33497      18992           98   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=23041 q=1970 ncpus=2)
CPU: 1 UID: 0 PID: 10087 Comm: syz.0.1631 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+0x7c2/0x2390
Code: e8 b3 ba b0 00 48 8b 3b 48 85 ff 0f 84 d3 0d 00 00 48 83 c7 38 e8 0e 28 00 00 49 89 c4 48 8b 34 24 e9 a9 02 00 00 49 8d 5e 40 <48> 89 d8 48 c1 e8 03 80 3c 28 00 74 11 48 89 df e8 79 ba b0 00 48
RSP: 0018:ffffc900001e0378 EFLAGS: 00000246
RAX: ffffc900001e047d RBX: ffffc900001e0488 RCX: ffffffff90276e84
RDX: ffffffff90db7126 RSI: ffffffff90db712a RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8172c195
R10: ffffc900001e0498 R11: ffffffff81ac3880 R12: ffffffff90db712b
R13: ffffc900001e0498 R14: ffffc900001e0448 R15: ffffc900001e0480
FS:  00007f07ec7c86c0(0000) GS:ffff8881a3c1a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32663f CR3: 000000010d412000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 dst_cow_metrics_generic+0x56/0x1c0
 icmp6_dst_alloc+0x264/0x420
 ndisc_send_skb+0x41f/0x1440
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 fb e8 14 f6 e8 06 53 4c f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90007fe7420 EFLAGS: 00000282
RAX: 9a01ade6f9956d00 RBX: 0000000000000000 RCX: 9a01ade6f9956d00
RDX: 0000000000000007 RSI: ffffffff8d9b6cef RDI: 0000000000000001
RBP: ffffc90007fe74d0 R08: ffffffff8fa37f37 R09: 1ffffffff1f46fe6
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000ffce84
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0xda/0x360
Code: a0 92 83 b8 ec 0a 00 00 00 0f 85 d5 00 00 00 48 c7 44 24 30 00 00 00 00 9c 8f 44 24 30 4c 89 74 24 10 4d 89 fe 4c 8b 7c 24 30 <fa> 48 c7 c7 65 a8 9c 8d e8 e9 a6 dc 09 65 ff 05 92 44 03 11 45 31
RSP: 0018:ffffc90007fe7598 EFLAGS: 00000246
RAX: ffff888107149cc0 RBX: 0000000000000000 RCX: 9a01ade6f9956d00
RDX: 0000000000000000 RSI: ffffffff8172c1b2 RDI: 1ffffffff1c273cc
RBP: ffffffff8172c195 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90007fe77b8 R11: fffff52000ffcef9 R12: 0000000000000002
R13: ffffffff8e139e60 R14: 0000000000000000 R15: 0000000000000246
 unwind_next_frame+0xc2/0x2390
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 tomoyo_realpath_from_path+0xe3/0x5d0
 tomoyo_path_number_perm+0x1e8/0x5a0
 security_file_ioctl+0xcb/0x2d0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f07eb98ebe9
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:00007f07ec7c8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f07ebbb5fa0 RCX: 00007f07eb98ebe9
RDX: 00002000000013c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f07eba11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f07ebbb6038 R14: 00007f07ebbb5fa0 R15: 00007ffcbfb405a8
 </TASK>
sched: DL replenish lagged too much
