clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104502173777 wd_nsec: 104502176823
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=ad2c/1/0x4000000000000000 softirq=27763/27764 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   906280          1            0
rcu: 	cputime:    35361      17128          105   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=22537 q=1083 ncpus=2)
CPU: 1 UID: 0 PID: 9510 Comm: syz.1.1075 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:__sanitizer_cov_trace_pc+0x0/0x70
Code: 89 fb e8 23 00 00 00 48 8b 3d a4 48 fe 0b 48 89 de 5b e9 33 0c 59 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 70 a0 92 65 8b 15 c8 c3
RSP: 0018:ffffc900001e0670 EFLAGS: 00000287
RAX: ffff888028af0000 RBX: ffff888027422800 RCX: 0000000000000016
RDX: ffff8881063bb980 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8f6480db R09: 1ffffffff1ec901b
R10: dffffc0000000000 R11: ffffffff8a33f2e0 R12: 1ffff110210c9d60
R13: ffffffff8f647dc0 R14: ffff888027422b20 R15: 0000000000001af0
FS:  00007fb59b07b6c0(0000) GS:ffff8881a3c19000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002712e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ___neigh_create+0x16eb/0x2260
 ip6_finish_output2+0xb4d/0x16a0
 ndisc_send_skb+0xb54/0x1440
 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 28 15 f6 e8 36 83 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:ffffc9000474f4c0 EFLAGS: 00000282
RAX: 0df2f3493dbfb300 RBX: 0000000000000000 RCX: 0df2f3493dbfb300
RDX: 0000000000000000 RSI: ffffffff8d9b7306 RDI: 0000000000000001
RBP: ffffc9000474f570 R08: ffffffff8fa38937 R09: 1ffffffff1f47126
R10: dffffc0000000000 R11: fffffbfff1f47127 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008e9e98
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:should_fail_ex+0x14d/0x560
Code: eb 4b 65 4c 8b 3c 25 08 70 a0 92 49 81 c7 e4 15 00 00 4d 89 fd 49 c1 ed 03 43 0f b6 44 25 00 84 c0 0f 85 f4 02 00 00 41 8b 2f <85> ed 0f 84 e2 fe ff ff ff cd 43 0f b6 44 25 00 84 c0 0f 85 15 03
RSP: 0018:ffffc9000474f638 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8e259fa0 RCX: 0df2f3493dbfb300
RDX: 0000000000000001 RSI: 00000000000002c0 RDI: ffffffff8e259fa0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8216350d
R10: ffff88801fe50000 R11: fffffbfff1f47127 R12: dffffc0000000000
R13: 1ffff11020c779ec R14: 00000000000002c0 R15: ffff8881063bcf64
 should_failslab+0xa8/0x100
 kmem_cache_alloc_node_noprof+0x76/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 pfkey_sendmsg+0xca5/0x1090
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb59a18eba9
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:00007fb59b07b038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb59a3d5fa0 RCX: 00007fb59a18eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007fb59a211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb59a3d6038 R14: 00007fb59a3d5fa0 R15: 00007fff00153c48
 </TASK>
