rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10501 ticks this GP) idle=cc44/1/0x4000000000000000 softirq=54733/54733 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1034268          0            0
rcu: 	cputime:    33961      18538           92   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=46121 q=1639 ncpus=2)
CPU: 1 UID: 0 PID: 14187 Comm: syz.4.2392 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-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:should_failslab+0x0/0x100
Code: ff 4c 89 ff e8 c1 76 ff ff e9 f6 fc ff ff cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 41 57 41 56 41 54 53 89 f3 49 89 fe 49 bc 00 00 00 00
RSP: 0018:ffffc900001e07d8 EFLAGS: 00000246
RAX: 0000000000400140 RBX: 0000000000000820 RCX: dffffc0000000000
RDX: 0000000000000048 RSI: 0000000000000820 RDI: ffff88801a441280
RBP: 0000000000000820 R08: 00000000000002ff R09: 0200000000000000
R10: 00000000000002ff R11: ffffffff89649720 R12: ffff88810e5dc780
R13: ffffc900001e09d0 R14: ffffffff8c943d41 R15: ffff88801a441280
FS:  00007f7c503bf6c0(0000) GS:ffff8881a3c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000127578000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __kmalloc_cache_noprof+0x70/0x3d0
 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:do_vfs_ioctl+0x8f0/0x1430
Code: e8 45 9f 86 ff 45 31 ff 8b 7c 24 18 31 f6 e8 27 58 03 00 eb 15 e8 30 9f 86 ff 4c 89 f7 48 8b 74 24 10 e8 53 59 0c 00 41 89 c7 <49> bc 00 00 00 00 00 fc ff df 48 c7 44 24 20 0e 36 e0 45 43 c7 44
RSP: 0018:ffffc90004c7fc20 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000008e53b02 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc90004c7fea8 R08: ffff88801dc4732f R09: 1ffff11003b88e65
R10: dffffc0000000000 R11: ffffed1003b88e66 R12: ffffffff8b93f548
R13: 1ffff9200098ff88 R14: ffff88802899dc00 R15: 0000000000000000
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c4f58ebe9
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:00007f7c503bf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7c4f7b5fa0 RCX: 00007f7c4f58ebe9
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f7c4f611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7c4f7b6038 R14: 00007f7c4f7b5fa0 R15: 00007ffeda931f08
 </TASK>
