rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=b8f4/1/0x4000000000000000 softirq=19924/19925 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1248220          0            0
rcu: 	cputime:    31978      20520           81   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=14669 q=2035 ncpus=2)
CPU: 1 UID: 0 PID: 7154 Comm: syz.2.335 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+0x17cc/0x2390
Code: c1 e8 03 0f b6 04 28 84 c0 0f 85 0e 0b 00 00 49 0f bf 04 24 48 01 c6 4c 89 f7 48 89 da e8 4c 0e 00 00 84 c0 0f 84 47 01 00 00 <48> bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 0f b6 04 28 84 c0 0f
RSP: 0018:ffffc900001e0038 EFLAGS: 00000246
RAX: 1ffff9200003c029 RBX: 00007f12c6a11e19 RCX: dffffc0000000000
RDX: ffffffff902a9e8a RSI: 0000000000000000 RDI: ffffc9000861ff78
RBP: dffffc0000000000 R08: 0000000000000022 R09: ffffffff8172d195
R10: ffffc900001e0158 R11: ffffffff81ac4b00 R12: ffffc9000861ff58
R13: ffffc900001e0158 R14: ffffc900001e0108 R15: ffffc900001e0148
FS:  00007f12c775f6c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f12c775efc8 CR3: 0000000110aea000 CR4: 00000000000006f0
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
 ref_tracker_alloc+0x133/0x460
 ___neigh_create+0xc9e/0x2260
 ip6_finish_output2+0x1175/0x1480
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbce/0x1510
 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 ab d8 13 f6 e8 16 35 4b 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:ffffc9000861f9e0 EFLAGS: 00000282
RAX: fbd180ca0a5a3f00 RBX: 0000000000000000 RCX: fbd180ca0a5a3f00
RDX: 0000000000000007 RSI: ffffffff8d9b9fdf RDI: 0000000000000001
RBP: ffffc9000861fa80 R08: ffffffff8fa38f37 R09: 1ffffffff1f471e6
R10: dffffc0000000000 R11: fffffbfff1f471e7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920010c3f3c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:___cache_free+0x8d/0xf0
Code: 10 75 27 48 8b 04 01 41 8b 4f 28 48 89 04 19 48 8d 4a 08 49 8b 37 65 48 0f c7 0e 75 cf 5b 41 5c 41 5e 41 5f e9 04 8a 65 09 cc <4c> 89 ff 4c 89 c6 48 89 da 48 89 d9 41 b8 01 00 00 00 4d 89 f1 5b
RSP: 0018:ffffc9000861fb40 EFLAGS: 00000202
RAX: ffff8881a3c13000 RBX: ffff88810eff1a00 RCX: ffffffff92a2c530
RDX: 0000000000041be9 RSI: 000000000000059b RDI: 000000000000059c
RBP: ffff88810eff0000 R08: ffffea00043bfc00 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f471e7 R12: ffffea00043bfc00
R13: 0000000000000000 R14: ffffffff8223470c R15: ffff88801a44bc80
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_node_noprof+0x21b/0x4e0
 allocate_slab+0x16a/0x370
 ___slab_alloc+0xbeb/0x1420
 kmem_cache_alloc_lru_noprof+0x288/0x3d0
 sock_alloc_inode+0x28/0xc0
 alloc_inode+0x6a/0x1b0
 __sock_create+0x12d/0x9f0
 __sys_socketpair+0x23a/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12c698eba9
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:00007f12c775f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f12c6bd5fa0 RCX: 00007f12c698eba9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f12c6a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12c6bd6038 R14: 00007f12c6bd5fa0 R15: 00007ffca4523f08
 </TASK>
sched: DL replenish lagged too much
