rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=d29c/1/0x4000000000000000 softirq=83824/83829 fqs=3535
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1124073          0            0
rcu: 	cputime:    30192      22287           83   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=74377 q=9973 ncpus=2)
CPU: 1 UID: 0 PID: 20619 Comm: syz.0.4337 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:kasan_save_alloc_info+0x0/0x50
Code: 89 c3 e8 43 ce ff ff 89 43 08 5b 41 5e e9 08 bd 81 09 cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 41 56 53 49 89 f6 48 63 87 b4 00 00 00 48 85 c0 0f 94
RSP: 0018:ffffc90000a08600 EFLAGS: 00000202
RAX: ffffed10319bd5c4 RBX: ffff88818cdeae00 RCX: 00000000000000fc
RDX: 0000000000002920 RSI: ffff88818cdeae00 RDI: ffff888100041780
RBP: 0000000000002920 R08: dffffc0000000000 R09: 0000000000000004
R10: ffffed10319bd5c4 R11: ffffed1022abe0c4 R12: 0000000000000020
R13: ffff88818cdeae00 R14: ffff888100041780 R15: 0000000000000020
FS:  00007fb2423396c0(0000) GS:ffff8882a945a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556e5c14e8 CR3: 00000001aab2e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x31c/0x660
 ref_tracker_alloc+0x15a/0x4c0
 ___neigh_create+0xc9a/0x2280
 ip6_finish_output2+0x729/0x13e0
 ip6_output+0x340/0x550
 ndisc_send_skb+0xd0b/0x1670
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:finish_task_switch+0x245/0x920
Code: 00 00 48 85 db 0f 85 e8 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 49 83 c4 48 4c 89 e7 e8 d5 65 1c 0a e8 30 81 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 80 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90008a9f938 EFLAGS: 00000202
RAX: 0000000000064ba7 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8def9047 RDI: ffffffff8c27ca00
RBP: ffffc90008a9f990 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff8881724d3a80
R13: dffffc0000000000 R14: ffff88816a500000 R15: ffff88823c63b998
 __schedule+0x15e5/0x52d0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_user_addr_fault+0x1ad/0x1340
Code: 1b 48 89 de 48 81 e6 00 02 00 00 31 ff e8 3b 18 4e 00 48 81 e3 00 02 00 00 0f 84 4a 0e 00 00 e8 e9 fb 55 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 39 13 4e 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc90008a9fcc8 EFLAGS: 00000206
RAX: 0000000000000177 RBX: 0000000000000200 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8def9047 RDI: ffffffff8c27ca00
RBP: dffffc0000000000 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffffc90008a9fda8
R13: 0000000000000000 R14: 0000000000000002 R15: ffff8881724d3a80
 exc_page_fault+0x6a/0xc0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:__put_user_4+0xd/0x20
Code: 66 89 01 31 c9 0f 1f 00 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 1f 00 <89> 01 31 c9 0f 1f 00 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90008a9fe50 EFLAGS: 00010246
RAX: 0000000000000006 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8e169ed2 RDI: ffffffff8c27ca00
RBP: 0000000000000006 R08: ffffffff821677ef R09: ffff8881bba80f80
R10: dffffc0000000000 R11: ffffed102dd95b99 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000005
 __sys_socketpair+0xb7/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb24139c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb242339028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fb241615fa0 RCX: 00007fb24139c819
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: 00007fb241432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb241616038 R14: 00007fb241615fa0 R15: 00007fffaf1cd1d8
 </TASK>
sched: DL replenish lagged too much
