rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=599c/1/0x4000000000000000 softirq=26252/26252 fqs=4547
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1198944          0            0
rcu: 	cputime:    30679      21810           78   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=18853 q=2316 ncpus=2)
CPU: 1 UID: 0 PID: 8485 Comm: syz.1.925 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+0x171c/0x2390
Code: 1f 0c 01 0f 85 18 02 00 00 80 3d 7e 1e 01 11 00 0f 85 0b 02 00 00 c6 05 71 1e 01 11 01 4c 89 f7 e8 89 0c 00 00 e9 f7 01 00 00 <48> 8b 54 24 08 48 8d 5a 02 48 83 c2 03 48 89 d8 48 c1 e8 03 0f b6
RSP: 0018:ffffc90000a08358 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000a08460 RCX: 0000000000000000
RDX: ffffffff908e9ca6 RSI: 0000000000000001 RDI: ffffc90000a08488
RBP: dffffc0000000000 R08: ffffc90000a08487 R09: 0000000000000000
R10: ffffc90000a08478 R11: fffff52000141091 R12: ffffc90003607d70
R13: ffffc90000a08478 R14: ffffc90000a08428 R15: 1ffffffff211d394
FS:  00007f0992fb96c0(0000) GS:ffff8882a9f38000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001ac16e000 CR4: 00000000000006f0
DR0: 0000200000000300 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_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x367/0x6e0
 dst_alloc+0x105/0x170
 icmp6_dst_alloc+0x75/0x420
 ndisc_send_skb+0x3f1/0x1510
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 ef 79 b8 09 e8 5a b9 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 58 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900036073f8 EFLAGS: 00000282
RAX: ee314b8d47433800 RBX: 0000000000000000 RCX: ee314b8d47433800
RDX: 0000000000000006 RSI: ffffffff8d70f100 RDI: ffffffff8bbf0e60
RBP: ffffc90003607450 R08: ffffffff8f7cf077 R09: 1ffffffff1ef9e0e
R10: dffffc0000000000 R11: fffffbfff1ef9e0f R12: ffff88819d8dba00
R13: dffffc0000000000 R14: ffff88819d8dd700 R15: ffff88823c63ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:unwind_next_frame+0x19ae/0x2390
Code: c7 a0 70 68 8b be 80 03 00 00 48 c7 c2 40 71 68 8b e8 a6 da 29 00 48 c7 c7 e0 d6 f3 8d 4c 89 fe e8 87 c0 29 00 e8 62 67 33 00 <89> d8 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc
RSP: 0018:ffffc900036077f8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffffff90176a01 RCX: ee314b8d47433800
RDX: 0000000000000001 RSI: ffffffff8d8f5dfe RDI: ffff88819d8dba00
RBP: dffffc0000000000 R08: ffffc90003607ca0 R09: 0000000000000000
R10: ffffc90003607918 R11: fffff520006c0f25 R12: ffffc90003607cb0
R13: ffffc90003600000 R14: ffffc900036078c8 R15: ffffffff81738c45
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kmem_cache_free+0x4a2/0x690
 __sk_destruct+0x4d2/0x660
 inet_release+0x144/0x190
 sock_close+0xc3/0x240
 __fput+0x44c/0xa70
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f099218f749
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:00007f0992fb9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f09923e5fa0 RCX: 00007f099218f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f0992213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f09923e6038 R14: 00007f09923e5fa0 R15: 00007ffd4441c328
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104766868482 wd_nsec: 104766870725
