rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=a094/1/0x4000000000000000 softirq=98558/98558 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   988523          0            0
rcu: 	cputime:    34174      18315           91   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=72065 q=2163 ncpus=2)
CPU: 0 UID: 0 PID: 21188 Comm: syz.0.5827 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:__kernel_text_address+0x0/0x40
Code: c1 03 38 c1 7c c1 48 c7 c7 80 ac 7c 8f e8 38 be 99 00 eb b3 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 53 48 89 fb e8 43 00 00 00 85 c0 0f 95 c0 48 81 fb 00
RSP: 0018:ffffc900000074e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000007550 RCX: 5318edbdccfc3800
RDX: 0000000000000004 RSI: ffffffff8d8f5dca RDI: ffffffff891dba23
RBP: ffffc90000007590 R08: ffffc90003a77d18 R09: 0000000000000000
R10: ffffc90000007558 R11: fffff52000000ead R12: ffff888197253a00
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000000eaa
FS:  00007fed46aaa6c0(0000) GS:ffff88818eb38000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005000 CR3: 0000000027d0c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 __kfence_alloc+0x2b2/0x3b0
 kmem_cache_alloc_node_noprof+0xed/0x710
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 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:unwind_next_frame+0x130e/0x2390
Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49
RSP: 0018:ffffc90003a76e38 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffffffff8f995af4 RCX: dffffc0000000000
RDX: ffffffff8f995ad4 RSI: ffffffff901843a2 RDI: ffffffff8bbf0e00
RBP: ffffffff8f995ad4 R08: 0000000000000009 R09: ffffffff81738c45
R10: ffffc90003a76f58 R11: ffffffff81ac31b0 R12: ffffffff822613bc
R13: ffffffff8f995ad4 R14: ffffc90003a76f08 R15: ffffffff8f995ae4
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0x157/0x9c0
 __schedule+0x17a0/0x4cc0
 preempt_schedule_notrace+0xd1/0x110
 preempt_schedule_notrace_thunk+0x16/0x30
 rcu_is_watching+0x7f/0xb0
 lock_release+0x4b/0x3e0
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x3d5/0x6f0
 kmem_cache_free+0x16f/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: 0033:0x7fed45b8f749
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:00007fed46aaa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007fed45de5fa0 RCX: 00007fed45b8f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fed45c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fed45de6038 R14: 00007fed45de5fa0 R15: 00007ffcb7aeb708
 </TASK>
sched: DL replenish lagged too much
