rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=427c/1/0x4000000000000000 softirq=226227/226242 fqs=5198
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1048019          0            0
rcu: 	cputime:    36435      16054           50   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=202701 q=2535 ncpus=2)
CPU: 0 UID: 0 PID: 19974 Comm: syz.4.14760 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+0x51a/0x23c0
Code: 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 8d 47 fc 48 0f 47 d8
RSP: 0018:ffffc90000006bd8 EFLAGS: 00000246
RAX: fffffffffb224172 RBX: ffffffff90568a30 RCX: dffffc0000000000
RDX: ffffffff905689f0 RSI: ffffffff910aa3ee RDI: ffffffff8be73ea0
RBP: ffffffff905689f0 R08: 0000000000000011 R09: ffffffff8e35a3a0
R10: ffffc90000006cf8 R11: ffffffff81ae5bd0 R12: ffffffff8b78cbb6
R13: ffffffff905689f0 R14: ffffc90000006ca8 R15: ffffffff90568a10
FS:  00007fb62e4ef6c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb62e48bff8 CR3: 000000010e0d0000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0xee/0x890
 skb_release_head_state+0x71/0x360
 sk_skb_reason_drop+0xe9/0x170
 ip_tunnel_xmit+0x177c/0x2430
 __gre_xmit+0x19e/0x240
 erspan_xmit+0xa87/0x1440
 dev_hard_start_xmit+0x2cd/0x7f0
 sch_direct_xmit+0x251/0x4c0
 __dev_queue_xmit+0x13b4/0x32a0
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbaa/0x14e0
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x5a0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x7c0
 __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+0x241/0x920
Code: 0f 84 bd 01 00 00 48 85 db 0f 85 e4 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 29 72 e8 09 e8 64 84 37 00 fb 4c 8b 65 c0 <49> 8d bc 24 48 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900084ff698 EFLAGS: 00000202
RAX: 000000000000025d RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dad379b RDI: ffffffff8be73f00
RBP: ffffc900084ff6f0 R08: ffffffff8fced577 R09: 1ffffffff1f9daae
R10: dffffc0000000000 R11: fffffbfff1f9daaf R12: ffff8881bd4d9d40
R13: dffffc0000000000 R14: ffff88816c5bd7c0 R15: ffff88812103b498
 __schedule+0x14f7/0x4fb0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_is_held_type+0x106/0x150
Code: 18 00 00 b8 ff ff ff ff 65 0f c1 05 74 03 57 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 48 c7
RSP: 0018:ffffc900084ffa20 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8dd3c55e RDI: ffffffff8be73f00
RBP: 00000000ffffffff R08: ffffc900084ffa27 R09: 1ffff9200109ff44
R10: dffffc0000000000 R11: fffff5200109ff45 R12: 0000000000000246
R13: ffff8881bd4d9d40 R14: ffffffff8e35a460 R15: 0000000000000000
 __might_resched+0x86/0x4d0
 exit_signals+0x2b/0x7a0
 do_exit+0x330/0x2310
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb62d59acb9
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:00007fb62e4ef028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000006 RBX: 00007fb62d815fa0 RCX: 00007fb62d59acb9
RDX: ffffff7fffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007fb62d608bf7 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb62d816038 R14: 00007fb62d815fa0 R15: 00007ffdc7463b78
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105300550391 wd_nsec: 105300552705
