rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10445 ticks this GP) idle=df9c/1/0x4000000000000000 softirq=30147/30147 fqs=5230
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1031823          0            0
rcu: 	cputime:    27500      24989           48   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=24045 q=2447 ncpus=2)
CPU: 0 UID: 0 PID: 8811 Comm: syz.1.879 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+0xa5/0x2390
Code: de 1b 00 00 41 8b 06 85 c0 0f 84 32 02 00 00 89 84 24 84 00 00 00 4c 89 bc 24 90 00 00 00 e8 f2 59 34 00 4c 8d 3d 00 00 00 00 <48> c7 c7 20 a1 13 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9
RSP: 0018:ffffc90000006b18 EFLAGS: 00000287
RAX: 0000000000000003 RBX: ffffffff8b7a4f06 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff8b7a4f06 RDI: ffffc90000006be8
RBP: dffffc0000000000 R08: ffffc90000006cb0 R09: 0000000000000012
R10: ffffc90000006c38 R11: ffffffff81ac4d00 R12: 1ffff92000000d7d
R13: ffffc90000006c20 R14: ffffc90000006be8 R15: ffffffff8172d195
FS:  00007fc1903f66c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000108f84000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082
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_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 ip_tunnel_xmit+0xe76/0x2390
 gre_tap_xmit+0x590/0x7a0
 dev_hard_start_xmit+0x2d7/0x830
 sch_direct_xmit+0x241/0x4b0
 __dev_queue_xmit+0x1857/0x3b50
 ip6_finish_output2+0x11bc/0x16a0
 ndisc_send_skb+0xb54/0x1440
 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 8a 14 f6 e8 16 e7 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:ffffc90007677ba0 EFLAGS: 00000286
RAX: 38fd4e77cfc7fd00 RBX: 0000000000000000 RCX: 38fd4e77cfc7fd00
RDX: 0000000000000007 RSI: ffffffff8d9ba160 RDI: 0000000000000001
RBP: ffffc90007677c40 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000ecef74
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__se_sys_perf_event_open+0x1050/0x1d70
Code: 3b e8 64 2f ad ff 48 8b 5c 24 18 4c 89 ef e8 07 6e fe ff 41 89 dd 4c 89 f7 e8 5c 5c 01 00 8b 7c 24 54 e8 53 af 4c 00 49 63 dd <4c> 8b 74 24 68 44 89 f6 83 e6 01 31 ff e8 9e f7 cf ff 41 f6 c6 01
RSP: 0018:ffffc90007677d00 EFLAGS: 00000282
RAX: ffffffff823c838d RBX: 0000000000000088 RCX: ffff88802115d640
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90007677ee0 R08: 0000000000000000 R09: ffffffff823c8117
R10: dffffc0000000000 R11: fffff52000ecef91 R12: ffff88803925ed50
R13: ffff88803925f390 R14: ffff88802115eb10 R15: 1ffff92000ecefb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc19218eba9
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:00007fc1903f6038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc1923d6180 RCX: 00007fc19218eba9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007fc192211e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc1923d6218 R14: 00007fc1923d6180 R15: 00007ffda770afd8
 </TASK>
sched: DL replenish lagged too much
