rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10337 ticks this GP) idle=46f4/1/0x4000000000000000 softirq=13018/13018 fqs=5240
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1267623          0            0
rcu: 	cputime:     8555      43933           35   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=9557 q=7583 ncpus=2)
CPU: 0 UID: 0 PID: 5899 Comm: syz.1.47 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+0x48e/0x2550
Code: d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 b4 19 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 bf 19 00 00 0f b6 43 01 <83> e0 07 0f 84 7c 16 00 00 83 f8 01 4c 8b 6c 24 50 49 bc 00 00 00
RSP: 0018:ffffc90000006f40 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff90c80282 RCX: ffffffff904b12e4
RDX: ffffffff90c8027e RSI: ffffffff90c8027e RDI: ffffffff8c289740
RBP: ffffffff81b172c1 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e95c700 R12: dffffc0000000000
R13: ffffffff90c80283 R14: ffffc90000006fe8 R15: ffffffff904b12e4
FS:  00007fad500b76c0(0000) GS:ffff88818dcb8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558a0524e8 CR3: 00000001bc208000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x182/0x650
 nsim_start_xmit+0x31c/0xd60
 dev_hard_start_xmit+0x2cd/0x830
 sch_direct_xmit+0x257/0x4c0
 __dev_queue_xmit+0x1754/0x37f0
 ip6_output+0x337/0x540
 ndisc_send_skb+0xcb2/0x1650
 addrconf_rs_timer+0x2d2/0x6c0
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_common+0x89/0xd0
Code: 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 eb 20 8d f6 49 89 1e bf 01 00 00 00 e8 3e a3 ff ff 65 8b 05 27 25 93 07 <65> ff 0d 20 25 93 07 65 48 8b 1d f0 24 93 07 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90007347a28 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff81336b46 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8c289780 RDI: ffffffff8c289740
RBP: ffffc90007347a90 R08: ffffffff902f72f7 R09: 1ffffffff205ee5e
R10: dffffc0000000000 R11: fffffbfff205ee5f R12: 1ffff92000e68f5c
R13: 1ffff92000e68f5c R14: ffff8881b8b9b330 R15: dffffc0000000000
 preempt_schedule_thunk+0x16/0x30
 smp_call_function_single+0x46e/0x5a0
 perf_install_in_context+0x5bd/0x900
 __se_sys_perf_event_open+0x1906/0x1d40
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad4f19ce59
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:00007fad500b7028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fad4f415fa0 RCX: 00007fad4f19ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007fad4f232e6f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad4f416038 R14: 00007fad4f415fa0 R15: 00007ffec6c7c378
 </TASK>
sched: DL replenish lagged too much
