rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=70d4/1/0x4000000000000000 softirq=26320/26320 fqs=5238
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1063929          0            0
rcu: 	cputime:    35432      17057           85   ==> 52490(ms)
rcu: 	(t=10502 jiffies g=23521 q=2056 ncpus=2)
CPU: 0 UID: 0 PID: 9897 Comm: syz.2.1255 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:lock_is_held_type+0x106/0x150
Code: 18 00 00 b8 ff ff ff ff 65 0f c1 05 04 d0 6d 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 e9 cb e2 02 00 cc 90 0f 0b 90 48 c7
RSP: 0018:ffffc900000078c8 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000101
RDX: 0000000000000100 RSI: ffffffff8e169ed2 RDI: ffffffff8c27ca00
RBP: 00000000ffffffff R08: ffffffff8a55da0d R09: ffffffff8e75e5e0
R10: 0000000000000003 R11: 0000000000000100 R12: 0000000000000246
R13: ffff88810adb57c0 R14: ffffffff8fbceb48 R15: 0000000000000005
FS:  00007fd74db8c6c0(0000) GS:ffff88818de5a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557e7a84e8 CR3: 00000001a2ed2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lockdep_rtnl_is_held+0x1b/0x40
 ip6_mtu+0x1a2/0x490
 ip6_finish_output+0x136/0x480
 ip6_output+0x340/0x550
 ndisc_send_skb+0xd0b/0x1670
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __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+0x245/0x920
Code: 00 00 48 85 db 0f 85 e8 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 49 83 c4 48 4c 89 e7 e8 d5 65 1c 0a e8 30 81 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 80 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000916f7f8 EFLAGS: 00000206
RAX: 0000000000017faf RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8def9047 RDI: ffffffff8c27ca00
RBP: ffffc9000916f850 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff88810adb57c0
R13: dffffc0000000000 R14: ffff888102eb3a80 R15: ffff88812103b998
 __schedule+0x15e5/0x52d0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70
Code: 89 fb e8 23 00 00 00 48 8b 3d a4 7d 55 0c 48 89 de 5b e9 a3 ae 5e 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0d c8 bd 56 11 65 8b 15 e9 bd 56
RSP: 0018:ffffc9000916fb88 EFLAGS: 00000287
RAX: 00000000000000af RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88810adb57c0 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffff88810bc50a90 R08: ffff88810bc50ac7 R09: 1ffff1102178a158
R10: dffffc0000000000 R11: ffffed102178a159 R12: ffff88810bc50ab0
R13: 00000000000000af R14: 00000000000000ae R15: 0000000000000001
 tomoyo_check_acl+0x30d/0x400
 tomoyo_path_number_perm+0x339/0x630
 security_file_ioctl+0xc3/0x2a0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd74cd9c819
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:00007fd74db8c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd74d016090 RCX: 00007fd74cd9c819
RDX: 0000000000000005 RSI: 0000000040042408 RDI: 0000000000000006
RBP: 00007fd74ce32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd74d016128 R14: 00007fd74d016090 R15: 00007ffec0cf3fd8
 </TASK>
sched: DL replenish lagged too much
