rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (8384 ticks this GP) idle=e424/1/0x4000000000000000 softirq=13088/13089 fqs=4824
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   972049          6            0
rcu: 	cputime:    37476      14993           48   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=7157 q=3262 ncpus=2)
CPU: 0 UID: 0 PID: 6001 Comm: syz.0.46 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:ieee80211_bss_info_update+0x3d9/0xa40
Code: e8 dc c5 b7 f6 48 8b 44 24 10 4c 8d b0 80 1c 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 6a 85 42 f7 4d 8b 36 <e8> f2 1f 91 00 41 89 c7 31 ff 89 c6 e8 86 e7 da f6 45 85 ff 74 21
RSP: 0018:ffffc900000079a0 EFLAGS: 00000246
RAX: 1ffff1102d39b560 RBX: ffffffff8ae7b3d6 RCX: ffff8881151257c0
RDX: 0000000000000100 RSI: ffffffff8be74060 RDI: ffffffff8be74020
RBP: ffffc90000007ae0 R08: ffffffff8ae7b3d6 R09: ffffffff8e35a3a0
R10: dffffc0000000000 R11: ffffed102d39b1dd R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000010
FS:  00007f420149d6c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcf677e8400 CR3: 000000016f74c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x2508/0x3050
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 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:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 e2 17 f6 e8 9e 6a 50 f6 fb bf 01 00 00 00 <e8> e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 6c 50 f6 bf 01
RSP: 0018:ffffc90005fdf7d0 EFLAGS: 00000202
RAX: 000000000001113b RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000007 RSI: ffffffff8dad37f0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:format_decode+0x8d/0xe10
Code: 48 c1 e8 03 0f b6 04 08 84 c0 75 28 42 0f b6 5c 35 00 48 89 df 48 c7 c6 70 10 b6 8f e8 ac df 4d f6 85 db 74 2a 83 fb 25 74 1e <e8> 1e da 4d f6 49 ff c6 eb bb 44 89 e1 80 e1 07 38 c1 7c ce 4c 89
RSP: 0018:ffffc90005fdf8f0 EFLAGS: 00000293
RAX: 0000000000000002 RBX: 0000000000000020 RCX: 0000000000000001
RDX: ffffffff8b74bdc4 RSI: ffffffff8fb61070 RDI: 0000000000000020
RBP: ffffffff8bdf562a R08: ffff8881151257c0 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff8bdf562a
R13: ffffc90005fdf998 R14: 0000000000000000 R15: ffffffff8bdf562a
 vsnprintf+0x102/0xee0
 tomoyo_supervisor+0x155/0x1570
 tomoyo_path_number_perm+0x4aa/0x630
 security_file_ioctl+0xc3/0x2a0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f420059acb9
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:00007f420149d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4200815fa0 RCX: 00007f420059acb9
RDX: 0000000000000003 RSI: 0000000040042408 RDI: 0000000000000004
RBP: 00007f4200608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4200816038 R14: 00007f4200815fa0 R15: 00007ffc2b2179d8
 </TASK>
sched: DL replenish lagged too much
