rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10377 ticks this GP) idle=94c4/1/0x4000000000000000 softirq=28611/28611 fqs=5029
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   791951          2            0
rcu: 	cputime:    37740      14739           87   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=22405 q=26113 ncpus=2)
CPU: 1 UID: 0 PID: 9596 Comm: syz.2.1074 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:_ieee802_11_parse_elems_full+0x2533/0x4550
Code: 24 18 48 89 07 48 8d 8c 24 60 03 00 00 44 89 f8 c1 e8 06 48 8d 3c c1 be 08 00 00 00 e8 86 5e 26 f7 4c 0f ab bc 24 60 03 00 00 <4c> 8b 7c 24 78 e9 ef 09 00 00 e8 8e e6 c2 f6 e9 ca fb ff ff 41 83
RSP: 0018:ffffc900001dfaa0 EFLAGS: 00000256
RAX: 0000000000000001 RBX: ffff88812e8013bd RCX: ffffffff8afcc5aa
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900001dfe18
RBP: ffffc900001dfe90 R08: ffffc900001dfe1f R09: 1ffff9200003bfc3
R10: dffffc0000000000 R11: fffff5200003bfc4 R12: ffff88812e8013c2
R13: 00000000000000f2 R14: dffffc0000000000 R15: 00000000000000dd
FS:  00007fb42f0936c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb42e211e19 CR3: 00000001253ca000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000090602
Call Trace:
 <IRQ>
 ieee802_11_parse_elems_full+0x125a/0x2ab0
 ieee80211_inform_bss+0x10c/0x10a0
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 cfg80211_inform_bss_data+0x1fb/0x3b30
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x746/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x201c/0x2a90
 ieee80211_rx_napi+0x1a8/0x3d0
 ieee80211_handle_queued_frames+0xe8/0x1f0
 tasklet_action_common+0x36c/0x580
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f c7 ea 09 e8 5a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90006487938 EFLAGS: 00000282
RAX: 65a25396e85fc800 RBX: 0000000000000000 RCX: 65a25396e85fc800
RDX: 0000000000000007 RSI: ffffffff8d9b6a7d RDI: ffffffff8be33300
RBP: ffffc90006487990 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff888043e1d640
R13: dffffc0000000000 R14: ffff88811b5c0000 R15: ffff88813663ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 fd_install+0x3dc/0x540
 __se_sys_perf_event_open+0x1acd/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb42e18eba9
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:00007fb42f093038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fb42e3d6090 RCX: 00007fb42e18eba9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000004c0
RBP: 00007fb42e211e19 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb42e3d6128 R14: 00007fb42e3d6090 R15: 00007ffd52a80cf8
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 102201832339 wd_nsec: 102201834673
