rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (8738 ticks this GP) idle=6004/1/0x4000000000000000 softirq=17523/17523 fqs=4655
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   807723          0            0
rcu: 	cputime:    37662      14807          126   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=10241 q=17607 ncpus=2)
CPU: 1 UID: 0 PID: 6651 Comm: syz.2.220 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:__sanitizer_cov_trace_switch+0x74/0x130
Code: 00 b9 07 00 00 00 48 85 c0 75 13 e9 c2 00 00 00 b9 01 00 00 00 48 85 c0 0f 84 b4 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 <65> 4c 8b 04 25 08 40 a0 92 45 31 c9 eb 08 49 ff c1 4c 39 c8 74 77
RSP: 0000:ffffc900001e01d8 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 0000000000000005
RDX: ffffffff8acc7be2 RSI: ffffffff8f76fc80 RDI: 0000000000000000
RBP: ffffc900001e03f0 R08: 0000000000000000 R09: 1ffff9200003c068
R10: dffffc0000000000 R11: fffff5200003c069 R12: 1ffff1100784a667
R13: ffffc900001e06e8 R14: dffffc0000000000 R15: 1ffff9200003c0dd
FS:  00007fcf2dbf66c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003fcee000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 cfg80211_inform_single_bss_data+0x712/0x1ac0
 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: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 fb 88 15 f6 e8 36 e3 4c 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: 0000:ffffc90002acfdc0 EFLAGS: 00000282
RAX: 40180c2bb7d47200 RBX: 0000000000000000 RCX: 40180c2bb7d47200
RDX: 0000000000000000 RSI: ffffffff8d9b6a7d RDI: 0000000000000001
RBP: ffffc90002acfe70 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000559fb8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 ab 42 b7 f5 cc
RSP: 0000:ffffc90002acff30 EFLAGS: 00000286
RAX: 40180c2bb7d47200 RBX: ffffc90002acff58 RCX: 40180c2bb7d47200
RDX: 0000000000000000 RSI: ffffffff8d9b6a7d RDI: ffffffff8be33300
RBP: 0000000000000000 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802016b980 R15: 0000000000000008
 irqentry_exit_to_user_mode+0x51/0x120
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7fcf2f93fffd
Code: 8d 46 ff 48 89 fb 48 8d ac 24 00 01 00 00 48 89 44 24 08 4c 8d 7c 24 10 45 31 c0 31 c9 ba ff ff ff ff be 00 80 00 00 4c 89 ff <e8> 7e 3a 00 00 48 8b 54 24 08 48 89 d9 48 89 de 48 8d 05 4c 90 25
RSP: 002b:00007fcf2dbf5d20 EFLAGS: 00000246
RAX: 000000000000007f RBX: 00007fcf2dbf5fa0 RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 0000000000008000 RDI: 00007fcf2dbf5d30
RBP: 00007fcf2dbf5e20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00007fcf2fa11b31
R13: 00007fcf2dbf5eb0 R14: 0000000000000000 R15: 00007fcf2dbf5d30
 </TASK>
sched: DL replenish lagged too much
