rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (9748 ticks this GP) idle=7a0c/1/0x4000000000000000 softirq=16482/16483 fqs=4841
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1307196          6            0
rcu: 	cputime:    10232      42255           36   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=14405 q=4131 ncpus=2)
CPU: 0 UID: 0 PID: 6642 Comm: syz.0.248 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_acquire+0x221/0x350
Code: ff ff ff e8 d1 36 08 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 bb 01 98 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 48 61 92
RSP: 0018:ffffc90000006bd8 EFLAGS: 00000286
RAX: bb33b7fa05d56f00 RBX: 0000000000000000 RCX: 0000000000000302
RDX: 0000000026c5c1b0 RSI: ffffffff8e21f066 RDI: ffffffff8c28bae0
RBP: ffffffff8176f256 R08: ffffffff8176f256 R09: ffffffff8e95cd60
R10: ffffc90000006d48 R11: fffff52000000db5 R12: 0000000000000002
R13: ffffffff8e95cd60 R14: 0000000000000000 R15: 0000000000000246
FS:  00007fe7816ec6c0(0000) GS:ffff88818dc84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000280 CR3: 000000016aa7c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc3/0x2550
 __unwind_start+0x5b8/0x760
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x640
 ieee80211_inform_bss+0xc75/0x1160
 cfg80211_inform_single_bss_data+0xcf9/0x1af0
 cfg80211_inform_bss_data+0x266/0x3c40
 cfg80211_inform_bss_frame_data+0x3c7/0x730
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29f8/0x3740
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/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_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 b3 b7 e8 f5 e8 0e ce 22 f6 fb bf 01 00 00 00 <e8> 53 a2 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 d4 cf 22 f6 bf 01
RSP: 0018:ffffc90005a97bd0 EFLAGS: 00000202
RAX: 0000000000001d83 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000006 RSI: ffffffff8dfabd2a RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9030c1f7 R09: 1ffffffff206183e
R10: dffffc0000000000 R11: fffffbfff206183f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x14f/0x760
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:mutex_unlock+0x0/0x10
Code: 24 18 e8 93 c8 86 f6 e9 d9 fe ff ff 31 ff e8 47 7f e8 f5 e9 e8 fd ff ff cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 34 24 eb 16 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc90005a97cf8 EFLAGS: 00000286
RAX: 0000000080000000 RBX: ffff888111511d80 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8dfabd2a RDI: ffff88811e9b0840
RBP: ffffc90005a97ee0 R08: ffffffff9030c1f7 R09: 1ffffffff206183e
R10: dffffc0000000000 R11: fffffbfff206183f R12: 1ffff92000b52fb0
R13: ffff8881139a98e0 R14: ffff8881139a9b28 R15: ffff88811e9b0800
 __se_sys_perf_event_open+0x1914/0x1d40
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe78079cdd9
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:00007fe7816ec028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fe780a16090 RCX: 00007fe78079cdd9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fe780832d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe780a16128 R14: 00007fe780a16090 R15: 00007ffc10c12848
 </TASK>
clocksource: Marking clocksource tsc unstable due to frequency skew
clocksource: Watchdog               kvm-clock interval:            47098ns
clocksource: Clocksource                  tsc interval:            46573ns
tsc: Marking TSC unstable due to clocksource watchdog
