rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=610c/1/0x4000000000000000 softirq=20276/20277 fqs=4330
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1169881          0            0
rcu: 	cputime:    36603      15845           43   ==> 52460(ms)
rcu: 	(t=10501 jiffies g=12141 q=25775 ncpus=2)
CPU: 1 UID: 0 PID: 6550 Comm: syz.4.141 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:unwind_next_frame+0xa0c/0x2390
Code: 00 00 48 89 df e8 d4 25 00 00 49 89 c4 48 8b 34 24 48 8d 5e 01 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 40 0f b6 04 28 84 c0 <0f> 85 df 15 00 00 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 48 8b 54
RSP: 0018:ffffc900001dfd38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff90db7297 RCX: 1ffff9200003bf01
RDX: ffffffff90db7292 RSI: ffffffff90db7296 RDI: ffffc900001e0ff8
RBP: dffffc0000000000 R08: 000000000000000f R09: ffffffff8172c195
R10: ffffc900001dfe58 R11: ffffffff81ac3930 R12: ffffc9000308ef50
R13: ffffc900001e1000 R14: ffffc900001dfe08 R15: ffffc900001d9000
FS:  00007f614a83a6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcbaa253b8 CR3: 0000000108cfc000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 cfg80211_inform_single_bss_data+0x905/0x1ac0
 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:raw_spin_rq_unlock_irq+0x15/0x90
Code: 21 08 e7 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 e8 c4 9e e9 09 e8 ef 26 35 00 fb 5b 41 5e <41> 5f c3 cc cc cc cc cc f3 0f 1e fa 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000308f010 EFLAGS: 00000286
RAX: 0f75b02abba5c800 RBX: ffff888136639f80 RCX: 0f75b02abba5c800
RDX: 0000000000000006 RSI: ffffffff8d9b6a67 RDI: ffffffff8be33300
RBP: ffffc9000308f230 R08: ffffffff8fa37f37 R09: 1ffffffff1f46fe6
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888109cb3980 R15: 1ffff11026cc7551
 __schedule+0x19e0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock_irqrestore+0xfd/0x110
 rcu_preempt_deferred_qs_irqrestore+0x89c/0xce0
 rcu_read_unlock_special+0x475/0x5e0
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 security_file_alloc+0x34/0x330
 init_file+0x93/0x2f0
 alloc_empty_file+0x6e/0x1d0
 alloc_file_pseudo+0x13d/0x210
 anon_inode_getfile+0xc5/0x1a0
 __se_sys_perf_event_open+0xf20/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f614998ebe9
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:00007f614a83a038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f6149bc6180 RCX: 00007f614998ebe9
RDX: 7fffffffffffffff RSI: 0000000000000000 RDI: 0000200000000440
RBP: 00007f6149a11e19 R08: 0000000000000003 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6149bc6218 R14: 00007f6149bc6180 R15: 00007fff1d5b3508
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 110091862670 wd_nsec: 110091857573
