rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10343 ticks this GP) idle=b794/1/0x4000000000000000 softirq=14484/14485 fqs=4951
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1138936          0            0
rcu: 	cputime:    34382      18117           42   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=5657 q=4404 ncpus=2)
CPU: 1 UID: 0 PID: 5961 Comm: syz.1.18 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+0x214/0x2390
Code: ef 08 8b 15 1e 2f 4b 0c 8d 42 ff 44 39 f8 0f 86 65 18 00 00 44 89 f8 4c 8d 2c 85 20 0d e0 90 4c 89 e8 48 c1 e8 03 0f b6 04 28 <84> c0 48 89 eb 0f 85 1c 1c 00 00 45 8b 6d 00 44 89 f8 ff c0 48 8d
RSP: 0018:ffffc900001df9d8 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: 0000000000000001 RCX: b15089c9ac4aee00
RDX: 00000000000a7d64 RSI: ffffffff8be33660 RDI: ffffffff8be33620
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900001dfaf8 R11: ffffffff81ac3810 R12: ffffffff81ac37bb
R13: ffffffff90e2bdfc R14: ffffc900001dfaa8 R15: 000000000000ac37
FS:  00007f2036b2d6c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2033ff6d58 CR3: 0000000115108000 CR4: 00000000000006f0
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
 ieee802_11_parse_elems_full+0x152/0x2ab0
 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:__schedule+0x4/0x4cc0
Code: f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 01
RSP: 0018:ffffc9000471fb38 EFLAGS: 00000286
RAX: b15089c9ac4aee00 RBX: 0000000000000000 RCX: b15089c9ac4aee00
RDX: 0000000000000000 RSI: ffffffff8be33660 RDI: 0000000000000001
RBP: ffffc9000471fbe0 R08: ffffffff8fa38437 R09: 1ffffffff1f47086
R10: dffffc0000000000 R11: fffffbfff1f47087 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008e3f68
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__get_user_4+0xa/0x20
Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 <48> 39 d0 48 0f 47 c2 0f 1f 00 8b 10 31 c0 0f 1f 00 e9 90 02 04 00
RSP: 0018:ffffc9000471fca0 EFLAGS: 00000282
RAX: 00002000000000c4 RBX: ffffc9000471fda0 RCX: b15089c9ac4aee00
RDX: 00007ffffffff000 RSI: ffffffff8be33660 RDI: ffffffff8be33620
RBP: ffffc9000471fee0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc9000471fda0 R11: fffff520008e3fc5 R12: ffffc9000471fda0
R13: 00002000000000c4 R14: 0000000000000000 R15: 00002000000000c0
 perf_copy_attr+0x45/0x880
 __se_sys_perf_event_open+0xdd/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2035d8ebe9
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:00007f2036b2d038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2035fb6090 RCX: 00007f2035d8ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f2035e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2035fb6128 R14: 00007f2035fb6090 R15: 00007fffb63e4268
 </TASK>
sched: DL replenish lagged too much
