rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10501 ticks this GP) idle=33b4/1/0x4000000000000000 softirq=19432/19432 fqs=5107
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   800115          0            0
rcu: 	cputime:    36929      15552           60   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=12309 q=3369 ncpus=2)
CPU: 1 UID: 0 PID: 6377 Comm: syz.5.87 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+0x6b/0x2390
Code: 89 5c 24 18 49 8b 5e 48 4d 8d 6e 38 4c 89 e8 48 c1 e8 03 48 89 44 24 58 80 3c 28 00 74 08 4c 89 ef e8 49 0a b1 00 4d 8b 7e 38 <4d> 89 f4 49 c1 ec 03 41 0f b6 04 2c 84 c0 0f 85 de 1b 00 00 41 8b
RSP: 0018:ffffc900001dfd38 EFLAGS: 00000246
RAX: 1ffff9200003bfc8 RBX: ffffffff8ace3fe7 RCX: 767ab77b7a89c800
RDX: dffffc0000000000 RSI: ffffffff8ace3fe7 RDI: ffffc900001dfe08
RBP: dffffc0000000000 R08: ffffc900001dfed0 R09: 0000000000000005
R10: ffffc900001dfe58 R11: ffffffff81ac4d00 R12: ffff888021633980
R13: ffffc900001dfe40 R14: ffffc900001dfe08 R15: ffffc900001e07a8
FS:  00007f7d936d76c0(0000) GS:ffff8881a3c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000021234000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
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: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 ab ea 13 f6 e8 76 47 4b 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: 0018:ffffc90002d2f940 EFLAGS: 00000286
RAX: 767ab77b7a89c800 RBX: 0000000000000000 RCX: 767ab77b7a89c800
RDX: 0000000000000006 RSI: ffffffff8d9bad57 RDI: 0000000000000001
RBP: ffffc90002d2f9e0 R08: ffffffff8fa3b437 R09: 1ffffffff1f47686
R10: dffffc0000000000 R11: fffffbfff1f47687 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005a5f28
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:smp_call_function_single+0x3fa/0x590
Code: e8 0b 90 6f 00 eb db e8 f4 75 0b 00 44 8b 24 24 bf 01 00 00 00 e8 26 c4 db ff 65 8b 1d af 94 ec 10 31 ff 89 de e8 16 7a 0b 00 <85> db 74 68 e8 cd 75 0b 00 48 c7 44 24 20 0e 36 e0 45 43 c7 04 2e
RSP: 0018:ffffc90002d2faa0 EFLAGS: 00000297
RAX: ffffffff81b44b8a RBX: 0000000080000000 RCX: 0000000000000002
RDX: ffff888021633980 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90002d2fb90 R08: ffffffff8fa3b437 R09: 1ffffffff1f47686
R10: dffffc0000000000 R11: fffffbfff1f47687 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff920005a5f58 R15: 1ffff920005a5f58
 perf_install_in_context+0x593/0x8f0
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d9278ec29
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:00007f7d936d7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7d929d5fa0 RCX: 00007f7d9278ec29
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f7d92811e41 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d929d6038 R14: 00007f7d929d5fa0 R15: 00007fffe3e6e4f8
 </TASK>
sched: DL replenish lagged too much
