rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10234 ticks this GP) idle=881c/1/0x4000000000000000 softirq=13889/13889 fqs=4237
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1089021          0            0
rcu: 	cputime:    36742      15737           44   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=8869 q=2427 ncpus=2)
CPU: 1 UID: 0 PID: 6216 Comm: syz.1.86 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:check_preemption_disabled+0x35/0x120
Code: 48 8b 05 de 64 43 07 48 89 44 24 08 65 8b 05 e6 64 43 07 65 8b 0d db 64 43 07 f7 c1 ff ff ff 7f 74 23 65 48 8b 0d bb 64 43 07 <48> 3b 4c 24 08 0f 85 cc 00 00 00 48 83 c4 10 5b 41 5e 41 5f 5d c3
RSP: 0018:ffffc900001dfaf8 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffffffff90575001 RCX: 099037f129c35600
RDX: ffffc900001dfc01 RSI: ffffffff8c03d4c0 RDI: ffffffff8c03d480
RBP: dffffc0000000000 R08: ffffc9000660f138 R09: 0000000000000000
R10: ffffc900001dfcd8 R11: fffff5200003bf9d R12: ffffc9000660f148
R13: ffffffff81742d25 R14: ffffffff8e33d360 R15: ffffffff81742d25
FS:  00007f45f4eb16c0(0000) GS:ffff8881a3a03000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d16ff8 CR3: 0000000109aec000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 rcu_is_watching+0x15/0xb0
 lock_release+0x4b/0x3e0
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x19a/0x6d0
 ieee80211_inform_bss+0xbd9/0x10a0
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 cfg80211_inform_bss_data+0x203/0x3b40
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x749/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x210c/0x2b90
 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:rcu_read_unlock_special+0x87/0x4b0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 62 1d 1a 11 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc9000660f060 EFLAGS: 00000206
RAX: 099037f129c35600 RBX: 1ffff92000cc1e10 RCX: 099037f129c35600
RDX: 0000000000000006 RSI: ffffffff8db9e7a7 RDI: ffffffff8c03d4e0
RBP: ffffc9000660f138 R08: ffffffff8fc34277 R09: 1ffffffff1f8684e
R10: dffffc0000000000 R11: fffffbfff1f8684f R12: ffffffff8e342600
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0x157/0x9c0
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 smp_call_function_single+0x470/0x590
 perf_install_in_context+0x593/0x8f0
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f45f3f8ec29
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:00007f45f4eb1038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f45f41d6090 RCX: 00007f45f3f8ec29
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f45f4011e41 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f45f41d6128 R14: 00007f45f41d6090 R15: 00007ffde455f898
 </TASK>
sched: DL replenish lagged too much
