rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10396 ticks this GP) idle=8afc/1/0x4000000000000000 softirq=25793/25793 fqs=4113
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1143249          0            0
rcu: 	cputime:    32210      20279           82   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=17937 q=1682 ncpus=2)
CPU: 0 UID: 0 PID: 7505 Comm: syz.4.445 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+0x395/0x2390
Code: e0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 6d 19 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 80 19 00 00 41 0f b6 44 24 01 <83> e0 07 0f 84 75 15 00 00 83 f8 01 4c 8b 7c 24 48 48 bd 00 00 00
RSP: 0018:ffffc90000006bf8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff8fc02968 RCX: ffffffff8fc0296c
RDX: ffffffff904087c8 RSI: ffffffff904087aa RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000009 R09: ffffffff8172c195
R10: ffffc90000006d18 R11: ffffffff81ac3930 R12: ffffffff904087cc
R13: ffffffff904087cd R14: ffffc90000006cc8 R15: ffffffff8fc02968
FS:  00007f53911fb6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f53911b9d58 CR3: 00000000281a6000 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_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kfree+0x18e/0x440
 ieee80211_inform_bss+0xbd9/0x10a0
 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:kasan_check_range+0xad/0x2c0
Code: 49 83 fc 10 7f 29 4d 85 e4 0f 84 41 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 0f 85 de 01 00 00 49 ff c3 48 ff c3 75 ee <e9> 21 01 00 00 44 89 dd 83 e5 07 0f 84 b5 00 00 00 41 80 3b 00 4d
RSP: 0018:ffffc9000429f5a8 EFLAGS: 00000256
RAX: 00000000ffffff01 RBX: 0000000000000000 RCX: ffffffff819e00d2
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8dfab280
RBP: ffffc9000429f698 R08: ffffffff8dfab283 R09: 1ffffffff1bf5650
R10: dffffc0000000000 R11: fffffbfff1bf5651 R12: 0000000000000001
R13: ffffffff8dfab288 R14: fffffbfff1bf5651 R15: 1ffffffff1bf5650
 do_raw_spin_lock+0x112/0x290
 pgd_free+0x51/0x1e0
 __mmdrop+0xb5/0x580
 finish_task_switch+0x3ee/0x950
 __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/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f539038ebe9
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:00007f53911fb038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f53905b5fa0 RCX: 00007f539038ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007f5390411e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f53905b6038 R14: 00007f53905b5fa0 R15: 00007ffc58eb3148
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104192570973 wd_nsec: 104192563539
