rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=9044/1/0x4000000000000000 softirq=23147/23149 fqs=4336
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   808424          0            0
rcu: 	cputime:    37536      14953           58   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=16541 q=3484 ncpus=2)
CPU: 1 UID: 0 PID: 8412 Comm: syz.1.722 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:kvfree_call_rcu+0x51/0x410
Code: ff 75 16 48 c7 c7 4c 31 b5 8d be 9e 07 00 00 e8 a5 0a 8d ff 2e 2e 2e 31 c0 48 89 df 48 c7 c6 a0 d3 8b 8b e8 f1 6a cb 02 89 c5 <48> 89 df 48 c7 c6 a0 d3 8b 8b 31 d2 b9 01 00 00 00 e8 a9 7c cb 02
RSP: 0018:ffffc900001dfff0 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff88812326b780 RCX: 0000000000000300
RDX: 0000000000000002 RSI: ffffffff8d9b6a0a RDI: 00000000ffffffff
RBP: 0000000000000000 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff88812326b788
R13: ffffc900001e0280 R14: ffff88803a9bf000 R15: ffff88812326b780
FS:  00007fc471db46c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc473c11e19 CR3: 000000010a336000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 cfg80211_update_known_bss+0x634/0x1330
 __cfg80211_bss_update+0x147/0x2120
 cfg80211_inform_single_bss_data+0xba9/0x1ac0
 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 fb 98 15 f6 e8 36 f3 4c 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:ffffc9000a887840 EFLAGS: 00000286
RAX: 4a743e695fd54500 RBX: ffff88803a4f3980 RCX: 4a743e695fd54500
RDX: 0000000000000006 RSI: ffffffff8d9b6a0a RDI: 0000000000000001
RBP: ffffc9000a8878f0 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001510f08
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_common+0x2/0xd0
Code: cc e8 22 00 00 00 eb cc e8 0b d7 fe ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 53 49 bf 00 00 00 00 00 fc ff df eb 0d 48 f7 03 08 00 00 00
RSP: 0018:ffffc9000a8879b0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff92001510f38 RCX: ffff88803a4f3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000a887a38 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92001510f58
 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: 0033:0x7fc473b8ebe9
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:00007fc471db4038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc473db6180 RCX: 00007fc473b8ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000012c0
RBP: 00007fc473c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc473db6218 R14: 00007fc473db6180 R15: 00007ffcedea0f68
 </TASK>
sched: DL replenish lagged too much
