rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10470 ticks this GP) idle=440c/1/0x4000000000000000 softirq=31842/31845 fqs=4409
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1011774          0            0
rcu: 	cputime:    37574      14905           49   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=20981 q=3008 ncpus=2)
CPU: 1 UID: 0 PID: 9959 Comm: syz.5.1329 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:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 9d 6d 24 f6 f7 c3 00 02 00 00 74 05 e8 b0 01 4f f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 14 7b 16 f6 65 8b 05 4d 18 54 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0000:ffffc90000a08100 EFLAGS: 00000206
RAX: 0000000000000016 RBX: 0000000000000282 RCX: 0000000000000303
RDX: 0000000000000002 RSI: ffffffff8dad37f0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: ffff8881a61fd400
R13: ffff8881a61fd000 R14: ffffffff9a0a1a58 R15: 0000000000000001
FS:  00007f60b7a3a6c0(0000) GS:ffff8882a9928000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000001a5402000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 debug_check_no_obj_freed+0x52e/0x550
 kfree+0x139/0x650
 ieee80211_inform_bss+0xc75/0x1160
 cfg80211_inform_single_bss_data+0xcf9/0x1ab0
 cfg80211_inform_bss_data+0x233/0x3bb0
 cfg80211_inform_bss_frame_data+0x3c7/0x710
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x2508/0x3050
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x7c0
 __irq_exit_rcu+0x5f/0x150
 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+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 e2 17 f6 e8 9e 6a 50 f6 fb bf 01 00 00 00 <e8> e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 6c 50 f6 bf 01
RSP: 0000:ffffc90004c67dc0 EFLAGS: 00000206
RAX: 0000000000016a47 RBX: ffff888111b0ba80 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:irqentry_exit+0x14e/0x620
Code: 00 00 c0 4c 8d a0 00 e0 ff 3f bd ff ff ff 9f 4c 8d 7c 24 18 f7 c7 37 03 00 00 74 64 49 89 fd e8 08 92 51 f6 4c 89 e8 fb a8 30 <74> 08 e8 0b 21 01 00 4c 89 e8 a9 00 01 00 00 74 0b 4c 89 f7 e8 d9
RSP: 0000:ffffc90004c67ee8 EFLAGS: 00000202
RAX: 0000000000000010 RBX: ffff888111b0ba80 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: ffffffff8be74080
RBP: 000000009fffffff R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 00000000ffffe000
R13: 0000000000000010 R14: ffffc90004c67f48 R15: ffffc90004c67f00
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f60b6b9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f60b7a3a0e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007f60b6e15fa8 RCX: 00007f60b6b9acb9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f60b6e15fac
RBP: 00007f60b6e15fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f60b6e16038 R14: 00007ffd070a6860 R15: 00007ffd070a6948
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 108487541939 wd_nsec: 108487544508
