rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10080 ticks this GP) idle=da24/1/0x4000000000000000 softirq=57373/57374 fqs=4355
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1179924          5            0
rcu: 	cputime:    31570      20909           40   ==> 52490(ms)
rcu: 	(t=10502 jiffies g=46789 q=7951 ncpus=2)
CPU: 0 UID: 0 PID: 12631 Comm: syz.3.1711 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+0xa8/0x110
Code: 74 05 e8 6b c0 49 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 23 65 12 f6 65 8b 05 6c 41 23 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90000006ee0 EFLAGS: 00000206
RAX: 392584d5239fa500 RBX: 0000000000000a02 RCX: 392584d5239fa500
RDX: 0000000000000002 RSI: ffffffff8d9baf27 RDI: 0000000000000001
RBP: ffffc90000006f60 R08: ffffffff8fa3b537 R09: 1ffffffff1f476a6
R10: dffffc0000000000 R11: fffffbfff1f476a7 R12: dffffc0000000000
R13: ffff88803cf97460 R14: ffffffff99c99bb0 R15: 1ffff92000000ddc
FS:  00007fee62c8b6c0(0000) GS:ffff8880b8611000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc2250a990 CR3: 0000000126ff6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 debug_object_activate+0x2e2/0x420
 kvfree_call_rcu+0x4f/0x410
 cfg80211_update_known_bss+0x84b/0x13c0
 __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:lock_is_held_type+0x13e/0x190
Code: 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 f9 d3 25 07 48 3b 44 24 08 75 43 <89> d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc
RSP: 0018:ffffc900037a79b8 EFLAGS: 00000246
RAX: 392584d5239fa500 RBX: 0000000000000000 RCX: 392584d5239fa500
RDX: ffff888108df9cc0 RSI: ffffffff8dbaa5db RDI: ffffffff8be34480
RBP: 00000000ffffffff R08: 0000000000000000 R09: ffffffff81844d02
R10: dffffc0000000000 R11: fffffbfff1f476a7 R12: 0000000000000246
R13: ffff888108df9cc0 R14: ffffffff8e13a1c0 R15: 0000000000000001
 rcu_read_lock_any_held+0x9e/0x120
 exit_signals+0x86/0x580
 do_exit+0x352/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee61d8ec29
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:00007fee62c8b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000010 RBX: 00007fee61fd5fa0 RCX: 00007fee61d8ec29
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007fee61e11e41 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee61fd6038 R14: 00007fee61fd5fa0 R15: 00007ffc6d875c58
 </TASK>
sched: DL replenish lagged too much
