rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (8310 ticks this GP) idle=2e8c/1/0x4000000000000000 softirq=16321/16321 fqs=4364
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   783549          0            0
rcu: 	cputime:    37140      15329           63   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=7517 q=3241 ncpus=2)
CPU: 0 UID: 0 PID: 6079 Comm: syz.1.56 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410 #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+0x1d3/0x2390
Code: 8b 27 48 83 f3 01 48 c7 c2 e0 40 88 8b 49 29 dc 0f 84 a2 01 00 00 49 81 fc 00 00 00 81 0f 92 c0 49 81 fc 6c 03 7d 8b 0f 93 c1 <08> c1 0f 85 e8 00 00 00 48 c7 c0 00 00 00 81 4d 89 e7 49 29 c7 49
RSP: 0000:ffffc90000006b98 EFLAGS: 00000293
RAX: 1ffff92000000d00 RBX: 0000000000000001 RCX: eb08eb870eee9600
RDX: ffffffff8b8840e0 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8172c195
R10: ffffc90000006cb8 R11: ffffffff81ac3890 R12: ffffffff8184f4d9
R13: ffffc90000006cb8 R14: ffffc90000006c68 R15: ffffc90000006cb0
FS:  00007f683d8cf6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 0000000028510000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kvfree_call_rcu+0xbb/0x410
 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:__schedule+0x0/0x4cc0
Code: a9 f6 45 89 f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0000:ffffc90004f07db8 EFLAGS: 00000282
RAX: eb08eb870eee9600 RBX: 0000000000000000 RCX: eb08eb870eee9600
RDX: 0000000000000000 RSI: ffffffff8d9b6dc3 RDI: 0000000000000001
RBP: ffffc90004f07e70 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920009e0fb8
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:irqentry_exit_to_user_mode+0x51/0x120
Code: 07 85 c0 0f 85 c3 00 00 00 e8 3b 00 31 f6 65 4c 8b 34 25 08 40 a0 92 49 8b 3e f7 c7 1e 30 02 00 74 53 49 89 ff e8 2f ff 30 f6 <4c> 89 f8 a8 18 74 08 e8 63 1a 01 00 4c 89 f8 a9 00 10 00 00 74 0b
RSP: 0000:ffffc90004f07f38 EFLAGS: 00000286
RAX: eb08eb870eee9600 RBX: ffffc90004f07f58 RCX: eb08eb870eee9600
RDX: 0000000000000000 RSI: ffffffff8d9b6dc3 RDI: ffffffff8be33300
RBP: 0000000000000000 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88803aeb1cc0 R15: 0000000000000008
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f683d8d6a90
Code: 89 e5 48 8d 05 91 95 ff ff 31 c9 81 3d 89 95 ff ff ff ff ff 7f 0f 94 c1 c1 e1 0c 48 8b 44 01 28 48 85 ff 74 03 48 89 07 5d c3 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 48 83
RSP: 002b:00007f683d8cf048 EFLAGS: 00000206
RAX: 00007f683d8d6a90 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 00007f683ca9a7e0 RSI: 00007f683d8cf0b0 RDI: 0000000000000001
RBP: 00007f683ca23b64 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f683cbb6038 R14: 00007f683cbb5fa0 R15: 00007fffe6c23828
 </TASK>
sched: DL replenish lagged too much
