rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=83ac/1/0x4000000000000000 softirq=35861/35861 fqs=4490
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   765019          0            0
rcu: 	cputime:    37879      14610           63   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=26129 q=2084 ncpus=2)
CPU: 1 UID: 0 PID: 10609 Comm: syz.1.1995 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+0x19c7/0x2390
Code: e0 9e 13 8e 4c 89 fe e8 57 91 2a 00 e8 d2 3b 34 00 89 d8 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <4c> 8b 7c 24 48 eb 89 49 89 f7 48 89 f5 48 89 d8 48 29 e8 48 89 c1
RSP: 0000:ffffc900001dfb98 EFLAGS: 00000297
RAX: ffffc90003738000 RBX: 00000000fbad8001 RCX: dffffc0000000000
RDX: ffffffff902a8e00 RSI: 0000000000000000 RDI: ffffc900001dfc70
RBP: dffffc0000000000 R08: 0000000000000018 R09: ffffffff8172c195
R10: ffffc900001dfcb8 R11: ffffffff81ac3890 R12: 00007f0d99daa7c8
R13: ffffc90003730000 R14: ffffc900001dfc68 R15: ffffc900001dfc78
FS:  00007f0d99dab6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000fbad8001 CR3: 000000010cc8a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
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: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 5b 98 15 f6 e8 96 f2 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: 0000:ffffc90003737dc0 EFLAGS: 00000282
RAX: 19f5a0116eb46b00 RBX: 0000000000000000 RCX: 19f5a0116eb46b00
RDX: 0000000000000000 RSI: ffffffff8d9b6dc3 RDI: 0000000000000001
RBP: ffffc90003737e70 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006e6fb8
 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:ffffc90003737f38 EFLAGS: 00000286
RAX: 19f5a0116eb46b00 RBX: ffffc90003737f58 RCX: 19f5a0116eb46b00
RDX: 0000000000000000 RSI: ffffffff8d9b6dc3 RDI: ffffffff8be33300
RBP: 0000000000000000 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802151d640 R15: 000000000000000a
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f0d98f62b10
Code: 20 da db 62 b2 66 20 26 c3 c5 fb 93 c0 c4 e2 6a f7 c0 85 c0 0f 84 94 fe ff ff 0f bc c0 48 01 d0 c3 66 0f 1f 84 00 00 00 00 00 <66> 0f 6e ce 89 f8 25 ff 0f 00 00 66 0f 60 c9 3d c0 0f 00 00 66 0f
RSP: 002b:00007f0d99daa7c8 EFLAGS: 00000246
RAX: 00007f0d99daaed0 RBX: 00007f0d99daad30 RCX: 0000000000000000
RDX: 00007f0d99daaeb0 RSI: 0000000000000025 RDI: 00007f0d99011b31
RBP: 00000000fbad8001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f0d99011b31
R13: 00007f0d99daaeb0 R14: 0000000000000000 R15: 00007f0d99daad30
 </TASK>
sched: DL replenish lagged too much
