rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=370c/1/0x4000000000000000 softirq=14726/14921 fqs=5011
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1042488        604            0
rcu: 	cputime:    35627      16849           52   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=6649 q=3462 ncpus=2)
CPU: 0 UID: 0 PID: 6197 Comm: syz.2.100 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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+0x64c/0x2390
Code: 9b b0 00 48 8b 3b 48 85 ff 0f 84 5b 10 00 00 48 83 c7 10 e9 73 01 00 00 83 fb 04 0f 84 7b 01 00 00 83 fb 05 0f 85 36 0c 00 00 <48> 8b 44 24 58 80 3c 28 00 74 11 4c 89 ff e8 b1 9b b0 00 48 8b 34
RSP: 0018:ffffc90000006b98 EFLAGS: 00000246
RAX: ffffc90000006c9d RBX: 0000000000000005 RCX: ffffffff901e372c
RDX: ffffffff90ce44c0 RSI: ffffffff90ce44c4 RDI: ffffffff8be29ee0
RBP: dffffc0000000000 R08: 000000000000000f R09: ffffffff8172aae5
R10: ffffc90000006900 R11: ffffffffa0002194 R12: ffffffff90ce44c5
R13: ffffc90000006cb8 R14: ffffc90000006c68 R15: ffffc90000006ca0
FS:  00007ff99f7f66c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005a00 CR3: 00000001160b6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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/0x3b20
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x746/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x22fc/0x2d80
 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_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:__schedule+0x8f/0x4d00
Code: 8b 48 8d 8c 24 00 01 00 00 48 c1 e9 03 48 b8 f1 f1 f1 f1 04 f2 00 00 4a 89 04 29 48 b8 f2 f2 f2 f2 f2 00 f2 f2 4a 89 44 29 09 <42> c7 44 29 11 f2 00 00 f3 66 42 c7 44 29 15 f3 f3 48 89 8c 24 f8
RSP: 0018:ffffc900069cfb60 EFLAGS: 00000a02
RAX: f2f200f2f2f2f2f2 RBX: 0000000000000000 RCX: 1ffff92000d39f8c
RDX: 0000000000000000 RSI: ffffffff8d998874 RDI: ffffc900069cfcf0
RBP: ffffc900069cfd70 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000d39fb0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_syscall_64+0xc3/0x3b0
Code: 00 48 8b 7d 08 48 89 7b 18 e8 49 5a 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 59 84 59 f6 90 90 e8 02 84 59 f6 fb 49 8b 57 08 <f6> c2 3f 74 0e 4c 89 f7 4c 89 ee e8 5d dc 3c f6 49 89 c4 90 90 41
RSP: 0018:ffffc900069cfef0 EFLAGS: 00000286
RAX: 137d4ee15f510400 RBX: ffffc900069cfef0 RCX: 137d4ee15f510400
RDX: 0000000000000000 RSI: ffffffff8d998874 RDI: ffffffff8be29f40
RBP: ffffc900069cff48 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 00000000000000ca
R13: 00000000000000ca R14: ffffc900069cff58 R15: ffff888022501cc0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff9a198e9a9
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:00007ff99f7f60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007ff9a1bb5fa8 RCX: 00007ff9a198e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007ff9a1bb5fac
RBP: 00007ff9a1bb5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007ff9a1bb5fac
R13: 0000000000000000 R14: 00007fffd0b56170 R15: 00007fffd0b56258
 </TASK>
sched: DL replenish lagged too much
