rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (6938 ticks this GP) idle=8c4c/1/0x4000000000000000 softirq=23754/23754 fqs=4385
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   759889          0            0
rcu: 	cputime:    37644      14834          124   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=16441 q=29557 ncpus=2)
CPU: 1 UID: 0 PID: 7790 Comm: syz.3.524 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+0x36c/0x2390
Code: 14 6d 00 00 00 00 4c 01 ea 48 01 d2 48 01 f2 48 bd 00 00 00 00 00 fc ff df 0f 84 37 01 00 00 4c 8d 62 04 4c 8d 6a 05 4c 89 e0 <48> c1 e8 03 0f b6 04 28 84 c0 0f 85 6d 19 00 00 4c 89 e8 48 c1 e8
RSP: 0018:ffffc900001dfb98 EFLAGS: 00000286
RAX: ffffffff902a8edc RBX: ffffffff8fb1832c RCX: ffffffff8fb18330
RDX: ffffffff902a8ed8 RSI: ffffffff902a8e78 RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000018 R09: ffffffff8172c195
R10: ffffc900001dfcb8 R11: ffffffff81ac3890 R12: ffffffff902a8edc
R13: ffffffff902a8edd R14: ffffc900001dfc68 R15: ffffffff8fb1832c
FS:  00007f955456c6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000120a06000 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: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: 0018:ffffc90004dc7a40 EFLAGS: 00000286
RAX: e73f854f14b81000 RBX: 0000000000000000 RCX: e73f854f14b81000
RDX: 0000000000000006 RSI: ffffffff8d9b6dc3 RDI: 0000000000000001
RBP: ffffc90004dc7ae0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920009b8f48
 irqentry_exit+0x6f/0x90
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:perf_install_in_context+0x72d/0x8f0
Code: 00 00 42 c7 44 23 08 00 00 00 00 42 c7 44 23 10 00 00 00 00 65 48 8b 05 21 35 b0 10 48 3b 84 24 00 01 00 00 0f 85 5b 01 00 00 <48> 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c0 10 8c 09 cc e8 8a
RSP: 0018:ffffc90004dc7ba0 EFLAGS: 00000246
RAX: e73f854f14b81000 RBX: 1ffff920009b8f80 RCX: ffff888029340000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004dc7cf0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: dffffc0000000000
R13: ffff888029340014 R14: ffffc90004dc7c20 R15: dffffc0000000000
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f955378ebe9
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:00007f955456c038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f95539b6090 RCX: 00007f955378ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000012c0
RBP: 00007f9553811e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f95539b6128 R14: 00007f95539b6090 R15: 00007fffd2b6eec8
 </TASK>
sched: DL replenish lagged too much
