rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10459 ticks this GP) idle=f954/1/0x4000000000000000 softirq=93007/93008 fqs=4556
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   798590          1            0
rcu: 	cputime:    37609      14880           57   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=88857 q=2677 ncpus=2)
CPU: 0 UID: 0 PID: 22086 Comm: syz.7.4427 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #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:__read_once_word_nocheck+0x3/0x10
Code: b0 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 <e9> d8 53 07 0a cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0000:ffffc90000006b90 EFLAGS: 00000202
RAX: ffffffff8acae114 RBX: ffffc90000007048 RCX: 1ffff92000000d01
RDX: ffffffff903df950 RSI: 0000000000000002 RDI: ffffc90000007048
RBP: 1ffff92000000d8e R08: 000000000000000f R09: ffffffff8172c025
R10: ffffc90000006cb8 R11: ffffffff81ac34b0 R12: ffffc90000008000
R13: 1ffff92000000d8f R14: ffffc90000006c68 R15: ffffc90000000000
FS:  00007ff9cb62e6c0(0000) GS:ffff8880b862a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5733fdba8 CR3: 00000000208ae000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000602
Call Trace:
 <IRQ>
 unwind_next_frame+0xc3c/0x2390
 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+0x19e5/0x4cc0
Code: ff ff 48 89 df 48 83 c7 18 8b b4 24 98 01 00 00 e8 90 22 25 f6 48 89 df e8 f8 fe 18 f6 48 89 df e8 40 dc 19 f6 48 8b 5c 24 08 <e9> b6 fd ff ff 90 0f 0b 90 e9 cf fb ff ff c6 05 95 b7 14 04 01 90
RSP: 0000:ffffc9000a487ba0 EFLAGS: 00000282
RAX: 401907123e2ce100 RBX: ffff888022e7d640 RCX: 401907123e2ce100
RDX: 0000000000000000 RSI: ffffffff8d9b1618 RDI: ffffffff8be2fd00
RBP: ffffc9000a487db0 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888022e7d640 R15: 1ffff11009607551
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 6b 2b b9 f5 cc
RSP: 0000:ffffc9000a487f30 EFLAGS: 00000286
RAX: 401907123e2ce100 RBX: ffffc9000a487f58 RCX: 401907123e2ce100
RDX: 0000000000000000 RSI: ffffffff8d9b1618 RDI: ffffffff8be2fd00
RBP: 0000000000000000 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888022e7d640 R15: 0000000000000008
 irqentry_exit_to_user_mode+0x51/0x120
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7ff9ca654348
Code: c4 08 c3 0f 1f 80 00 00 00 00 48 83 ec 08 48 89 f2 48 63 ff 4c 89 d6 41 51 31 c0 4d 89 c1 49 89 c8 4c 89 d9 e8 09 a8 13 00 5a <59> 48 83 c4 08 c3 66 90 41 57 41 56 41 55 49 89 f5 41 54 49 29 fd
RSP: 002b:00007ff9cb62e048 EFLAGS: 00000203
RAX: 0000000000000009 RBX: 00007ff9ca9b5fa0 RCX: 00007ff9ca78eb69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007ff9ca811df1 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff9ca9b5fa0 R15: 00007fff3879d388
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 99186430395 wd_nsec: 99186432595
