------------[ cut here ]------------
WARNING: CPU: 2 PID: 23 at net/wireless/scan.c:1788 cfg80211_combine_bsses net/wireless/scan.c:1788 [inline]
WARNING: CPU: 2 PID: 23 at net/wireless/scan.c:1788 __cfg80211_bss_update+0x1cf3/0x23c0 net/wireless/scan.c:2029
Modules linked in:
CPU: 2 UID: 0 PID: 23 Comm: ksoftirqd/2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:cfg80211_combine_bsses net/wireless/scan.c:1788 [inline]
RIP: 0010:__cfg80211_bss_update+0x1cf3/0x23c0 net/wireless/scan.c:2029
Code: d2 d6 f6 48 8d 7b 98 e8 5b 5b ff ff e9 56 f2 ff ff e8 81 d2 d6 f6 48 8d 7b 98 e8 48 5b ff ff e9 b4 f2 ff ff e8 6e d2 d6 f6 90 <0f> 0b 90 48 8b 7c 24 40 e8 20 0a 06 fa 31 ff 89 c6 88 44 24 60 e8
RSP: 0018:ffffc9000061f2a8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff8ae4b08e
RDX: ffff88801e2c0000 RSI: ffffffff8ae4b992 RDI: 0000000000000005
RBP: ffff88805113b868 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888024f08190
R13: ffff88805113b800 R14: ffff888050bb1400 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880d68b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d5ffff CR3: 00000000501d2000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 cfg80211_inform_single_bss_data+0x7ba/0x1df0 net/wireless/scan.c:2375
 cfg80211_inform_bss_data+0x224/0x3bd0 net/wireless/scan.c:3234
 cfg80211_inform_bss_frame_data+0x26f/0x750 net/wireless/scan.c:3325
 ieee80211_bss_info_update+0x310/0xab0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x4cf/0xb30 net/mac80211/scan.c:355
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5186 [inline]
 ieee80211_rx_list+0x1bdb/0x2980 net/mac80211/rx.c:5423
 ieee80211_rx_napi+0xdc/0x410 net/mac80211/rx.c:5446
 ieee80211_rx include/net/mac80211.h:5210 [inline]
 ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:453
 tasklet_action_common+0x281/0x400 kernel/softirq.c:829
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 run_ksoftirqd kernel/softirq.c:968 [inline]
 run_ksoftirqd+0x3a/0x60 kernel/softirq.c:960
 smpboot_thread_fn+0x3f4/0xae0 kernel/smpboot.c:160
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>