------------[ cut here ]------------
ODEBUG: activate active (active state 1) object: ffff88801e683180 object type: rcu_head hint: 0x0
WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 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:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 67 d3 52 fd 4d 8b 0f 48 c7 c7 a0 53 e3 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 0a 73 b1 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 37 0a d2 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc9000041ec50 EFLAGS: 00010296
RAX: 9823eb705d399600 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc90001031000 RSI: 00000000000009b9 RDI: 00000000000009ba
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: 0000000000000000
R13: ffffffff8be35520 R14: ffff88801e683180 R15: ffffffff8b8bd420
FS:  0000000000000000(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002a80 CR3: 000000003f92b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 debug_object_activate+0x26a/0x420 lib/debugobjects.c:842
 debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
 kvfree_call_rcu+0x4f/0x410 mm/slab_common.c:1953
 cfg80211_update_known_bss+0x634/0x1330 net/wireless/scan.c:1936
 __cfg80211_bss_update+0x147/0x2120 net/wireless/scan.c:1983
 cfg80211_inform_single_bss_data+0xba9/0x1ac0 net/wireless/scan.c:2375
 cfg80211_inform_bss_data+0x1fb/0x3b30 net/wireless/scan.c:3234
 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3325
 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5186 [inline]
 ieee80211_rx_list+0x201c/0x2a90 net/mac80211/rx.c:5423
 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5446
 ieee80211_rx include/net/mac80211.h:5210 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453
 tasklet_action_common+0x369/0x580 kernel/softirq.c:829
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>