[syzbot] [wireless?] WARNING in ieee80211_set_disassoc (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 189f164e573e Convert remaining multi-line kmalloc_obj/flex..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1750855a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=2208a171312e89b7
dashboard link: https://syzkaller.appspot.com/bug?extid=4b737df95e84787fec21
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-189f164e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/669b52dbab53/vmlinux-189f164e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/51b76feb584c/bzImage-189f164e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4b737d...@syzkaller.appspotmail.com

mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
wlan1: deauthenticating from 08:02:11:00:00:00 by local choice (Reason: 3=DEAUTH_LEAVING)
------------[ cut here ]------------
!ap_sta
WARNING: net/mac80211/mlme.c:4137 at ieee80211_set_disassoc+0x3c8/0x1a90 net/mac80211/mlme.c:4137, CPU#0: syz.0.0/5315
Modules linked in:
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ieee80211_set_disassoc+0x3c8/0x1a90 net/mac80211/mlme.c:4137
Code: c4 8c f6 45 85 ff 0f 84 c9 11 00 00 e8 81 c0 8c f6 eb 2b e8 7a c0 8c f6 48 83 7c 24 48 00 0f 85 38 fe ff ff e8 69 c0 8c f6 90 <0f> 0b 90 e9 aa 10 00 00 e8 5b c0 8c f6 eb 05 e8 54 c0 8c f6 48 8d
RSP: 0018:ffffc9000dd4efa0 EFLAGS: 00010287
RAX: ffffffff8b38dab7 RBX: ffff888038b28dc0 RCX: 0000000000100000
RDX: ffffc9000ec12000 RSI: 000000000001762f RDI: 0000000000017630
RBP: ffffc9000dd4f0b0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc9000dd4f1e0 R11: fffff52001ba9e3f R12: ffff888038b297f0
R13: dffffc0000000000 R14: 1ffff92001ba9e04 R15: ffffc9000dd4f1e0
FS: 00007f5691c2d6c0(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc7ffad0c8 CR3: 0000000035dd8000 CR4: 0000000000352ef0
Call Trace:
<TASK>
ieee80211_mgd_deauth+0x9fa/0xe60 net/mac80211/mlme.c:10198
rdev_deauth net/wireless/rdev-ops.h:509 [inline]
cfg80211_mlme_deauth+0x51b/0x8f0 net/wireless/mlme.c:536
cfg80211_sme_disconnect net/wireless/sme.c:666 [inline]
cfg80211_disconnect+0x3b2/0x7c0 net/wireless/sme.c:1559
cfg80211_netdev_notifier_call+0x1ba/0x1470 net/wireless/core.c:1599
notifier_call_chain+0x1be/0x400 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
call_netdevice_notifiers net/core/dev.c:2301 [inline]
__dev_close_many+0x119/0x6d0 net/core/dev.c:1746
netif_close_many+0x225/0x420 net/core/dev.c:1800
netif_close+0x160/0x220 net/core/dev.c:1817
dev_close+0x10a/0x220 net/core/dev_api.c:220
cfg80211_shutdown_all_interfaces+0xc4/0x200 net/wireless/core.c:282
cfg80211_rfkill_set_block+0x2d/0x50 net/wireless/core.c:312
rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346
rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301
vfs_write+0x29a/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5690d9c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5691c2d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f5691015fa0 RCX: 00007f5690d9c629
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000006
RBP: 00007f5690e32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5691016038 R14: 00007f5691015fa0 R15: 00007fff6e9cd5a8
</TASK>


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