[v6.6] WARNING in mac80211_hwsim_sta_rc_update

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 0a40c6fbd105 Linux 6.6.141
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1461712e580000
kernel config: https://syzkaller.appspot.com/x/.config?x=c5b35c4db8465904
dashboard link: https://syzkaller.appspot.com/bug?extid=dbd6e470a43336ac48ff
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: https://storage.googleapis.com/syzbot-assets/bef5f7e53495/disk-0a40c6fb.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/61ce39aaab25/vmlinux-0a40c6fb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/43d2363e7871/bzImage-0a40c6fb.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+dbd6e4...@syzkaller.appspotmail.com

intf 08:02:11:00:00:00 [link=0]: bad STA 08:02:11:00:00:01 bandwidth 20 MHz (0) > channel config 1 MHz (8)
WARNING: CPU: 1 PID: 28756 at drivers/net/wireless/virtual/mac80211_hwsim.c:2586 mac80211_hwsim_sta_rc_update+0x6da/0x840 drivers/net/wireless/virtual/mac80211_hwsim.c:2583
Modules linked in:
CPU: 1 PID: 28756 Comm: syz.0.5821 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:mac80211_hwsim_sta_rc_update+0x6da/0x840 drivers/net/wireless/virtual/mac80211_hwsim.c:2583
Code: e8 0b 16 00 00 48 c7 c7 40 0e 65 8b 48 8b 74 24 28 89 ea 48 8b 4c 24 10 41 89 d8 45 89 e1 41 57 50 e8 7a e1 18 fb 48 83 c4 10 <0f> 0b e9 10 ff ff ff e8 ca 2f 4f fb 0f 0b e9 04 ff ff ff e8 be 2f
RSP: 0018:ffffc9000c396fe0 EFLAGS: 00010282
RAX: 15d109ddf8bc7f00 RBX: 0000000000000014 RCX: 0000000000080000
RDX: ffffc9000d02b000 RSI: 00000000000120f5 RDI: 00000000000120f6
RBP: 0000000000000000 R08: ffffffff911c95f7 R09: 1ffffffff22392be
R10: dffffc0000000000 R11: fffffbfff22392bf R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000008
FS: 00007fe3fb5d86c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b16c17dac CR3: 000000006a376000 CR4: 00000000003506e0
Call Trace:
<TASK>
mac80211_hwsim_sta_add+0x96/0x280 drivers/net/wireless/virtual/mac80211_hwsim.c:2603
drv_sta_add net/mac80211/driver-ops.h:445 [inline]
drv_sta_state+0x5cf/0x1270 net/mac80211/driver-ops.c:130
sta_info_insert_drv_state net/mac80211/sta_info.c:759 [inline]
sta_info_insert_finish net/mac80211/sta_info.c:872 [inline]
sta_info_insert_rcu+0xc22/0x1770 net/mac80211/sta_info.c:953
sta_info_insert+0x16/0xb0 net/mac80211/sta_info.c:958
rdev_add_station+0xf0/0x240 net/wireless/rdev-ops.h:201
nl80211_new_station+0x16f9/0x1b00 net/wireless/nl80211.c:7646
genl_family_rcv_msg_doit+0x211/0x310 net/netlink/genetlink.c:971
genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
genl_rcv_msg+0x619/0x7a0 net/netlink/genetlink.c:1066
netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe3fa79ce59
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:00007fe3fb5d8028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe3faa15fa0 RCX: 00007fe3fa79ce59
RDX: 0000000000000000 RSI: 0000200000001080 RDI: 0000000000000006
RBP: 00007fe3fa832d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe3faa16038 R14: 00007fe3faa15fa0 R15: 00007fff0f0a2e98
</TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup