netdev - [syzbot] WARNING: CPU: NUM PID: NUM at net/wireless/ibss.c:LINE __cfg80211_ibss

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Date:   Mon, 08 Aug 2022 22:40:27 -0700
From:   syzbot <syzbot+af9c72450de65fd26129@...kaller.appspotmail.com>
To:     davem@...emloft.net, edumazet@...gle.com,
        johannes@...solutions.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: [syzbot] WARNING: CPU: NUM PID: NUM at net/wireless/ibss.c:LINE __cfg80211_ibss_join

Hello,

syzbot found the following issue on:

HEAD commit:    200e340f2196 Merge tag 'pull-work.dcache' of git://git.ker..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16dd956a080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a3f4d6985d3164cd
dashboard link: https://syzkaller.appspot.com/bug?extid=af9c72450de65fd26129
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=126cccbc080000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10b964b6080000

Bisection is inconclusive: the issue happens on the oldest tested release.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=168a8e61080000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=158a8e61080000
console output: https://syzkaller.appspot.com/x/log.txt?x=118a8e61080000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+af9c72450de65fd26129@...kaller.appspotmail.com

wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
------------[ cut here ]------------
WARNING: CPU: 0 PID: 46 at net/wireless/ibss.c:37 __cfg80211_ibss_join

---
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 syzkaller@...glegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches