linux-kernel - Re: [syzbot] [wireless?] [reiserfs?] general protection fault in __iterate

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Message-ID: <d15cd98d8612e756b4c22a10394d680342512c44.camel@sipsolutions.net>
Date:   Fri, 23 Jun 2023 13:08:23 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     syzbot <syzbot+1c54f0eff457978ad5f9@...kaller.appspotmail.com>,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, reiserfs-devel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [wireless?] [reiserfs?] general protection fault in
 __iterate_interfaces

On Thu, 2023-06-01 at 14:24 -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    715abedee4cd Add linux-next specific files for 20230515
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=13c96725280000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=6a2745d066dda0ec
> dashboard link: https://syzkaller.appspot.com/bug?extid=1c54f0eff457978ad5f9
> 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=1588e999280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1013cbc1280000
> 

Looking at the reproducers, there's basically nothing happening in wifi.

So seems likely it's just some really bad memory corruption issue in
reiserfs?

johannes