linux-kernel - Re: [syzbot] UBSAN: array-index-out-of-bounds in pvr2_i2c_core

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Message-ID: <88a47762-fac7-6158-1730-344bb2905fc9@gmail.com>
Date:   Thu, 14 Apr 2022 23:04:15 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     syzbot <syzbot+1a247e36149ffd709a9b@...kaller.appspotmail.com>,
        isely@...ox.com, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, mchehab@...nel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] UBSAN: array-index-out-of-bounds in pvr2_i2c_core_init

Hi Syzbot,

On 4/14/22 21:47, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    4ea3c6425269 Merge tag 'powerpc-5.18-2' of git://git.kerne..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=148cb824f00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=307baecfd5e87ced
> dashboard link: https://syzkaller.appspot.com/bug?extid=1a247e36149ffd709a9b
> 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=17279a70f00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=121dc124f00000
> 
> Bisection is inconclusive: the issue happens on the oldest tested release.
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=142753df700000
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=162753df700000
> console output: https://syzkaller.appspot.com/x/log.txt?x=122753df700000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:


just guessing


#syz test:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master




With regards,
Pavel Skripkin

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