linux-kernel - Re: [syzbot] [block?] KASAN: use-after-free Read in netdev_core_pick

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Date:   Fri, 31 Mar 2023 17:48:54 +0200
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     syzbot <syzbot+10a7a8ca6e94600110ec@...kaller.appspotmail.com>
Cc:     axboe@...nel.dk, gakula@...vell.com, hdanton@...a.com,
        jiasheng@...as.ac.cn, justin@...aid.com, kuba@...nel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        michal.swiatkowski@...ux.intel.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] KASAN: use-after-free Read in netdev_core_pick_tx

On Fri, Mar 31, 2023 at 5:42 PM syzbot
<syzbot+10a7a8ca6e94600110ec@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit f038f3917baf04835ba2b7bcf2a04ac93fbf8a9c
> Author: Jiasheng Jiang <jiasheng@...as.ac.cn>
> Date:   Fri Mar 17 06:43:37 2023 +0000
>
>     octeontx2-vf: Add missing free for alloc_percpu
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=133a3d2ec80000
> start commit:   42226c989789 Linux 5.18-rc7
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d84df8e1a4c4d5a4
> dashboard link: https://syzkaller.appspot.com/bug?extid=10a7a8ca6e94600110ec
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11ed1369f00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=166b22cef00000
>
> If the result looks correct, please mark the issue as fixed by replying with:

No, the commit is unfortunately unrelated.

>
> #syz fix: octeontx2-vf: Add missing free for alloc_percpu
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> --
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