linux-kernel - Re: [syzbot] WARNING in ext4_expand_extra_isize

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Date:   Thu, 2 Feb 2023 14:09:41 +0100
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     syzbot <syzbot+4d99a966fd74bdeeec36@...kaller.appspotmail.com>
Cc:     adilger.kernel@...ger.ca, bagasdotme@...il.com,
        ebiggers@...nel.org, guohanjun@...wei.com, jack@...e.cz,
        johnny.chenyi@...wei.com, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, liuyongqiang13@...wei.com,
        miaoxie@...wei.com, patchwork@...wei.com,
        syzkaller-bugs@...glegroups.com, tytso@....edu,
        weiyongjun1@...wei.com, yanaijie@...wei.com, yebin10@...wei.com,
        yebin@...weicloud.com, yuehaibing@...wei.com
Subject: Re: [syzbot] WARNING in ext4_expand_extra_isize_ea

On Thu, Feb 2, 2023 at 1:10 PM syzbot
<syzbot+4d99a966fd74bdeeec36@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit cc12a6f25e07ed05d5825a1664b67a970842b2ca
> Author: Ye Bin <yebin10@...wei.com>
> Date:   Thu Dec 8 02:32:31 2022 +0000
>
>     ext4: allocate extended attribute value in vmalloc area
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14e7b9a5480000
> start commit:   644e9524388a Merge tag 'for-v6.1-rc' of git://git.kernel.o..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8d01b6e3197974dd
> dashboard link: https://syzkaller.appspot.com/bug?extid=4d99a966fd74bdeeec36
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f49603880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=163dfb9b880000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: ext4: allocate extended attribute value in vmalloc area

Looks reasonable.

#syz fix: ext4: allocate extended attribute value in vmalloc area

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
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