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From:   Aleksandr Nogikh <nogikh@google.com>
Date:   Thu, 2 Feb 2023 14:09:41 +0100
Message-ID: <CANp29Y7y=Gr5J3wihAOar-EN-JH1wzcXEJcLNV=AOQSUz-aABw@mail.gmail.com>
Subject: Re: [syzbot] WARNING in ext4_expand_extra_isize_ea
To:     syzbot <syzbot+4d99a966fd74bdeeec36@syzkaller.appspotmail.com>
Cc:     adilger.kernel@dilger.ca, bagasdotme@gmail.com,
        ebiggers@kernel.org, guohanjun@huawei.com, jack@suse.cz,
        johnny.chenyi@huawei.com, linux-ext4@vger.kernel.org,
        linux-kernel@vger.kernel.org, liuyongqiang13@huawei.com,
        miaoxie@huawei.com, patchwork@huawei.com,
        syzkaller-bugs@googlegroups.com, tytso@mit.edu,
        weiyongjun1@huawei.com, yanaijie@huawei.com, yebin10@huawei.com,
        yebin@huaweicloud.com, yuehaibing@huawei.com
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On Thu, Feb 2, 2023 at 1:10 PM syzbot
<syzbot+4d99a966fd74bdeeec36@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit cc12a6f25e07ed05d5825a1664b67a970842b2ca
> Author: Ye Bin <yebin10@huawei.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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