linux-kernel - Re: [PATCH v2] ext4: fix kernel BUG in 'ext4_write_inline_data

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Message-ID: <63904686.3010903@huawei.com>
Date:   Wed, 7 Dec 2022 15:53:42 +0800
From:   "yebin (H)" <yebin10@...wei.com>
To:     Jun Nie <jun.nie@...aro.org>, Ye Bin <yebin@...weicloud.com>
CC:     <tytso@....edu>, <adilger.kernel@...ger.ca>,
        <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jack@...e.cz>,
        <syzbot+4faa160fa96bfba639f8@...kaller.appspotmail.com>
Subject: Re: [PATCH v2] ext4: fix kernel BUG in 'ext4_write_inline_data_end()'



On 2022/12/7 14:44, Jun Nie wrote:
> Hi Bin,
>
> Thanks for the patch! The bug is reproduced with this patch. I can
> help trigger another
> test when you have new patch.
> https://syzkaller.appspot.com/text?tag=CrashLog&x=16760797880000

The cause of this issue is different from that of the previous issue.
I analyze that the issue 
"https://syzkaller.appspot.com/text?tag=CrashLog&x=16760797880000 "
is caused by the concurrency of  inline data conversion and buffer 
write. To be honest, I haven't
thought of any good solution.

>
> Regards,
> Jun
> .