linux-kernel - Re: [PATCH v2] erofs: fix general protection fault when reading fragment

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Message-ID: <dd8c717a-28d7-f155-d5ee-24e8f28c4329@kernel.org>
Date:   Tue, 8 Nov 2022 11:06:24 +0800
From:   Chao Yu <chao@...nel.org>
To:     Yue Hu <zbestahu@...il.com>, xiang@...nel.org
Cc:     linux-erofs@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        syzbot+3faecbfd845a895c04cb@...kaller.appspotmail.com,
        syzkaller-bugs@...glegroups.com, zhangwen@...lpad.com,
        Yue Hu <huyue2@...lpad.com>
Subject: Re: [PATCH v2] erofs: fix general protection fault when reading
 fragment

On 2022/10/21 16:53, Yue Hu wrote:
> From: Yue Hu <huyue2@...lpad.com>
> 
> As syzbot reported [1], the fragment feature sb flag is not set, so
> packed_inode != NULL needs to be checked in z_erofs_read_fragment().
> 
> [1] https://lore.kernel.org/all/0000000000002e7a8905eb841ddd@google.com/
> 
> Reported-by: syzbot+3faecbfd845a895c04cb@...kaller.appspotmail.com
> Fixes: 08a0c9ef3e7e ("erofs: support on-disk compressed fragments data")
> Signed-off-by: Yue Hu <huyue2@...lpad.com>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,