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Date:   Fri, 28 Apr 2023 14:08:22 +0800
From:   Jason Yan <>
To:     Theodore Ts'o <>,
        Ext4 Developers List <>
CC:     Andreas Dilger <>
Subject: Re: [PATCH 3/3] ext4: clean up error handling in __ext4_fill_super()

On 2023/4/28 11:16, Theodore Ts'o wrote:
> There were two ways to return an error code; one was via setting the
> 'err' variable, and the second, if err was zero, was via the 'ret'
> variable.  This was both confusing and fragile, and when code was
> factored out of __ext4_fill_super(), some of the error codes returned
> by the original code was replaced by -EINVAL, and in one case, the
> error code was placed by 0, triggering a kernel null pointer
> dereference.
> Clean this up by removing the 'ret' variable, leaving only one way to
> setfthe error code to be returned, and restore the errno codes that

setfthe -> set the? Otherwise looks good to me:

Reviewed-by: Jason Yan <>

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