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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: George Dunlap <george.dunlap@citrix.com>, xen-devel@lists.xen.org
Cc: Ian Jackson <ian.jackson@citrix.com>, Wei Liu <wei.liu2@citrix.com>
Subject: Re: [PATCH 1/1] libxl: Fix uninitialized pointer when passing an empty cdrom
Date: Wed, 6 Apr 2016 13:10:37 +0100	[thread overview]
Message-ID: <5704FCBD.1010300@citrix.com> (raw)
In-Reply-To: <1459942446-25008-1-git-send-email-george.dunlap@citrix.com>

On 06/04/16 12:34, George Dunlap wrote:
> Commit 3fec17d4bb56567d139d7806392f4d8702d3f6a7 introduced a bug where
> an empty cdrom would cause target_path to be uninitialized.  Initialize
> target_path to NULL instead.
>
> The other option here would have been to set target_path to NULL only
> on the LIBXL_DISK_FORMAT_EMPTY path.  That would potentially enable
> the compiler to catch future uninitialized paths, rather than having
> those paths (potentially) dereference a NULL pointer.  But given that
> a bunch of our compilers failed to catch *this* uninitialized path,
> setting it to NULL at declaration seems the safer option for now.
>
> Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
> Signed-off-by: George Dunlap <george.dunlap@citrix.com>

This looks like it will work.  Reviewed-by: Andrew Cooper
<andrew.cooper3@citrix.com>

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  reply	other threads:[~2016-04-06 12:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-06 11:34 George Dunlap
2016-04-06 12:10 ` Andrew Cooper [this message]
2016-04-06 13:47   ` Ian Jackson

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