GNU bug report logs - #79336
[PATCH] df: fix potential null pointer dereference

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Package: coreutils;

Reported by: yubiao hu <huyubiaox <at> gmail.com>

Date: Fri, 29 Aug 2025 01:47:02 UTC

Severity: normal

Tags: patch

Done: Pádraig Brady <P <at> draigBrady.com>

Full log


Message #28 received at 79336 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: yubiao hu <huyubiaox <at> gmail.com>
Cc: 79336 <at> debbugs.gnu.org
Subject: Re: bug#79336: [PATCH] df: fix potential null pointer dereference
Date: Sun, 31 Aug 2025 19:28:23 -0700
On 8/31/25 18:58, yubiao hu wrote:
> Yes, this bug was identified via static code analysis. The initial
> finding that core dump would occur in `cell = xstrdup (mount_point);`
> when mount_point is NULL.

It appears that the static analysis is reporting a false positive. Which 
static analyzer are you using? Or are you doing this by hand?

Do you get a false positive if you install the patch I sent you earlier? 
You can find that patch again here:

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=79336#8





This bug report was last modified 9 days ago.

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