linux-kernel - Re: [PATCH] Stop docproc segfaulting when SRCTREE isn't set.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20071009085500.e7be49a0.randy.dunlap@oracle.com>
Date:	Tue, 9 Oct 2007 08:55:00 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Ahmed S. Darwish" <darwish.07@...il.com>
Cc:	Rob Landley <rob@...dley.net>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, rdunlap@...otime.net
Subject: Re: [PATCH] Stop docproc segfaulting when SRCTREE isn't set.

On Tue, 9 Oct 2007 15:03:15 +0200 Ahmed S. Darwish wrote:

> Hi Rob,
> 
> On Tue, Oct 09, 2007 at 01:25:18AM -0500, Rob Landley wrote:
> [...]
> >  	FILE * infile;
> > +
> > +	srctree = getenv("SRCTREE");
> > +	if (!srctree) srctree = getcwd(NULL,0);
> >  	if (argc != 3) {
> >  		usage();
> >  		exit(1);
> 
> $ man getcwd
> 
>  char *getcwd(char *buf, size_t size);
>       
>  As an extension to the POSIX.1 standard, Linux (libc4, libc5, glibc) getcwd() 
>  allocates the buffer dynamically using malloc() if buf is NULL on call.
> 
> Shouldn't "srctree" be free()ed in case getenv("SRCTREE") failed ?

What is there to free() at that point?  If getenv() fails (i.e.,
the env. variable is not found), it returns NULL.
or do I need another cup of coffee?

---
~Randy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/