linux-kernel - Re: [PATCH 1/10] arch/powerpc/sysdev/qe

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] [day] [month] [year] [list]

Date:	Thu, 6 Aug 2009 21:26:23 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Julia Lawall <julia@...u.dk>
Cc:	timur@...escale.com, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/10] arch/powerpc/sysdev/qe_lib: introduce missing kfree


On Aug 1, 2009, at 3:52 AM, Julia Lawall wrote:

> From: Julia Lawall <julia@...u.dk>
>
> Error handling code following a kzalloc should free the allocated  
> data.
>
> The semantic match that finds the problem is as follows:
> (http://www.emn.fr/x-info/coccinelle/)
>
> // <smpl>
> @r exists@
> local idexpression x;
> statement S;
> expression E;
> identifier f,f1,l;
> position p1,p2;
> expression *ptr != NULL;
> @@
>
> x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
> ...
> if (x == NULL) S
> <... when != x
>     when != if (...) { <+...x...+> }
> (
> x->f1 = E
> |
> (x->f1 == NULL || ...)
> |
> f(...,x->f1,...)
> )
> ...>
> (
> return \(0\|<+...x...+>\|ptr\);
> |
> return@p2 ...;
> )
>
> @script:python@
> p1 << r.p1;
> p2 << r.p2;
> @@
>
> print "* file: %s kmalloc %s return %s" %  
> (p1[0].file,p1[0].line,p2[0].line)
> // </smpl>
>
> Signed-off-by: Julia Lawall <julia@...u.dk>
> ---
> arch/powerpc/sysdev/qe_lib/qe_ic.c  |    5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)

applied to next

- k
--
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/