linux-kernel - Re: [PATCH] iSeries: Don't leak if allocations fail in mf

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]

Date:	Mon, 01 Nov 2010 22:10:42 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linuxppc-dev@...ts.ozlabs.org, Paul Mackerras <paulus@...ba.org>,
	linux-kernel@...r.kernel.org, Stephen Rothwell <sfr@...g.org.au>
Subject: Re: [PATCH] iSeries: Don't leak if allocations fail in
 mf_getSrcHistory

On Sat, 2010-10-30 at 19:20 +0200, Jesper Juhl wrote:
> Hi,
> 
> If memory is tight and a dynamic allocation fails there's no reason to 
> make a bad situation worse by leaking memory.
> 
> mf_getSrcHistory potentially leaks pages[0-3]. I believe the right thing 
> to do is to free that memory again before returning -ENOMEM - which is 
> what this patch does.
> 
> I realize that the function is under '#if 0' so this probably doesn't 
> matter much, but I assume that the function is still there for a reason 
> (but I could be wrong, I don't know the powerpc code).
> Anyway, I suggest we remove the leak.

Stephen is the iSeries maintainer, and I think he #if 0'ed the code. But
I don't think it will ever be un-ifdef'ed, so should probably just be
removed.

cheers


Download attachment "signature.asc" of type "application/pgp-signature" (199 bytes)