netdev - Re: [patch] qlge: pull NULL check ahead of dereference

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:	Thu, 19 Aug 2010 05:59:33 -0700
From:	Ron Mercer <ron.mercer@...gic.com>
To:	Dan Carpenter <error27@...il.com>,
	Linux Driver <Linux-Driver@...gic.com>,
	"David S. Miller" <davem@...emloft.net>,
	Breno Leitao <leitao@...ux.vnet.ibm.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: [patch] qlge: pull NULL check ahead of dereference

On Thu, Aug 19, 2010 at 05:19:42AM -0700, Ron Mercer wrote:
> On Thu, Aug 19, 2010 at 03:02:15AM -0700, Dan Carpenter wrote:
> > There was a dereference before NULL check issue introduced in 1e213303d
> > "qlge: Add tx multiqueue support."  I've pulled the NULL check of
> > "net_rsp" forward a couple lines to restore the original semantics.
> >
> 
> net_rsp is initialized to NULL and will never be NULL if entries are
> processed.  It should be fine as it is currently coded.
>

On second thought you are right but the early exit should be above the index
write.

	ql_write_cq_idx(rx_ring);

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html