linux-kernel - Re: [PATCH][V3] scsi: cxgbi: remove redundant __kfree

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:   Fri, 12 Apr 2019 20:06:01 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Karen Xie <kxie@...lsio.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][V3] scsi: cxgbi: remove redundant __kfree_skb call on skb and free cst->atid


Colin,

> The error return path via label rel_resource checks for a non-null skb
> before free'ing it.  However, skb is always null at this exit path, so
> the null check and the free are redundant and can be removed.
> Removing this allows the original goto's to rel_resource to be cleaned
> up; the first can be replaced by a return of -EINVAL, the second can
> be replaced by a more appropriate -ENOMEM return and fix a memory leak
> by freeing csk->atid.

Applied to 5.2/scsi-queue, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering