linux-kernel - Re: [PATCH 1/4] ARM: brcmstb: fix a leaked reference by adding missing of_node

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: <140acf36-21df-bdc3-5ad2-b934e521554b@gmail.com>
Date:   Tue, 5 Mar 2019 19:14:18 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Wen Yang <wen.yang99@....com.cn>, linux-kernel@...r.kernel.org
Cc:     wang.yi59@....com.cn, Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Russell King <linux@...linux.org.uk>,
        Brian Norris <computersforpeace@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/4] ARM: brcmstb: fix a leaked reference by adding
 missing of_node_put



On 3/5/2019 3:32 AM, Wen Yang wrote:
> The call to of_get_next_child returns a node pointer with refcount
> incremented thus it must be explicitly decremented after the last
> usage.
> 
> Detected by coccinelle with the following warnings:
> ./arch/arm/mach-bcm/platsmp-brcmstb.c:337:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 329, but without a corresponding object release within this function.
> ./arch/arm/mach-bcm/platsmp-brcmstb.c:341:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 329, but without a corresponding object release within this functio
> ./arch/arm/mach-bcm/bcm63xx_smp.c:150:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function.


I would actually lump that in your [PATCH v2 02/15] ARM: bcm: fix a
leaked reference by adding missing of_node_put patch since the subject
of that one is correct.

Thanks!
-- 
Florian