linux-kernel - Re: [PATCH v2] coresight: trbe: Return NULL pointer for allocation failures

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: <b8dd23cd-9e95-4e2c-8388-54b6d184bcf2@web.de>
Date: Thu, 4 Sep 2025 18:10:45 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Leo Yan <leo.yan@....com>, coresight@...ts.linaro.org,
 linux-arm-kernel@...ts.infradead.org
Cc: LKML <linux-kernel@...r.kernel.org>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Anshuman Khandual <anshuman.khandual@....com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>,
 Suzuki Poulouse <suzuki.poulose@....com>,
 Tamas Zsoldos <tamas.zsoldos@....com>
Subject: Re: [PATCH v2] coresight: trbe: Return NULL pointer for allocation
 failures

…
> Fix this by returning a NULL pointer from arm_trbe_alloc_buffer() on
> allocation failures. This allows that the callers can properly handle
> the failure.

See also:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.17-rc4#n94


By the way:
* Would you like to improve the exception handling by using a goto chain?

* How do you think about to increase the application of scope-based resource management?
  https://elixir.bootlin.com/linux/v6.17-rc4/source/include/linux/slab.h#L476


Regards,
Markus