linux-kernel - Re: [PATCH] block: Check blkg_to_lat() return value to avoid NULL dereference

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Message-ID: <612ab8e6-a712-41f7-ae7f-7bdc0e3c1b90@web.de>
Date: Wed, 12 Feb 2025 14:02:58 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Wentao Liang <vulab@...as.ac.cn>, cgroups@...r.kernel.org,
 linux-block@...r.kernel.org
Cc: stable@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
 Jens Axboe <axboe@...nel.dk>, Josef Bacik <josef@...icpanda.com>,
 Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH] block: Check blkg_to_lat() return value to avoid NULL
 dereference

…
> This patch adds checks for the return values of blkg_to_lat and let it

See also:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.14-rc2#n94


> returns early if it is NULL, preventing the NULL pointer dereference.

  return?


Regards,
Markus