linux-kernel - Re: [PATCH] HID: wacom: handle kzalloc() allocation failure in wacom_wac_queue

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Message-ID: <52f59232-78e4-46c5-b7c0-4719811ec8e8@web.de>
Date: Sat, 29 Mar 2025 12:03:16 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Qasim Ijaz <qasdev00@...il.com>, linux-input@...r.kernel.org
Cc: LKML <linux-kernel@...r.kernel.org>,
 Benjamin Tissoires <bentiss@...nel.org>,
 Jason Gerecke <jason.gerecke@...om.com>, Jiri Kosina <jikos@...nel.org>,
 Ping Cheng <ping.cheng@...om.com>
Subject: Re: [PATCH] HID: wacom: handle kzalloc() allocation failure in
 wacom_wac_queue_flush()

…
> from the fifo via kfifo_out(). However it does not
> check kzalloc() for allocation failure which returns
> NULL and could potentially lead to a NULL deref.
…
                                            pointer dereference?

I imagine that word wrapping can occasionally become a bit nicer
for text lines which may be longer than 52 characters.

Regards,
Markus