linux-kernel - Re: [PATCH v6.13 v2] fs/netfs/read_collect: fix crash due to uninitialized `prev` variable

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Message-ID: <a3ad0b7e8b5e16ee25cbc692798c0858e55a1b0c.camel@sipsolutions.net>
Date: Fri, 07 Mar 2025 15:27:41 +0100
From: Johannes Berg <johannes@...solutions.net>
To: Max Kellermann <max.kellermann@...os.com>, dhowells@...hat.com, 
	netfs@...ts.linux.dev, linux-kernel@...r.kernel.org, Greg Kroah-Hartman
	 <gregkh@...uxfoundation.org>
Cc: stable@...r.kernel.org
Subject: Re: [PATCH v6.13 v2] fs/netfs/read_collect: fix crash due to
 uninitialized `prev` variable

On Fri, 2025-02-14 at 14:12 +0100, Max Kellermann wrote:
> When checking whether the edges of adjacent subrequests touch, the
> `prev` variable is deferenced, but it might not have been initialized.
> This causes crashes like this one:

[...]

I believe we also need this in 6.12?

johannes