linux-kernel - Re: [PATCH] netfs: Fix a KMSAN uninit-value error in netfs_clear

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Message-ID: <743844.1727075543@warthog.procyon.org.uk>
Date: Mon, 23 Sep 2024 08:12:23 +0100
From: David Howells <dhowells@...hat.com>
To: Chang Yu <marcus.yu.56@...il.com>
Cc: dhowells@...hat.com, jlayton@...nel.org, netfs@...ts.linux.dev,
    linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
    skhan@...uxfoundation.org
Subject: Re: [PATCH] netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer

Chang Yu <marcus.yu.56@...il.com> wrote:

> Use kzalloc instead of kmalloc in netfs_buffer_append_folio to fix
> a KMSAN uninit-value error in netfs_clear_buffer

Btw, is this a theoretical error or are you actually seeing an uninitialised
pointer being dereferenced?

David