[PATCH 2/2] afs: Increase buffer size in afs_update_volume_status()

[Matthew Wilcox]

On Mon, Feb 19, 2024 at 02:39:03PM +0000, David Howells wrote:
> From: Daniil Dulov <d.dulov at aladdin.ru>
> 
> The max length of volume->vid value is 20 characters.
> So increase idbuf[] size up to 24 to avoid overflow.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> [DH: Actually, it's 20 + NUL, so increase it to 24 and use snprintf()]
> 
> Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation")
> Signed-off-by: Daniil Dulov <d.dulov at aladdin.ru>
> Signed-off-by: David Howells <dhowells at redhat.com>
> Link: https://lore.kernel.org/r/20240211150442.3416-1-d.dulov@aladdin.ru/ # v1
> Link: https://lore.kernel.org/r/20240212083347.10742-1-d.dulov@aladdin.ru/ # v2

Tag it for stable?