[lvc-project] [PATCH net] octeontx2-af: Fix possible buffer overflow

[Jakub Kicinski]

On Sat, 25 Nov 2023 00:08:02 +0300 Elena Salomatkina wrote:
> A loop in rvu_mbox_handler_nix_bandprof_free() contains
> a break if (idx == MAX_BANDPROF_PER_PFFUNC),
> but if idx may reach MAX_BANDPROF_PER_PFFUNC
> buffer '(*req->prof_idx)[layer]' overflow happens before that check.
> 
> The patch moves the break to the
> beginning of the loop.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: e8e095b3b370 ("octeontx2-af: cn10k: Bandwidth profiles config support").
> Signed-off-by: Elena Salomatkina <elena.salomatkina.cmc at gmail.com>
> Reviewed-by: Simon Horman <horms at kernel.org>

Marvell folks, at least one of you has to review this. Please see:
https://docs.kernel.org/next/maintainer/feature-and-driver-maintainers.html