linux-kernel - Re: [PATCH 1/1] mm: fix xyz_noprof functions calling profiled functions

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Date: Fri, 31 May 2024 14:08:03 -0700
From: Kees Cook <kees@...nel.org>
To: Suren Baghdasaryan <surenb@...gle.com>
Cc: akpm@...ux-foundation.org, kent.overstreet@...ux.dev,
	pasha.tatashin@...een.com, vbabka@...e.cz, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mm: fix xyz_noprof functions calling profiled
 functions

On Fri, May 31, 2024 at 01:53:50PM -0700, Suren Baghdasaryan wrote:
> Grepping /proc/allocinfo for "noprof" reveals several xyz_noprof functions,
> which means internally they are calling profiled functions. This should
> never happen as such calls move allocation charge from a higher level
> location where it should be accounted for into these lower level helpers.
> Fix this by replacing profiled function calls with noprof ones.
> 
> Fixes: b951aaff5035 ("mm: enable page allocation tagging")
> Fixes: e26d8769da6d ("mempool: hook up to memory allocation profiling")
> Fixes: 88ae5fb755b0 ("mm: vmalloc: enable memory allocation profiling")
> Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>

Reviewed-by: Kees Cook <kees@...nel.org>

-- 
Kees Cook