From: Catalin Marinas <catalin.marinas@arm.com>
To: Waiman Long <longman@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] mm/kmemleak: Disable KASAN instrumentation in kmemleak
Date: Tue, 26 Mar 2024 17:34:55 +0000 [thread overview]
Message-ID: <ZgMHP5oVpNRvImq-@arm.com> (raw)
In-Reply-To: <20240307190548.963626-3-longman@redhat.com>
On Thu, Mar 07, 2024 at 02:05:48PM -0500, Waiman Long wrote:
> Kmemleak ia a memory leak checker. KASAN is also a memory checker but
> it focuses more on finding out-of-bounds and use-after-free bugs. Since
> kmemleak is inherently slow especially on systems with large number of
> CPUs, adding KASAN instrumentation will make it slower even more. As
> kmemleak is not for production use, the utility of enabling KASAN there
> is questionable.
>
> This patch disables KASAN instrumentation for configurations that
> enable both of them to slightly reduce performance overhead.
>
> Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
prev parent reply other threads:[~2024-03-26 17:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-07 19:05 [PATCH 0/2] mm/kmemleak: Minor cleanup & performance tuning Waiman Long
2024-03-07 19:05 ` [PATCH 1/2] mm/kmemleak: Compact kmemleak_object further Waiman Long
2024-03-26 17:33 ` Catalin Marinas
2024-03-07 19:05 ` [PATCH 2/2] mm/kmemleak: Disable KASAN instrumentation in kmemleak Waiman Long
2024-03-26 17:34 ` Catalin Marinas [this message]
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