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From: Karl Mehltretter <kmehltretter@gmail.com>
To: Lukasz Luba <lukasz.luba@arm.com>,
	 "Rafael J . Wysocki" <rafael@kernel.org>
Cc: Changwoo Min <changwoo@igalia.com>,
	linux-pm@vger.kernel.org,  linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH] PM: EM: allocate the cpumask for every perf domain
Date: Sat, 10 Oct 2026 12:58:47 +0200	[thread overview]
Message-ID: <asoaPjyhSAQ5r-lO@gmail.com> (raw)
In-Reply-To: <20260910205234.5392-1-kmehltretter@gmail.com>

On Thu, Sep 10, 2026 at 10:52:34PM +0100, Karl Mehltretter wrote:
> KASAN reports slab-out-of-bounds reads for both dump and by-ID requests
> against a synthetic non-CPU performance domain.
> 
> GET_PERF_DOMAINS does not require GENL_ADMIN_PERM, so an unprivileged
> request can reach this path when a GPU or another devfreq device has
> registered an energy model.
> 
> Allocate the cpumask for non-CPU domains too.  The zeroed mask remains
> empty, as required for the documented unused field.
> 
> Fixes: d8eef0453132 ("PM: EM: Implement em_nl_get_pds_doit()")
> Cc: stable@vger.kernel.org
> Assisted-by: LLM
> Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>

Friendly ping on this patch

Thanks,
Karl

  reply	other threads:[~2026-10-10 10:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-10 20:52 Karl Mehltretter
2026-10-10 10:58 ` Karl Mehltretter [this message]
2026-10-12  7:58 ` Lukasz Luba

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