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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
	Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] percpu: add basic double free check
Message-ID: <20260112160321.kCh3NHWV@linutronix.de>
References: <20251220002737.84100-1-dennis@kernel.org>
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In-Reply-To: <20251220002737.84100-1-dennis@kernel.org>

On 2025-12-19 16:27:37 [-0800], Dennis Zhou wrote:
> This adds a basic double free check by validating the first bit of the
> allocation in alloc_map and bound_map are set. If the alloc_map bit is
> not set, then this means the area is currently unallocated. If the
> bound_map bit is not set, then we are not freeing from the beginning of
> the allocation.
> 
> This is a respin of [1] adding the requested changes from me and
> Christoph.

Thank you.

> [1] https://lore.kernel.org/linux-mm/20250904143514.Yk6Ap-jy@linutronix.de/
> 

Sebastian