From: David Sterba <dsterba@suse.cz>
To: Kees Cook <kees@kernel.org>
Cc: Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] btrfs: compression: Adjust cb->compressed_folios allocation type
Date: Mon, 28 Apr 2025 17:02:41 +0200 [thread overview]
Message-ID: <20250428150241.GC7139@twin.jikos.cz> (raw)
In-Reply-To: <20250426062328.work.065-kees@kernel.org>
On Fri, Apr 25, 2025 at 11:23:29PM -0700, Kees Cook wrote:
> In preparation for making the kmalloc family of allocators type aware,
> we need to make sure that the returned type from the allocation matches
> the type of the variable being assigned. (Before, the allocator would
> always return "void *", which can be implicitly cast to any pointer type.)
>
> The assigned type is "struct folio **" but the returned type will be
> "struct page **". These are the same allocation size (pointer size), but
> the types don't match. Adjust the allocation type to match the assignment.
>
> Signed-off-by: Kees Cook <kees@kernel.org>
Added to for-next, thanks.
prev parent reply other threads:[~2025-04-28 15:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-26 6:23 [PATCH] btrfs: compression: Adjust cb->compressed_folios allocation type Kees Cook
2025-04-26 6:28 ` Qu Wenruo
2025-04-26 6:55 ` Gustavo A. R. Silva
2025-04-30 19:02 ` Kees Cook
2025-04-28 15:02 ` David Sterba [this message]
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