From: "Gupta, Nipun" <nipun.gupta@amd.com>
To: Prasanna Kumar T S M <ptsm@linux.microsoft.com>,
nikhil.agarwal@amd.com, abhijit.gangurde@amd.com,
puneet.gupta@amd.com, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Subject: Re: [PATCH 2/2] cdx: Fix double free when sysfs file creation fails
Date: Wed, 1 Apr 2026 15:12:04 +0530 [thread overview]
Message-ID: <c67594eb-7e3a-9fda-858a-a9ffa4e3d190@amd.com> (raw)
In-Reply-To: <20260320102117.1554548-1-ptsm@linux.microsoft.com>
On 20-03-2026 15:51, Prasanna Kumar T S M wrote:
> In cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code
> frees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This
> leaves a dangling pointer in the array. Then cdx_destroy_res_attr()
> frees the already-freed memory. Fix the double free by initializing
> cdx_dev->res_attr[num] after sysfs_create_bin_file() completes.
>
> Fixes: aeda33ab8160 ("cdx: create sysfs bin files for cdx resources")
> Cc: stable@vger.kernel.org
> Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Acked-by: Nipun Gupta <nipun.gupta@amd.com>
next prev parent reply other threads:[~2026-04-01 9:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-20 10:19 [PATCH 1/2] vfio/cdx: Fix NULL pointer dereference in interrupt trigger path Prasanna Kumar T S M
2026-03-20 10:21 ` [PATCH 2/2] cdx: Fix double free when sysfs file creation fails Prasanna Kumar T S M
2026-04-01 9:42 ` Gupta, Nipun [this message]
2026-04-01 9:41 ` [PATCH 1/2] vfio/cdx: Fix NULL pointer dereference in interrupt trigger path Gupta, Nipun
2026-04-01 18:22 ` Alex Williamson
2026-04-02 4:44 ` Prasanna Kumar T S M
2026-04-02 14:16 ` Alex Williamson
2026-04-06 4:18 ` Prasanna Kumar T S M
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