Re: [PATCH v2] nouveau/firmware: fix memory leak on BL load failure

["Danilo Krummrich" <dakr@kernel.org>]

(Cc: Timur)

On Wed Jun 10, 2026 at 4:50 AM CEST, Dawei Feng wrote:
> If loading the HS bootloader blob fails, nvkm_falcon_fw_ctor_hs() returns
> immediately. This skips the common cleanup path and leaks the firmware
> state allocated by nvkm_falcon_fw_ctor() and nvkm_falcon_fw_sign().
>
> Fix this by routing the load failure to the 'done' label so
> nvkm_falcon_fw_dtor() can properly clean up the partially initialized
> state. Keep the original image firmware in 'blob' until the common
> cleanup path, and use a separate 'blob_bl' pointer for the bootloader
> firmware so it can be released immediately after the bootloader data has
> been copied.
>
> The bug was first flagged by an experimental analysis tool we are
> developing for kernel memory-management bugs while analyzing
> v6.13-rc1. The tool is still under development and is not yet publicly
> available. Manual inspection confirms that the bug is still present in
> v7.1-rc6.
>
> An x86_64 allyesconfig build showed no new warnings. As we do not have a
> supported NVIDIA GPU with the required firmware to test this path, no
> runtime testing was able to be performed.
>
> Fixes: 2541626cfb79 ("drm/nouveau/acr: use common falcon HS FW code for ACR FWs")
> Cc: stable@vger.kernel.org
> Signed-off-by: Zilin Guan <zilin@seu.edu.cn>

Is Zilin a co-author of the patch?

> Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
> ---
> Changes in v2:
> - Use a separate bootloader firmware pointer instead of reusing 'blob'.
> - Keep the original image firmware release in the common cleanup path.

@Timur: Any further comments following up v1?