This is a note to let you know that I've just added the patch titled drm/amd/amdgpu: Increase HWIP_MAX_INSTANCE to 10 to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amd-amdgpu-increase-hwip_max_instance-to-10.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 67a44e659888569a133a8f858c8230e9d7aad1d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ernst=20Sj=C3=B6strand?= <ernstp@xxxxxxxxx> Date: Thu, 2 Sep 2021 09:50:27 +0200 Subject: drm/amd/amdgpu: Increase HWIP_MAX_INSTANCE to 10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Ernst Sjöstrand <ernstp@xxxxxxxxx> commit 67a44e659888569a133a8f858c8230e9d7aad1d5 upstream. Seems like newer cards can have even more instances now. Found by UBSAN: array-index-out-of-bounds in drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c:318:29 index 8 is out of range for type 'uint32_t *[8]' Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1697 Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Ernst Sjöstrand <ernstp@xxxxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -762,7 +762,7 @@ enum amd_hw_ip_block_type { MAX_HWIP }; -#define HWIP_MAX_INSTANCE 8 +#define HWIP_MAX_INSTANCE 10 struct amd_powerplay { void *pp_handle; Patches currently in stable-queue which might be from ernstp@xxxxxxxxx are queue-5.4/drm-amd-amdgpu-increase-hwip_max_instance-to-10.patch