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Patch "drm/amdgpu: fix overflow on 32bit systems" has been added to the 4.2-stable tree

PATCH [email protected] 1 participant 1 message Oct 17, 2015

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This is a note to let you know that I've just added the patch titled

drm/amdgpu: fix overflow on 32bit systems

to the 4.2-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-amdgpu-fix-overflow-on-32bit-systems.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From b7d698d7fd7d132c6ebe56d230584f2cae6c94ee Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Christian=20K=C3=B6nig?= <[email protected]>
Date: Mon, 7 Sep 2015 12:32:09 +0200
Subject: drm/amdgpu: fix overflow on 32bit systems
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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From: =?UTF-8?q?Christian=20K=C3=B6nig?= <[email protected]>

commit b7d698d7fd7d132c6ebe56d230584f2cae6c94ee upstream.

mem->start is a long, so this can overflow on 32bit systems.

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +1 -1
@@ -787,7 +787,7 @@ int amdgpu_vm_bo_update(struct amdgpu_de
 	int r;
 
 	if (mem) {
-		addr = mem->start << PAGE_SHIFT;
+		addr = (u64)mem->start << PAGE_SHIFT;
 		if (mem->mem_type != TTM_PL_TT)
 			addr += adev->vm_manager.vram_base_offset;
 	} else {

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/drm-amdgpu-fix-overflow-on-32bit-systems.patch queue-4.2/drm-amdgpu-fix-the-uvd-suspend-sequence-order.patch queue-4.2/drm-amdgpu-disable-uvd-pg.patch queue-4.2/drm-amdgpu-fix-max_vblank_count-value-for-current-display-engines.patch queue-4.2/drm-amdgpu-make-uvd-handle-checking-more-strict.patch