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

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

[gregkh]

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 <stable@vger.kernel.org> know about it.


>From b7d698d7fd7d132c6ebe56d230584f2cae6c94ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 7 Sep 2015 12:32:09 +0200
Subject: drm/amdgpu: fix overflow on 32bit systems
MIME-Version: 1.0
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From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>

commit b7d698d7fd7d132c6ebe56d230584f2cae6c94ee upstream.

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

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -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 christian.koenig@amd.com 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