This is a note to let you know that I've just added the patch titled
drm/amdgpu: Fix size overflow
to the 5.11-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-size-overflow.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1b0b6e939f112949089e32ec89fd27796677263a Mon Sep 17 00:00:00 2001
From: xinhui pan <xinhui.pan@xxxxxxx>
Date: Wed, 7 Apr 2021 19:29:39 +0800
Subject: drm/amdgpu: Fix size overflow
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: xinhui pan <xinhui.pan@xxxxxxx>
commit 1b0b6e939f112949089e32ec89fd27796677263a upstream.
ttm->num_pages is uint32. Hit overflow when << PAGE_SHIFT directly
Fixes: 230c079fdcf4 ("drm/ttm: make num_pages uint32_t")
Signed-off-by: xinhui pan <xinhui.pan@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -907,7 +907,7 @@ static int amdgpu_ttm_tt_pin_userptr(str
/* Allocate an SG array and squash pages into it */
r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0,
- ttm->num_pages << PAGE_SHIFT,
+ (u64)ttm->num_pages << PAGE_SHIFT,
GFP_KERNEL);
if (r)
goto release_sg;
Patches currently in stable-queue which might be from xinhui.pan@xxxxxxx are
queue-5.11/drm-radeon-fix-size-overflow.patch
queue-5.11/drm-amdgpu-fix-size-overflow.patch
