This is a note to let you know that I've just added the patch titled
amdkfd: use calloc instead of kzalloc to avoid integer overflow
to the 4.19-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:
amdkfd-use-calloc-instead-of-kzalloc-to-avoid-integer-overflow.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3b0daecfeac0103aba8b293df07a0cbaf8b43f29 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@xxxxxxxxxx>
Date: Fri, 12 Apr 2024 06:11:25 +1000
Subject: amdkfd: use calloc instead of kzalloc to avoid integer overflow
From: Dave Airlie <airlied@xxxxxxxxxx>
commit 3b0daecfeac0103aba8b293df07a0cbaf8b43f29 upstream.
This uses calloc instead of doing the multiplication which might
overflow.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -923,8 +923,8 @@ static int kfd_ioctl_get_process_apertur
* nodes, but not more than args->num_of_nodes as that is
* the amount of memory allocated by user
*/
- pa = kzalloc((sizeof(struct kfd_process_device_apertures) *
- args->num_of_nodes), GFP_KERNEL);
+ pa = kcalloc(args->num_of_nodes, sizeof(struct kfd_process_device_apertures),
+ GFP_KERNEL);
if (!pa)
return -ENOMEM;
Patches currently in stable-queue which might be from airlied@xxxxxxxxxx are
queue-4.19/amdkfd-use-calloc-instead-of-kzalloc-to-avoid-integer-overflow.patch
