From: Dave Airlie airlied@redhat.com

stable inclusion from stable-v5.10.215 commit fcbd99b3c73309107e3be71f20dff9414df64f91 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9J6AL CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=l...

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commit 3b0daecfeac0103aba8b293df07a0cbaf8b43f29 upstream.

This uses calloc instead of doing the multiplication which might overflow.

Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie airlied@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Baogen Shang baogen.shang@windriver.com --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 8cc51cec988a..799a91a064a1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -959,8 +959,8 @@ static int kfd_ioctl_get_process_apertures_new(struct file *filp, * 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;