From 130c7ed88f62f72bd99db69e634a5f0ac10a2362 Mon Sep 17 00:00:00 2001 From: Yunshui Jiang Date: Thu, 24 Jul 2025 09:37:53 +0800 Subject: [PATCH 4590/5403] drm/amdgpu: use kmalloc_array() instead of kmalloc() Use kmalloc_array() instead of kmalloc() with multiplication. kmalloc_array() is a safer way because of its multiply overflow check. Signed-off-by: Yunshui Jiang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index a2af7c835962..e6b8c2cf80ea 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -2622,7 +2622,7 @@ static int amdgpu_ras_badpages_read(struct amdgpu_device *adev, goto out; } - *bps = kmalloc(sizeof(struct ras_badpage) * data->count, GFP_KERNEL); + *bps = kmalloc_array(data->count, sizeof(struct ras_badpage), GFP_KERNEL); if (!*bps) { ret = -ENOMEM; goto out; @@ -2786,7 +2786,7 @@ static int amdgpu_ras_realloc_eh_data_space(struct amdgpu_device *adev, unsigned int old_space = data->count + data->space_left; unsigned int new_space = old_space + pages; unsigned int align_space = ALIGN(new_space, 512); - void *bps = kmalloc(align_space * sizeof(*data->bps), GFP_KERNEL); + void *bps = kmalloc_array(align_space, sizeof(*data->bps), GFP_KERNEL); if (!bps) { return -ENOMEM; -- 2.54.0