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drm/amdgpu: fix the warning about the expression (int)size - len

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[ Upstream commit ea686fef5489ef7a2450a9fdbcc732b837fb46a8 ]

Converting size from size_t to int may overflow.
v2: keep reverse xmas tree order (Christian)

Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jesse Zhang 2024-04-25 15:16:40 +08:00 committed by Greg Kroah-Hartman
parent 7e0fbceae1
commit 3fac5aecb5
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
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@ -2052,12 +2052,13 @@ static ssize_t amdgpu_reset_dump_register_list_write(struct file *f,
struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
char reg_offset[11];
uint32_t *new = NULL, *tmp = NULL;
int ret, i = 0, len = 0;
unsigned int len = 0;
int ret, i = 0;
do {
memset(reg_offset, 0, 11);
if (copy_from_user(reg_offset, buf + len,
min(10, ((int)size-len)))) {
min(10, (size-len)))) {
ret = -EFAULT;
goto error_free;
}