diff options
| author | Tom Rix <trix@redhat.com> | 2022-02-27 18:33:42 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-03 02:40:05 +0300 |
| commit | ca6fcfa8d4461c889636ef5dd51bdec96c6122bd (patch) | |
| tree | 901d84db449ba9091a5085212ee8be2106f1f5df /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | 4affb123033851381dcff4887982f6c7bad938af (diff) | |
| download | linux-ca6fcfa8d4461c889636ef5dd51bdec96c6122bd.tar.xz | |
drm/amdgpu: Fix realloc of ptr
Clang static analysis reports this error
amdgpu_debugfs.c:1690:9: warning: 1st function call
argument is an uninitialized value
tmp = krealloc_array(tmp, i + 1,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
realloc uses tmp, so tmp can not be garbage.
And the return needs to be checked.
Fixes: 5ce5a584cb82 ("drm/amdgpu: add debugfs for reset registers list")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index 426b63e4f1f6..4549bfb0ee0c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -1678,7 +1678,7 @@ 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 *tmp; + uint32_t *new, *tmp = NULL; int ret, i = 0, len = 0; do { @@ -1689,7 +1689,12 @@ static ssize_t amdgpu_reset_dump_register_list_write(struct file *f, goto error_free; } - tmp = krealloc_array(tmp, i + 1, sizeof(uint32_t), GFP_KERNEL); + new = krealloc_array(tmp, i + 1, sizeof(uint32_t), GFP_KERNEL); + if (!new) { + ret = -ENOMEM; + goto error_free; + } + tmp = new; if (sscanf(reg_offset, "%X %n", &tmp[i], &ret) != 1) { ret = -EINVAL; goto error_free; |