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thunderbolt: property: Fix a missing check of kzalloc

Browse source 
No check is enforced for the return value of kzalloc,
which may lead to NULL-pointer dereference.

The patch fixes this issue.

Signed-off-by: Kangjie Lu <[email protected]>
Reviewed-by: Mukesh Ojha <[email protected]>
Signed-off-by: Mika Westerberg <[email protected]>
This commit is contained in:
Kangjie Lu 2019-03-25 15:23:08 -05:00 • committed by Mika Westerberg
commit 6183d5a518
1 changed files with 6 additions and 1 deletions
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7
drivers/thunderbolt/property.c
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@ -587,7 +587,12 @@ int tb_property_add_text(struct tb_property_dir *parent, const char *key,
return -ENOMEM;
property->length = size / 4;
property->value.data = kzalloc(size, GFP_KERNEL);
property->value.text = kzalloc(size, GFP_KERNEL);
if (!property->value.text) {
kfree(property);
return -ENOMEM;
}
strcpy(property->value.text, text);
list_add_tail(&property->list, &parent->properties);