[PATCH 4.16 085/272] platform/x86: dell-smbios: Fix memory leaks in build_tokens_sysfs()

Greg Kroah-Hartman
2018-05-28T11:53:26Z

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 0e5b09b165510e2ea5c526e962c4edadd849ef4c ]

We're freeing "value_name" which is NULL, so that's a no-op, but we
intended to free "location_name" instead. And then we don't free the
names in token_location_attrs[0] and token_value_attrs[0].

Fixes: 33b9ca1e53b4 ("platform/x86: dell-smbios: Add a sysfs interface for SMBIOS tokens")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/platform/x86/dell-smbios-base.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/platform/x86/dell-smbios-base.c
+++ b/drivers/platform/x86/dell-smbios-base.c
@@ -514,7 +514,7 @@ static int build_tokens_sysfs(struct pla
continue;

loop_fail_create_value:
- kfree(value_name);
+ kfree(location_name);
goto out_unwind_strings;
}
smbios_attribute_group.attrs = token_attrs;
@@ -525,7 +525,7 @@ loop_fail_create_value:
return 0;

out_unwind_strings:
- for (i = i-1; i > 0; i--) {
+ while (i--) {
kfree(token_location_attrs[i].attr.name);
kfree(token_value_attrs[i].attr.name);
}