Commit d4fddac5 authored by Wenwen Wang's avatar Wenwen Wang Committed by Greg Kroah-Hartman
Browse files

test_firmware: fix a memory leak bug



In test_firmware_init(), the buffer pointed to by the global pointer
'test_fw_config' is allocated through kzalloc(). Then, the buffer is
initialized in __test_firmware_config_init(). In the case that the
initialization fails, the following execution in test_firmware_init() needs
to be terminated with an error code returned to indicate this failure.
However, the allocated buffer is not freed on this execution path, leading
to a memory leak bug.

To fix the above issue, free the allocated buffer before returning from
test_firmware_init().

Signed-off-by: default avatarWenwen Wang <wenwen@cs.uga.edu>
Link: https://lore.kernel.org/r/1563084696-6865-1-git-send-email-wang6495@umn.edu


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0c7d37f4
......@@ -886,8 +886,11 @@ static int __init test_firmware_init(void)
return -ENOMEM;
rc = __test_firmware_config_init();
if (rc)
if (rc) {
kfree(test_fw_config);
pr_err("could not init firmware test config: %d\n", rc);
return rc;
}
rc = misc_register(&test_fw_misc_device);
if (rc) {
......
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