[settings] Use list_first_entry() when unregistering child settings
Unregistering a child settings block can have almost arbitrary effects, due to the call to apply_settings(). Avoid potentially dereferencing a stale pointer by using list_first_entry() rather than list_for_each_entry_safe() to iterate over the list of child settings. Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
parent
e399fc0d21
commit
0af3d14a23
@ -499,10 +499,10 @@ int register_settings ( struct settings *settings, struct settings *parent,
|
||||
*/
|
||||
void unregister_settings ( struct settings *settings ) {
|
||||
struct settings *child;
|
||||
struct settings *tmp;
|
||||
|
||||
/* Unregister child settings */
|
||||
list_for_each_entry_safe ( child, tmp, &settings->children, siblings ) {
|
||||
while ( ( child = list_first_entry ( &settings->children,
|
||||
struct settings, siblings ) ) ) {
|
||||
unregister_settings ( child );
|
||||
}
|
||||
|
||||
|
Reference in New Issue
Block a user