param: fix uninitialized read with CONFIG_DEBUG_LOCK_ALLOC



ignore_lockdep is uninitialized, and sysfs_attr_init() doesn't initialize
it, so memset to 0.

Reported-by: Huang Ying <ying.huang@intel.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent 574732c7

kernel/params.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -642,6 +642,7 @@ static __modinit int add_sysfs_param(struct module_kobject *mk,
		mk->mp->grp.attrs = new_attrs;

		/* Tack new one on the end. */
		memset(&mk->mp->attrs[mk->mp->num], 0, sizeof(mk->mp->attrs[0]));
		sysfs_attr_init(&mk->mp->attrs[mk->mp->num].mattr.attr);
		mk->mp->attrs[mk->mp->num].param = kp;
		mk->mp->attrs[mk->mp->num].mattr.show = param_attr_show;