D48499.diff
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	diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c
	--- a/sys/kern/kern_ktrace.c
	+++ b/sys/kern/kern_ktrace.c
	@@ -973,9 +973,16 @@
	case CAPFAIL_PROTO:
	kcd->cap_int = (const int )data;
	break;
	- case CAPFAIL_SOCKADDR:
	- kcd->cap_sockaddr = (const struct sockaddr )data;
	+ case CAPFAIL_SOCKADDR: {
	+ size_t len;
	+
	+ len = MIN(((const struct sockaddr *)data)->sa_len,
	+ sizeof(kcd->cap_sockaddr));
	+ memset(&kcd->cap_sockaddr, 0,
	+ sizeof(kcd->cap_sockaddr));
	+ memcpy(&kcd->cap_sockaddr, data, len);
	break;
	+ }
	case CAPFAIL_NAMEI:
	strlcpy(kcd->cap_path, data, MAXPATHLEN);
	break;