diff --git a/app/nginx-1.16.1/src/event/modules/ngx_ff_module.c b/app/nginx-1.16.1/src/event/modules/ngx_ff_module.c
index c74afff68..4ddd79e95 100644
--- a/app/nginx-1.16.1/src/event/modules/ngx_ff_module.c
+++ b/app/nginx-1.16.1/src/event/modules/ngx_ff_module.c
@@ -545,6 +545,11 @@ kevent(int kq, const struct kevent *changelist, int nchanges,
     return ff_kevent(kq, changelist, nchanges, eventlist, nevents, timeout);
 }
 
+/*
+ * It is need to modify the definition, such as Ubuntu 22.04 or later.
+ *
+ * int(struct timeval * restrict,  void * restrict)
+ */
 int
 gettimeofday(struct timeval *tv, struct timezone *tz)
 {
diff --git a/freebsd/kern/kern_linker.c b/freebsd/kern/kern_linker.c
index e54546eec..2fb07a4f6 100644
--- a/freebsd/kern/kern_linker.c
+++ b/freebsd/kern/kern_linker.c
@@ -771,7 +771,7 @@ linker_file_add_dependency(linker_file_t file, linker_file_t dep)
 	file->deps[file->ndeps] = dep;
 	file->ndeps++;
 	KLD_DPF(FILE, ("linker_file_add_dependency:"
-	    " adding %s as dependency for %s\n", 
+	    " adding %s as dependency for %s\n",
 	    dep->filename, file->filename));
 	return (0);
 }
@@ -1862,7 +1862,11 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
 		goto bad;
 	best = cp = NULL;
 	error = VOP_GETATTR(nd.ni_vp, &vattr, cred);
+#ifdef FSTACK
+	if (error || vattr.va_size == 0)
+#else
 	if (error)
+#endif
 		goto bad;
 	/*
 	 * XXX: we need to limit this number to some reasonable value
diff --git a/freebsd/netinet/in_mcast.c b/freebsd/netinet/in_mcast.c
index 6d390a0b2..97214d6d7 100644
--- a/freebsd/netinet/in_mcast.c
+++ b/freebsd/netinet/in_mcast.c
@@ -760,7 +760,11 @@ imf_get_source(struct in_mfilter *imf, const struct sockaddr_in *psin,
 	if (lims == NULL) {
 		if (imf->imf_nsrc == in_mcast_maxsocksrc)
 			return (ENOSPC);
+#ifdef FSTACK
+		nims = malloc(sizeof(struct ip_msource), M_INMFILTER,
+#else
 		nims = malloc(sizeof(struct in_msource), M_INMFILTER,
+#endif
 		    M_NOWAIT | M_ZERO);
 		if (nims == NULL)
 			return (ENOMEM);
@@ -791,7 +795,11 @@ imf_graft(struct in_mfilter *imf, const uint8_t st1,
 	struct ip_msource	*nims;
 	struct in_msource	*lims;
 
+#ifdef FSTACK
+	nims = malloc(sizeof(struct ip_msource), M_INMFILTER,
+#else
 	nims = malloc(sizeof(struct in_msource), M_INMFILTER,
+#endif
 	    M_NOWAIT | M_ZERO);
 	if (nims == NULL)
 		return (NULL);
diff --git a/freebsd/netinet6/in6_mcast.c b/freebsd/netinet6/in6_mcast.c
index 9b04c87d2..75dba103f 100644
--- a/freebsd/netinet6/in6_mcast.c
+++ b/freebsd/netinet6/in6_mcast.c
@@ -729,7 +729,11 @@ im6f_get_source(struct in6_mfilter *imf, const struct sockaddr_in6 *psin,
 	if (lims == NULL) {
 		if (imf->im6f_nsrc == in6_mcast_maxsocksrc)
 			return (ENOSPC);
+#ifdef FSTACK
+		nims = malloc(sizeof(struct ip6_msource), M_IN6MFILTER,
+#else
 		nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER,
+#endif
 		    M_NOWAIT | M_ZERO);
 		if (nims == NULL)
 			return (ENOMEM);
@@ -760,7 +764,11 @@ im6f_graft(struct in6_mfilter *imf, const uint8_t st1,
 	struct ip6_msource	*nims;
 	struct in6_msource	*lims;
 
+#ifdef FSTACK
+	nims = malloc(sizeof(struct ip6_msource), M_IN6MFILTER,
+#else
 	nims = malloc(sizeof(struct in6_msource), M_IN6MFILTER,
+#endif
 	    M_NOWAIT | M_ZERO);
 	if (nims == NULL)
 		return (NULL);