https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200361
--- Comment #5 from Hiren Panchasara <hi...@freebsd.org> ---
(In reply to Hiren Panchasara from comment #4)
diff --git a/sys/netinet/tcp_hostcache.c b/sys/netinet/tcp_hostcache.c
index bb2efda..d27f2b5 100644
--- a/sys/netinet/tcp_hostcache.c
+++ b/sys/netinet/tcp_hostcache.c
@@ -69,10 +69,12 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/malloc.h>
+#include <sys/proc.h>
#include <sys/sbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
@@ -625,6 +627,9 @@ sysctl_tcp_hc_list(SYSCTL_HANDLER_ARGS)
char ip6buf[INET6_ADDRSTRLEN];
#endif
+ if (jailed_without_vnet(curthread->td_ucred) != 0)
+ return (EPERM);
+
sbuf_new(&sb, NULL, linesize * (V_tcp_hostcache.cache_count + 1),
SBUF_INCLUDENUL);
Correct version that compiles.
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