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-rw-r--r--sysdeps/mach/hurd/recvfrom.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/mach/hurd/recvfrom.c b/sysdeps/mach/hurd/recvfrom.c
index 1cd5f91746..6f2c927ab6 100644
--- a/sysdeps/mach/hurd/recvfrom.c
+++ b/sysdeps/mach/hurd/recvfrom.c
@@ -94,7 +94,8 @@ __recvfrom (int fd, void *buf, size_t n, int flags, __SOCKADDR_ARG addrarg,
   else if (addr_len != NULL)
     *addr_len = 0;
 
-  __mach_port_deallocate (__mach_task_self (), addrport);
+  if (MACH_PORT_VALID (addrport))
+    __mach_port_deallocate (__mach_task_self (), addrport);
 
   /* Toss control data; we don't care.  */
   __vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);