[glibc] hurd: Only deallocate addrport when it's valid

[glibc] hurd: Only deallocate addrport when it's valid

[Samuel Thibault]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4c39333050815a33ddf4f3067798ac060eed1e2b

commit 4c39333050815a33ddf4f3067798ac060eed1e2b
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Sun Apr 23 19:05:47 2023 +0300

    hurd: Only deallocate addrport when it's valid
    
    Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
    Message-Id: <20230423160548.126576-3-bugaevc@gmail.com>

Diff:
---
 sysdeps/mach/hurd/recv.c     | 3 ++-
 sysdeps/mach/hurd/recvfrom.c | 3 ++-
 sysdeps/mach/hurd/recvmsg.c  | 3 ++-
 sysdeps/mach/hurd/sendmsg.c  | 5 +++--
 sysdeps/mach/hurd/sendto.c   | 2 +-
 5 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/sysdeps/mach/hurd/recv.c b/sysdeps/mach/hurd/recv.c
index 3bd5c16fbd..1783e38dcb 100644
--- a/sysdeps/mach/hurd/recv.c
+++ b/sysdeps/mach/hurd/recv.c
@@ -54,7 +54,8 @@ __recv (int fd, void *buf, size_t n, int flags)
   if (err)
     return __hurd_sockfail (fd, flags, err);
 
-  __mach_port_deallocate (__mach_task_self (), addrport);
+  if (MACH_PORT_VALID (addrport))
+    __mach_port_deallocate (__mach_task_self (), addrport);
   __vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
 
   if (bufp != buf)
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);
diff --git a/sysdeps/mach/hurd/recvmsg.c b/sysdeps/mach/hurd/recvmsg.c
index 39de86f64f..90fd2698c0 100644
--- a/sysdeps/mach/hurd/recvmsg.c
+++ b/sysdeps/mach/hurd/recvmsg.c
@@ -135,7 +135,8 @@ __libc_recvmsg (int fd, struct msghdr *message, int flags)
   else if (message->msg_name != NULL)
     message->msg_namelen = 0;
 
-  __mach_port_deallocate (__mach_task_self (), aport);
+  if (MACH_PORT_VALID (aport))
+    __mach_port_deallocate (__mach_task_self (), aport);
 
   if (buf == data)
     buf += len;
diff --git a/sysdeps/mach/hurd/sendmsg.c b/sysdeps/mach/hurd/sendmsg.c
index 5871d1d8dd..7106faf0de 100644
--- a/sysdeps/mach/hurd/sendmsg.c
+++ b/sysdeps/mach/hurd/sendmsg.c
@@ -195,8 +195,9 @@ __libc_sendmsg (int fd, const struct msghdr *message, int flags)
 						   message->msg_controllen,
 						   &amount);
 			      LIBC_CANCEL_RESET (cancel_oldtype);
-			      __mach_port_deallocate (__mach_task_self (),
-						      aport);
+			      if (MACH_PORT_VALID (aport))
+				__mach_port_deallocate (__mach_task_self (),
+							aport);
 			    }
 			  err;
 			}));
diff --git a/sysdeps/mach/hurd/sendto.c b/sysdeps/mach/hurd/sendto.c
index 5a960de8ce..777af1c4d6 100644
--- a/sysdeps/mach/hurd/sendto.c
+++ b/sysdeps/mach/hurd/sendto.c
@@ -94,7 +94,7 @@ __sendto (int fd,
 			  err;
 			}));
 
-  if (aport != MACH_PORT_NULL)
+  if (MACH_PORT_VALID (aport))
     __mach_port_deallocate (__mach_task_self (), aport);
 
   return err ? __hurd_sockfail (fd, flags, err) : wrote;