diff mbox series

[hurd,commited,2/7] hurd _S_msg_add_auth: Initialize new arrays to 0

Message ID 20230102100938.2778311-3-samuel.thibault@ens-lyon.org
State New
Headers show
Series hurd: fixes | expand

Commit Message

Samuel Thibault Jan. 2, 2023, 10:09 a.m. UTC 
If make_list fails, they would be undefined, and freeup with free
uninitialized pointers.
---
 hurd/hurdauth.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/hurd/hurdauth.c b/hurd/hurdauth.c
index 9086e9484c..25cc8ee88d 100644
--- a/hurd/hurdauth.c
+++ b/hurd/hurdauth.c
@@ -101,21 +101,24 @@  _S_msg_add_auth (mach_port_t me,
   __mutex_lock (&_hurd_id.lock);
   _hurd_check_ids ();
 
-#define MAKE(genaux,uidgid) 						    \
-  make_list (&new ## genaux ## uidgid ## s, 				    \
+#define MAKE(genaux,uidgid) ({						    \
+  new ## genaux ## uidgid ## s = 0;					    \
+  nnew ## genaux ## uidgid ## s = 0;					    \
+  make_list (&new ## genaux ## uidgid ## s,				    \
 	     &nnew ## genaux ## uidgid ## s,				    \
 	     _hurd_id.genaux.uidgid ## s,				    \
 	     _hurd_id.genaux.n ## uidgid ## s,				    \
 	     genaux ## uidgid ## s,					    \
-	     n ## genaux ## uidgid ## s)
+	     n ## genaux ## uidgid ## s);				    \
+})
 
   err = MAKE (gen, uid);
   if (!err)
-    MAKE (aux, uid);
+    err = MAKE (aux, uid);
   if (!err)
-    MAKE (gen, gid);
+    err = MAKE (gen, gid);
   if (!err)
-    MAKE (aux, gid);
+    err = MAKE (aux, gid);
 #undef MAKE
 
   __mutex_unlock (&_hurd_id.lock);