Fix reference counting in network interface information cache

2 files changed, 7 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 139ba57532..8bb25138ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-15  Andreas Schwab  <schwab@redhat.com>
+
+	* sysdeps/unix/sysv/linux/check_pf.c (make_request): Properly
+	count references to noai6ai_cached.
+
 2011-11-15  Ulrich Drepper  <drepper@gmail.com>
 
 	* time/getdate.c (__getdate_r): Set FD_CLOEXEC for given file.
diff --git a/sysdeps/unix/sysv/linux/check_pf.c b/sysdeps/unix/sysv/linux/check_pf.c
index 1f66684e4f..895dc2a285 100644
--- a/sysdeps/unix/sysv/linux/check_pf.c
+++ b/sysdeps/unix/sysv/linux/check_pf.c
@@ -58,7 +58,7 @@ struct cached_data
 
 static struct cached_data noai6ai_cached =
   {
-    .usecnt = 3,	/* Make sure we never try to delete this entry.  */
+    .usecnt = 1,	/* Make sure we never try to delete this entry.  */
     .in6ailen = 0
   };
 
@@ -273,6 +273,7 @@ make_request (int fd, pid_t pid)
     }
   else
     {
+      atomic_add(&noai6ai_cached.usecnt, 2);
       noai6ai_cached.seen_ipv4 = seen_ipv4;
       noai6ai_cached.seen_ipv6 = seen_ipv6;
       result = &noai6ai_cached;