libadmin: Don't free garbage pointer

If we jump to the error handler early on in pts_GroupOwnerChange,
idlist may not have been used, and so we will end up trying to
free stack garbage.

Initialise the structure to 0 at the start of the function, so it
is always safe to enter the error handler.

Caught by coverity (#985962)

Reviewed-on: http://gerrit.openafs.org/9398
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 8260d86dda766a21e9f457994e7a3b259ba3a31b)

Change-Id: I79f7fe3cba11a2904c644e6747511e3630d74a79
Reviewed-on: http://gerrit.openafs.org/11047
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>

diff --git a/src/libadmin/pts/afs_ptsAdmin.c b/src/libadmin/pts/afs_ptsAdmin.c
index c74e897136cfc305fa3e75391525c4d40344ee73..05bf37607f614b85c3458edee7ec65482c4de428 100644 (file)
--- a/src/libadmin/pts/afs_ptsAdmin.c
+++ b/src/libadmin/pts/afs_ptsAdmin.c
@@ -465,6 +465,8 @@ pts_GroupOwnerChange(const void *cellHandle, const char *targetGroup,
     afs_cell_handle_p c_handle = (afs_cell_handle_p) cellHandle;
     idlist ids;
 
+    memset(&ids, 0, sizeof(ids));
+
     /*
      * Validate arguments
      */