Author: trasz
Date: Sun Oct 18 14:36:04 2015
New Revision: 289512
URL: https://svnweb.freebsd.org/changeset/base/289512
Log:
MFC r286283:
Fix panic triggered by code like this:
open("/dev/md0", O_EXEC);
Sponsored by: The FreeBSD Foundation
Modified:
stable/10/sys/geom/geom_dev.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/geom/geom_dev.c
==============================================================================
--- stable/10/sys/geom/geom_dev.c Sun Oct 18 14:34:13 2015
(r289511)
+++ stable/10/sys/geom/geom_dev.c Sun Oct 18 14:36:04 2015
(r289512)
@@ -356,6 +356,13 @@ g_dev_open(struct cdev *dev, int flags,
#else
e = 0;
#endif
+
+ /*
+ * This happens on attempt to open a device node with O_EXEC.
+ */
+ if (r + w + e == 0)
+ return (EINVAL);
+
if (w) {
/*
* When running in very secure mode, do not allow
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