Author: kib
Date: Tue Jul 6 18:20:49 2010
New Revision: 209742
URL: http://svn.freebsd.org/changeset/base/209742
Log:
In revoke(), verify that VCHR vnode indeed belongs to devfs.
Found and tested by: pho
MFC after: 1 week
Modified:
head/sys/kern/vfs_syscalls.c
Modified: head/sys/kern/vfs_syscalls.c
==============================================================================
--- head/sys/kern/vfs_syscalls.c Tue Jul 6 18:17:31 2010
(r209741)
+++ head/sys/kern/vfs_syscalls.c Tue Jul 6 18:20:49 2010
(r209742)
@@ -4215,7 +4215,7 @@ revoke(td, uap)
vfslocked = NDHASGIANT(&nd);
vp = nd.ni_vp;
NDFREE(&nd, NDF_ONLY_PNBUF);
- if (vp->v_type != VCHR) {
+ if (vp->v_type != VCHR || vp->v_rdev == NULL) {
error = EINVAL;
goto out;
}
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