autofs-5.0.7 - recheck valid map entry lookup return in do_readmap_mount()

From: Ian Kent <raven@themaw.net>

After looking for an expected existing valid map entry in do_readmap_mount()

add a check in case it isn't found.

If it actually isn't found (although it always should be) the only thing

that can be done is log an error return.

---

 daemon/state.c |    6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/daemon/state.c b/daemon/state.c

index 6e23022..ddc5556 100644

--- a/daemon/state.c

+++ b/daemon/state.c

@@ -405,6 +405,12 @@ static void do_readmap_mount(struct autofs_point *ap, struct mnt_list *mnts,

 			     me->key);

 			cache_writelock(vmc);

 			valid = cache_lookup_distinct(vmc, me->key);

+			if (!valid) {

+				cache_unlock(vmc);

+				error(ap->logopt,

+				     "failed to find expected existing valid map entry");

+				return;

+			}

 			/* Take over the mount if there is one */

 			valid->ioctlfd = me->ioctlfd;

 			me->ioctlfd = -1;