lwp/iomgr.c: avoid off-by-one out-of-bounds access

Avoid accessing sigDelivered[NSIG] and sigEvents[NSIG], which are
out-of-bounds by one.

Reviewed-on: http://gerrit.openafs.org/8883
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit bd850e5b980d34236ee98d16b9717860b63af306)

Change-Id: I859c654b8d35484aeeb029432c69848846335fb8
Reviewed-on: http://gerrit.openafs.org/9516
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>

diff --git a/src/lwp/iomgr.c b/src/lwp/iomgr.c
index 74df51754d0384017898dc2f94f32e069d465fda..7774ecf56e51065aa6bb3761e900367bea78c973 100644 (file)
--- a/src/lwp/iomgr.c
+++ b/src/lwp/iomgr.c
@@ -709,7 +709,7 @@ static int SignalSignals (void)
        sigProc[i] = 0;
     }
 
-    for (i = 1; i <= NSIG; ++i)  /* forall !badsig(i) */
+    for (i = 1; i < NSIG; ++i)  /* forall !badsig(i) */
        if ((sigsHandled & mysigmask(i)) && sigDelivered[i] == TRUE) {
            sigDelivered[i] = FALSE;
            LWP_NoYieldSignal (sigEvents[i]);