From: Jonathan Peyton <jonathan.l.peyton@intel.com>
Date: Wed, 28 Nov 2018 20:15:11 +0000 (+0000)
Subject: [OpenMP] Fixed possible array out of bound access
X-Git-Tag: llvmorg-8.0.0-rc1~3377
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f4c0720ad0bcdb895218cfdc35e72eeea15e294d;p=platform%2Fupstream%2Fllvm.git

[OpenMP] Fixed possible array out of bound access

There is low probability that array th_hot_teams can be
accessed out of bound (when many nested levels are requested
to keep hot teams via KMP_HOT_TEAMS_MAX_LEVEL). The patch
adds the check of index that fixes the problem.

Patch by Andrey Churbanov

Differential Revision: https://reviews.llvm.org/D54950

llvm-svn: 347800
---

diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp
index f2e9956..44774e9 100644
--- a/openmp/runtime/src/kmp_runtime.cpp
+++ b/openmp/runtime/src/kmp_runtime.cpp
@@ -2132,6 +2132,7 @@ int __kmp_fork_call(ident_t *loc, int gtid,
         master_th->th.th_task_state_top++;
 #if KMP_NESTED_HOT_TEAMS
         if (master_th->th.th_hot_teams &&
+            active_level < __kmp_hot_teams_max_level &&
             team == master_th->th.th_hot_teams[active_level].hot_team) {
           // Restore master's nested state if nested hot team
           master_th->th.th_task_state =