tsan: do not crash with obscure message if a user passes invalid arguments to malloc/free/memset/etc
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163092 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/tsan/rtl/tsan_rtl.cc b/lib/tsan/rtl/tsan_rtl.cc
index 962c07a..3860073 100644
--- a/lib/tsan/rtl/tsan_rtl.cc
+++ b/lib/tsan/rtl/tsan_rtl.cc
@@ -433,9 +433,11 @@
addr += offset;
size -= offset;
}
- CHECK_EQ(addr % 8, 0);
- CHECK(IsAppMem(addr));
- CHECK(IsAppMem(addr + size - 1));
+ DCHECK_EQ(addr % 8, 0);
+ // If a user passes some insane arguments (memset(0)),
+ // let it just crash as usual.
+ if (!IsAppMem(addr) || !IsAppMem(addr + size - 1))
+ return;
(void)thr;
(void)pc;
// Some programs mmap like hundreds of GBs but actually used a small part.
