diff options
Diffstat (limited to 'libsanitizer/tsan/tsan_sync.cc')
| -rw-r--r-- | libsanitizer/tsan/tsan_sync.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libsanitizer/tsan/tsan_sync.cc b/libsanitizer/tsan/tsan_sync.cc index 04fef615531..0c5be105f67 100644 --- a/libsanitizer/tsan/tsan_sync.cc +++ b/libsanitizer/tsan/tsan_sync.cc @@ -263,6 +263,11 @@ void StackTrace::ObtainCurrent(ThreadState *thr, uptr toppc) { n_ = c_ - !!toppc; } } else { + // Cap potentially huge stacks. + if (n_ + !!toppc > kTraceStackSize) { + start = n_ - kTraceStackSize + !!toppc; + n_ = kTraceStackSize - !!toppc; + } s_ = (uptr*)internal_alloc(MBlockStackTrace, (n_ + !!toppc) * sizeof(s_[0])); } |