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-rw-r--r--src/processor/stackwalker_mips.cc33
1 files changed, 17 insertions, 16 deletions
diff --git a/src/processor/stackwalker_mips.cc b/src/processor/stackwalker_mips.cc
index f6368509..a3df84c4 100644
--- a/src/processor/stackwalker_mips.cc
+++ b/src/processor/stackwalker_mips.cc
@@ -55,22 +55,23 @@ StackwalkerMIPS::StackwalkerMIPS(const SystemInfo* system_info,
StackFrameSymbolizer* resolver_helper)
: Stackwalker(system_info, memory, modules, resolver_helper),
context_(context) {
- if (context_->context_flags & MD_CONTEXT_MIPS64 ) {
- if ((memory_ && memory_->GetBase() + memory_->GetSize() - 1)
- > 0xffffffffffffffff) {
- BPLOG(ERROR) << "Memory out of range for stackwalking mips64: "
- << HexString(memory_->GetBase())
- << "+"
- << HexString(memory_->GetSize());
- memory_ = NULL;
- }
- } else {
- if ((memory_ && memory_->GetBase() + memory_->GetSize() - 1) > 0xffffffff) {
- BPLOG(ERROR) << "Memory out of range for stackwalking mips32: "
- << HexString(memory_->GetBase())
- << "+"
- << HexString(memory_->GetSize());
- memory_ = NULL;
+ if (memory_) {
+ if (context_->context_flags & MD_CONTEXT_MIPS64 ) {
+ if (0xffffffffffffffff - memory_->GetBase() < memory_->GetSize() - 1) {
+ BPLOG(ERROR) << "Memory out of range for stackwalking mips64: "
+ << HexString(memory_->GetBase())
+ << "+"
+ << HexString(memory_->GetSize());
+ memory_ = NULL;
+ }
+ } else {
+ if (0xffffffff - memory_->GetBase() < memory_->GetSize() - 1) {
+ BPLOG(ERROR) << "Memory out of range for stackwalking mips32: "
+ << HexString(memory_->GetBase())
+ << "+"
+ << HexString(memory_->GetSize());
+ memory_ = NULL;
+ }
}
}
}