[PATCH] D110424: [llvm-profgen] Ignore invalid perf line in LBR record

[Lei Wang via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGa7cdcf25c17e: [llvm-profgen] Ignore invalid perf line in LBR record (authored by wlei).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110424/new/

https://reviews.llvm.org/D110424

Files:
  llvm/test/tools/llvm-profgen/Inputs/noprobe.perfscript
  llvm/tools/llvm-profgen/PerfReader.cpp


Index: llvm/tools/llvm-profgen/PerfReader.cpp
===================================================================
--- llvm/tools/llvm-profgen/PerfReader.cpp
+++ llvm/tools/llvm-profgen/PerfReader.cpp
@@ -417,10 +417,21 @@
   // It's in FIFO order and seperated by whitespace.
   SmallVector<StringRef, 32> Records;
   TraceIt.getCurrentLine().split(Records, " ", -1, false);
+  auto WarnInvalidLBR = [](TraceStream &TraceIt) {
+    WithColor::warning() << "Invalid address in LBR record at line "
+                         << TraceIt.getLineNumber() << ": "
+                         << TraceIt.getCurrentLine() << "\n";
+  };
 
   // Skip the leading instruction pointer.
   size_t Index = 0;
+  uint64_t LeadingAddr;
   if (!Records.empty() && Records[0].find('/') == StringRef::npos) {
+    if (Records[0].getAsInteger(16, LeadingAddr)) {
+      WarnInvalidLBR(TraceIt);
+      TraceIt.advance();
+      return false;
+    }
     Index = 1;
   }
   // Now extract LBR samples - note that we do not reverse the
@@ -439,11 +450,9 @@
     uint64_t Dst;
 
     // Stop at broken LBR records.
-    if (Addresses[0].substr(2).getAsInteger(16, Src) ||
+    if (Addresses.size() < 2 || Addresses[0].substr(2).getAsInteger(16, Src) ||
         Addresses[1].substr(2).getAsInteger(16, Dst)) {
-      WithColor::warning() << "Invalid address in LBR record at line "
-                           << TraceIt.getLineNumber() << ": "
-                           << TraceIt.getCurrentLine() << "\n";
+      WarnInvalidLBR(TraceIt);
       break;
     }
 
Index: llvm/test/tools/llvm-profgen/Inputs/noprobe.perfscript
===================================================================
--- llvm/test/tools/llvm-profgen/Inputs/noprobe.perfscript
+++ llvm/test/tools/llvm-profgen/Inputs/noprobe.perfscript
@@ -1,3 +1,4 @@
+// Invalid perf line
            40062f 0x40062f/0x4005b0/P/-/-/9  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/6  0x40062f/0x4005b0/P/-/-/16  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/6  0x40062f/0x4005b0/P/-/-/6  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005c8/0x4005dc/P/-/-/8  0x40062f/0x4005b0/P/-/-/9  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/10  0x40062f/0x4005b0/P/-/-/14  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/7  0x40062f/0x4005b0/P/-/-/8  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005c8/0x4005dc/P/-/-/7  0x40062f/0x4005b0/P/-/-/15  0x400645/0x4005ff/P/-/-/1
            4005d7 0x4005d7/0x4005e5/P/-/-/8  0x40062f/0x4005b0/P/-/-/6  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/2  0x4005c8/0x4005dc/P/-/-/7  0x40062f/0x4005b0/P/-/-/11  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/8  0x40062f/0x4005b0/P/-/-/9  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/5  0x40062f/0x4005b0/P/-/-/11  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/2  0x4005c8/0x4005dc/P/-/-/7  0x40062f/0x4005b0/P/-/-/10  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/8  0x40062f/0x4005b0/P/-/-/9  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/13  0x40062f/0x4005b0/P/-/-/9
            4005c8 0x4005c8/0x4005dc/P/-/-/11  0x40062f/0x4005b0/P/-/-/8  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/5  0x40062f/0x4005b0/P/-/-/6  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/12  0x40062f/0x4005b0/P/-/-/6  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/2  0x4005c8/0x4005dc/P/-/-/7  0x40062f/0x4005b0/P/-/-/10  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/8  0x40062f/0x4005b0/P/-/-/9  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/1  0x4005d7/0x4005e5/P/-/-/12  0x40062f/0x4005b0/P/-/-/6  0x400645/0x4005ff/P/-/-/1  0x400637/0x400645/P/-/-/1  0x4005e9/0x400634/P/-/-/2  0x4005c8/0x4005dc/P/-/-/8  0x40062f/0x4005b0/P/-/-/8


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D110424.374950.patch
Type: text/x-patch
Size: 4485 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210924/71e86646/attachment.bin>