mallocstacks: validating before stacktrace walk

weibang6liu · Mar 29, 2020 · 472f9b3 · 472f9b3
1 parent 915d6d7
commit 472f9b3
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/examples/tracing/mallocstacks.py b/examples/tracing/mallocstacks.py
@@ -67,5 +67,6 @@
 
 for k, v in reversed(sorted(calls.items(), key=lambda c: c[1].value)):
  print("%d bytes allocated at:" % v.value)
- for addr in stack_traces.walk(k.value):
- printb(b"\t%s" % b.sym(addr, pid, show_offset=True))
+ if k.value > 0 :
+ for addr in stack_traces.walk(k.value):
+ printb(b"\t%s" % b.sym(addr, pid, show_offset=True))