Fix abnormal symbol parsing when __irqentry_text_end is before __irqe…

…ntry_text_start On my ARM64 kernel 5.4 case Symbol: ffffffc0100820b8 T __irqentry_text_end ffffffc0100820b8 T __irqentry_text_start It will ignore all functions after __irqentry_text_start until __irqentry_text_end. But this case __irqentry_text_end is before __irqentry_text_start. So the problem happens. Signed-off-by: Edward Wu <[email protected]>
Ha-Dj · Mar 5, 2021 · a090b46 · a090b46
1 parent 08d6340
commit a090b46
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/python/bcc/__init__.py b/src/python/bcc/__init__.py
@@ -587,6 +587,12 @@ def get_kprobe_functions(event_re):
  if fn == b'__irqentry_text_start':
  in_irq_section = 1
  continue
+ # __irqentry_text_end is not always after
+ # __irqentry_text_start. But only happens when
+ # no functions between two irqentry_text
+ elif fn == b'__irqentry_text_end':
+ in_irq_section = 2
+ continue
  elif in_irq_section == 1:
  if fn == b'__irqentry_text_end':
  in_irq_section = 2