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crit: do not crash on aarch64 doing 'crit x ./ rss'

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Running 'crit x ./ rss' on aarch64 crashes with:

    File "/home/criu/crit/crit/__main__.py", line 331, in explore_rss
      while vmas[vmi]['start'] < pme:
            ~~~~^^^^^
  IndexError: list index out of range

This adds an additional check to the while loop to do access indexes out
of range.

Signed-off-by: Adrian Reber <areber@redhat.com>
This commit is contained in:
Adrian Reber 2024-07-05 08:22:55 +00:00 committed by Andrei Vagin
parent 21ea718f9f
commit 615ccf98cf
1 changed files with 2 additions and 2 deletions
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4
crit/crit/__main__.py
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@ -323,12 +323,12 @@ def explore_rss(opts):
pvmi = -1 pvmi = -1
for pm in pms[1:]: for pm in pms[1:]:
pstr = '\t%lx / %-8d' % (pm['vaddr'], pm['nr_pages']) pstr = '\t%lx / %-8d' % (pm['vaddr'], pm['nr_pages'])
while vmas[vmi]['end'] <= pm['vaddr']: while vmi < len(vmas) and vmas[vmi]['end'] <= pm['vaddr']:
vmi += 1 vmi += 1
pme = pm['vaddr'] + (pm['nr_pages'] << 12) pme = pm['vaddr'] + (pm['nr_pages'] << 12)
vstr = '' vstr = ''
while vmas[vmi]['start'] < pme: while vmi < len(vmas) and vmas[vmi]['start'] < pme:
vma = vmas[vmi] vma = vmas[vmi]
if vmi == pvmi: if vmi == pvmi:
vstr += ' ~' vstr += ' ~'