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contest: vm: kmemleak: eat, sleep, rave, repeat #54

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Merged
merged 1 commit into from
Sep 3, 2025
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contest: vm: kmemleak: eat, sleep, rave, repeat #54

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7 changes: 4 additions & 3 deletions contest/remote/lib/vm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -405,12 +405,13 @@ def check_health(self):
if self.fail_state:
return
if self.has_kmemleak:
# First scan, to identify possible leaks
self.cmd("echo scan > /sys/kernel/debug/kmemleak")
self.drain_to_prompt()
# kmemleak needs objects to be at least MSECS_MIN_AGE (5000)
# before it considers them to have been leaked
sleep(5)
self.cmd("echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak")
self.drain_to_prompt()
# Do it twice, kmemleak likes to hide the leak on the first attempt
# Second scan, to identify what has really leaked
self.cmd("echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak")
self.drain_to_prompt()

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