fix(userspace/libsinsp): do not suppress zero ptids #1598
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Signed-off-by: Jason Dellaluce <jasondellaluce@gmail.com>
poiana
added
release-note
kind/bug
Andreagit97
reviewed
Dec 20, 2023
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/milestone 0.14.1 |
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LGTM label has been added. Git tree hash: 096aa2e2bce7f7fca32d471278136b85e1a80f2e
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: Andreagit97, incertum, jasondellaluce The full list of commands accepted by this bot can be found here. The pull request process is described here
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There must be some issues with the multi producer single consumer queue:
Restarted the test. |
This was referenced Jan 9, 2024
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What type of PR is this?
/kind bug
Any specific area of the project related to this PR?
/area libsinsp
Does this PR require a change in the driver versions?
What this PR does / why we need it:
The recent process-based event suppression refactor (cc @gnosek) added a new cache slot for better performance. However, given that the cache slots are likely initialized to zero, we can fall into the case in which we consider a zero TID to be suppressed. The issue with that is that if the zero TID is taken from a PTID of an event (execve, clone, etc...), then we also mark as suppressed the child process. We indeed set PTID to zero in our drivers when we can find no parent for a thread, which in this case would cause a whole hierarchy of processes to have their events ignored.
Which issue(s) this PR fixes:
Special notes for your reviewer:
Does this PR introduce a user-facing change?: