ddb: add show all tcpcbs
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Authored by tuexen on May 24 2025, 7:21 PM.

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Reviewers

glebius
markj
rrs
peter.lei_ieee.org
lstewart
rscheff
cc
thj

Group Reviewers

transport

Commits

rGf1430567f26b: ddb: add show all tcpcbs

Summary

Add a command to show all TCP control blocks. Also provide an option to limit the output to TCP control blocks, which are locked.

The plan is to run show all tcpcbs/l when syzkaller triggers a panic. If a TCP control is affected, it is most likely locked and therefore the command shows the information of the affected TCP control block.

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Repository

rG FreeBSD src repository

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Event Timeline

tuexen created this revision.May 24 2025, 7:21 PM

Herald added a reviewer: transport. · View Herald TranscriptMay 24 2025, 7:21 PM

Herald added subscribers: ziaee, melifaro, imp. · View Herald Transcript

tuexen requested review of this revision.May 24 2025, 7:21 PM

Rebase.

markj accepted this revision.May 25 2025, 2:51 PM

Please commit this with "Tested by: thj".

I tested this yesterday with the other tcp ddb change, but it looks like phab didn't submit the accept. I was running a perf test over that link so its probably more on me than phab.

This revision is now accepted and ready to land.May 28 2025, 8:36 AM

Closed by commit rGf1430567f26b: ddb: add show all tcpcbs (authored by tuexen). · Explain WhyMay 28 2025, 10:30 AM

This revision was automatically updated to reflect the committed changes.

tuexen added a commit: rGf1430567f26b: ddb: add show all tcpcbs.