Differential D30110

netgraph/ng_base: Renaming a node to the same name is a noop
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Authored by donner on May 4 2021, 7:27 PM.

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rGb57a593cb2d6: netgraph/ng_base: Renaming a node to the same name is a noop
rGa0694da5d035: netgraph/ng_base: Renaming a node to the same name is a noop
rG37370a6773cd: netgraph/ng_base: Renaming a node to the same name is a noop
rG0345fd891fe1: netgraph/ng_base: Renaming a node to the same name is a noop

Summary

Detailed analysis in https://github.com/genneko/freebsd-vimage-jails/issues/2
brought the problem down to a double call of ng_node_name() before and
after a vnet move. Because the name of the node is already known
(occupied by itself), the second call fails.

PR: 241954
Reported by: Paul Armstrong
MFC: 1 week

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rG FreeBSD src repository

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Event Timeline

donner created this revision.May 4 2021, 7:27 PM

Herald added subscribers: Contributor Reviews (src), melifaro, imp. · View Herald TranscriptMay 4 2021, 7:27 PM

donner requested review of this revision.May 4 2021, 7:27 PM

Harbormaster completed remote builds in B39006: Diff 88616.May 4 2021, 7:27 PM

donner added reviewers: network, pi.May 4 2021, 7:30 PM

This revision was not accepted when it landed; it landed in state Needs Review.Jun 4 2021, 9:22 AM

Closed by commit rG0345fd891fe1: netgraph/ng_base: Renaming a node to the same name is a noop (authored by donner). · Explain Why

This revision was automatically updated to reflect the committed changes.

donner added a commit: rG0345fd891fe1: netgraph/ng_base: Renaming a node to the same name is a noop.

donner added a commit: rG37370a6773cd: netgraph/ng_base: Renaming a node to the same name is a noop.Jun 10 2021, 9:31 AM

donner added a commit: rGa0694da5d035: netgraph/ng_base: Renaming a node to the same name is a noop.Jun 10 2021, 9:34 AM

donner added a commit: rGb57a593cb2d6: netgraph/ng_base: Renaming a node to the same name is a noop.

donner mentioned this in D30713: tests/netgraph: Check for PR241954.Jun 10 2021, 10:08 AM

donner mentioned this in rG43e4821315c3: tests/netgraph: Check for PR241954.Jun 13 2021, 8:32 PM

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sys/

netgraph/

4 lines

Diff 90397

sys/netgraph/ng_base.c

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