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Differential D50461

icmp6: zero out pad space
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Authored by kp on May 22 2025, 12:39 PM.
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zlei
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network
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rG0a16f62701f1: icmp6: zero out pad space
Summary

In icmp6_redirect_output() we potentially add padding, but failed to clear this
memory. This triggered a KMSAN panic during the sys/netinet/carp:unicast_v6
test.

Sponsored by: Rubicon Communications, LLC ("Netgate")

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 64348
Build 61232: arc lint + arc unit

Event Timeline

kp created this revision.May 22 2025, 12:39 PM
Herald added subscribers: glebius, melifaro, ae, imp. · View Herald TranscriptMay 22 2025, 12:39 PM
kp requested review of this revision.May 22 2025, 12:39 PM
Harbormaster completed remote builds in B64348: Diff 155858.May 22 2025, 12:39 PM
zlei accepted this revision as: zlei.May 22 2025, 2:24 PM
zlei added a subscriber: zlei.

Looks good to me.

This revision is now accepted and ready to land.May 22 2025, 2:24 PM
Closed by commit rG0a16f62701f1: icmp6: zero out pad space (authored by kp). · Explain WhyMay 23 2025, 1:07 PM
This revision was automatically updated to reflect the committed changes.
kp added a commit: rG0a16f62701f1: icmp6: zero out pad space.

Revision Contents
Changeset List

PathSize
sys/
netinet6/
1 line

Diff 155858

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sys/netinet6/icmp6.c

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