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pf: Use MTX_DUPOK to initialize hash chain mutexes
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Authored by markj on Apr 18 2026, 12:12 PM.
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imp
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kp
glebius
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rGffad36e1d700: pf: Use MTX_DUPOK to initialize hash chain mutexes
Summary

pf_udp_mapping_insert() may lock more than one row at a time.

Fixes: cd5ff4e841fb ("pf: use hashalloc(9) for key, id, src-node and udp-endpoint hashes")

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rG FreeBSD src repository
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Event Timeline

markj created this revision.Apr 18 2026, 12:12 PM
Herald added subscribers: vegeta_tuxpowered.net, melifaro, farrokhi, imp. · View Herald TranscriptApr 18 2026, 12:12 PM
markj requested review of this revision.Apr 18 2026, 12:12 PM
Harbormaster completed remote builds in B72322: Diff 175832.Apr 18 2026, 12:13 PM
glebius requested changes to this revision.Apr 18 2026, 6:58 PM

I screwed up, but not on this hash. Looking at cd5ff4e841fb I see that I lost MTX_DUPOK on UDP endpoint hash.

This revision now requires changes to proceed.Apr 18 2026, 6:58 PM
glebius added inline comments.Apr 18 2026, 6:58 PM
sys/netpfil/pf/pf.c
1499–1500

Should be here!

kp added a comment.Apr 19 2026, 9:37 AM

I did see a warning about that recently but didn't investigate too much. This (with Gleb's remark) makes sense.

markj updated this revision to Diff 175904.Apr 20 2026, 3:10 PM

Update the right hash.

Harbormaster completed remote builds in B72369: Diff 175904.Apr 20 2026, 3:10 PM
kp added inline comments.Apr 20 2026, 3:24 PM
sys/netpfil/pf/pf.c
1500

That wants to be 'lopts', not 'lops'.

markj updated this revision to Diff 175906.Apr 20 2026, 3:25 PM
markj marked an inline comment as done.

Typo

Harbormaster completed remote builds in B72371: Diff 175906.Apr 20 2026, 3:25 PM
kp accepted this revision.Apr 20 2026, 4:12 PM
This revision was not accepted when it landed; it landed in state Needs Review.Apr 20 2026, 4:50 PM
Closed by commit rGffad36e1d700: pf: Use MTX_DUPOK to initialize hash chain mutexes (authored by markj). · Explain Why
This revision was automatically updated to reflect the committed changes.
markj added a commit: rGffad36e1d700: pf: Use MTX_DUPOK to initialize hash chain mutexes.

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sys/
netpfil/
pf/
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Diff 175916

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sys/netpfil/pf/pf.c

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