Differential D51627

pf: return errors from pf_route() and pf_route6()
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Authored by kp on Jul 29 2025, 7:38 PM.

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rG349360b17eab: pf: return errors from pf_route() and pf_route6()

Summary

If we fail to route the packet in pf_route()/pf_route6() (e.g. because it
hit the TTL limit) we free the mbuf. If that packet is an SCTP packet that
establishes extra (i.e. multihome) states we have a queued job to handle that.
These jobs reference the now freed mbuf.

Pass the error from pf_route()/pf_route6() on, so that
pf_sctp_multihome_delayed() doesn't attempt to use the invalid mbuf pointer (or
establishes states for a packet we're not passing).

PR: 288274
Reported by: Robert Morris <rtm@lcs.mit.edu>
Sponsored by: Rubicon Communications, LLC ("Netgate")

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rG FreeBSD src repository

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Event Timeline

kp created this revision.Jul 29 2025, 7:38 PM

Herald added subscribers: vegeta_tuxpowered.net, glebius, melifaro and 2 others. · View Herald TranscriptJul 29 2025, 7:38 PM

kp requested review of this revision.Jul 29 2025, 7:38 PM

Harbormaster completed remote builds in B65840: Diff 159424.Jul 29 2025, 7:38 PM

This revision was not accepted when it landed; it landed in state Needs Review.Aug 4 2025, 8:12 AM

Closed by commit rG349360b17eab: pf: return errors from pf_route() and pf_route6() (authored by kp). · Explain Why

This revision was automatically updated to reflect the committed changes.

kp added a commit: rG349360b17eab: pf: return errors from pf_route() and pf_route6().

Revision Contents
Changeset List

Path

Size

sys/

netpfil/

pf/

66 lines

tests/

sys/

netpfil/

pf/

28 lines

Diff 159703

sys/netpfil/pf/pf.c

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tests/sys/netpfil/pf/nat64.py

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