ping6: treat setsockopt failures as fatal
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Authored by chris.longros_gmail.com on Apr 3 2026, 3:13 PM.

Details

Reviewers

jlduran
des
pouria
glebius

Group Reviewers

network

Commits

rGc2b4fbdb45e9: ping6: treat setsockopt failures as fatal
rG2d2f92194f07: ping6: treat setsockopt failures as fatal
rG5fd7eb1b8996: ping6: treat setsockopt failures as fatal
rG9a4a9f623bba: ping6: treat setsockopt failures as fatal

Summary

ping6 needs IPV6_RECVPKTINFO and IPV6_RECVHOPLIMIT to process
incoming replies. When these options fail, replies are silently
dropped and ping6 appears to hang. Use err(3) instead of warn(3)
so the user gets a clear error and immediate exit.

Signed-off-by: Christos Longros <chris.longros@gmail.com>

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

chris.longros_gmail.com created this revision.Apr 3 2026, 3:13 PM

Herald added a subscriber: imp. · View Herald TranscriptApr 3 2026, 3:13 PM

chris.longros_gmail.com requested review of this revision.Apr 3 2026, 3:13 PM

Harbormaster completed remote builds in B71938: Diff 174861.Apr 3 2026, 3:13 PM

chris.longros_gmail.com added reviewers: jlduran, des.Apr 3 2026, 3:13 PM

jlduran accepted this revision.Apr 7 2026, 11:51 AM

This revision is now accepted and ready to land.Apr 7 2026, 11:51 AM

@jlduran Hi, this has been accepted — could you commit it? Thanks!

jlduran added a reviewer: network.Thu, Apr 16, 5:22 PM

Yes, this should be pretty straightforward.
I added the network project, just in case. Let's wait one more week, plus an MFC of one week after that.
If this is time-sensitive, let me know and I will commit sooner. Thank you!

LGTM, but I can't test it because almost all of those values are validated before reaching those lines.
I would appreciate it if you could provide steps to reproduce.

I don't think it is possible to reproduce that. The program always passes correct optval to a correct socket. The flag enabling setsockopt() shall never fail in the kernel. Treat that more as a stylistic change. It might be useful for FreeBSD-derived projects, e.g. if Mac OS X refreshes their ping(1) with our ping, as they already did in the past, and their kernel may fail at these setsockopts.

Closed by commit rG9a4a9f623bba: ping6: treat setsockopt failures as fatal (authored by chris.longros_gmail.com, committed by jlduran). · Explain WhyFri, Apr 17, 6:22 PM

This revision was automatically updated to reflect the committed changes.

jlduran added a commit: rG9a4a9f623bba: ping6: treat setsockopt failures as fatal.

jlduran added a commit: rG5fd7eb1b8996: ping6: treat setsockopt failures as fatal.Fri, Apr 24, 12:54 AM

jlduran added a commit: rG2d2f92194f07: ping6: treat setsockopt failures as fatal.

jlduran added a commit: rGc2b4fbdb45e9: ping6: treat setsockopt failures as fatal.