[tor-bugs] #29819 [Core Tor/Tor]: Seccomp: sandbox crash on rt_sigaction with libseccomp 0.2.4

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#29819: Seccomp: sandbox crash on rt_sigaction with libseccomp 0.2.4
-------------------------------------------------+-------------------------
 Reporter:  toralf                               |          Owner:  nickm
     Type:  defect                               |         Status:
                                                 |  merge_ready
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  unspecified
 Severity:  Normal                               |     Resolution:
 Keywords:  consider-backport-after-0431,        |  Actual Points:
  crash, linux, sandbox 035-backport             |
  041-backport 042-backport                      |
Parent ID:                                       |         Points:  2-10
 Reviewer:  nickm                                |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by toralf):

 I cherrypicked commit 0d64bafcf and applied it at the affected Tor relay
 running 0.4.2.5 (hardened Gentoo Linux).

 It seems to work, Tor starts for both relays and and even more survives a
 change in a config file located under /etc/tor/torrc.d/.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29819#comment:33>
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