[tor-bugs] #25401 [Core Tor/Tor]: Transparent proxy stopped working after Linux kernel update to version 4.4.118 that fixes Spectre variant 1

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#25401: Transparent proxy stopped working after Linux kernel update to version
4.4.118 that fixes Spectre variant 1
------------------------------+-----------------------------------------
     Reporter:  FlinchX       |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Immediate     |  Milestone:
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.2.9
     Severity:  Blocker       |   Keywords:  transparent proxy TransPort
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 This happens on a fully updated Slackware64-14.2 system with tor 0.3.2.9
 after an update to kernel 4.4.118 that fixes Spectre variant 1. Same
 version of tor worked fine with a few previous 4.4.x kernel versions
 (4.4.115, 4.4.111, 4.4.88). Tor process freezes in uninterruptible state
 as soon as a program anonymized using this guideline
 https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy#Transparentlyanonymizingtrafficforaspecificuser
 tries to get online. Symptoms are similar to the ones described in this
 ticket https://trac.torproject.org/projects/tor/ticket/25380

 More technical details from two different sources that were able to
 reproduce the issue independently can be found in this forum thread
 https://www.linuxquestions.org/questions/slackware-14/address-already-in-
 use-errors-when-trying-to-restart-tor-4175624554/

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25401>
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