[tor-bugs] #21514 [Applications/Tor Browser]: Deal with W^X backport bustage in upcoming ESR release

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#21514: Deal with W^X backport bustage in upcoming ESR release
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 Reporter:  gk                        |          Owner:  arthuredelstein
     Type:  task                      |         Status:  needs_review
 Priority:  Very High                 |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Critical                  |     Resolution:
 Keywords:  TorBrowserTeam201703R     |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by arthuredelstein):

 I tested my own build of the 21514+5 branch on Linux. Using
 {{{
 cat /proc/$PID/maps | grep rwx
 }}}
 I confirmed that there were no rwx pages.

 I also tried reverting the W^X patch and then the same command showed
 several "rwxp" pages. So it looks like it is working as expected.

 I'm not sure yet how to do the same thing on OS X, but the vmmap command
 line tool looks promising. Windows has VMMap
 (https://technet.microsoft.com/en-us/sysinternals/vmmap.aspx), which I am
 going to try next.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21514#comment:11>
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