[tor-bugs] #20976 [Applications/Tor Browser Sandbox]: Official `sandboxed-tor-browser` binaries break with PaX MPROTECT.

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#20976: Official `sandboxed-tor-browser` binaries break with PaX MPROTECT.
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 Reporter:  yawning                           |          Owner:  yawning
     Type:  defect                            |         Status:  new
 Priority:  Medium                            |      Milestone:
Component:  Applications/Tor Browser Sandbox  |        Version:
 Severity:  Normal                            |     Resolution:
 Keywords:                                    |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Comment (by cypherpunks):

 Replying to [comment:3 yawning]:
 > It's not firefox that's crashing, it's the launcher.
 >
 > {{{
 > mprotect(0x52fb4b3000, 15585280, PROT_READ|PROT_WRITE) = -1 EACCES
 (Permission denied)
 > /home/yawning/.local/bin/sandboxed-tor-browser-0.0.2: error while
 loading shared libraries: cannot make segment writable for relocation:
 Permission denied
 > exit_group(127)                         = ?
 > }}}
 What was `0x52fb4b3000` referring to in that trace? It had to have been a
 library or executable or something which was originally mapped as
 `PROT_READ|PROT_EXEC`, but what?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20976#comment:6>
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