[tor-bugs] #20970 [Applications/Tor Browser Sandbox]: Firefox crashes if the security slider is left at the default on certain pages.

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Dec 14 23:20:11 UTC 2016


#20970: Firefox crashes if the security slider is left at the default on certain
pages.
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 Reporter:  yawning                           |          Owner:  yawning
     Type:  defect                            |         Status:  new
 Priority:  High                              |      Milestone:
Component:  Applications/Tor Browser Sandbox  |        Version:
 Severity:  Normal                            |     Resolution:
 Keywords:                                    |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Comment (by yawning):

 Ah ok, I know what's wrong.

 The sandbox code sets a rlimit with this: `limStack      = 512 * 1024 //
 512 KiB`

 `/proc/$PID/status` at the time of the crash has this: `VmStk:       516
 kB`

 Firefox being a proper modern C++ application, uses a suprising amount of
 stack space.  The solution is to crank the rlimit up to a more traditional
 value like 8 MiB.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20970#comment:6>
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