[tor-bugs] #23590 [Applications/Tor Browser]: Tor Browser needs write access to /dev/shm

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Sep 20 20:30:17 UTC 2017

#23590: Tor Browser needs write access to /dev/shm
 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:

Comment (by yawning):

 Replying to [comment:2 gk]:
 > Looking around I am actually not convinced this is a Tor Browser bug.
 Chrome has even an own error message for that pointing to chmod 1777:
 > {{{
 > [4856:4856:0820/085005:ERROR:shared_memory_posix.cc(258)] Unable to
 access(W_OK|X_OK) /dev/shm: Permission denied
 > [4856:4856:0820/085005:FATAL:shared_memory_posix.cc(260)] This is
 frequently caused by incorrect permissions on /dev/shm.  Try 'sudo chmod
 1777 /dev/shm' to fix.
 > }}}

 Yeah it's not.  Normal users should be able to (among other things) create
 POSIX shared memory objects via `shm_open()`, and it is reasonable to
 expect that this will succeed.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23590#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

More information about the tor-bugs mailing list