[tor-bugs] #22503 [Applications/Tor Browser]: Tor Browser crash when quit during bootstrap

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jun 6 01:24:40 UTC 2017 

#22503: Tor Browser crash when quit during bootstrap
------------------------------------------+----------------------
     Reporter:  teor                      |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
------------------------------------------+----------------------
 I started Tor Browser by clicking a link from an email, but then quit it
 as it was bootstrapping. Then it crashed like this:

 {{{
 Process:               firefox [63482]
 Path:                  /Applications/TorBrowser.app/Contents/MacOS/firefox
 Identifier:            org.mozilla.tor browser
 Version:               6.5.2 (4517.2.1)
 Code Type:             X86-64 (Native)
 Parent Process:        ??? [1]
 Responsible:           firefox [63482]
 ...
 OS Version:            Mac OS X 10.12.5 (16F73)
 Report Version:        12
 ...
 System Integrity Protection: enabled

 Crashed Thread:        40  Shutdow~minator

 Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
 Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
 Exception Note:        EXC_CORPSE_NOTIFY

 Termination Signal:    Segmentation fault: 11
 Termination Reason:    Namespace SIGNAL, Code 0xb
 Terminating Process:   exc handler [0]

 VM Regions Near 0:
 -->
     __TEXT                 000000010d64f000-000000010d652000 [   12K]
 r-x/rwx SM=COW  /Applications/TorBrowser.app/Contents/MacOS/firefox

 Thread 0:: Dispatch queue: com.apple.main-thread
 0   XUL                                 0x000000010dd4eaa8 0x10dc8e000 +
 789160

 Thread 1:
 0   libsystem_kernel.dylib              0x00007fffa5b9a44e
 __workq_kernreturn + 10
 1   libsystem_pthread.dylib             0x00007fffa5c84621
 _pthread_wqthread + 1426
 2   libsystem_pthread.dylib             0x00007fffa5c8407d start_wqthread
 + 13

 Thread 2:
 0   libsystem_kernel.dylib              0x00007fffa5b9a44e
 __workq_kernreturn + 10
 1   libsystem_pthread.dylib             0x00007fffa5c84621
 _pthread_wqthread + 1426
 2   libsystem_pthread.dylib             0x00007fffa5c8407d start_wqthread
 + 13

 Thread 3:: Gecko_IOThread
 0   libsystem_kernel.dylib              0x00007fffa5b9ad96 kevent + 10
 1   XUL                                 0x000000010df702bc 0x10dc8e000 +
 3023548

 Thread 4:: Closing Service
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 5:: JS Helper
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 ... (5-16 are all the same) ...

 Thread 17:
 0   libsystem_kernel.dylib              0x00007fffa5b9234a mach_msg_trap +
 10
 1   libsystem_kernel.dylib              0x00007fffa5b91797 mach_msg + 55

 Thread 18:: JS Watchdog
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712

 Thread 19:: Hang Monitor
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 20:: Timer
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1de93 PR_WaitCondVar
 + 227

 Thread 21:: Cache2 I/O
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 22:: Cert Verify
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 23:: Compositor
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   XUL                                 0x000000010df60988 0x10dc8e000 +
 2959752
 3   ???                                 0x8000000000000000 0 +
 9223372036854775808

 Thread 24:: ImageBridgeChild
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   XUL                                 0x000000010df60988 0x10dc8e000 +
 2959752
 3   ???                                 0x8000000000000000 0 +
 9223372036854775808

 Thread 25:: ImgDecoder #1
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 ... (26-31 are all the same) ...

 Thread 32:: ImageIO
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 33:: IPDL Background
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 34:: DOM Worker
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c857fa
 _pthread_cond_wait + 712
 2   libnss3.dylib                       0x000000010db1dead PR_WaitCondVar
 + 253

 Thread 35:
 0   libsystem_kernel.dylib              0x00007fffa5b9234a mach_msg_trap +
 10
 1   libsystem_kernel.dylib              0x00007fffa5b91797 mach_msg + 55

 Thread 36:
 0   libsystem_kernel.dylib              0x00007fffa5b9a44e
 __workq_kernreturn + 10
 1   libsystem_pthread.dylib             0x00007fffa5c84621
 _pthread_wqthread + 1426
 2   libsystem_pthread.dylib             0x00007fffa5c8407d start_wqthread
 + 13

 ... (37-39 are all the same) ...

 Thread 40 Crashed:: Shutdow~minator
 0   XUL                                 0x000000010fd4bcbb 0x10dc8e000 +
 34331835

 Thread 41:: CVDisplayLink
 0   libsystem_kernel.dylib              0x00007fffa5b99bf2 __psynch_cvwait
 + 10
 1   libsystem_pthread.dylib             0x00007fffa5c85833
 _pthread_cond_wait + 769
 2   com.apple.CoreVideo                 0x00007fff919ad977
 CVDisplayLink::waitUntil(unsigned long long) + 233
 3   com.apple.CoreVideo                 0x00007fff919ad762
 CVDisplayLink::runIOThread() + 520
 4   libsystem_pthread.dylib             0x00007fffa5c8493b _pthread_body +
 180
 5   libsystem_pthread.dylib             0x00007fffa5c84887 _pthread_start
 + 286
 6   libsystem_pthread.dylib             0x00007fffa5c8408d thread_start +
 13

 Thread 40 crashed with X86 Thread State (64-bit):
   rax: 0x000000000000003f  rbx: 0x00006080000183c0  rcx:
 0x000000000000b979  rdx: 0x000000000000b978
   rdi: 0x000000010d765180  rsi: 0x0000000000000008  rbp:
 0x000000000000003f  rsp: 0x0000700003623eb0
    r8: 0x000061000017ca58   r9: 0x0000000000f0d02a  r10:
 0x000061000017ca60  r11: 0xffffffff00000000
   r12: 0x000000010db200b0  r13: 0x0000000000007d0b  r14:
 0x0000700003624000  r15: 0x00007fc7a0f5c450
   rip: 0x000000010fd4bcbb  rfl: 0x0000000000010246  cr2:
 0x0000000000000000

 Logical CPU:     0
 Error Code:      0x00000006
 Trap Number:     14
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22503>
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