664630 - Mutex about:blank leak

Status: RESOLVED DUPLICATE of bug 653936

(Core :: General, defect)

Description

[Andrew McCreight [:mccr8]]

On a recent Mozilla-Central, when setting XPCOM_MEM_LEAK_LOG=leaklog.txt, loading about:blank and then shutting down the browser within say 5 seconds gives me this in the leak log:

     |<----------------Class--------------->|<-----Bytes------>|<----------------Objects---------------->|<--------------References-------------->|
                                              Per-Inst   Leaked    Total      Rem      Mean       StdDev     Total      Rem      Mean       StdDev
   0 TOTAL                                          36      416   220067        6 ( 1739.29 +/-  2779.26)   599137        2 ( 1800.12 +/-  3379.56)
  82 Mutex                                          24       48      223        2 (   61.34 +/-    21.75)        0        0 (    0.00 +/-     0.00)
 105 ReentrantMonitor                               32       32       91        1 (   26.89 +/-    13.50)        0        0 (    0.00 +/-     0.00)
 590 nsTArray_base                                   8        8    21478        1 ( 6763.06 +/-  3480.13)        0        0 (    0.00 +/-     0.00)
 597 nsThread                                      224      224        8        1 (    3.73 +/-     1.67)      410        1 (   50.26 +/-    21.41)
 601 nsTimerImpl                                   104      104       47        1 (   15.49 +/-     6.38)      257        1 (   34.16 +/-    11.74)

If I don't do anything and let it sit there for a minute or so, then when I shut down, eventhing but the Mutexes is cleared out.

For me, this happens 100% of the time.  Jesse said he was seeing things like this, but only sometimes.