434559 - "ASSERTION: leaking stream event: 'Not Reached'"

Status: RESOLVED INCOMPLETE

(Core :: Networking, defect)

Description

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

I hit this assertion very unreliably, but probably a couple of times a week or so. I'm not sure how to come up with a reduced testcase for this unreliable assertion.

Here's the gdb backtrace:

###!!! ASSERTION: leaking stream event: 'Not Reached', file /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp, line 163

Program received signal SIGTRAP, Trace/breakpoint trap.
0x900720ea in __kill ()
(gdb) bt
#0  0x900720ea in __kill ()
#1  0x900720dd in kill$UNIX2003 ()
#2  0x900e93f2 in raise ()
#3  0x003b4de3 in Break (aMsg=0xbfffe50c "###!!! ASSERTION: leaking stream event: 'Not Reached', file /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp, line 163") at /Users/gk/gecko19-cvs/mozilla/xpcom/base/nsDebugImpl.cpp:474
#4  0x003b5118 in NS_DebugBreak_P (aSeverity=1, aStr=0x3f319c "leaking stream event", aExpr=0x3f1f14 "Not Reached", aFile=0x3f30d0 "/Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp", aLine=163) at /Users/gk/gecko19-cvs/mozilla/xpcom/base/nsDebugImpl.cpp:358
#5  0x003744a0 in nsOutputStreamReadyEvent::~nsOutputStreamReadyEvent (this=0x189b0f60) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp:163
#6  0x0037451d in nsOutputStreamReadyEvent::~nsOutputStreamReadyEvent (this=0x189b0f60) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp:169
#7  0x00372ee8 in nsOutputStreamReadyEvent::Release (this=0x189b0f60) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp:202
#8  0x00371b8e in nsCOMPtr<nsIOutputStreamCallback>::assign_assuming_AddRef (this=0xbfffeaec, newPtr=0x0) at nsCOMPtr.h:568
#9  0x00371bc0 in nsCOMPtr<nsIOutputStreamCallback>::assign_with_AddRef (this=0xbfffeaec, rawPtr=0x0) at nsCOMPtr.h:1267
#10 0x00371ee0 in nsCOMPtr<nsIOutputStreamCallback>::operator= (this=0xbfffeaec, rhs=0x0) at nsCOMPtr.h:713
#11 0x0036fc58 in nsPipeEvents::~nsPipeEvents (this=0xbfffeae0) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsPipe3.cpp:618
#12 0x0036fcbb in nsPipeEvents::~nsPipeEvents (this=0xbfffeae0) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsPipe3.cpp:621
#13 0x0037016f in nsPipe::OnPipeException (this=0x1c9c3e70, reason=2147500037, outputOnly=0) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsPipe3.cpp:600
#14 0x00370253 in nsPipeInputStream::CloseWithStatus (this=0x1c9c3e7c, reason=2147500037) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsPipe3.cpp:728
#15 0x012ddac1 in nsInputStreamPump::Cancel (this=0x1c518910, status=2147500037) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsInputStreamPump.cpp:215
#16 0x013a9e73 in nsHttpChannel::Cancel (this=0x141eab10, status=2147500037) at /Users/gk/gecko19-cvs/mozilla/netwerk/protocol/http/src/nsHttpChannel.cpp:3425
#17 0x1b44ed4f in nsPluginStreamListenerPeer::OnDataAvailable (this=0x1b098480, request=0x141eab40, aContext=0x0, aIStream=0x16800ea0, sourceOffset=6228118, aLength=65536) at /Users/gk/gecko19-cvs/mozilla/modules/plugin/base/src/nsPluginHostImpl.cpp:2307
#18 0x01310dec in nsStreamListenerTee::OnDataAvailable (this=0x16819790, request=0x141eab40, context=0x0, input=0x1c9c3e7c, offset=6228118, count=65536) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsStreamListenerTee.cpp:97
#19 0x013aa210 in nsHttpChannel::OnDataAvailable (this=0x141eab10, request=0x1c518910, ctxt=0x0, input=0x1c9c3e7c, offset=6228118, count=65536) at /Users/gk/gecko19-cvs/mozilla/netwerk/protocol/http/src/nsHttpChannel.cpp:4522
#20 0x012dddef in nsInputStreamPump::OnStateTransfer (this=0x1c518910) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsInputStreamPump.cpp:508
#21 0x012de8f8 in nsInputStreamPump::OnInputStreamReady (this=0x1c518910, stream=0x1c9c3e7c) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsInputStreamPump.cpp:398
#22 0x00373bba in nsInputStreamReadyEvent::Run (this=0x189b8320) at /Users/gk/gecko19-cvs/mozilla/xpcom/io/nsStreamUtils.cpp:111
#23 0x003a5dbe in nsThread::ProcessNextEvent (this=0x60f100, mayWait=1, result=0xbfffef2c) at /Users/gk/gecko19-cvs/mozilla/xpcom/threads/nsThread.cpp:510
#24 0x00330d76 in NS_ProcessNextEvent_P (thread=0x60f100, mayWait=1) at nsThreadUtils.cpp:227
#25 0x003a6455 in nsThread::Shutdown (this=0x61e760) at /Users/gk/gecko19-cvs/mozilla/xpcom/threads/nsThread.cpp:465
#26 0x0130d636 in nsSocketTransportService::Shutdown (this=0x844c00) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsSocketTransportService2.cpp:445
#27 0x012e309f in nsIOService::SetOffline (this=0x61e4b0, offline=1) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsIOService.cpp:617
#28 0x012e4e17 in nsIOService::Observe (this=0x61e4b0, subject=0x1acf52e0, topic=0x13f787 "profile-change-net-teardown", data=0x153b40) at /Users/gk/gecko19-cvs/mozilla/netwerk/base/src/nsIOService.cpp:774
#29 0x00346add in nsObserverList::NotifyObservers (this=0xa55ca4, aSubject=0x1acf52e0, aTopic=0x13f787 "profile-change-net-teardown", someData=0x153b40) at /Users/gk/gecko19-cvs/mozilla/xpcom/ds/nsObserverList.cpp:128
#30 0x0034812c in nsObserverService::NotifyObservers (this=0x61eec0, aSubject=0x1acf52e0, aTopic=0x13f787 "profile-change-net-teardown", someData=0x153b40) at /Users/gk/gecko19-cvs/mozilla/xpcom/ds/nsObserverService.cpp:181
#31 0x0010346a in nsXREDirProvider::DoShutdown (this=0xbffff47c) at /Users/gk/gecko19-cvs/mozilla/toolkit/xre/nsXREDirProvider.cpp:837
#32 0x000ecd4f in ScopedXPCOMStartup::~ScopedXPCOMStartup (this=0xbffff51c) at /Users/gk/gecko19-cvs/mozilla/toolkit/xre/nsAppRunner.cpp:905
#33 0x000ecdaf in ScopedXPCOMStartup::~ScopedXPCOMStartup (this=0xbffff51c) at /Users/gk/gecko19-cvs/mozilla/toolkit/xre/nsAppRunner.cpp:912
#34 0x000f4619 in XRE_main (argc=2, argv=0xbffff81c, aAppData=0x60df10) at /Users/gk/gecko19-cvs/mozilla/toolkit/xre/nsAppRunner.cpp:3211
#35 0x000026d3 in main (argc=2, argv=0xbffff81c) at /Users/gk/gecko19-cvs/mozilla/browser/app/nsBrowserApp.cpp:158
(gdb)

Comment 1

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Related to bug 224783?

Comment 2

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Attachment: The full |bt full| data trace

This is the full |bt full| trace.

Comment 3

[Carsten Book [:Tomcat]]

Note, i have hit this Assertion during Automated Global Topsite Tests and got a Memory Leak Report (Bug 467782)

Comment 4

[Boris Zbarsky [:bzbarsky]]

Note that the code comment says that this can happen if the target thread is dead and that it's better to leak than crash in that case...

Comment 5

[Boris Zbarsky [:bzbarsky]]

I do assume people here see the "PostEvent failed" warning right before the assert, right?

Comment 6

[Jesse Ruderman]

When I hit this assertion, I do see the "PostEvent failed" warning right before it.