Firefox 3.6 rc1 Crash [@ MOZ_PNG_write_sig ]




9 years ago
5 years ago


(Reporter: chofmann, Assigned: glennrp+bmo)



Windows XP

Firefox Tracking Flags

(Not tracked)


(crash signature)



9 years ago
there is a new crash in 3.6 rc1 that wasn't seen by 600,000 3.6b5 testers.

in early 3.6 rc1 data its currently ranked #24

stack looks like

Frame  	Module  	Signature [Expand]  	Source
0 	xul.dll 	MOZ_PNG_write_sig 	modules/libimg/png/pngwutil.c:68
1 	xul.dll 	MOZ_PNG_write_info_before_PLTE 	modules/libimg/png/pngwrite.c:33
2 	xul.dll 	MOZ_PNG_write_info 	modules/libimg/png/pngwrite.c:138
3 	xul.dll 	nsPNGEncoder::StartImageEncode 	modules/libpr0n/encoders/png/nsPNGEncoder.cpp:191
4 	xul.dll 	nsPNGEncoder::InitFromData 	modules/libpr0n/encoders/png/nsPNGEncoder.cpp:89
5 	xul.dll 	imgTools::EncodeScaledImage 	modules/libpr0n/src/imgTools.cpp:345
6 	xul.dll 	nsFaviconService::OptimizeFaviconImage 	toolkit/components/places/src/nsFaviconService.cpp:1118
7 	xul.dll 	nsFaviconService::SetFaviconData 	toolkit/components/places/src/nsFaviconService.cpp:711
8 	xul.dll 	FaviconLoadListener::OnStopRequest 	toolkit/components/places/src/nsFaviconService.cpp:1276
9 	xul.dll 	nsHTTPCompressConv::OnStopRequest 	netwerk/streamconv/converters/nsHTTPCompressConv.cpp:127
10 	xul.dll 	nsHttpChannel::OnStopRequest 	netwerk/protocol/http/src/nsHttpChannel.cpp:5279
11 	xul.dll 	nsInputStreamPump::OnStateStop 	netwerk/base/src/nsInputStreamPump.cpp:576
12 	xul.dll 	nsInputStreamPump::OnInputStreamReady 	netwerk/base/src/nsInputStreamPump.cpp:401
13 	xul.dll 	nsOutputStreamReadyEvent::Run 	xpcom/io/nsStreamUtils.cpp:191
14 	xul.dll 	nsThread::ProcessNextEvent 	xpcom/threads/nsThread.cpp:527
15 	xul.dll 	nsBaseAppShell::Run 	widget/src/xpwidgets/nsBaseAppShell.cpp:170
16 	xul.dll 	nsAppStartup::Run 	toolkit/components/startup/src/nsAppStartup.cpp:182
17 	nspr4.dll 	PR_GetEnv 	
18 	firefox.exe 	wmain 	toolkit/xre/nsWindowsWMain.cpp:120
19 	firefox.exe 	__tmainCRTStartup 	obj-firefox/memory/jemalloc/crtsrc/crtexe.c:591
20 	kernel32.dll 	BaseProcessStart

more reports at

not much to go on to start the investigation.

looks pretty close to start up, and is probably one or just a few people contributing crash reports.

os breakdown
17      1       Windows NT5.1.2600 Service Pack 2

and all the reports were within the same hour

the png and image code doesn't appear to have changes for quite awhile, but maybe the network code under it changed recently.

Comment 1

9 years ago
guessing this will get buried in the ranking quickly, but we should keep an eye out.


9 years ago
Assignee: nobody → glennrp+bmo

Comment 2

9 years ago
Are these crashes still occurring? The "more reports" above link talks about
Windows SP2 and the "platform" field above says MacOS.  I've taken the bug
because it's PNG, but maybe PNG was an innocent bystander here.

Comment 3

9 years ago
only two reports of this signature feb 1-15

Firefox	3.6  Windows NT	6.0.6002

Firefox	3.5.7 Windows NT	5.1.2600

I filed the bug while analyzing the crash data on my mac.  corrected that now.
OS: Mac OS X → Windows XP
Crash Signature: [@ MOZ_PNG_write_sig ]

Comment 4

5 years ago
Not enough to go on here. Resolving INCOMPLETE.  It's possible that the bug still exists but leaves a different signature now.
Last Resolved: 5 years ago
Resolution: --- → INCOMPLETE
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