610709 - spike in crashes [@ PR_AtomicDecrement ] causes by java plugin [@ npjp2.dll@0x23d9 ]

Status: RESOLVED INCOMPLETE

(Core Graveyard :: Plug-ins, defect)

Description

[Scoobidiver (away)]

Build: Mozilla/5.0 (Windows NT 6.1; rv:2.0b8pre) Gecko/20101108 Firefox/4.0b8pre

From this build, there is a spike in crashes. They are all due to java plugin. Various versions of java are implied from 1.6.18 to 1.6.22.
It is #8 top crasher in this build.

Signature	PR_AtomicDecrement
UUID	ce9183d4-625a-4028-9312-fc07a2101109
Time 	2010-11-09 04:42:51.478819
Uptime	3219
Install Age	119322 seconds (1.4 days) since version was first installed.
Product	Firefox
Version	4.0b8pre
Build ID	20101108043306
Branch	2.0
OS	Windows NT
OS Version	6.1.7600
CPU	x86
CPU Info	GenuineIntel family 6 model 30 stepping 5
Crash Reason	EXCEPTION_ACCESS_VIOLATION_WRITE
Crash Address	0x7a4cf64f
App Notes 	AdapterVendorID: 10de, AdapterDeviceID: 0641

Frame 	Module 	Signature [Expand] 	Source
0 	nspr4.dll 	PR_AtomicDecrement 	nsprpub/pr/src/misc/pratom.c:312
1 	xul.dll 	mozilla::plugins::parent::_releaseobject 	modules/plugin/base/src/nsNPAPIPlugin.cpp:1534
2 	npjp2.dll 	npjp2.dll@0x23d9 	
3 	xul.dll 	DoStopPlugin 	layout/generic/nsObjectFrame.cpp:2456
4 	xul.dll 	nsStopPluginRunnable::Run 	layout/generic/nsObjectFrame.cpp:2505
5 	xul.dll 	nsThread::ProcessNextEvent 	xpcom/threads/nsThread.cpp:609
6 	xul.dll 	mozilla::ipc::MessagePump::Run 	ipc/glue/MessagePump.cpp:110
7 	xul.dll 	xul.dll@0xb0a9fb 	
8 	xul.dll 	MessageLoop::RunHandler 	ipc/chromium/src/base/message_loop.cc:202
9 	xul.dll 	_SEH_epilog4 	
10 	xul.dll 	MessageLoop::Run 	ipc/chromium/src/base/message_loop.cc:176
11 	xul.dll 	nsBaseAppShell::Run 	widget/src/xpwidgets/nsBaseAppShell.cpp:181
12 	xul.dll 	xul.dll@0xb0a9fb 	
13 	xul.dll 	nsAppShell::Run 	widget/src/windows/nsAppShell.cpp:243

The regression range for the spike is:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=8cbe83542596&tochange=a0826dcd6228

More reports at:
http://crash-stats.mozilla.com/report/list?range_value=4&range_unit=weeks&signature=PR_AtomicDecrement&version=Firefox%3A4.0b8pre

Comment 1

[Johnny Stenback (:jst)]

I just had a quick look and the crashes seemed pretty spread out, some were plugin crashes, others were unrelated crashes. I filed bug 616387 on making crashes that happen in PR_Atomic(In,De)crement easier to separate out from each other.

Is there any evidence that this spike is still going, or was this due to a problem on a specific site or a specific nightly build?

Comment 2

[Scoobidiver (away)]

> Is there any evidence that this spike is still going, or was this due to a
> problem on a specific site or a specific nightly build?
Go to Graph tab in the report list of comment 0 to see the crash count evolution by buildday.
It was a temporarily spike that last about 2 weeks and ended in 4.0b8pre/20101116 build.

Comment 3

[Marcia Knous [:marcia]]

http://tinyurl.com/3yxwdvr indicates there were 69 crashes on the trunk in the last week.

Comment 4

[Benjamin Smedberg]

This is too generic to be helpful. PR_AtomicDecrement is being added to the skiplist, and we'll get better signatures then which might be actionable.