500936 - top crash [@ js_MonitorLoopEdge(JSContext*, unsigned int&)]

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[Samuel Sidler (old account; do not CC)]

This bug is to track the remaining topcrash (probably top 25, but not #1) from bug 499169 that happens with a stack signature of js_MonitorLoopEdge(JSContext*, unsigned int&).

In bug 499169, we fixed the #1 topcrash with this signature. However there is still a lingering crash with this signature that we should investigate.

Currently, this signature is #10 overall for Firefox 3.5 and dropping, as users move to RC3.

The stack looks the same as bug 499169. This is taken from bp-245f389e-4398-48c4-b46d-c7f142090627:

Crashing Thread
Frame 	Module 	Signature [Expand] 	Source
0 		@0xf959950 	
1 		@0x12dc7b 	
2 	js3250.dll 	js_MonitorLoopEdge 	js/src/jstracer.cpp:4862
3 	js3250.dll 	js_Interpret 	js/src/jsinterp.cpp:3308 

It's unclear where this crash will be in the topcrash list, but it *certainly* won't be #1 and will probably end closer to #20, if I'm following the trends right.

Some comments:

> When firebug is open, and the browser is refreshed there is a high chance of
> a crash

> submitting froms crashed FX again

> what's up with GMail checkboxes issues?! O_O

> I was just checking boxes in gmail too fast O.o

> I refresh a page that I just made a HTML edit to and the browser crashes.

> checkboxes in GMail seems to explode with the browser if you would irritate 
> them with very fast clicks =D

> После инспекта страницы фаербагом, Fx рухнул.
Which roughly translates to:
> After inspecting pages, Fx crashed.

From the few comments we have, most people seem to be crashing when using Gmail and forms.

Comment 2

[Samuel Sidler (old account; do not CC)]

gal: Can I assign this to you since you worked on and investigated bug 499169?

Comment 3

[Samuel Sidler (old account; do not CC)]

(This crash is currently #37 on the topcrash list for Firefox 3.5.)

Comment 4

[Andreas Gal :gal]

I will need urls and some help reproducing if we want to fix this one.

Comment 5

[Andreas Gal :gal]

Are we sure this is still active with the fixes we have lined up for 3.5.1?

Comment 6

[Bob Clary [:bc] (inactive)]

I haven't been able to reproduce this with the crash urls for Firefox 3.5 from 2009-07-01. crash-stats doesn't have a report for 3.5.1pre afaict.

Comment 7

[Andreas Gal :gal]

Well if the bug is fixed, I will gladly take possession of the dead corpse =)

Comment 8

[Bob Clary [:bc] (inactive)]

eew!

Comment 9

[Samuel Sidler (old account; do not CC)]

(In reply to comment #6)
> I haven't been able to reproduce this with the crash urls for Firefox 3.5 from
> 2009-07-01. crash-stats doesn't have a report for 3.5.1pre afaict.

Just because it doesn't show in the list doesn't mean you can't query for it, just have to modify the URL: http://crash-stats.mozilla.com/query/query?do_query=1&product=Firefox&version=Firefox%3A3.5.1pre&date=&range_value=1&range_unit=weeks&query_search=signature&query_type=exact&query=

Comment 10

[JDev]

(In reply to comment #6)
> I haven't been able to reproduce this with the crash urls for Firefox 3.5 from
> 2009-07-01. crash-stats doesn't have a report for 3.5.1pre afaict.

Url isn't important from my experience with this bug.  Try the reports from bug 502053.  What I've seen is that it's related to reloading/reflow of the page in some way.  After using Firebug (inspect maybe related, not positive) if I click reload it crashes, if I go to the address bar and hit enter (as new request) no crash occurs.

Comment 11

[Martin Nicholls]

I can pretty much reproduce this on demand using Firebug in 3.5 and 3.5.1pre (20090714052038) -

At https://cp.10tb.com/ if you inspect the page (with firebug) and change elements id or heights or something and hit refresh, it crashes in both versions.

I'm sure I've seen it crash without messing around in firebug, but it's a good way of producing the same error.

7cdaab70-6ae0-4f92-825d-edb9d2090714
e9b3ff11-4cf5-478d-8292-3df0e2090714
4d945dbd-d161-4ca0-ba05-2be0a2090714

Are just some of mine.

Comment 12

[Andreas Gal :gal]

I will give the instructions a try. Thanks Martin.

Comment 13

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

A (potential) testcase might be at bug 503620, it's already turned security-sensitive.

Comment 14

[Andreas Gal :gal]

Gary, is this a dup of 503620?

Comment 15

[Andreas Gal :gal]

I am just going to be paranoid here.

Comment 16

[cmtalbert]

ss: are we planning to take this on a 1.9.1.x build?  I see it says needed up there.  I have a contributor who says he can reproduce this (but there's no telling if he's got the same crash or just another jit crash).  He's going to email me a reduced test case which I'll attach here if I get it.

Comment 17

[Samuel Sidler (old account; do not CC)]

Clint: If we get a patch, we definitely want to take this for 1.9.1.x. The patch in bug 503080 (which fixes the testcase in bug 503620) is rather large and not targeted and likely not suitable for 1.9.1.x.

Comment 18

[Stephen Donner [:stephend] Not actively reading bugmail]

I can reproduce by:

1. Loading http://www.comcast.net
2. Acknowledging the "incompatible browser" warning
3. Clicking on any of the "Top Videos"

Report here: http://crash-stats.mozilla.com/report/index/bp-0d8021c0-68d1-45d3-9854-ac71e2090821

Build ID: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20090820 Minefield/3.7a1pre (.NET CLR 3.5.30729)

Comment 19

[Stephen Donner [:stephend] Not actively reading bugmail]

FWIW, the same steps in comment 18 are crashing me on the 1.9.2 branch, but in a different stack (js_Invoke); filed that as bug 511831.

Comment 20

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Stephen, I cannot get it to crash. Would you be able to get a stack trace with windbg for both of the crashes? See https://developer.mozilla.org/en/How_to_get_a_stacktrace_with_WinDbg

Comment 21

[Stephen Donner [:stephend] Not actively reading bugmail]

No.

Comment 22

[Stephen Donner [:stephend] Not actively reading bugmail]

Attachment: Win32 debug file log (WinDbg)

Comment 23

[Stephen Donner [:stephend] Not actively reading bugmail]

Sorry for my terse comment 21; I hope the WinDbg output in comment 22 is helpful; I also have it in my VM as a save/restore point, for others to look at in the office on Monday.

Comment 24

[Andreas Gal :gal]

Can you grab me monday? I would like to see the save/restore point.

Comment 25

[Stephen Donner [:stephend] Not actively reading bugmail]

(In reply to comment #24)
> Can you grab me monday? I would like to see the save/restore point.

Sure.

Comment 26

[Samuel Sidler (old account; do not CC)]

Any update here?

Comment 27

[Daniel Veditz [:dveditz]]

No longer in the top 100, but still 400+ crashes a week.

Comment 28

[Brandon Sterne (:bsterne)]

Cannot reproduce using Stephen's comment 18 steps.  Tried using Firefox 3.6, Firefox 3.5.7, and trunk debug build on Windows.  Crash-stats still shows 93 crashes in the past week.  Stephen, can you still reproduce this?

We're crashing calling nearly random addresses.  Setting to critical for now...

Comment 29

[Stephen Donner [:stephend] Not actively reading bugmail]

(In reply to comment #28)
> Cannot reproduce using Stephen's comment 18 steps.  Tried using Firefox 3.6,
> Firefox 3.5.7, and trunk debug build on Windows.  Crash-stats still shows 93
> crashes in the past week.  Stephen, can you still reproduce this?
> 
> We're crashing calling nearly random addresses.  Setting to critical for now...

Hey Brandon; sorry, I can't reproduce any longer.  iirc, when I showed this to Andreas, he saw the crash but said he thought it was another bug that was going to get fixed soon (and apparently it did).