311893 - Browser crash after back [@ 0x00000000]

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[John Elvin]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.12) Gecko/20050919 Firefox/1.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.12) Gecko/20050919 Firefox/1.0.7

After visting a page which obtains & displays information about the browser,
using the back button crashes the browser (triggers feedback wizard).

100% reproducible - friend has reproduced both on Firefox and Mozilla

Reproducible: Always

Steps to Reproduce:
1. Go to http://www.kitz.co.uk/tech/tech.htm
2. Select "Browser Sys Info/Browser Sys Info" from LHS menu
3. When all info displayed click back.

Actual Results:  
Browser crashed

Expected Results:  
Previous page displayed

Comment 1

[Ria Klaassen (not reading all bugmail)]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b5) Gecko/20051010
Firefox/1.4.1 ID:2005101001

On branch I get only a crash when I click Back before the page is fully loaded.
TB10468003Y  TB10467961Y  TB10467909X
Could not reproduce it in trunk.

Comment 2

[Ria Klaassen (not reading all bugmail)]

It looks like the applet doesn't load at all in trunk.

Comment 3

[timeless]

unfortunately there's no stack, someone w/ symbols for firefox would have to use
windbg to get a useful stack trace.

Comment 4

[Zook Valem]

Don't have a Gecko browsers on this local machine at college so I looked it up 
in IE and I noticed that the Java applet get loaded.  So, when I pressed the 
back button to see how the web page would react and all I noticed is that it 
doesn't go back one page but act like the web page had reload back to the same 
page.  So, will tried it with Seamonkey sometime this week.

Comment 5

[chris hofmann]

it appears that "Browser Sys Info/Browser Sys Info"  is now gone from the left side menu.  anyone still see crashes or got a test case for this?

Comment 6

[John Elvin]

The page is still available. Go to http://www.kitz.co.uk/security/security.htm

Expand Security scans in the left menu. Select Browser Sys Info.

... and yes it still crashes.

Comment 7

[chris hofmann]

I wasn't able to see the crash using Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.2) Gecko/20060313 Firefox/1.5.0.2 

wondering what versions of branch and trunk where this might still exist?

Comment 8

[John Elvin]

Bug reproduces on 1.5.0.1

Comment 9

[chris hofmann]

marica tested on mac and found crashes on 1.5.0.1 but not on 1.5.0.2 so maybe this got fixed as a side effect patching another bug...

can someone put the stack trace in the bug when they can reproduce so we can trace to what patch might have fixed it?

Comment 10

[chris hofmann]

I still can't reproduce the crash loading
http://www.kitz.co.uk/security/security.htm
and then hitting back button several times after the page loads.

going back to fx 1.5
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Comment 11

[Wayne Mery (:wsmwk)]

I'm unsure how to adequately test this - the last click results in new tab being opened.  STR:
1. http://www.kitz.co.uk/tech/tech.htm
2. click "browsers" on the left
3. click "Browser Sys Info/Browser Sys Info"

direct link to the offending page is http://www.kitz.co.uk/security/browserinfo.htm

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b2pre) Gecko/2007112605 Minefield/3.0b2pre

Comment 12

[John Elvin]

Kitz has changed the way the pages are linked which has made testing to see if the fault still exists more difficult. It also puts multiple entries on the go back stack which again changes things.

I've tried the following to keep it in the same window:

1. Go to any webpage
2. Paste http://www.kitz.co.uk/security/browserinfo.htm in to the address bar to get the page displayed.
3. Then go back.

I've not hit any problems so the problem *may* be fixed.

I'm currently using 2.0.0.11

Comment 13

[Kevin Brosnan]

WFM with steps given in comment 12 - Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9b3pre) Gecko/2007121205 Minefield/3.0b3pre and Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11

Comment 14

[Wayne Mery (:wsmwk)]

comment 12 also WFM  (alternative is incomplete as original testcase is missing)