242886 - Mozilla Mail freezes and starts using 100% CPU when I try to display Trash folder

Status: RESOLVED FIXED

(MailNews Core :: Database, defect)

Description

[Jure Repinc (JLP)]

I'm using Mozilla nightly 20040506 on Windows XP Pro with SP1.
When I try to open my Trash folder Mozilla just freezes and it starts using 100%
of CPU (I have AMD Athlon 64 3000+). When I try to close the Mail window Windows
then displays a message that Mozilla crashes. In details it says it crashed in:

szAppName : mozilla.exe     szAppVer : 1.8.20040.50609     
szModName : msgbase.dll     szModVer : 0.0.0.0     offset : 0002a3b6

or:

szAppName : mozilla.exe     szAppVer : 1.8.20040.50609     szModName : msgdb.dll
szModVer : 1.8.20040.50609     offset : 000035c2

I tried this several times and it always freezes and crashes on exit.

Comment 1

[Jure Repinc (JLP)]

Attachment: My Trash folder

This is the ZIP archive of my Trash and Trash.msf.

Comment 2

[Jure Repinc (JLP)]

It looks like this happens when Mozilla automatically deletes a spam e-mail
message as I only have spam in my Trash. I have set Mozilla to delete junk mail
after 14 days.

Comment 3

[Christian Eyrich]

Connected to bug 242928?

Did you have problems with older builds?

Comment 4

[David :Bienvenu]

thx very much for the trash folder and .msf file - I've recreated the problem
and have a fix for the hang...This is a long-standing problem, I believe - I
doubt it's a recent regression, and it's not related to bug 242928

What's happening is that a msg hdr is getting into the db that is its own parent
- that's a bozo no-no. I'll attach a patch that fixes the view code to handle
this more gracefully, but I also need to figure out how the db got corrupted in
the first place.

Comment 5

[David :Bienvenu]

Attachment: proposed fix for hang

Comment 6

[David :Bienvenu]

cc'ing Neil, who might be changing related code as we speak. I'll go find out
what's going on in the db now.

Comment 7

[David :Bienvenu]

ok, the fix for the hang is checked in. Now I need to see how the thread/db gets
corrupted in the first place. But, Jure, you should be able to use tomorrow's
trunk build.

Comment 8

[Jure Repinc (JLP)]

Thanks for the very quick bug fixing. I'll check it out tomorrow. I would like
to help with finding the cause of corruption but I really don't know how. I only
know that something maybe went wrong somwhere in the proces of marking a message
as spam, then moving it automatically to Junk folder (I also can't open that as
Mozilla also hangs so I guess there are also some corrupted messages in here)
and finaly moving them automatically to Trash folder as they were more then 14
days old.

Comment 9

[David :Bienvenu]

marking fixed, but I'll still look at the corruption and try to figure out how
it happened.

Comment 10

[Jure Repinc (JLP)]

I just installed nightly 2004050808  and it opens both folders just fine without
freezing. I hope you will manage to find out what corrupted them in the first
place. Thanks again.