1736527 - Crash in [@ OOM | large | xul.dll] - message with many image files causes high memory usage

Status: RESOLVED WORKSFORME

(Thunderbird :: General, defect)

Description

[Yaron Zabary]

Crash report: https://crash-stats.mozilla.org/report/index/f2afb7dd-b988-4706-9646-928b30211018

MOZ_CRASH Reason: MOZ_CRASH(OOM)

Top 10 frames of crashing thread:

0 xul.dll xul.dll@0x44249 
1 xul.dll xul.dll@0x801e1 
2 xul.dll xul.dll@0x68a32 
3 xul.dll xul.dll@0x23f6d02 
4 xul.dll xul.dll@0x23cafe0 
5 xul.dll xul.dll@0x24d6078 
6 xul.dll xul.dll@0x24621c4 
7 xul.dll xul.dll@0x2495841 
8 xul.dll xul.dll@0x24621a6 
9 xul.dll xul.dll@0x2508869 

Comment 1

[Yaron Zabary]

This crash happens when trying to view a specific message which have ~70 images. After clicking on the message thunderbird hangs for a few miutes before crashing. I can forward the message if that can help.

Comment 2

[Wayne Mery (:wsmwk)]

Does it also happen after doing Help > Troubleshoot mode?

You can forward the message (including headers) to me, and Ben at [e-mail]

Comment 3

[Yaron Zabary]

I tried with troubleshoot mode as well. By the way, I am able to read the message on Thunderbird 78.13.0 on Ubuntu 20.04 (which obviously doesn't have any AV software). I will forward the email.

Comment 4

[Yaron Zabary]

Attachment: badmessage.txt

Comment 5

[Wayne Mery (:wsmwk)]

The linux install is likely 64bit.

Have you tried the 64 bit WIndows build from https://www.thunderbird.net/en-US/thunderbird/all/ ?
Install in the same location as your current thunderbird program directory.
(bp-f2afb7dd-b988-4706-9646-928b30211018 is 32bit WIndows build)

Comment 6

[Yaron Zabary]

I installed 91.2.1 64 bit version and upgraded from 8Gb to 16Gb RAM. Thunderbird still chokes on this specific message (it can take a few minutes with TB being unresponsive and I cannot even access the menus). The memory upgrade stopped the crashes. I suspect that something in the message (an image or a link) is the problem. Or it might be related to TrendMicro AV which is taking time to scan the message (disabling the AV is not an option because this is mandatory in my organization). Have you tried reading the message and see if you can reproduce the problem?

Comment 7

[Wayne Mery (:wsmwk)]

32bit crashes for me https://crash-stats.thunderbird.net/report/bp-3b234843-c5d9-4c4d-b3a6-dd97e1220130
64bit on Mac and Windows does not crash for me.

So yes, something(s) in the message are causing high memory usage. 2-3GB to open/render it. But I played with the message - turning off LTR and right align seems to cut the render time by more than half, but did not noticeably reduce the memory usage.

FWIW the message is almost 80k lines, with 70 images and >700 cid: image references. I'd bet that is related to the memory usage. And ...

I removed the png files from the end of the message, amounting to ~30k lines, and the message renders almost immediately with no massive memory increase. Several users have reported crashes for messages with many images.

Comment 8

[Wayne Mery (:wsmwk)]

Yaron,
Does it happen for you with version 102?

Comment 9

[Wayne Mery (:wsmwk)]

Yaron reports "still using TB (on Windows 10 and Ubuntu 20.04, both on 102). I just checked with a similar message to those crashed my TB and it seems to be working OK."