Bug 348783

Summary:	kmail hanged in a busy loop
Product:	[Applications] kmail2	Reporter:	Lastique <andysem>
Component:	general	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED UNMAINTAINED
Severity:	normal
Priority:	NOR
Version:	4.14.7
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	kmail backtrace 1 kmail backtrace 2 kmail backtrace 3 kmail backtrace 4

Description Lastique 2015-06-06 12:18:09 UTC

I was typing a reply to an email, then I temporarily switched to another window and when I switched back kmail was no longer responsive. The kmail process was constantly consuming 100% of a CPU core and 2.7 GB of RAM - that is compared to around 180 MB that it consumes right after start.

I have two IMAP email accounts attached, one of the akonadi_imap_resource processes was consuming 1.7 GB of RAM during the incident, but was mostly idle on CPU. The memory consumption did not go down after I restarted kmail.

I got a few stacktraces from the kmail process as it was hanging (attached). I'm not sure what was the trigger for this behavior. This happened only once so far.


Reproducible: Sometimes




Kubuntu 15.04, x86_64. KDE Frameworks and SC installed from Kubuntu backports.

Comment 1 Lastique 2015-06-06 12:18:32 UTC

Created attachment 93036 [details]
kmail backtrace 1

Comment 2 Lastique 2015-06-06 12:19:02 UTC

Created attachment 93037 [details]
kmail backtrace 2

Comment 3 Lastique 2015-06-06 12:19:19 UTC

Created attachment 93038 [details]
kmail backtrace 3

Comment 4 Lastique 2015-06-06 12:19:39 UTC

Created attachment 93039 [details]
kmail backtrace 4

Comment 5 Denis Kurz 2017-06-23 20:05:25 UTC

This bug has never been confirmed for a KDE PIM version that is based on KDE Frameworks (5.x). Those versions differ significantly from the old 4.x series. Therefore, I plan to close it in around two or three months. In the meantime, it is set to WAITINGFORINFO to give reporters the oportunity to check if it is still valid. As soon as someone confirms it for a recent version (at least 5.1, ideally even more recent), I'll gladly reopen it.

Please understand that we lack the manpower to triage bugs reported for versions almost two years beyond their end of life.

Comment 6 Denis Kurz 2018-01-31 16:51:59 UTC

Just as announced in my last comment, I close this bug. If you encounter it again in a recent version (at least 5.1 aka 15.12, preferably more recent), please open a new one unless it already exists. Thank you for all your input.