Bug 349421 - During "quit" Ktorrent enters wait on "FUTEX" that never ends.
Summary: During "quit" Ktorrent enters wait on "FUTEX" that never ends.
Status: RESOLVED UNMAINTAINED
Alias: None
Product: ktorrent
Classification: Applications
Component: general (other bugs)
Version First Reported In: 4.3.1
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: ---
Assignee: Joris Guisson
URL: https://bugzilla.redhat.com/show_bug....
Keywords:
Depends on:
Blocks:
 
Reported: 2015-06-20 16:57 UTC by Roland Wolters
Modified: 2020-11-23 15:49 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


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Description Roland Wolters 2015-06-20 16:57:43 UTC
After running Ktorrent for a few hours, I attempted to select quit from the "file" menu. Ktorrent accepts the quit but enters a seemingly endless wait in "FUTEX" processing (that's what ps says for "Wchan". I have an strace file for this situation if it's needed.

Reproducible: Sometimes

Steps to Reproduce:
1. start ktorrent and let it run an unknown period of time
2. attach strace -xvfp <ktorrent pid> and then drag down "file" and release on "quit"
3. ktorrent frequently gets stuck with "WCHAN" listed as "FUTEX"

Actual Results:  
Ktorrent gets stuck.

Expected Results:  
Ktorrent should close.

The filesystem containing .kde is at 100%.

Besides, these messages are printed:

Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso backend 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso to connect to. Aborting 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso backend 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso to connect to. Aborting 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso backend 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso to connect to. Aborting 
Critical: ktorrent(19310)/nepomuk (library): Could not find virtuoso backend

The output of "gdb -p <pid of ktorrent>" available and the output of "strace -xvfp <pid of ktorrent>" can be provided if necessary.
Comment 1 Justin Zobel 2020-10-30 06:19:53 UTC
I cannot reproduce on this on ktorrent from git master.

Can you pleas retest Roland and let us know if this is still an issue, thanks.
Comment 2 Bug Janitor Service 2020-11-14 04:33:48 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
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If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Roland Wolters 2020-11-23 15:49:13 UTC
This bug depended on a downstream Linux distribution version which is EOL. Closing.