Bug 443483

Summary:	baloo_file Segfaults With Extended Session
Product:	[Frameworks and Libraries] frameworks-baloo	Reporter:	ltstarwarskid
Component:	Baloo File Daemon	Assignee:	baloo-bugs-null
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	nicolas.fella, tagwerk19
Priority:	NOR
Version First Reported In:	5.86.0
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	drkonqi crash report file

Description ltstarwarskid 2021-10-08 15:54:04 UTC

Created attachment 142257 [details]
drkonqi crash report file

SUMMARY
baloo_file can segfault during background operations during system idle time. Note that this throws different traces than bug 443226, previously reported crash by me for baloo_file, but generates different signal and has different trace. Uncertain if it is related or not. If it is a duplicate, can repost this different trace in that bug instead.

STEPS TO REPRODUCE
1. Leave computer unattended for extended period of time (amount unknown)

OBSERVED RESULT
baloo_file segfaults.

EXPECTED RESULT
baloo_file does not segfault.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Ubuntu 21.04

KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Hardware:
CPU: Ryzen 3950X
GPU: AMD 5700 XT
RAM: 32GB ECC 3200 MHz, JDEC default timings
Motherboard: ASrock x570 Creator
OS Drive: Corsair Force Series MP600 2TB NVMe

Note, system is dual boot with Win10.

baloo-kf5/hirsute,now 5.86.0-0ubuntu1~ubuntu21.04~ppa1

System is set up to get updates from the kbuntu updates and backports PPAs.

Backtrace:
Application: baloo_file (baloo_file), signal: Segmentation fault

[KCrash Handler]
#4  QString::QString (other=..., this=<optimized out>, this=<optimized out>, other=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:1093
#5  QList<QString>::node_copy (src=0x55820a5ef588, to=0x7f9ba9e67480 <QListData::shared_null+16>, from=<optimized out>, this=0x558202c0a650) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:505
#6  QList<QString>::detach_helper_grow(int, int) [clone .constprop.0] (this=0x558202c0a650, c=c@entry=1, i=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:813
#7  0x0000558201e7b9dc in QList<QString>::append (this=<optimized out>, t=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:623
#8  0x0000558201e82b31 in Baloo::FileContentIndexer::slotFinishedIndexingFile (this=0x558202c0a610, filePath=..., fileUpdated=<optimized out>) at ./src/file/filecontentindexer.cpp:125
#9  0x00007f9ba9da810c in QObject::event (this=0x558202c0a610, e=0x7f5b90075810) at kernel/qobject.cpp:1314
#10 0x00007f9ba9d7a78f in doNotify (event=0x7f5b90075810, receiver=0x558202c0a610) at kernel/qcoreapplication.cpp:1153
#11 QCoreApplication::notify (event=<optimized out>, receiver=<optimized out>, this=<optimized out>) at kernel/qcoreapplication.cpp:1139
#12 QCoreApplication::notifyInternal2 (receiver=0x558202c0a610, event=0x7f5b90075810) at kernel/qcoreapplication.cpp:1063
#13 0x00007f9ba9d7d7e1 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x558202bd04b0) at kernel/qcoreapplication.cpp:1817
#14 0x00007f9ba9dd4ba7 in postEventSourceDispatch (s=0x558202beec70) at kernel/qeventdispatcher_glib.cpp:277
#15 0x00007f9ba83018eb in g_main_dispatch (context=0x558202bec9b0) at ../../../glib/gmain.c:3337
#16 g_main_context_dispatch (context=0x558202bec9b0) at ../../../glib/gmain.c:4055
#17 0x00007f9ba8354d28 in g_main_context_iterate.constprop.0 (context=context@entry=0x558202bec9b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4131
#18 0x00007f9ba82ff023 in g_main_context_iteration (context=0x558202bec9b0, may_block=may_block@entry=1) at ../../../glib/gmain.c:4196
#19 0x00007f9ba9dd4204 in QEventDispatcherGlib::processEvents (this=0x558202bec030, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#20 0x00007f9ba9d7911b in QEventLoop::exec (this=this@entry=0x7ffcee176e20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#21 0x00007f9ba9d81604 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#22 0x0000558201e778aa in main (argc=<optimized out>, argv=<optimized out>) at ./src/file/main.cpp:78
[Inferior 1 (process 2538) detached]

The reporter indicates this bug may be a duplicate of or related to bug 443226 .

Comment 1 tagwerk19 2021-10-11 08:26:33 UTC

There's no chance that this is an index corruption?

I'd suggest to close down baloo, rename the
    .local/share/baloo/index
file, restart and allow baloo to rebuild - and see if the issue reappears.

Comment 2 ltstarwarskid 2021-10-11 15:56:54 UTC

(In reply to tagwerk19 from comment #1)
> There's no chance that this is an index corruption?
> 
> I'd suggest to close down baloo, rename the
>     .local/share/baloo/index
> file, restart and allow baloo to rebuild - and see if the issue reappears.

I'll force it to rebuild and get back to you, but it might be inconclusive. It's not frequent by any means.

Comment 3 ltstarwarskid 2021-10-25 15:16:23 UTC

(In reply to ltstarwarskid from comment #2)
> (In reply to tagwerk19 from comment #1)
> > There's no chance that this is an index corruption?
> > 
> > I'd suggest to close down baloo, rename the
> >     .local/share/baloo/index
> > file, restart and allow baloo to rebuild - and see if the issue reappears.
> 
> I'll force it to rebuild and get back to you, but it might be inconclusive.
> It's not frequent by any means.

No crash since forced a rebuild on 10/11, however as noted it is a rare crash for me. The original crash and current lack of it however might also be related to me no longer using the wayland session until a different issue that caused plasmashell and related items to crash is resolved since rebuild.

Comment 4 Nicolas Fella 2022-10-15 14:51:10 UTC


*** This bug has been marked as a duplicate of bug 441860 ***