Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Xavier Guimard]

Package: libqt5sql5
Followup-For: Bug #801501

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Hi all,

since upgrade to 5.5.1+dfsg-6, bug has disappeared.

Best regards,
Xavier

- -- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (600, 'testing'), (500, 'testing-updates')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5sql5 depends on:
ii  libc62.19-22
ii  libqt5core5a [qtbase-abi-5-5-1]  5.5.1+dfsg-6
ii  libstdc++6   5.2.1-23

Versions of packages libqt5sql5 recommends:
ii  libqt5sql5-sqlite  5.5.1+dfsg-6

libqt5sql5 suggests no packages.

- -- no debconf information

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Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Francois Gouget]

On Thu, 29 Oct 2015, Francois Gouget wrote:
[...]
> I'm also getting kactivitymanager crashes related to libQt5Sql.so.5.5.1. From
> dmesg:
> 
> [49609.944830] kactivitymanage[11752]: segfault at 7fbba0763cd0 ip 
> 7fbba06f9291 sp 7ffc09c2c918 error 4 in 
> libQt5Sql.so.5.5.1[7fbba06e5000+3f000]
> 
> For me they are totally unrelated to resuming: they happen on a computer 
> that's
> never suspended. However they do seem to be related to bug 801739. I'll have 
> to
> verify whether the dmesg traces are well correlated to the plasmashell 
> crashes.

I had a few more plasmashell crashes and no new kactivitymanager traces 
in dmesg. So this bug is not related to bug 801739. The only 
kactivitymanager trace I got was shortly after booting up and logging in 
however...


-- 
Francois Gouget   http://fgouget.free.fr/
 The greatest programming project of all took six days; on the seventh day the
  programmer rested. We've been trying to debug the *&^%$#@ thing ever since.
  Moral: design before you implement.

Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Francois Gouget]

Package: libqt5sql5
Version: 5.5.1+dfsg-4
Followup-For: Bug #801501

Dear Maintainer,

I'm also getting kactivitymanager crashes related to libQt5Sql.so.5.5.1. From
dmesg:

[49609.944830] kactivitymanage[11752]: segfault at 7fbba0763cd0 ip 
7fbba06f9291 sp 7ffc09c2c918 error 4 in 
libQt5Sql.so.5.5.1[7fbba06e5000+3f000]

For me they are totally unrelated to resuming: they happen on a computer that's
never suspended. However they do seem to be related to bug 801739. I'll have to
verify whether the dmesg traces are well correlated to the plasmashell crashes.

Note that I'm using sddm and that I have a more recent version of libqt5sql5
than the original reporter. I also had the same plasmashell crashes before the
last upgrade and had the 5.4.2 libqt5sql5 package at the time (but I did not
think of looking into the dmesg log at then).


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5sql5 depends on:
ii  libc62.19-22
ii  libqt5core5a [qtbase-abi-5-5-1]  5.5.1+dfsg-4
ii  libstdc++6   5.2.1-22

Versions of packages libqt5sql5 recommends:
ii  libqt5sql5-sqlite  5.5.1+dfsg-4

libqt5sql5 suggests no packages.

-- no debconf information

Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Lisandro Damián Nicanor Pérez Meyer]

On Sunday 11 October 2015 23:43:27 Xavier wrote:
[snip]
> > You should probably not use kdm at this point. Please try again
> > making sure your system is up to date and with sddm, and see if you
> > can reproduce the bug.
> 
> Hi Lisandro,
> 
> same problem with sddm, but segfault occurs later (more than 1 minute
> after resume). 

OK, I will need a backtrace then :-/

> I found other logs:  when a KDE session is opened, _and
> only in this case_, the screen flashes as soon the computer resumes.
> nouveau/kwin seem involved:

I *think* this is another issue.

-- 
Los errores ortográficos y de redacción fueron insertados con la única
intención de testear sus conocimientos de la lengua castellana.

Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/


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Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Xavier]

On 12/10/2015 16:47, Lisandro Damián Nicanor Pérez Meyer wrote:
> On Sunday 11 October 2015 23:43:27 Xavier wrote: [snip]
>>> You should probably not use kdm at this point. Please try
>>> again making sure your system is up to date and with sddm, and
>>> see if you can reproduce the bug.
>> 
>> Hi Lisandro,
>> 
>> same problem with sddm, but segfault occurs later (more than 1
>> minute after resume).
> 
> OK, I will need a backtrace then :-/

I've posted /var/log/messages here : https://paste.debian.net/315556/
How can I generate a backtrace ?

>> I found other logs:  when a KDE session is opened, _and only in
>> this case_, the screen flashes as soon the computer resumes. 
>> nouveau/kwin seem involved:
> 
> I *think* this is another issue.

Yes, too many errors since upgrade :-(

Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Xavier Guimard]

Package: libqt5sql5
Version: 5.4.2+dfsg-9
Severity: normal

Hi all,

When my laptop (MacBook AIr) resumes from standby, KDE crashes if it was
opened before standby. No problem when kdm is closed. If session is
closed but kdm open, sometimes it works fine, sometimes not.
Looking logs, I found each time the following line in kern.log:

[  948.387826] kactivitymanage[1515]: segfault at 7f458c022cd0 ip
7f458695f1b1 sp 7ffd92065b18 error 4 in
libQt5Sql.so.5.4.2[7f458694b000+3f000]]

I had a look at #796708, but patch seems not to be compliant with
testing/unstable version

Best regards,
Xavier

-- System Information:
Debian Release: stretch/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (60, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5sql5 depends on:
ii  libc62.19-22
ii  libqt5core5a [qtbase-abi-5-4-2]  5.4.2+dfsg-9
ii  libstdc++6   5.2.1-21

Versions of packages libqt5sql5 recommends:
ii  libqt5sql5-sqlite  5.4.2+dfsg-9

libqt5sql5 suggests no packages.

-- no debconf information

Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Lisandro Damián Nicanor Pérez Meyer]

Control: tag -1 moreinfo

On Saturday 10 October 2015 21:33:29 Xavier Guimard wrote:
[snip]

Hi Xavier!

> When my laptop (MacBook AIr) resumes from standby, KDE crashes if it was
> opened before standby. No problem when kdm is closed. If session is
> closed but kdm open, sometimes it works fine, sometimes not.
> Looking logs, I found each time the following line in kern.log:
> 
> [  948.387826] kactivitymanage[1515]: segfault at 7f458c022cd0 ip
> 7f458695f1b1 sp 7ffd92065b18 error 4 in
> libQt5Sql.so.5.4.2[7f458694b000+3f000]]
> 
> I had a look at #796708, but patch seems not to be compliant with
> testing/unstable version

You should probably not use kdm at this point. Please try again making sure 
your system is up to date and with sddm, and see if you can reproduce the bug.


Kinds regards, Lisandro.

-- 
This end should point toward the ground if you want to go to space.
If it starts pointing toward space you are having a bad problem
and you will not get to space today.
  http://xkcd.com/1133/

Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/


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Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Lisandro Damián Nicanor Pérez Meyer]

On Sunday 11 October 2015 13:33:07 Lisandro Damián Nicanor Pérez Meyer wrote:
> Control: tag -1 moreinfo
[snip]
> You should probably not use kdm at this point. Please try again making sure
> your system is up to date and with sddm, and see if you can reproduce the
> bug.

If you want to keep using kdm I would also need a backtrace of the crashing 
app. The problem might be the app making libqtsql5 to crash.

-- 
Why should I care about my chatter from yesterday?
Nothing prevents me from becoming wiser.
  Konrad Adenauer, former German chancellor.
  http://lwn.net/SubscriberLink/397422/60a270d48f933c67/

Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/


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Bug#801501: libqt5sql5: libQt5 segfault when computer resumes from standby

[Xavier]

On 11/10/2015 18:33, Lisandro Damián Nicanor Pérez Meyer wrote:
> Control: tag -1 moreinfo
> 
> On Saturday 10 October 2015 21:33:29 Xavier Guimard wrote: [snip]
> 
> Hi Xavier!
> 
>> When my laptop (MacBook AIr) resumes from standby, KDE crashes if
>> it was opened before standby. No problem when kdm is closed. If
>> session is closed but kdm open, sometimes it works fine,
>> sometimes not. Looking logs, I found each time the following line
>> in kern.log:
>> 
>> [  948.387826] kactivitymanage[1515]: segfault at 7f458c022cd0
>> ip 7f458695f1b1 sp 7ffd92065b18 error 4 in 
>> libQt5Sql.so.5.4.2[7f458694b000+3f000]]
>> 
>> I had a look at #796708, but patch seems not to be compliant
>> with testing/unstable version
> 
> You should probably not use kdm at this point. Please try again
> making sure your system is up to date and with sddm, and see if you
> can reproduce the bug.

Hi Lisandro,

same problem with sddm, but segfault occurs later (more than 1 minute
after resume). I found other logs:  when a KDE session is opened, _and
only in this case_, the screen flashes as soon the computer resumes.
nouveau/kwin seem involved:

Oct 11 23:05:40 mac-debian kernel: [  144.724915] nouveau
E[kwin_x11[1511]] fail set_domain
Oct 11 23:05:40 mac-debian kernel: [  144.724921] nouveau
E[kwin_x11[1511]] validating bo list
Oct 11 23:05:40 mac-debian kernel: [  144.724928] nouveau
E[kwin_x11[1511]] validate: -22
Oct 11 23:05:40 mac-debian kernel: [  144.762168] nouveau
E[kwin_x11[1511]] fail set_domain
Oct 11 23:05:40 mac-debian kernel: [  144.762176] nouveau
E[kwin_x11[1511]] validating bo list
Oct 11 23:05:40 mac-debian kernel: [  144.762183] nouveau
E[kwin_x11[1511]] validate: -22

Each group of 3 lines appears to correspond to a blink.

Note that before upgrade to testing, the computer worked perfectly.

Regards,
Xavier