cheese crashed with SIGSEGV when webcam is already in use

[Hans Harhoff Andersen]

Binary package hint: cheese

Not much to say. I have recently (yesterday) upgraded from 9.10 to 10.4 Beta 1. I just installed Cheese and it crashed after about 5 seconds. The problem was that mplayer was open and the same time and "reading" the webcam ie I had run the command "mplayer /dev/v4l/by-id/usb-0402_USB2.0_Camera-video-index0" and that was still running while I tried opening cheese. Shutting down Mplayer fixed the problem and Cheese is working now.

So the problems seems to be that Cheese throws a segfault when accessing a camera that is already in use.

ProblemType: Crash
Architecture: i386
Date: Sun Mar 21 23:04:18 2010
Disassembly: => 0x0: Cannot access memory at address 0x0
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/bin/cheese
NonfreeKernelModules: nvidia
Package: cheese 2.29.92-0ubuntu1
ProcCmdline: cheese
ProcEnviron:
 LANG=da_DK.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: cheese
StacktraceTop:
 ?? ()
 ?? () from /usr/lib/gstreamer-0.10/libgstvideo4linux2.so
 ?? () from /usr/lib/libgstbase-0.10.so.0
 ?? () from /usr/lib/libgstbase-0.10.so.0
 ?? () from /usr/lib/libgstbase-0.10.so.0
Title: cheese crashed with SIGSEGV
Uname: Linux 2.6.32-16-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 gst_push_src_create (bsrc=0x8f28210,
 gst_base_src_get_range (src=<value optimized out>,
 gst_base_src_loop (pad=0x8f29258) at gstbasesrc.c:2334
 gst_task_func (task=0x8f1b8e0) at gsttask.c:238

[Vish (vish)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:
1. Is this reproducible?
2. If so, what specific steps should we take to recreate this bug? Be as detailed as possible.

Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

[Hans Harhoff Andersen (hansharhoff)]

Yes it is reproducible:

run cat /dev/video0 (replace video0 with your camera device)
and while that is running startup cheese.

Regards Hans

On Sun, May 9, 2010 at 3:26 PM, Vish <email address hidden> wrote:

> Thank you for taking the time to report this bug and helping to make Ubuntu
> better. Please answer these questions:
> 1. Is this reproducible?
> 2. If so, what specific steps should we take to recreate this bug? Be as
> detailed as possible.
>
> Please try to obtain a backtrace following the instructions at
> http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace
> (as an attachment) to the bug report. This will greatly help us in
> tracking down your problem.
>
> ** Changed in: cheese (Ubuntu)
> Status: New => Incomplete
>
> ** Visibility changed to: Public
>
> --
> cheese crashed with SIGSEGV
> https://bugs.launchpad.net/bugs/543758
> You received this bug notification because you are a direct subscriber
> of the bug.
>

[Vish (vish)]

This bug has been sent upstream , and you can follow the progress at:
https://bugzilla.gnome.org/show_bug.cgi?id=618880

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu since that time.

Ubuntu 10.04 (lucid) reached end-of-life on May 9, 2013.

Do you still see a problem related to the one that you reported in a currently supported version of Ubuntu? Please let us know if you do and in which version of Ubuntu otherwise this report can be left to expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

Paul White
[Ubuntu Bug Squad]

[Thiago Figueiro (thiagocsf)]

Unfortunately I’m no longer in a position to reproduce this bug. Feel free to close it.

Sent on the run; please excuse my brevity.

> On 22 Jan 2019, at 03:11, Paul White <email address hidden> wrote:
>
> We are sorry that we do not always have the capacity to review all
> reported bugs in a timely manner. You reported this bug some time ago
> and there have been many changes in Ubuntu since that time.
>
> Ubuntu 10.04 (lucid) reached end-of-life on May 9, 2013.
>
> Do you still see a problem related to the one that you reported in a
> currently supported version of Ubuntu? Please let us know if you do and
> in which version of Ubuntu otherwise this report can be left to expire
> in approximately 60 days time.
>
> Thank you for helping make Ubuntu better.
>
> Paul White
> [Ubuntu Bug Squad]
>
> ** Changed in: cheese (Ubuntu)
> Status: Triaged => Incomplete
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (604196).
> https://bugs.launchpad.net/bugs/543758
>
> Title:
> cheese crashed with SIGSEGV when webcam is already in use
>
> Status in Cheese:
> Expired
> Status in cheese package in Ubuntu:
> Incomplete
>
> Bug description:
> Binary package hint: cheese
>
> Not much to say. I have recently (yesterday) upgraded from 9.10 to
> 10.4 Beta 1. I just installed Cheese and it crashed after about 5
> seconds. The problem was that mplayer was open and the same time and
> "reading" the webcam ie I had run the command "mplayer /dev/v4l/by-id
> /usb-0402_USB2.0_Camera-video-index0" and that was still running while
> I tried opening cheese. Shutting down Mplayer fixed the problem and
> Cheese is working now.
>
> So the problems seems to be that Cheese throws a segfault when
> accessing a camera that is already in use.
>
> ProblemType: Crash
> Architecture: i386
> Date: Sun Mar 21 23:04:18 2010
> Disassembly: => 0x0: Cannot access memory at address 0x0
> DistroRelease: Ubuntu 10.04
> ExecutablePath: /usr/bin/cheese
> NonfreeKernelModules: nvidia
> Package: cheese 2.29.92-0ubuntu1
> ProcCmdline: cheese
> ProcEnviron:
> LANG=da_DK.utf8
> SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
> SegvAnalysis:
> Segfault happened at: 0x0: Cannot access memory at address 0x0
> PC (0x00000000) not located in a known VMA region (needed executable region)!
> SegvReason: executing NULL VMA
> Signal: 11
> SourcePackage: cheese
> StacktraceTop:
> ?? ()
> ?? () from /usr/lib/gstreamer-0.10/libgstvideo4linux2.so
> ?? () from /usr/lib/libgstbase-0.10.so.0
> ?? () from /usr/lib/libgstbase-0.10.so.0
> ?? () from /usr/lib/libgstbase-0.10.so.0
> Title: cheese crashed with SIGSEGV
> Uname: Linux 2.6.32-16-generic i686
> UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/cheese/+bug/543758/+subscriptions

[Paul White (paulw2u)]

As bug won't expire due to bug watch will close as fixed.