Comment 4 for bug 1340349

On Thu, Jul 10, 2014 at 08:39:25PM -0000, Dave wrote:
> [...]
> banshee() [0x4b73d8]
> banshee() [0x50f13b]
> banshee() [0x423d22]
> /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340) [0x7fec7761d340]
> /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstequalizer.so(+0x22e0) [0x7fec36e7a2e0]
> /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstequalizer.so(+0x2c4f) [0x7fec36e7ac4f]
> /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0(+0x33960) [0x7fec64ccb960]
> /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0(+0x340a1) [0x7fec64ccc0a1]
> /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0(+0x60d08) [0x7fec649f4d08]
> /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0(+0x342a9) [0x7fec64ccc2a9]
> /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0(+0x60d08) [0x7fec649f4d08]
> /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0(+0x342a9) [0x7fec64ccc2a9]
> /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0(+0x60d08) [0x7fec649f4d08]
> /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so(+0x20eb0) [0x7fec4c99ceb0]
> /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0(+0x8e549) [0x7fec64a22549]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x6e89c) [0x7fec7456689c]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x6df15) [0x7fec74565f15]
> /lib/x86_64-linux-gnu/libpthread.so.0(+0x8182) [0x7fec77615182]
> /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fec7734230d]

Looks like it's segfaulting due to some gstreamer bug, but I can't tell from
this stack trace.

> Debug info from gdb:
>
> Could not attach to process. If your uid matches the uid of the target
> process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
> again as the root user. For more details, see /etc/sysctl.d/10-ptrace.conf
> ptrace: Operation not permitted.
> No threads.

Please run the following command, and then try again:

sudo sysctl kernel/yama/ptrace_scope=1

This allows Banshee to hook into gdb and get a more detailed stack trace from
the crash.

--
Kind regards,
Loong Jin