Bug#863416: jackeq: segmentation fault

[James Cowgill]

Control: clone -1 -2
Control: reassign -2 timemachine 0.3.3-2
Control: retitle -2 timemachine: segfaults on startup
Control: clone -1 -3
Control: reassign -3 kluppe 0.6.20-1
Control: retitle -3 kluppe: segfaults when pressing 'new looper'

Hi again,

On 26/05/17 16:42, James Cowgill wrote:
> On 26/05/17 16:30, James Cowgill wrote:
>> On 26/05/17 16:01, Alex Wilk wrote:
>>> Package: jackeq
>>> Version: 0.5.9-2+b2
>>> Severity: normal
>>>
>>> Dear Maintainer!
>>>
>>> ,----
>>> | $ jackeq 
>>> | jackEQ 0.5.9
>>> | (c) 2003 - 2009 P. Shirkey
>>> | Featuring the DJEQ ladspa plugin by S. Harris
>>> | With assistance from J. O'Quin on the awesome Jack i/o dropdown menu
>>> | This is free software, and you are welcome to redistribute it
>>> | under certain conditions; see the file COPYING for details.
>>> | Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve property `gtk-primary-button-warps-slider' of type `gboolean' from rc file value "((GString*) 0x55e8dc961840)" of type `gboolean'
>>> | zsh: segmentation fault  jackeq
>>> `----
>>
>> Unfortunately I cannot get jackeq to start at all so I'm raising the
>> severity.
>>
>> From a brief look in gdb, it seems that jackeq passes gtk a truncated
>> pointer. I expect this was triggered by the recent PIE rebuild exposing
>> the fact that jackeq is not 64-bit clean.
> 
> So the bug is in src/gtkmeter.c, where gtk_meter_get_type returns an
> unsigned int instead of a pointer. This code looked _very_ familiar
> because the exact same code has already been fixed in jamin! See #848672
> 
> Compare jamin from jessie with jackeq from stretch:
> https://sources.debian.net/src/jamin/0.97.14~cvs~81203-4/src/gtkmeter.c/
> https://sources.debian.net/src/jackeq/0.5.9-2/src/gtkmeter.c/
> 
> Code search:
> https://codesearch.debian.net/search?q=gtk_meter_get_type
> 
> So probably kluppe and timemachine are affected as well.

I've tested both kluppe and timemachine and they both segfault in
exactly the same place.

Kluppe segfaults when pressing "new looper" in the interface. Since this
seems to be a pretty critical feature of kluppe, I've kept the bug at
grave severity.

Timemachine just segfaults on startup like jackeq does.

Note you need a jack server running to reproduce both of these bugs.

Thanks,
James

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