[xine-bugs] [ xine-Bugs-1620339 ] video_out_xv can free() wrong pointers

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Bugs item #1620339, was opened at 2006-12-21 18:08
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Category: xine-lib
Group: v1.1.3
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthias Drochner (drochner)
Assigned to: Nobody/Anonymous (nobody)
Summary: video_out_xv can free() wrong pointers

Initial Comment:
If a system runs out of shared memory while a xine
application is running, the "use_shm" flag is set
to 0. From that point, free() is used to free
image buffers, regardless whether the buffer was
allocated in shared memory before.
On my box (NetBSD), this leads to diagnostic output
from libc ("junk pointer, too high to make sense").

The appended patch changes the "dispose" function
to check the "shmaddr" field of "shminfo" which
should tell whether the individual buffer was
allocated in shared memory or not.
With that in place, I don't get the libc warnings
anymore.

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