Nouveau - Feb 2008 - [Bug 14426] SIGSEV in NVAccelUploadIFC

http://bugs.freedesktop.org/show_bug.cgi?id=14426


Jaime Velasco Juan <jsagarribay at gmail.com> changed:

           What    |Removed                     |Added
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         AssignedTo|xorg-team at lists.x.org       |nouveau at
lists.freedesktop.or
                   |                            |g




--- Comment #1 from Jaime Velasco Juan <jsagarribay at gmail.com> 
2008-02-08 10:51:41 PST ---
Sorry, I selected wrong component


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http://bugs.freedesktop.org/show_bug.cgi?id=14426





--- Comment #2 from Jaime Velasco Juan <jsagarribay at gmail.com> 
2008-02-09 09:03:17 PST ---
Created an attachment (id=14237)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14237)
Xorg.log with DMA_TRACE and DMA_DEBUG enabled

I enabled NOUVEAU_DMA_DEBUG and NOUVEAU_DMA_TRACE.

The bug triggers when the input needs padding. The code reads the padding bytes
from the input data, but after the last line of the input there is not valid
data and the driver gets a SIGSEV. If I force the driver to skip the last line
it doesn't crash (but I get some corruption).


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--- Comment #3 from Jaime Velasco Juan <jsagarribay at gmail.com> 
2008-02-16 07:10:16 PST ---
Created an attachment (id=14356)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14356)
Do not access beyond source pixmap in NVAccelUploadIFC

This patch fixes the issue for me


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--- Comment #4 from Danny <obiwan at mailmij.org>  2008-02-27 02:04:54 PST
---
I can confirm this. Would be nice to see it fixed in git as well?

danny


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Stephane Marchesin <marchesin at icps.u-strasbg.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #5 from Stephane Marchesin <marchesin at icps.u-strasbg.fr> 
2008-03-06 15:20:50 PST ---
Thanks for the patch! Tested and pushed.


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