[PATCH] drm: fix i_mapping and f_mapping initialization in drm_open in error path
Marco Munderloh
munderl at tnt.uni-hannover.de
Tue Apr 2 05:01:37 PDT 2013
Hi Ilija,
> Thanks for testing. Other issues are probably unrelated, so I'll send the last version of the patch to Dave.
I came across another problem which seems related. rmmod radeon works, however, modprobe radeon afterwards results in a crash (divide error), see attachment.
Best, Marco
On 02.04.2013 13:23, Ilija Hadzic wrote:
>
> -- Ilija
>
> On Tue, Apr 2, 2013 at 6:36 AM, Marco Munderloh <munderl at tnt.uni-hannover.de <mailto:munderl at tnt.uni-hannover.de>> wrote:
>
> Attached is a v2 of the patch, for reference. I would appreciate if the original reporter or you tested it in lieu of your proposed patch and let me know if it
> fixes your
> issue.
>
>
> The patch works for me. echo 3 > /proc/sys/vm/drop_caches as well as rmmod radeon do not end up in a crash anymore. However, I have still no clue why one of these makes
> drm_open to fail. On rmmod radeon I get the following log messages. If don't know if the 'unpin not necessary' has anything to do with it.
>
> [drm] radeon: finishing device.
> radeon 0000:01:00.0: ffff88024e526c00 unpin not necessary
> radeon 0000:01:00.0: ffff88024f2f6000 unpin not necessary
> radeon 0000:01:00.0: ffff88024f2f6000 unpin not necessary
> [TTM] Finalizing pool allocator
> [TTM] Finalizing DMA pool allocator
> [TTM] Zone kernel: Used memory at exit: 0 kiB
> [TTM] Zone dma32: Used memory at exit: 0 kiB
> [drm] radeon: ttm finalized
> vga_switcheroo: disabled
> [drm] Module unloaded
>
> By the way, sometimes my r8169 ethernet controller does not survive suspend/hibernation (does not detect link). rmmod/modprobe helps. I don't know if this is related.
>
>
--
Dipl.-Ing. Marco Munderloh Mail: munderl at tnt.uni-hannover.de
Institut für Informationsverarbeitung (TNT) Phone: +49 511 762-19587
Leibniz Universitaet Hannover, Appelstr. 9a Fax: +49 511 762- 5333
30167 Hannover, Germany Web: http://www.tnt.uni-hannover.de/~munderl
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