Re: nouveau broken on Riva TNT2 in 5.13.0-rc4: NULL pointer dereference in nouveau_bo_sync_for_device

From: Christian König
Date: Wed Jun 09 2021 - 03:02:50 EST

Am 09.06.21 um 08:57 schrieb Ondrej Zary:
Thanks for the heads up. So the problem with my patch is already fixed,
isn't it?
The NULL pointer dereference in nouveau_bo_wr16 introduced in
141b15e59175aa174ca1f7596188bd15a7ca17ba was fixed by

That's the bug I hit when bisecting the original problem:
NULL pointer dereference in nouveau_bo_sync_for_device
It's caused by:
# first bad commit: [e34b8feeaa4b65725b25f49c9b08a0f8707e8e86] drm/ttm: merge ttm_dma_tt back into ttm_tt

Good that I've asked :)

Ok that's a bit strange. e34b8feeaa4b65725b25f49c9b08a0f8707e8e86 was created mostly automated.

Do you have the original backtrace of that NULL pointer deref once more?