On Saturday 05 June 2021 23:34:23 Ondrej Zary wrote: > On Saturday 05 June 2021 21:43:52 Ondrej Zary wrote: > > Hello, > > I'm testing 5.13.0-rc4 and nouveau crashes with NULL pointer dereference in nouveau_bo_sync_for_device. > > Found various reports like this but that was back in februaryso that should be fixed now. > > So it is the same bug. Broken since 5.11. This revert fixes it in 5.11: > https://lists.freedesktop.org/archives/dri-devel/2021-February/298531.html > > Added some debug printks to nouveau_bo_sync_for_device: > [ 22.225048] ttm_dma=fc33b500 > [ 22.225066] ttm_dma->num_pages=18 > [ 22.225071] i=0 num_pages=16 > [ 22.225077] ttm_dma->dma_address=00000000 > [ 22.225094] BUG: kernel NULL pointer dereference, address: 00000000 > > So ttm->dma_address is NULL. > Tested reverting f295c8cfec833c2707ff1512da10d65386dde7af again and it does not work... Not sure what I did before. Bisecting between 5.10 and 5.11 is impossible - I keep hitting neverending stream of bugs. As always with nouveau... -- Ondrej Zary
