Re: [PATCH] gpu: ttm: fix GPF in ttm_bo_release

2021-07-08 Thread Pavel Skripkin
On Thu, 8 Jul 2021 12:56:19 +0200 Christian König wrote: > Am 08.07.21 um 12:09 schrieb Pavel Skripkin: > > On Thu, 8 Jul 2021 11:37:01 +0300 > > Pavel Skripkin wrote: > > > >> On Thu, 8 Jul 2021 08:49:48 +0200 > >> Christian König wrote: > >> > >>> Am 07.07.21 um 20:51 schrieb Pavel Skripkin:

Re: [PATCH] gpu: ttm: fix GPF in ttm_bo_release

2021-07-08 Thread Christian König
Am 08.07.21 um 12:09 schrieb Pavel Skripkin: On Thu, 8 Jul 2021 11:37:01 +0300 Pavel Skripkin wrote: On Thu, 8 Jul 2021 08:49:48 +0200 Christian König wrote: Am 07.07.21 um 20:51 schrieb Pavel Skripkin: My local syzbot instance hit GPF in ttm_bo_release(). Unfortunately, syzbot didn't prod

Re: [PATCH] gpu: ttm: fix GPF in ttm_bo_release

2021-07-08 Thread Pavel Skripkin
On Thu, 8 Jul 2021 11:37:01 +0300 Pavel Skripkin wrote: > On Thu, 8 Jul 2021 08:49:48 +0200 > Christian König wrote: > > > Am 07.07.21 um 20:51 schrieb Pavel Skripkin: > > > My local syzbot instance hit GPF in ttm_bo_release(). > > > Unfortunately, syzbot didn't produce a reproducer for this, b

Re: [PATCH] gpu: ttm: fix GPF in ttm_bo_release

2021-07-07 Thread Christian König
Am 07.07.21 um 20:51 schrieb Pavel Skripkin: My local syzbot instance hit GPF in ttm_bo_release(). Unfortunately, syzbot didn't produce a reproducer for this, but I found out possible scenario: drm_gem_vram_create()<-- drm_gem_vram_object kzalloced