Den 2023-07-21 kl. 19:05, skrev Greg Kroah-Hartman: > From: Christian König <christian.koenig@xxxxxxx> > > commit a2848d08742c8e8494675892c02c0d22acbe3cf8 upstream. > > There is a small window where we have already incremented the pin count > but not yet moved the bo from the lru to the pinned list. > > Signed-off-by: Christian König <christian.koenig@xxxxxxx> > Reported-by: Pelloux-Prayer, Pierre-Eric <Pierre-eric.Pelloux-prayer@xxxxxxx> > Tested-by: Pelloux-Prayer, Pierre-Eric <Pierre-eric.Pelloux-prayer@xxxxxxx> > Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Link: https://patchwork.freedesktop.org/patch/msgid/20230707120826.3701-1-christian.koenig@xxxxxxx > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/ttm/ttm_bo.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > --- a/drivers/gpu/drm/ttm/ttm_bo.c > +++ b/drivers/gpu/drm/ttm/ttm_bo.c > @@ -517,6 +517,12 @@ static bool ttm_bo_evict_swapout_allowab > { > bool ret = false; > > + if (bo->pin_count) { > + *locked = false; > + *busy = false; > + return false; > + } > + > if (bo->base.resv == ctx->resv) { > dma_resv_assert_held(bo->base.resv); > if (ctx->allow_res_evict) > This one will trigger GPF and needs a follow-up fix that is not upstream yet: https://patchwork.freedesktop.org/patch/547897/ as reported on LKML in thread: [bug/bisected] commit a2848d08742c8e8494675892c02c0d22acbe3cf8 cause general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI -- Thomas
