From: Christian König Date: Fri, 3 Jun 2022 10:43:50 +0000 (+0200) Subject: drm/ttm: fix missing NULL check in ttm_device_swapout X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=81b0d0e4f811553cbe2d58c8a495c124fb626432;p=linux.git drm/ttm: fix missing NULL check in ttm_device_swapout Resources about to be destructed are not tied to BOs any more. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Fixes: 6a9b02899402 ("drm/ttm: move the LRU into resource handling v4") Link: https://patchwork.freedesktop.org/patch/msgid/20220603104604.456991-1-christian.koenig@amd.com --- diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c index a0562ab386f51..e7147e3046378 100644 --- a/drivers/gpu/drm/ttm/ttm_device.c +++ b/drivers/gpu/drm/ttm/ttm_device.c @@ -156,8 +156,12 @@ int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx, ttm_resource_manager_for_each_res(man, &cursor, res) { struct ttm_buffer_object *bo = res->bo; - uint32_t num_pages = PFN_UP(bo->base.size); + uint32_t num_pages; + if (!bo) + continue; + + num_pages = PFN_UP(bo->base.size); ret = ttm_bo_swapout(bo, ctx, gfp_flags); /* ttm_bo_swapout has dropped the lru_lock */ if (!ret)