6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Philip Yang <Philip.Yang@xxxxxxx> commit b671cd3d456315f63171a670769356a196cf7fd0 upstream. Without unsigned long typecast, the size is passed in as zero if page array size >= 4GB, nr_pages >= 0x100000, then sg list converted will have the first and the last chunk lost. Signed-off-by: Philip Yang <Philip.Yang@xxxxxxx> Acked-by: Felix Kuehling <Felix.Kuehling@xxxxxxx> Reviewed-by: Christian König <christian.koenig@xxxxxxx> CC: stable@xxxxxxxxxxxxxxx Signed-off-by: Christian König <christian.koenig@xxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20230821200201.24685-1-Philip.Yang@xxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/drm_prime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -820,7 +820,7 @@ struct sg_table *drm_prime_pages_to_sg(s if (max_segment == 0) max_segment = UINT_MAX; err = sg_alloc_table_from_pages_segment(sg, pages, nr_pages, 0, - nr_pages << PAGE_SHIFT, + (unsigned long)nr_pages << PAGE_SHIFT, max_segment, GFP_KERNEL); if (err) { kfree(sg);
