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radeonsi: fix segfault in descriptor dumping

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2017-09-09 17:36:07 +02:00
parent 81f398dcb1
commit 7e4344151f
1 changed files with 18 additions and 0 deletions
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18
src/gallium/drivers/radeonsi/si_debug.c
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@@ -666,6 +666,24 @@ static void si_dump_descriptor_list(struct si_screen *screen,
if (!desc->list)
return;
/* In some cases, the caller doesn't know how many elements are really
* uploaded. Reduce num_elements to fit in the range of active slots. */
unsigned active_range_dw_begin =
desc->first_active_slot * desc->element_dw_size;
unsigned active_range_dw_end =
active_range_dw_begin + desc->num_active_slots * desc->element_dw_size;
while (num_elements > 0) {
int i = slot_remap(num_elements - 1);
unsigned dw_begin = i * element_dw_size;
unsigned dw_end = dw_begin + element_dw_size;
if (dw_begin >= active_range_dw_begin && dw_end <= active_range_dw_end)
break;
num_elements--;
}
struct si_log_chunk_desc_list *chunk =
CALLOC_VARIANT_LENGTH_STRUCT(si_log_chunk_desc_list,
4 * element_dw_size * num_elements);