[Mesa-dev] [PATCH] intel/batch_decoder: decoding of 3DSTATE_CONSTANT_BODY.

[Sergii Romantsov]

SNB doesn't have a difinition of 3DSTATE_CONSTANT_BODY, thats
why we got segmentation fault when used INTEL_DEBUG=bat.
Fixed by avoiding parsing of 3DSTATE_CONSTANT_BODY if gen_spec
is not observed.

Fixes: 169d8e011ae (intel: Fix 3DSTATE_CONSTANT buffer decoding.)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107190
Signed-off-by: Sergii Romantsov <sergii.romantsov at globallogic.com>
---
 src/intel/common/gen_batch_decoder.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/intel/common/gen_batch_decoder.c b/src/intel/common/gen_batch_decoder.c
index fe7536d..973221b 100644
--- a/src/intel/common/gen_batch_decoder.c
+++ b/src/intel/common/gen_batch_decoder.c
@@ -561,6 +561,10 @@ decode_3dstate_constant(struct gen_batch_decode_ctx *ctx, const uint32_t *p)
    struct gen_group *inst = gen_spec_find_instruction(ctx->spec, p);
    struct gen_group *body =
       gen_spec_find_struct(ctx->spec, "3DSTATE_CONSTANT_BODY");
+   if (body == NULL) {
+      fprintf(ctx->fp, "did not find 3DSTATE_CONSTANT_BODY info\n");
+      return;
+   }
 
    uint32_t read_length[4] = {0};
    uint64_t read_addr[4];
-- 
2.7.4