[PATCH i-g-t] tools/intel_reg: Fix segfault in intel_reg dump

[Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>]

We need to zero out the builtin reg spec we are parsing into.
Otherwise engine will be uninitialized and we segfault when trying
to find engine and accessing reg->engine in later stage.

Fixes: 7f0be0e7d9be ("tools/intel_reg: Add reading and writing registers through engine")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104895
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Marta Löfstedt <marta.lofstedt@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
 tools/intel_reg_decode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/intel_reg_decode.c b/tools/intel_reg_decode.c
index 46b19676..b351dcb5 100644
--- a/tools/intel_reg_decode.c
+++ b/tools/intel_reg_decode.c
@@ -2748,6 +2748,8 @@ static ssize_t get_regs(struct reg **regs, size_t *nregs, ssize_t index,
 				&known_registers[i].regs[j];
 			struct reg reg;
 
+			memset(&reg, 0, sizeof(reg));
+
 			/* XXX: Could be optimized. */
 			parse_port_desc(&reg, NULL);
 
-- 
2.14.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx