From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 29 Sep 2022 20:07:41 +0000 (-0400)
Subject: Fix: bytecode interpreter context_get_index() leaves byte order uninitialized
X-Git-Tag: v2.12.11~5
X-Git-Url: http://git.liburcu.org/?p=lttng-modules.git;a=commitdiff_plain;h=fd6f8c5b5963cd84454314fce8870e75fb23de64

Fix: bytecode interpreter context_get_index() leaves byte order uninitialized

Within the bytecode interpreter, context_get_index() leaves the "rev_bo"
field uninitialized in the top of stack.

Initialize the rev_bo field based on the context field type
reserve_byte_order field.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I76576a3b9dd87f218e7226095c85590e1eb0beec
---

diff --git a/lttng-filter-interpreter.c b/lttng-filter-interpreter.c
index d9dc6195..821c12d3 100644
--- a/lttng-filter-interpreter.c
+++ b/lttng-filter-interpreter.c
@@ -290,6 +290,7 @@ static int context_get_index(struct lttng_probe_ctx *lttng_probe_ctx,
 			ptr->u.u64 = v.s64;	/* Cast. */
 			ptr->ptr = &ptr->u.u64;
 		}
+		ptr->rev_bo = field->type.u.basic.integer.reverse_byte_order;
 		break;
 	case atype_enum:
 	{
@@ -306,6 +307,7 @@ static int context_get_index(struct lttng_probe_ctx *lttng_probe_ctx,
 			ptr->u.u64 = v.s64;	/* Cast. */
 			ptr->ptr = &ptr->u.u64;
 		}
+		ptr->rev_bo = itype->reverse_byte_order;
 		break;
 	}
 	case atype_array: