Commit 803aa6fc2dbe for kernel

commit 803aa6fc2dbea25ab9d3ed19eca1c96d0ab17445
Author: Taeyang Lee <0wn@theori.io>
Date:   Fri Oct 16 02:19:05 2026 +0900

    tracing: Keep the predicate limit separate from program capacity

    predicate_parse() adds two to nr_preds to reserve the terminal TRUE
    and FALSE entries. It also uses that increased value as the limit for
    parsed predicates. If the initial count is smaller than the number
    actually parsed, the program can fill the allocation and subsequent
    accesses can go past its end.

    Keep nr_preds as the predicate limit and use a separate value for the
    allocation size. This leaves space for both terminal entries and a
    zeroed entry when parsing stops at the limit.

    Cc: stable@vger.kernel.org
    Fixes: 39f7c41c908b ("tracing/filters: Enable filtering a cpumask field by another cpumask")
    Link: https://patch.msgid.link/atELCd1XjKVhrkFL@Taeyangs-MacBook-Pro.local
    Signed-off-by: Taeyang Lee <0wn@theori.io>
    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 2b46ca536045..781416ba6bdf 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -482,18 +482,17 @@ predicate_parse(const char *str, int nr_parens, int nr_preds,
 	int len;
 	int N = 0;
 	int i;
-
-	nr_preds += 2; /* For TRUE and FALSE */
+	int nr_preds_alloc = nr_preds + 2; /* For TRUE and FALSE */

 	op_stack = kmalloc_objs(*op_stack, nr_parens);
 	if (!op_stack)
 		return ERR_PTR(-ENOMEM);
-	prog_stack = kzalloc_objs(*prog_stack, nr_preds);
+	prog_stack = kzalloc_objs(*prog_stack, nr_preds_alloc);
 	if (!prog_stack) {
 		parse_error(pe, -ENOMEM, 0);
 		goto out_free;
 	}
-	inverts = kmalloc_array(nr_preds, sizeof(*inverts), GFP_KERNEL);
+	inverts = kmalloc_array(nr_preds_alloc, sizeof(*inverts), GFP_KERNEL);
 	if (!inverts) {
 		parse_error(pe, -ENOMEM, 0);
 		goto out_free;