# \[PATCH v3 15/16\] tracing/filters: Fix error position for within filter operator check - From: Masami Hiramatsu (Google) \ - Date: 2026-10-28 00:45:47 - List: linux-trace-kernel - Page: https://ratatoskr.run/linux-trace-kernel/2026/10/17814026 - Thread: https://ratatoskr.run/linux-trace-kernel/2026/10/17814009/t.md ```text From: Masami Hiramatsu (Google) In parse_pred(), when the '~' operator is used with a 'within' filter, 'pos + i' points to the closing quote of the operand rather than to the unsupported '~' operator. Pass 'pos + op_pos' so the error caret points to the invalid operator. Fixes: 7884b0bf098c ("tracing: Add "within" filter for call-stack-based event filtering") Cc: Signed-off-by: Masami Hiramatsu (Google) --- Changes in v3: - Newly added to fix error position for within filter operator check. --- kernel/trace/trace_events_filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 291c9805e119..bd54fa6e58ee 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -2096,7 +2096,7 @@ static int parse_pred(const char *str, void *data, unsigned long func; if (op == OP_GLOB) { - parse_error(pe, FILT_ERR_GLOB_WITHIN, pos + i); + parse_error(pe, FILT_ERR_GLOB_WITHIN, pos + op_pos); goto err_free; } ```