From: Masami Hiramatsu (Google) <[email protected]>

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.

Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
---
Changes in v4:
 - Drop Fixes and Cc: stable tags since this error position fix is a
   cleanup.
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 1a9a1cc8daa2..1a50de4e7e8d 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -2106,7 +2106,7 @@ 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;
                        }
 


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