Messages in this thread Patch in this message | | | From | sunliming <> | Subject | [PATCH v4 1/3] tracing/user_events: Fix incorrect return value for writing operation when events are disabled | Date | Mon, 26 Jun 2023 19:13:42 +0800 |
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The writing operation return the count of writes regardless of whether events are enabled or disabled. Switch it to return -EBADF to indicates that the event is disabled.
Signed-off-by: sunliming <sunliming@kylinos.cn> --- kernel/trace/trace_events_user.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c index 1ac5ba5685ed..146bb2e9758f 100644 --- a/kernel/trace/trace_events_user.c +++ b/kernel/trace/trace_events_user.c @@ -1957,7 +1957,8 @@ static ssize_t user_events_write_core(struct file *file, struct iov_iter *i) if (unlikely(faulted)) return -EFAULT; - } + } else + return -EBADF; return ret; } -- 2.25.1
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