Messages in this thread Patch in this message | | | From | changbin.du@intel ... | Subject | [PATCH v2 2/3] tracing: clear parser->idx if parser gets nothing | Date | Mon, 15 Jan 2018 19:41:13 +0800 |
| |
From: Changbin Du <changbin.du@intel.com>
If only spaces was got in that cycle, we should clear parser->idx to make trace_parser_loaded() return false.
Signed-off-by: Changbin Du <changbin.du@intel.com> --- kernel/trace/trace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 144d08e..b44926e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1236,14 +1236,14 @@ int trace_get_user(struct trace_parser *parser, const char __user *ubuf, cnt--; } + parser->idx = 0; + /* only spaces were written */ if (isspace(ch) || !ch) { *ppos += read; ret = read; goto out; } - - parser->idx = 0; } /* read the non-space input */ -- 2.7.4
| |