summaryrefslogtreecommitdiffstats
path: root/kernel/trace
diff options
context:
space:
mode:
authorChangbin Du <changbin.du@intel.com>2018-01-16 17:02:29 +0800
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2018-01-23 15:57:28 -0500
commit76638d96502744b0d593f2386b75ae5a017c13bb (patch)
treecb6b25e2586657ecd8adb61deae7a3ebc00f8247 /kernel/trace
parent921a7acd85ebbab1b3cd99828e6842fd3e78df24 (diff)
downloadlinux-76638d96502744b0d593f2386b75ae5a017c13bb.tar.bz2
tracing: Clear parser->idx if only spaces are read
If only spaces were read while parsing the next string, then parser->idx should be cleared in order to make trace_parser_loaded() return false. Link: http://lkml.kernel.org/r/1516093350-12045-3-git-send-email-changbin.du@intel.com Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Changbin Du <changbin.du@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c00a31d18f8a..cb90435e63da 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 */