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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2009-10-14 20:43:39 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-10-14 20:43:39 +0200 |
| commit | 06f43d66ec36388056f5c697bf1e67c0e0a1645c (patch) | |
| tree | 04b8735f670570d146c0c12bb403effc94e14346 /kernel | |
| parent | tracing: Document HAVE_SYSCALL_TRACEPOINTS needs (diff) | |
| download | linux-dev-06f43d66ec36388056f5c697bf1e67c0e0a1645c.tar.xz linux-dev-06f43d66ec36388056f5c697bf1e67c0e0a1645c.zip | |
ftrace: Copy ftrace_graph_filter boot param using strlcpy
We are using strncpy in the wrong way to copy the ftrace_graph_filter
boot param because we pass the buffer size instead of the max string
size it can contain (buffer size - 1). The end result might not be
NULL terminated as we are abusing the max string size.
Lets use strlcpy() instead.
Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/ftrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index aaea9cda8781..b10c0d90a6ff 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2293,7 +2293,7 @@ __setup("ftrace_filter=", set_ftrace_filter); #ifdef CONFIG_FUNCTION_GRAPH_TRACER static int __init set_graph_function(char *str) { - strncpy(ftrace_graph_buf, str, FTRACE_FILTER_SIZE); + strlcpy(ftrace_graph_buf, str, FTRACE_FILTER_SIZE); return 1; } __setup("ftrace_graph_filter=", set_graph_function); |