diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2019-03-14 13:30:40 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-03-14 19:54:11 -0400 |
| commit | 5b7a96220900e3c3f6fb53908eb4602cda959376 (patch) | |
| tree | 67c4ae71d822db5f8a988955ee6765e489df1ced | |
| parent | b4443c17a3c9d652dc5d7679ddca867ee3cdaa9c (diff) | |
tracing/probe: Check event/group naming rule at parsing
Check event and group naming rule at parsing it instead
of allocating probes.
Link: http://lkml.kernel.org/r/155253784064.14922.2336893061156236237.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 7 | ||||
| -rw-r--r-- | kernel/trace/trace_probe.c | 8 | ||||
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 5 |
3 files changed, 10 insertions, 10 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index a14837545295..5265117ad7e8 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -221,7 +221,7 @@ static struct trace_kprobe *alloc_trace_kprobe(const char *group, tk->rp.maxactive = maxactive; - if (!event || !is_good_name(event)) { + if (!event || !group) { ret = -EINVAL; goto error; } @@ -231,11 +231,6 @@ static struct trace_kprobe *alloc_trace_kprobe(const char *group, if (!tk->tp.call.name) goto error; - if (!group || !is_good_name(group)) { - ret = -EINVAL; - goto error; - } - tk->tp.class.system = kstrdup(group, GFP_KERNEL); if (!tk->tp.class.system) goto error; diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c index bf9d3d7e0c9d..8f8411e7835f 100644 --- a/kernel/trace/trace_probe.c +++ b/kernel/trace/trace_probe.c @@ -172,6 +172,10 @@ int traceprobe_parse_event_name(const char **pevent, const char **pgroup, return -E2BIG; } strlcpy(buf, event, slash - event + 1); + if (!is_good_name(buf)) { + pr_info("Group name must follow the same rules as C identifiers\n"); + return -EINVAL; + } *pgroup = buf; *pevent = slash + 1; event = *pevent; @@ -184,6 +188,10 @@ int traceprobe_parse_event_name(const char **pevent, const char **pgroup, pr_info("Event name is too long\n"); return -E2BIG; } + if (!is_good_name(event)) { + pr_info("Event name must follow the same rules as C identifiers\n"); + return -EINVAL; + } return 0; } diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index e335576b9411..52f033489377 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -266,10 +266,7 @@ alloc_trace_uprobe(const char *group, const char *event, int nargs, bool is_ret) { struct trace_uprobe *tu; - if (!event || !is_good_name(event)) - return ERR_PTR(-EINVAL); - - if (!group || !is_good_name(group)) + if (!event || !group) return ERR_PTR(-EINVAL); tu = kzalloc(SIZEOF_TRACE_UPROBE(nargs), GFP_KERNEL); |