On Wed, 26 Feb 2025 15:18:54 +0900 "Masami Hiramatsu (Google)" mhiramat@kernel.org wrote:
From: Masami Hiramatsu (Google) mhiramat@kernel.org
Commit 57a7e6de9e30 ("tracing/fprobe: Support raw tracepoints on future loaded modules") allows user to set a tprobe on non-exist tracepoint but it does not check the tracepoint name is acceptable. So it leads tprobe has a wrong character for events (e.g. with subsystem prefix). In this case, the event is not shown in the events directory.
Reject such invalid tracepoint name.
The tracepoint name must consist of alphabet or digit or '_'.
Fixes: 57a7e6de9e30 ("tracing/fprobe: Support raw tracepoints on future loaded modules") Signed-off-by: Masami Hiramatsu (Google) mhiramat@kernel.org Cc: stable@vger.kernel.org
Reviewed-by: Steven Rostedt (Google) rostedt@goodmis.org
-- Steve
kernel/trace/trace_fprobe.c | 13 +++++++++++++ kernel/trace/trace_probe.h | 1 + 2 files changed, 14 insertions(+)