From: "Steven Rostedt (VMware)" <[email protected]> Let's not remove the warning about offsets and return probes when the offset is invalid.
Signed-off-by: Steven Rostedt <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Acked-by: Naveen N. Rao <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- kernel/trace/trace_kprobe.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 18775ef182f8..2b7d0dd938ba 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -695,6 +695,11 @@ static int create_trace_kprobe(int argc, char **argv) pr_info("Failed to parse symbol.\n"); return ret; } + if (offset && is_return && + !arch_function_offset_within_entry(offset)) { + pr_info("Given offset is not valid for return probe.\n"); + return -EINVAL; + } } argc -= 2; argv += 2; -- 2.9.3
