From: "Steven Rostedt (VMware)" <rost...@goodmis.org> Let's not remove the warning about offsets and return probes when the offset is invalid.
Signed-off-by: Steven Rostedt <rost...@goodmis.org> Acked-by: Masami Hiramatsu <mhira...@kernel.org> Acked-by: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ana...@linux.vnet.ibm.com> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20170227115204.00f92...@gandalf.local.home Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- 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
