diff options
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-02-27 11:52:04 -0500 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-03-03 19:07:19 -0300 |
| commit | d0e02579c282ccf34c79818045ec2d2934b56c19 (patch) | |
| tree | e5da9a4703da748b8159d15da4502713150ffde1 /kernel/trace/trace_kprobe.c | |
| parent | f1c4d1ad39b5f7c617572f93658bb7159ec9c686 (diff) | |
trace/kprobes: Add back warning about offset in return probes
Let's not remove the warning about offsets and return probes when the
offset is invalid.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20170227115204.00f92846@gandalf.local.home
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/trace/trace_kprobe.c')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 5 |
1 files changed, 5 insertions, 0 deletions
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; |