diff options
author | Steven Rostedt (VMware) <[email protected]> | 2017-02-27 11:52:04 -0500 |
---|---|---|
committer | Arnaldo Carvalho de Melo <[email protected]> | 2017-03-03 19:07:19 -0300 |
commit | d0e02579c282ccf34c79818045ec2d2934b56c19 (patch) | |
tree | e5da9a4703da748b8159d15da4502713150ffde1 | |
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 <[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]>
-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; |