ptrace: Fix ptrace_regset() comments and diagnose errors specifically
Return -EINVAL for the bad size and for unrecognized NT_* type in
ptrace_regset() instead of -EIO.
Also update the comments for this ptrace interface with more clarifications.
Requested-by: Roland McGrath <roland@redhat.com>
Requested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20100222225240.397523600@sbs-t61.sc.intel.com>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 13b4554..42ad8ae 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -537,7 +537,7 @@
int regset_no;
if (!regset || (kiov->iov_len % regset->size) != 0)
- return -EIO;
+ return -EINVAL;
regset_no = regset - view->regsets;
kiov->iov_len = min(kiov->iov_len,