---

yaml --- r: 182597 b: refs/heads/master c: c6a0dd7 h: refs/heads/master i: 182595: 3099918 v: v3
git-mirror · Feb 23, 2010 · 86e94da · 86e94da
1 parent cb1792b
commit 86e94da
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Showing 3 changed files with 7 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5e6dbc260704ce4d22fc9664f517f0bb6748feaa
+refs/heads/master: c6a0dd7ec6fb2d4927979ed4dc562fc5c122d826
diff --git a/trunk/include/linux/ptrace.h b/trunk/include/linux/ptrace.h
@@ -30,6 +30,11 @@
 /*
  * Generic ptrace interface that exports the architecture specific regsets
  * using the corresponding NT_* types (which are also used in the core dump).
+ * Please note that the NT_PRSTATUS note type in a core dump contains a full
+ * 'struct elf_prstatus'. But the user_regset for NT_PRSTATUS contains just the
+ * elf_gregset_t that is the pr_reg field of 'struct elf_prstatus'. For all the
+ * other user_regset flavors, the user_regset layout and the ELF core dump note
+ * payload are exactly the same layout.
  *
  * This interface usage is as follows:
  *	struct iovec iov = { buf, len};

diff --git a/trunk/kernel/ptrace.c b/trunk/kernel/ptrace.c
@@ -537,7 +537,7 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type,
 	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,