[POWERPC] Add CHECK_FULL_REGS in several places in ptrace code

This restores the CHECK_FULL_REGS sanity check to every place that can
access the nonvolatile GPRs for ptrace.  This is already done for
native-bitwidth PTRACE_PEEKUSR, but was omitted for many other cases
(32-bit ptrace, PTRACE_GETREGS, etc.); I think there may have been more
uniform checks before that were lost in the recent cleanup of GETREGS et al.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index fb8866e0e35d..cf7732cdd6c7 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -331,6 +331,7 @@ static long arch_ptrace_old(struct task_struct *child, long request, long addr,
                 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
                 unsigned long __user *tmp = (unsigned long __user *)addr;
 
+                CHECK_FULL_REGS(child->thread.regs);
                 for (i = 0; i < 32; i++) {
                         ret = put_user(*reg, tmp);
                         if (ret)
@@ -346,6 +347,7 @@ static long arch_ptrace_old(struct task_struct *child, long request, long addr,
                 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
                 unsigned long __user *tmp = (unsigned long __user *)addr;
 
+                CHECK_FULL_REGS(child->thread.regs);
                 for (i = 0; i < 32; i++) {
                         ret = get_user(*reg, tmp);
                         if (ret)
@@ -517,6 +519,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         ret = -EIO;
                         break;
                 }
+                CHECK_FULL_REGS(child->thread.regs);
                 ret = 0;
                 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
                         ret |= __put_user(ptrace_get_reg(child, ui),
@@ -537,6 +540,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         ret = -EIO;
                         break;
                 }
+                CHECK_FULL_REGS(child->thread.regs);
                 ret = 0;
                 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
                         ret = __get_user(tmp, (unsigned long __user *) data);