1 files changed, 8 insertions, 1 deletions

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 8f64abe699fd..d5904eef1d31 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1055,10 +1055,17 @@ static int putreg32(struct task_struct *child, unsigned regno, u32 value)
         R32(esi, si);
         R32(ebp, bp);
         R32(eax, ax);
-        R32(orig_eax, orig_ax);
         R32(eip, ip);
         R32(esp, sp);
 
+        case offsetof(struct user32, regs.orig_eax):
+                /*
+                 * Sign-extend the value so that orig_eax = -1
+                 * causes (long)orig_ax < 0 tests to fire correctly.
+                 */
+                regs->orig_ax = (long) (s32) value;
+                break;
+
         case offsetof(struct user32, regs.eflags):
                 return set_flags(child, value);