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-rw-r--r--arch/x86_64/kernel/ptrace.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index addc14af0c5..4326a690a50 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -536,8 +536,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
}
ret = 0;
for (ui = 0; ui < sizeof(struct user_regs_struct); ui += sizeof(long)) {
- ret |= __get_user(tmp, (unsigned long __user *) data);
- putreg(child, ui, tmp);
+ ret = __get_user(tmp, (unsigned long __user *) data);
+ if (ret)
+ break;
+ ret = putreg(child, ui, tmp);
+ if (ret)
+ break;
data += sizeof(long);
}
break;