From 5c0d0920a270b9f2aa20c1cecb162703da32e766 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 12 Mar 2010 08:45:39 +0800 Subject: KVM: ia64: fix the error code of ioctl KVM_IA64_VCPU_GET_STACK failure The ioctl KVM_IA64_VCPU_GET_STACK does not set the error code if copy_to_user() fail, and 0 will be return, we should use -EFAULT instead of 0 in this case, so this patch fixed it. Signed-off-by: Wei Yongjun Signed-off-by: Marcelo Tosatti --- arch/ia64/kvm/kvm-ia64.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/ia64') diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 7f3c0a2e60c..38d51302f5b 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1535,8 +1535,10 @@ long kvm_arch_vcpu_ioctl(struct file *filp, goto out; if (copy_to_user(user_stack, stack, - sizeof(struct kvm_ia64_vcpu_stack))) + sizeof(struct kvm_ia64_vcpu_stack))) { + r = -EFAULT; goto out; + } break; } -- cgit v1.2.3