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KVM: ia64: fix the error code of ioctl KVM_IA64_VCPU_GET_STACK failure

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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 <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Wei Yongjun 2010-03-12 08:45:39 +08:00 committed by Avi Kivity
parent ec68798c8f
commit 5c0d0920a2
1 changed files with 3 additions and 1 deletions
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4
arch/ia64/kvm/kvm-ia64.c
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@ -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;
}