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authorJan Kiszka <jan.kiszka@siemens.com>2011-06-11 12:23:55 +0200
committerAvi Kivity <avi@redhat.com>2011-07-12 13:16:18 +0300
commit9f3191aec595ef9f3c80bc96664fd7aef57ef5be (patch)
tree53be5ad0a1b677fa9a43bd8b2c22e1c5bad76a54 /virt/kvm/assigned-dev.c
parent1dda606c5f94b14a8f36c220d1d8844bab68a720 (diff)
downloadlinux-linaro-stable-9f3191aec595ef9f3c80bc96664fd7aef57ef5be.tar.gz
KVM: Fix off-by-one in overflow check of KVM_ASSIGN_SET_MSIX_NR
KVM_MAX_MSIX_PER_DEV implies that up to that many MSI-X entries can be requested. But the kernel so far rejected already the upper limit. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/assigned-dev.c')
-rw-r--r--virt/kvm/assigned-dev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index 6cc4b97ec458..4e9eaeb518c7 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -617,7 +617,7 @@ static int kvm_vm_ioctl_set_msix_nr(struct kvm *kvm,
if (adev->entries_nr == 0) {
adev->entries_nr = entry_nr->entry_nr;
if (adev->entries_nr == 0 ||
- adev->entries_nr >= KVM_MAX_MSIX_PER_DEV) {
+ adev->entries_nr > KVM_MAX_MSIX_PER_DEV) {
r = -EINVAL;
goto msix_nr_out;
}