This is a note to let you know that I've just added the patch titled
KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio()
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-return-an-error-code-in-kvm_vm_ioctl_register_coalesced_mmio.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From aac5c4226e7136c331ed384c25d5560204da10a0 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed, 29 Jan 2014 16:16:39 +0300
Subject: KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit aac5c4226e7136c331ed384c25d5560204da10a0 upstream.
If kvm_io_bus_register_dev() fails then it returns success but it should
return an error code.
I also did a little cleanup like removing an impossible NULL test.
Fixes: 2b3c246a682c ('KVM: Make coalesced mmio use a device per zone')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
virt/kvm/coalesced_mmio.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
--- a/virt/kvm/coalesced_mmio.c
+++ b/virt/kvm/coalesced_mmio.c
@@ -154,17 +154,13 @@ int kvm_vm_ioctl_register_coalesced_mmio
list_add_tail(&dev->list, &kvm->coalesced_zones);
mutex_unlock(&kvm->slots_lock);
- return ret;
+ return 0;
out_free_dev:
mutex_unlock(&kvm->slots_lock);
-
kfree(dev);
- if (dev == NULL)
- return -ENXIO;
-
- return 0;
+ return ret;
}
int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-3.12/target-fix-free-after-use-regression-in-pr-unregister.patch
queue-3.12/kvm-return-an-error-code-in-kvm_vm_ioctl_register_coalesced_mmio.patch
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