diff mbox

[2/4] kvm: kvm_create_vm_debugfs(): cleanup on error

Message ID 1472663145-1835-3-git-send-email-lcapitulino@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Luiz Capitulino Aug. 31, 2016, 5:05 p.m. UTC
Memory and debugfs entries are leaked on error. Fix it.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 virt/kvm/kvm_main.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Comments

Paolo Bonzini Sept. 2, 2016, 1:53 p.m. UTC | #1
On 31/08/2016 19:05, Luiz Capitulino wrote:
> Memory and debugfs entries are leaked on error. Fix it.
> 
> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
> ---
>  virt/kvm/kvm_main.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index c1dc45e..9293285 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -585,12 +585,12 @@ static int kvm_create_vm_debugfs(struct kvm *kvm, int fd)
>  					 sizeof(*kvm->debugfs_stat_data),
>  					 GFP_KERNEL);
>  	if (!kvm->debugfs_stat_data)
> -		return -ENOMEM;
> +		goto out_err;
>  
>  	for (p = debugfs_entries; p->name; p++) {
>  		stat_data = kzalloc(sizeof(*stat_data), GFP_KERNEL);
>  		if (!stat_data)
> -			return -ENOMEM;
> +			goto out_err;
>  
>  		stat_data->kvm = kvm;
>  		stat_data->offset = p->offset;
> @@ -599,9 +599,13 @@ static int kvm_create_vm_debugfs(struct kvm *kvm, int fd)
>  					 kvm->debugfs_dentry,
>  					 stat_data,
>  					 stat_fops_per_vm[p->kind]))
> -			return -ENOMEM;
> +			goto out_err;
>  	}
>  	return 0;
> +
> +out_err:
> +	kvm_destroy_vm_debugfs(kvm);
> +	return -ENOMEM;
>  }
>  
>  static struct kvm *kvm_create_vm(unsigned long type)
> 

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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diff mbox

Patch

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c1dc45e..9293285 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -585,12 +585,12 @@  static int kvm_create_vm_debugfs(struct kvm *kvm, int fd)
 					 sizeof(*kvm->debugfs_stat_data),
 					 GFP_KERNEL);
 	if (!kvm->debugfs_stat_data)
-		return -ENOMEM;
+		goto out_err;
 
 	for (p = debugfs_entries; p->name; p++) {
 		stat_data = kzalloc(sizeof(*stat_data), GFP_KERNEL);
 		if (!stat_data)
-			return -ENOMEM;
+			goto out_err;
 
 		stat_data->kvm = kvm;
 		stat_data->offset = p->offset;
@@ -599,9 +599,13 @@  static int kvm_create_vm_debugfs(struct kvm *kvm, int fd)
 					 kvm->debugfs_dentry,
 					 stat_data,
 					 stat_fops_per_vm[p->kind]))
-			return -ENOMEM;
+			goto out_err;
 	}
 	return 0;
+
+out_err:
+	kvm_destroy_vm_debugfs(kvm);
+	return -ENOMEM;
 }
 
 static struct kvm *kvm_create_vm(unsigned long type)