linux-kernel - Re: [PATCH] KVM: release anon file in failure path of vm creation

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Date:	Tue, 12 Jul 2016 12:24:39 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Liu Shuo <shuo.a.liu@...el.com>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Cc:	Zhang Yanmin <yanmin_zhang@...ux.intel.com>,
	He Bo <bo.he@...el.com>, Liu Shuo <shuox.liu@...il.com>,
	Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [PATCH] KVM: release anon file in failure path of vm creation



On 12/07/2016 11:38, Liu Shuo wrote:
> The failure of create debugfs of VM will return directly without release
> the anon file. It will leak memory and file descriptors, even through
> be not serious.
> 
> Signed-off-by: Liu Shuo <shuo.a.liu@...el.com>
> ---
>  virt/kvm/kvm_main.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 48bd520..8322154 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -49,6 +49,7 @@
>  #include <linux/slab.h>
>  #include <linux/sort.h>
>  #include <linux/bsearch.h>
> +#include <linux/syscalls.h>
>  
>  #include <asm/processor.h>
>  #include <asm/io.h>
> @@ -3067,6 +3068,7 @@ static int kvm_dev_ioctl_create_vm(unsigned long type)
>  
>  	if (kvm_create_vm_debugfs(kvm, r) < 0) {
>  		kvm_put_kvm(kvm);
> +		sys_close(r);
>  		return -ENOMEM;
>  	}
>  
> 

Thanks, applied to kvm/master.

Paolo