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From: linmiaohe <linmiaohe@huawei.com>
To: "maz@kernel.org" <maz@kernel.org>,
	"james.morse@arm.com" <james.morse@arm.com>,
	"julien.thierry.kdev@gmail.com" <julien.thierry.kdev@gmail.com>,
	"suzuki.poulose@arm.com" <suzuki.poulose@arm.com>,
	"christoffer.dall@arm.com" <christoffer.dall@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"eric.auger@redhat.com" <eric.auger@redhat.com>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"will@kernel.org" <will@kernel.org>,
	"andre.przywara@arm.com" <andre.przywara@arm.com>,
	"tglx@linutronix.de" <tglx@linutronix.de>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] KVM: arm: fix missing free_percpu_irq in kvm_timer_hyp_init()
Date: Sat, 30 Nov 2019 09:29:44 +0000
Message-ID: <c7c89488701c4340be6ec8de468c30ea@huawei.com> (raw)

friendly ping ...
> From: Miaohe Lin <linmiaohe@huawei.com>
>
> When host_ptimer_irq request irq resource failed, we forget to release the host_vtimer_irq resource already requested.
> Fix this missing irq release and other similar scenario.
>
> Fixes: 9e01dc76be6a ("KVM: arm/arm64: arch_timer: Assign the phys timer on VHE systems")
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
> ---
>  virt/kvm/arm/arch_timer.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
>
> diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index f182b2380345..73867f97040c 100644
> --- a/virt/kvm/arm/arch_timer.c
> +++ b/virt/kvm/arm/arch_timer.c
> @@ -935,7 +935,7 @@ int kvm_timer_hyp_init(bool has_gic)
>  					    kvm_get_running_vcpus());
>  		if (err) {
>  			kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
> -			goto out_free_irq;
> +			goto out_free_vtimer_irq;
>  		}
>  
>  		static_branch_enable(&has_gic_active_state);
> @@ -960,7 +960,7 @@ int kvm_timer_hyp_init(bool has_gic)
>  		if (err) {
>  			kvm_err("kvm_arch_timer: can't request ptimer interrupt %d (%d)\n",
>  				host_ptimer_irq, err);
> -			return err;
> +			goto out_disable_gic_state;
>  		}
>  
>  		if (has_gic) {
> @@ -968,7 +968,7 @@ int kvm_timer_hyp_init(bool has_gic)
>  						    kvm_get_running_vcpus());
>  			if (err) {
>  				kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
> -				goto out_free_irq;
> +				goto out_free_ptimer_irq;
>  			}
>  		}
>  
> @@ -977,15 +977,22 @@ int kvm_timer_hyp_init(bool has_gic)
>  		kvm_err("kvm_arch_timer: invalid physical timer IRQ: %d\n",
>  			info->physical_irq);
>  		err = -ENODEV;
> -		goto out_free_irq;
> +		goto out_disable_gic_state;
>  	}
>  
>  	cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING,
>  			  "kvm/arm/timer:starting", kvm_timer_starting_cpu,
>  			  kvm_timer_dying_cpu);
>  	return 0;
> -out_free_irq:
> +
> +out_free_ptimer_irq:
> +	free_percpu_irq(host_ptimer_irq, kvm_get_running_vcpus());
> +out_disable_gic_state:
> +	if (has_gic)
> +		static_branch_disable(&has_gic_active_state);
> +out_free_vtimer_irq:
>  	free_percpu_irq(host_vtimer_irq, kvm_get_running_vcpus());
> +
>  	return err;
>  }
>  
> --
> 2.19.1

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-30  9:29 linmiaohe [this message]
  -- strict thread matches above, loose matches on Subject: below --
2019-11-23  2:30 linmiaohe

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