From: Greg KH <gregkh@linuxfoundation.org>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Cc: stable@vger.kernel.org, Will.Deacon@arm.com, Robin.Murphy@arm.com
Subject: Re: [PATCH v4.4.y] iommu/arm-smmu-v3: Don't free page table ops twice
Date: Wed, 10 Jan 2018 20:13:42 +0100 [thread overview]
Message-ID: <20180110191342.GA18619@kroah.com> (raw)
In-Reply-To: <20180110183711.16655-1-jean-philippe.brucker@arm.com>
On Wed, Jan 10, 2018 at 06:37:11PM +0000, Jean-Philippe Brucker wrote:
> commit 57d72e159b60456c8bb281736c02ddd3164037aa upstream.
>
> Kasan reports a double free when finalise_stage_fn fails: the io_pgtable
> ops are freed by arm_smmu_domain_finalise and then again by
> arm_smmu_domain_free. Prevent this by leaving pgtbl_ops empty on failure.
>
> Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices")
> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
> ---
>
> The whitespaces got corrupted last time, sorry about that. Let's hope
> this one works.
It worked, thanks, now queued up.
greg k-h
prev parent reply other threads:[~2018-01-10 19:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-07 8:35 FAILED: patch "[PATCH] iommu/arm-smmu-v3: Don't free page table ops twice" failed to apply to 4.4-stable tree gregkh
2018-01-08 14:56 ` Jean-Philippe Brucker
2018-01-10 16:30 ` gregkh
2018-01-10 18:37 ` [PATCH v4.4.y] iommu/arm-smmu-v3: Don't free page table ops twice Jean-Philippe Brucker
2018-01-10 19:13 ` Greg KH [this message]
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