From: Jason Gunthorpe <jgg@ziepe.ca>
To: Thorsten Blum <thorsten.blum@linux.dev>
Cc: Kevin Tian <kevin.tian@intel.com>, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Pranjal Shrivastava <praan@google.com>,
Nicolin Chen <nicolinc@nvidia.com>,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iommufd/selftest: Fix page leaks in mock_viommu_{init,destroy}
Date: Fri, 13 Mar 2026 13:29:44 -0300 [thread overview]
Message-ID: <20260313162944.GD1704121@ziepe.ca> (raw)
In-Reply-To: <20260312164040.457293-3-thorsten.blum@linux.dev>
On Thu, Mar 12, 2026 at 05:40:42PM +0100, Thorsten Blum wrote:
> mock_viommu_init() allocates two pages using __get_free_pages(..., 1),
> but its error path and mock_viommu_destroy() only release the first page
> using free_page(), leaking the second page. Use free_pages() with the
> matching order instead to avoid any page leaks.
>
> Fixes: 80478a2b450e ("iommufd/selftest: Add coverage for the new mmap interface")
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
> ---
> drivers/iommu/iommufd/selftest.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Applied, thanks
Jason
prev parent reply other threads:[~2026-03-13 16:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-12 16:40 [PATCH] iommufd/selftest: Fix page leaks in mock_viommu_{init,destroy} Thorsten Blum
2026-03-12 18:59 ` Pranjal Shrivastava
2026-03-12 19:56 ` Nicolin Chen
2026-03-13 16:29 ` Jason Gunthorpe [this message]
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