From: Vasant Hegde <vasant.hegde@amd.com>
To: Ruoyu Wang <ruoyuw560@gmail.com>, Joerg Roedel <joro@8bytes.org>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Wei Huang <wei.huang2@amd.com>
Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iommu/amd: Fix PCI device reference leak in PPR handling
Date: Sat, 22 Aug 2026 19:39:54 +0530 [thread overview]
Message-ID: <dd1d8d3b-030f-45bd-aaa7-e8760268b2dd@amd.com> (raw)
In-Reply-To: <20260814133938.1385879-1-ruoyuw560@gmail.com>
On 8/14/2026 7:09 PM, Ruoyu Wang wrote:
> [You don't often get email from ruoyuw560@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> pci_get_domain_bus_and_slot() takes a reference on the returned PCI
> device. iommu_call_iopf_notifier() fails to release it after either
> reporting a valid PPR fault or completing a rejected request. Each
> handled request therefore leaks a reference and can prevent the PCI
> device from being released.
>
> Call pci_dev_put() after the final use of the lookup reference on both
> paths.
This was recently fixed by commit af3b69b16383.
-Vasant
next prev parent reply other threads:[~2026-08-22 14:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 13:39 [PATCH] iommu/amd: Fix PCI device reference leak in PPR handling Ruoyu Wang
2026-08-16 14:48 ` Markus Elfring
2026-08-22 14:09 ` Vasant Hegde [this message]
2026-08-23 6:20 ` Markus Elfring
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