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Date: Fri, 27 Oct 2023 15:36:48 -0700
From: Brett Creeley <brett.creeley@....com>
To: <jgg@...pe.ca>, <yishaih@...dia.com>,
<shameerali.kolothum.thodi@...wei.com>, <kevin.tian@...el.com>,
<alex.williamson@...hat.com>, <dan.carpenter@...aro.org>
CC: <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<brett.creeley@....com>, <shannon.nelson@....com>
Subject: [PATCH v3 vfio 0/3] pds/vfio: Fixes for locking bugs
This series contains fixes for locking bugs in the recently introduced
pds-vfio-pci driver. There was an initial bug reported by Dan Carpenter
at:
https://lore.kernel.org/kvm/1f9bc27b-3de9-4891-9687-ba2820c1b390@moroto.mountain/
However, more locking bugs were found when looking into the previously
mentioned issue. So, all fixes are included in this series.
v3:
- Change reset lock from spinlock to mutex
v2:
https://lore.kernel.org/kvm/20231011230115.35719-1-brett.creeley@amd.com/
- Trim the OOPs in the patch commit messages
- Rework patch 3/3 to only unlock the spinlock once
- Destroy the state_mutex in the driver specific vfio_device_ops.release
callback
v1:
https://lore.kernel.org/kvm/20230914191540.54946-1-brett.creeley@amd.com/
Brett Creeley (3):
pds/vfio: Fix spinlock bad magic BUG
pds/vfio: Fix mutex lock->magic != lock warning
pds/vfio: Fix possible sleep while in atomic context
drivers/vfio/pci/pds/pci_drv.c | 4 ++--
drivers/vfio/pci/pds/vfio_dev.c | 30 +++++++++++++++++++++---------
drivers/vfio/pci/pds/vfio_dev.h | 2 +-
3 files changed, 24 insertions(+), 12 deletions(-)
--
2.17.1
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