Alexey Kardashevskiy d00a150404 vfio/spapr/nvlink2: Skip unpinning pages on error exit ... [ Upstream commit 338b4e10f9 ] The nvlink2 subdriver for IBM Witherspoon machines preregisters GPU memory in the IOMMI API so KVM TCE code can map this memory for DMA as well. This is done by mm_iommu_newdev() called from vfio_pci_nvgpu_regops::mmap. In an unlikely event of failure the data->mem remains NULL and since mm_iommu_put() (which unregisters the region and unpins memory if that was regular memory) does not expect mem=NULL, it should not be called. This adds a check to only call mm_iommu_put() for a valid data->mem. Fixes: 7f92891778 ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver") Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-02-24 08:36:43 +01:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
trace.h	vfio/pci: Cleanup license mess	2019-01-22 11:06:05 -07:00
vfio_pci.c	vfio_pci: Restore original state on release	2019-08-22 14:53:06 -06:00
vfio_pci_config.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio_pci_igd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio_pci_intrs.c	vfio/pci: call irq_bypass_unregister_producer() before freeing irq	2019-12-21 11:04:48 +01:00
vfio_pci_nvlink2.c	vfio/spapr/nvlink2: Skip unpinning pages on error exit	2020-02-24 08:36:43 +01:00
vfio_pci_private.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio_pci_rdwr.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00