Robin Murphy 1174ed705d iommu/iova: Don't BUG on invalid PFNs ... [ Upstream commit d3e3d2be68 ] Unlike the other instances which represent a complete loss of consistency within the rcache mechanism itself, or a fundamental and obvious misconfiguration by an IOMMU driver, the BUG_ON() in iova_magazine_free_pfns() can be provoked at more or less any time in a "spooky action-at-a-distance" manner by any old device driver passing nonsense to dma_unmap_*() which then propagates through to queue_iova(). Not only is this well outside the IOVA layer's control, it's also nowhere near fatal enough to justify panicking anyway - all that really achieves is to make debugging the offending driver more difficult. Let's simply WARN and otherwise ignore bogus PFNs. Reported-by: Prakash Gupta <guptap@codeaurora.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Prakash Gupta <guptap@codeaurora.org> Link: https://lore.kernel.org/r/acbd2d092b42738a03a21b417ce64e27f8c91c86.1591103298.git.robin.murphy@arm.com Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-09-03 11:26:43 +02:00
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Kconfig	iommu/vt-d: Make Intel SVM code 64-bit only	2020-07-22 09:33:18 +02:00
Makefile	…
amd_iommu.c	irqdomain/treewide: Keep firmware node unconditionally allocated	2020-07-29 10:18:28 +02:00
amd_iommu.h	…
amd_iommu_debugfs.c	…
amd_iommu_init.c	…
amd_iommu_proto.h	…
amd_iommu_quirks.c	…
amd_iommu_types.h	…
amd_iommu_v2.c	…
arm-smmu-impl.c	…
arm-smmu-v3.c	…
arm-smmu.c	…
arm-smmu.h	…
dma-iommu.c	…
dmar.c	iommu/vt-d: Enable PCI ACS for platform opt in hint	2020-06-30 15:36:58 -04:00
exynos-iommu.c	…
fsl_pamu.c	…
fsl_pamu.h	…
fsl_pamu_domain.c	…
fsl_pamu_domain.h	…
hyperv-iommu.c	irqdomain/treewide: Keep firmware node unconditionally allocated	2020-07-29 10:18:28 +02:00
intel-iommu-debugfs.c	…
intel-iommu.c	iommu/vt-d: Don't apply gfx quirks to untrusted devices	2020-07-16 08:16:35 +02:00
intel-pasid.c	…
intel-pasid.h	…
intel-svm.c	…
intel-trace.c	…
intel_irq_remapping.c	irqdomain/treewide: Free firmware node after domain removal	2020-08-19 08:16:27 +02:00
io-pgtable-arm-v7s.c	…
io-pgtable-arm.c	…
io-pgtable.c	…
iommu-debugfs.c	…
iommu-sysfs.c	…
iommu-traces.c	…
iommu.c	iommu: Fix reference count leak in iommu_group_alloc.	2020-06-03 08:21:28 +02:00
iova.c	iommu/iova: Don't BUG on invalid PFNs	2020-09-03 11:26:43 +02:00
ipmmu-vmsa.c	…
irq_remapping.c	…
irq_remapping.h	…
msm_iommu.c	…
msm_iommu.h	…
msm_iommu_hw-8xxx.h	…
mtk_iommu.c	…
mtk_iommu.h	…
mtk_iommu_v1.c	…
of_iommu.c	…
omap-iommu-debug.c	iommu/omap: Check for failure of a call to omap_iommu_dump_ctx	2020-08-21 13:05:33 +02:00
omap-iommu.c	…
omap-iommu.h	…
omap-iopgtable.h	…
qcom_iommu.c	…
rockchip-iommu.c	…
s390-iommu.c	…
tegra-gart.c	…
tegra-smmu.c	…
virtio-iommu.c	…