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linux-hardened/drivers/iommu
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Robin Murphy 3ec60043f7 iommu/dma: Don't put uninitialised IOVA domains 
Due to the limitations of having to wait until we see a device's DMA
restrictions before we know how we want an IOVA domain initialised,
there is a window for error if a DMA ops domain is allocated but later
freed without ever being used. In that case, init_iova_domain() was
never called, so calling put_iova_domain() from iommu_put_dma_cookie()
ends up trying to take an uninitialised lock and crashing.

Make things robust by skipping the call unless the IOVA domain actually
has been initialised, as we probably should have done from the start.

Fixes: 0db2e5d18f ("iommu: Implement common IOMMU ops for DMA mapping")
Cc: stable@vger.kernel.org
Reported-by: Nate Watterson <nwatters@codeaurora.org>
Reviewed-by: Nate Watterson <nwatters@codeaurora.org>
Tested-by: Nate Watterson <nwatters@codeaurora.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-08-09 17:31:39 +02:00
..
amd_iommu.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
amd_iommu_init.c iommu/amd: Fix unity mapping initialization race 2016-07-06 18:04:55 +02:00
amd_iommu_proto.h IOMMU Updates for Linux v4.2 2015-06-23 18:27:19 -07:00
amd_iommu_types.h iommu/amd: Use container_of to get dma_ops_domain 2016-07-14 10:21:57 +02:00
amd_iommu_v2.c IOMMU Updates for Linux v4.8 2016-08-01 07:25:10 -04:00
arm-smmu-v3.c Merge branch 'for-joerg/arm-smmu/updates' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into arm/smmu 2016-07-12 13:26:59 +02:00
arm-smmu.c iommu/arm-smmu: Use devm_request_irq and devm_free_irq 2016-07-06 18:31:51 +01:00
dma-iommu.c iommu/dma: Don't put uninitialised IOVA domains 2016-08-09 17:31:39 +02:00
dmar.c IOMMU Updates for Linux v4.8 2016-08-01 07:25:10 -04:00
exynos-iommu.c iommu/exynos: update to use iommu big-endian 2016-06-21 11:59:03 +02:00
fsl_pamu.c powerpc/fsl: Move fsl_guts.h out of arch/powerpc 2015-10-21 18:05:50 -05:00
fsl_pamu.h iommu/fsl: Various cleanups 2015-02-03 18:47:18 +01:00
fsl_pamu_domain.c iommu/fsl: Convert to device_group call-back 2015-10-22 00:00:49 +02:00
fsl_pamu_domain.h iommu/fsl: Make use of domain_alloc and domain_free 2015-03-31 15:32:14 +02:00
intel-iommu.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
intel-svm.c mm: do not pass mm_struct into handle_mm_fault 2016-07-26 16:19:19 -07:00
intel_irq_remapping.c SVM fixes for Linux 4.5 2016-02-16 08:04:06 -08:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm-v7s: Support IOMMU_MMIO flag 2016-04-07 15:07:50 +02:00
io-pgtable-arm.c iommu/io-pgtable-arm: Fix iova_to_phys for block entries 2016-07-01 14:04:37 +01:00
io-pgtable.c iommu/io-pgtable: Fix a brace coding style issue. 2016-04-05 15:34:29 +02:00
io-pgtable.h iommu/io-pgtable: Add MTK 4GB mode in Short-descriptor 2016-04-05 15:39:37 +02:00
iommu-sysfs.c iommu: Fix compile error in iommu-sysfs.c 2014-07-07 12:01:21 +02:00
iommu-traces.c iommu: Add iommu_error class event to iommu trace 2013-09-25 11:07:04 +02:00
iommu.c Merge branches 'x86/amd', 'x86/vt-d', 'arm/exynos', 'arm/mediatek', 'arm/msm', 'arm/rockchip', 'arm/smmu' and 'core' into next 2016-07-26 16:02:37 +02:00
iova.c iommu/iova: Disable preemption around use of this_cpu_ptr() 2016-06-27 13:07:45 +02:00
ipmmu-vmsa.c Merge branches 's390', 'arm/renesas', 'arm/msm', 'arm/shmobile', 'arm/smmu', 'x86/amd' and 'x86/vt-d' into next 2016-01-19 15:30:43 +01:00
irq_remapping.c x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage 2016-04-13 11:37:41 +02:00
irq_remapping.h iommu, x86: Setup Posted-Interrupts capability for Intel iommu 2015-06-12 11:33:52 +02:00
Kconfig Merge branches 'x86/amd', 'x86/vt-d', 'arm/exynos', 'arm/mediatek', 'arm/msm', 'arm/rockchip', 'arm/smmu' and 'core' into next 2016-07-26 16:02:37 +02:00
Makefile Merge branches 'x86/amd', 'x86/vt-d', 'arm/exynos', 'arm/mediatek', 'arm/msm', 'arm/rockchip', 'arm/smmu' and 'core' into next 2016-07-26 16:02:37 +02:00
msm_iommu.c iommu/msm: use generic ARMV7S short descriptor pagetable ops 2016-06-21 13:57:13 +02:00
msm_iommu.h iommu/msm: Add DT adaptation 2016-06-21 13:56:00 +02:00
msm_iommu_hw-8xxx.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
mtk_iommu.c iommu/mediatek: move the common struct into header file 2016-06-21 11:36:19 +02:00
mtk_iommu.h iommu/mediatek: Mark static functions in headers inline 2016-08-09 15:46:46 +02:00
mtk_iommu_v1.c iommu/mediatek: Make mtk_iommu_pm_ops static 2016-06-21 11:54:06 +02:00
of_iommu.c of: iommu: make of_iommu_init() postcore_initcall_sync 2016-06-23 14:57:40 -05:00
omap-iommu-debug.c iommu/omap: Align code with open parenthesis 2016-04-05 17:53:20 +02:00
omap-iommu.c iommu/omap: Use WARN_ON for page table alignment check 2016-04-05 17:53:20 +02:00
omap-iommu.h iommu/omap: Add support for configuring dsp iommus on DRA7xx 2015-10-14 14:35:47 +02:00
omap-iopgtable.h iommu/omap: Use BIT(x) macros in omap-iopgtable.h 2015-08-03 16:04:42 +02:00
rockchip-iommu.c iommu/rockchip: Prepare to support generic DMA mapping 2016-06-27 14:50:08 +02:00
s390-iommu.c iommu/s390: Fix sparse warnings 2015-11-26 14:41:01 +01:00
tegra-gart.c Merge branches 'iommu/fixes', 'x86/vt-d', 'x86/amd', 'arm/smmu', 'arm/tegra' and 'core' into next 2015-04-02 13:33:19 +02:00
tegra-smmu.c iommu/tegra-smmu: Parameterize number of TLB lines 2015-08-13 17:05:28 +02:00