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0caa7616a6
linux/drivers/iommu
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Aaron Campbell 0caa7616a6 iommu/vt-d: Fix infinite loop in free_all_cpu_cached_iovas 
Per VT-d spec Section 10.4.2 ("Capability Register"), the maximum
number of possible domains is 64K; indeed this is the maximum value
that the cap_ndoms() macro will expand to.  Since the value 65536
will not fix in a u16, the 'did' variable must be promoted to an
int, otherwise the test for < 65536 will always be true and the
loop will never end.

The symptom, in my case, was a hung machine during suspend.

Fixes: 3bd4f9112f ("iommu/vt-d: Fix overflow of iommu->domains array")
Signed-off-by: Aaron Campbell <aaron@monkey.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-07-04 13:34:52 +02:00
..
amd_iommu_init.c iommu/amd: Initialize devid variable before using it 2016-06-27 13:24:46 +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: Remove statistics code 2016-05-09 16:58:37 +02:00
amd_iommu_v2.c mm/core: Do not enforce PKEY permissions on remote mm access 2016-02-18 19:46:28 +01:00
amd_iommu.c IOMMU Updates for Linux v4.7 2016-05-19 17:07:04 -07:00
arm-smmu-v3.c iommu/arm-smmu: Wire up map_sg for arm-smmu-v3 2016-06-13 11:00:59 +02:00
arm-smmu.c remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
dma-iommu.c iommu/dma: Finish optimising higher-order allocations 2016-05-09 15:33:29 +02:00
dmar.c iommu/vt-d: Improve fault handler error messages 2016-04-05 16:22:42 +02:00
exynos-iommu.c iommu/exynos: Use proper readl/writel register interface 2016-02-29 16:44:24 +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
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
intel_irq_remapping.c SVM fixes for Linux 4.5 2016-02-16 08:04:06 -08:00
intel-iommu.c iommu/vt-d: Fix infinite loop in free_all_cpu_cached_iovas 2016-07-04 13:34:52 +02:00
intel-svm.c iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts 2016-02-15 12:42:38 +00:00
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: Support IOMMU_MMIO flag 2016-04-07 15:07:50 +02:00
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 IOMMU Updates for Linux v4.7 2016-05-19 17:07:04 -07:00
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 'arm/io-pgtable', 'arm/rockchip', 'arm/omap', 'x86/vt-d', 'ppc/pamu', 'core' and 'x86/amd' into next 2016-05-09 19:39:17 +02:00
Makefile iommu/mediatek: Add mt8173 IOMMU driver 2016-02-25 16:49:08 +01:00
msm_iommu_dev.c iommu/msm: Use platform_register/unregister_drivers() 2015-12-14 15:51:21 +01:00
msm_iommu_hw-8xxx.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
msm_iommu.c iommu/msm: Use BUG_ON instead of if () BUG() 2015-08-13 19:50:51 +02:00
msm_iommu.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
mtk_iommu.c Merge branches 'arm/io-pgtable', 'arm/rockchip', 'arm/omap', 'x86/vt-d', 'ppc/pamu', 'core' and 'x86/amd' into next 2016-05-09 19:39:17 +02:00
of_iommu.c iommu: of: enforce const-ness of struct iommu_ops 2016-05-09 15:33:29 +02:00
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: Fix zap cache during device attach 2016-06-15 12:03:00 +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