Lu Baolu 1a3f2fd7fc iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb() ... Lock(&iommu->lock) without disabling irq causes lockdep warnings. [ 12.703950] ======================================================== [ 12.703962] WARNING: possible irq lock inversion dependency detected [ 12.703975] 5.9.0-rc6+ #659 Not tainted [ 12.703983] -------------------------------------------------------- [ 12.703995] systemd-udevd/284 just changed the state of lock: [ 12.704007] ffffffffbd6ff4d8 (device_domain_lock){..-.}-{2:2}, at: iommu_flush_dev_iotlb.part.57+0x2e/0x90 [ 12.704031] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 12.704043] (&iommu->lock){+.+.}-{2:2} [ 12.704045] and interrupts could create inverse lock ordering between them. [ 12.704073] other info that might help us debug this: [ 12.704085] Possible interrupt unsafe locking scenario: [ 12.704097] CPU0 CPU1 [ 12.704106] ---- ---- [ 12.704115] lock(&iommu->lock); [ 12.704123] local_irq_disable(); [ 12.704134] lock(device_domain_lock); [ 12.704146] lock(&iommu->lock); [ 12.704158] <Interrupt> [ 12.704164] lock(device_domain_lock); [ 12.704174] *** DEADLOCK *** Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20200927062428.13713-1-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>		2020-10-01 14:54:17 +02:00
..
amd	iommu/amd: Fix the overwritten field in IVMD header	2020-10-01 14:11:36 +02:00
arm	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
intel	iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()	2020-10-01 14:54:17 +02:00
dma-iommu.c	dma-pool: fix coherent pool allocations for IOMMU mappings	2020-08-14 16:27:00 +02:00
exynos-iommu.c	iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()	2020-09-24 10:48:29 +02:00
fsl_pamu_domain.c	iommu/pamu: Use dev_iommu_priv_get/set()	2020-06-30 11:59:48 +02:00
fsl_pamu_domain.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266	2019-06-05 17:30:28 +02:00
fsl_pamu.c	iommu/pamu: Use kzfree() in fsl_pamu_probe()	2020-06-30 10:47:38 +02:00
fsl_pamu.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266	2019-06-05 17:30:28 +02:00
hyperv-iommu.c	irqdomain/treewide: Keep firmware node unconditionally allocated	2020-07-14 17:44:42 +02:00
io-pgtable-arm-v7s.c	iommu: Add gfp parameter to io_pgtable_ops->map()	2020-07-24 14:29:47 +02:00
io-pgtable-arm.c	Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next	2020-07-29 14:42:00 +02:00
io-pgtable.c	iommu/io-pgtable-arm: Rationalise TCR handling	2020-01-10 15:52:24 +00:00
ioasid.c	iommu/ioasid: Add custom allocators	2019-10-15 13:34:25 +02:00
iommu-debugfs.c	iommu: Fix IOMMU debugfs fallout	2019-02-26 11:15:58 +01:00
iommu-sysfs.c	drivers/iommu: Export core IOMMU API symbols to permit modular drivers	2019-12-23 14:06:05 +01:00
iommu-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
iommu.c	Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next	2020-07-29 14:42:00 +02:00
iova.c	iommu/iova: Don't BUG on invalid PFNs	2020-06-30 10:42:27 +02:00
ipmmu-vmsa.c	IOMMU Updates for Linux v5.9	2020-08-11 14:13:24 -07:00
irq_remapping.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
irq_remapping.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333	2019-06-05 17:37:06 +02:00
Kconfig	IOMMU Updates for Linux v5.9	2020-08-11 14:13:24 -07:00
Makefile	More Arm SMMU updates for 5.9	2020-07-29 14:47:37 +02:00
msm_iommu_hw-8xxx.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267	2019-06-05 17:30:29 +02:00
msm_iommu.c	iommu: Add gfp parameter to io_pgtable_ops->map()	2020-07-24 14:29:47 +02:00
msm_iommu.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267	2019-06-05 17:30:29 +02:00
mtk_iommu_v1.c	iommu/mediatek: Do no use dev->archdata.iommu	2020-06-30 11:59:48 +02:00
mtk_iommu.c	Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next	2020-07-29 14:42:00 +02:00
mtk_iommu.h	Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next	2020-07-29 14:42:00 +02:00
of_iommu.c	of/device: Add input id to of_dma_configure()	2020-07-28 15:51:32 +01:00
omap-iommu-debug.c	iommu/omap: Check for failure of a call to omap_iommu_dump_ctx	2020-07-22 15:02:33 +02:00
omap-iommu.c	Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next	2020-07-29 14:42:00 +02:00
omap-iommu.h	iommu/omap: add support for late attachment of iommu devices	2019-08-09 17:37:10 +02:00
omap-iopgtable.h	iommu/omap: Fix -Woverflow warnings when compiling on 64-bit architectures	2020-03-04 16:24:46 +01:00
rockchip-iommu.c	iommu/rockchip: Use dev_iommu_priv_get/set()	2020-06-30 11:59:48 +02:00
s390-iommu.c	s390 updates for the 5.8 merge window	2020-06-08 12:05:31 -07:00
sun50i-iommu.c	iommu/sun50i: Remove unused variable	2020-06-30 12:05:09 +02:00
tegra-gart.c	iommu/tegra: Use dev_iommu_priv_get/set()	2020-06-30 11:59:48 +02:00
tegra-smmu.c	iommu/tegra: Use dev_iommu_priv_get/set()	2020-06-30 11:59:48 +02:00
virtio-iommu.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00