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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-10-14 09:37:44 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-10-15 10:17:54 +0200 |
| commit | 6e02a277f1db24fa039e23783c8921c7b0e5b1b3 (patch) | |
| tree | 551d0f1388d929753564d6746ad86a7b0ca481a1 /drivers/iommu/intel/iommu.c | |
| parent | 8e8a69bc776ad7d70357237d5a67bc904c4193aa (diff) | |
| download | linux-6e02a277f1db24fa039e23783c8921c7b0e5b1b3.tar.gz linux-6e02a277f1db24fa039e23783c8921c7b0e5b1b3.tar.bz2 linux-6e02a277f1db24fa039e23783c8921c7b0e5b1b3.zip | |
iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices
Previously, the domain_context_clear() function incorrectly called
pci_for_each_dma_alias() to set up context entries for non-PCI devices.
This could lead to kernel hangs or other unexpected behavior.
Add a check to only call pci_for_each_dma_alias() for PCI devices. For
non-PCI devices, domain_context_clear_one() is called directly.
Reported-by: Todd Brandt <todd.e.brandt@intel.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219363
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219349
Fixes: 9a16ab9d6402 ("iommu/vt-d: Make context clearing consistent with context mapping")
Cc: stable@vger.kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20241014013744.102197-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 9f6b0780f2ef..e860bc9439a2 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -3340,8 +3340,10 @@ static int domain_context_clear_one_cb(struct pci_dev *pdev, u16 alias, void *op */ static void domain_context_clear(struct device_domain_info *info) { - if (!dev_is_pci(info->dev)) + if (!dev_is_pci(info->dev)) { domain_context_clear_one(info, info->bus, info->devfn); + return; + } pci_for_each_dma_alias(to_pci_dev(info->dev), &domain_context_clear_one_cb, info); |