forked from luck/tmp_suning_uos_patched
IOMMU Fix for Linux v5.1-rc1
- Fix a NULL-pointer dereference issue in the ACPI device matching code of the AMD IOMMU driver -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAlyLxm0ACgkQK/BELZcB GuM/1Q//VjiedvREnuin2vx+XXsK1qxFPDNFnUegFUI/DdhzRz3kFhmwHlA4/8+Q AxIi3RQYHPBtOyAagcuWeSmjzef2mRLwFcADHhlCZYaBPx9E2rk455VXoCFVGIgj s7gTtVcdDphxh6SUCbX9KIwET/go+WGw/tVYcDcCqtGONKSiOOmRLWqdrmvbKQwz DOOIMYCZzL7t00oFhjZK/YMu8Yy8VgdeCkHRIQgJyrAxNq0CcJaRvTeA931UIkQr RC/npS5p/GEXGQLExY8tWDq78LLRfSzovIS1URBfm8eRRfnLUUCdbn3r2CX7Oxnb ouEteLKEeXPBuHQtlPYRxNWsCpOn99rMYkS7O6luwnBU6WPCvwiTgMb3AaI65QTV kDMfSABYu1SJ3W/2MaH+Nk+5XGjgk3aWNkvU7s/LqDkcQ0tx2N98XQEyDNj9jY0W lYyYQrpDEOYOgJZZ2ih/Vm1mUaOK1IolJOjFFIoZ9ov1jcbkwf+8dXaJ+JZaOKar UPzJsYhA3DUJ5QzSf0tTviIy3lO2fIB08C3eL7ZWxQVLd3MaOR4ufUMZUvFcvfYK MNwoWwiKghNBeiwjmR2VmUkOdYiWlsmq3sxiecV/NFZX76rMCt1neZTqyrOD/KV/ SiJbwYfVmDSlkokEfGrqNpfSmJsUYcDBurfokrdd+LInRSUjlAg= =squ6 -----END PGP SIGNATURE----- Merge tag 'iommu-fix-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU fix from Joerg Roedel: "Fix a NULL-pointer dereference issue in the ACPI device matching code of the AMD IOMMU driver" * tag 'iommu-fix-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Fix NULL dereference bug in match_hid_uid
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323ea40ff6
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@ -140,10 +140,14 @@ static struct lock_class_key reserved_rbtree_key;
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static inline int match_hid_uid(struct device *dev,
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struct acpihid_map_entry *entry)
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{
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struct acpi_device *adev = ACPI_COMPANION(dev);
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const char *hid, *uid;
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hid = acpi_device_hid(ACPI_COMPANION(dev));
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uid = acpi_device_uid(ACPI_COMPANION(dev));
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if (!adev)
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return -ENODEV;
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hid = acpi_device_hid(adev);
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uid = acpi_device_uid(adev);
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if (!hid || !(*hid))
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return -ENODEV;
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