Messages in this thread |  | | Date | Mon, 16 Dec 2019 13:57:57 -0700 | From | Jerry Snitselaar <> | Subject | panic in dmar_remove_one_dev_info |
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HP is seeing a panic on gen9 dl360 and dl560 while testing these other changes we've been eorking on. I just took an initial look, but have to run to a dentist appointment so couldn't dig too deep. It looks like the device sets dev->archdata.iommu to DEFER_DEVICE_DOMAIN_INFO in intel_iommu_add_device, and then it needs a private domain so dmar_remove_one_dev_info gets called. That code path ends up trying to use DEFER_DEVICE_DOMAIN_INFO as a pointer. I don't need if there just needs to be a check in there to bail out if it sees DEFER_DEVICE_DOMAIN_INFO, or if something more is needed. I'll look at it some more when I get back home.
Regards, Jerry
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