From: Jerry Snitselaar <jsnitsel@redhat.com>
To: iommu@lists.linux-foundation.org,
Lu Baolu <baolu.lu@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: panic in dmar_remove_one_dev_info
Date: Mon, 16 Dec 2019 13:57:57 -0700 [thread overview]
Message-ID: <20191216205757.x4hewnduopbo4mpv@cantor> (raw)
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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next reply other threads:[~2019-12-16 20:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-16 20:57 Jerry Snitselaar [this message]
2019-12-17 6:13 ` panic in dmar_remove_one_dev_info Jerry Snitselaar
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