Public bug reported:
[Impact]
When no acpi hid match the device, there will be a NULL dereference in amd
iommu.
It will make system hang.
[Fix]
Check NULL pointer before using it.
[Test]
Tested on several AMD platforms, bugs are fixed with this patch.
[Regression Potential]
Low, upstream fix, Verified on several platforms.
It should be safe.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: originate-from-1818010 sutton
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https://bugs.launchpad.net/bugs/1820990
Title:
[SRU][B/B-OEM/C/D] Fix AMD IOMMU NULL dereference
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