Public bug reported:
[Impact]
Upstream kernels since 5.3 fail to boot on the ASUS WS X299 SAGE
motherboard with firmware version 1201. This is the result of an
infinite loop while trying to parse a malformed ACPI table. It is
suspected to affect other ASUS motherboards, but I have no first
hand proof of that.
This is particularly troublesome for bionic HWE installs, which
will then fail to boot after upgrading to the 5.3 series eoan
kernel.
[Test Case]
Try to boot an ASUS WS X299 SAGE computer with firmware version 1201.
Eoan and Focal kernels will fail to boot.
Upstream kernel 5.6-rc1 will boot succressfully.
[Fix]
Cherry pick upstream 2b73ea379624 ("x86/boot: Handle malformed SRAT
tables during early ACPI parsing")
[Regression Potential]
Low. Any system affected by this patch is already failing to boot.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: cherry-pick eoan focal
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https://bugs.launchpad.net/bugs/1862888
Title:
Boot hang on ASUS WS X299 SAGE
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