** Changed in: intel
Status: New => Invalid
** Information type changed from Public to Private
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Title:
[TGL][ADL] Enable
@Canonical,
After speaking to CET experts at Intel, these CET kernel patches are not
needed anymore since the feature is still in development and future
directions might change. Hence closing this LP as Invalid
** Changed in: linux-intel (Ubuntu Focal)
Status: New => Invalid
** Changed
@Dimitri
Intel has done a few experiments to enable CET on Ubuntu 20.04. Here are
some details:
As my experiment in ubuntu 20.04, the glibc should be update into 2.34.
And busybox should be build on glibc 2.34 (to create initramfs during install
kernel).
Then ubuntu 20.04 can start, and cet
@Dimitri John Ledkov (xnox)
I am working on the kernel side. @SACHIN MOKASHI Could you please
provide info about glibc CET support?
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Title:
I had a poke at this, and although the cet-backport.diff file is present
in the source package, it is not actually applied and hasn't been since
some time in Groovy's development cycle afaict. This makes sense because
also afaict, this all went upstream in glibc 2.32, which was the version
in
@chaoqin
In https://bugs.launchpad.net/intel/+bug/1842239, the glibc patches
point at https://gitlab.com/x86-glibc/glibc/-/commits/users/hjl/cet/2.31
which we have been applying. Currently we ship them as a backported
patch see
@Dimitri John Ledkov (xnox)
Yes, it needs to patch glibc for CET support as in bug
https://bugs.launchpad.net/intel/+bug/1842239
Could you please share the commit ID that is still needed? These patches
listed in the bug are based on v5.13.
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@ Chao Qin (chaoqin) @anthonywong
Do we also need to patch glibc to turn on CET support? Most of Ubuntu
binaries have CET enabled, but I thought there was still a patch needed
to turn the CET support on due to changes in the CET patches done as per
kernel upstream feedback. Or is this patch
** Tags removed: verification-failed-focal
** Tags added: verification-done-focal
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Title:
[TGL][ADL] Enable CET(Control-flow Enforcement
** Also affects: intel/lookout-canyon
Importance: Undecided
Status: New
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Title:
[TGL][ADL] Enable CET(Control-flow Enforcement
** Tags removed: verification-done-focal
** Tags added: verification-failed-focal
** Changed in: linux-intel (Ubuntu Focal)
Assignee: Alex Hung (alexhung) => (unassigned)
** Changed in: linux-intel (Ubuntu)
Assignee: Alex Hung (alexhung) => (unassigned)
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** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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Title:
[TGL][ADL] Enable CET(Control-flow Enforcement
This bug is awaiting verification that the linux-
intel-5.13/5.13.0-1006.6 kernel in -proposed solves the problem. Please
test the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-focal' to 'verification-
done-focal'. If the problem still
** Description changed:
Description
Enable Tiger Lake ROP CET(Control-flow Enforcement Technology)
An upcoming Intel® processor family feature that counters
return/jump-oriented programming (ROP) attacks
- Hardware: Tiger Lake
+ Hardware: Tiger Lake & Alder Lake
Target Release:
** Summary changed:
- [TGL] Enable Tiger Lake ROP CET(Control-flow Enforcement Technology)
+ [TGL][ADL] Enable CET(Control-flow Enforcement Technology)
** Tags added: iotg-adl
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