This bug is awaiting verification that the linux-mtk/5.15.0-1030.34
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-jammy-linux-mtk' to 'verification-done-jammy-
linux-mtk'. If the problem still exists, change the tag 'verification-
needed-jammy-linux-mtk' to 'verification-failed-jammy-linux-mtk'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-mtk-v2 
verification-needed-jammy-linux-mtk

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https://bugs.launchpad.net/bugs/2034745

Title:
  [regression] Unable to initialize SGX enclaves with XFRM other than 3

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released
Status in linux source package in Jammy:
  Fix Released
Status in linux source package in Lunar:
  Fix Released

Bug description:
  SRU Justification

  [Impact]

  In 5.15.0-1045, only loading enclaves with XFRM set to 3 works,
  sgx_encl_init returns EINVAL. The only reason this wouldn't work
  properly is if sgx_drv_init thinks XSAVE isn't enabled. This works
  fine in 5.15.0-1043.

  Likely cause:
  1045 adds this patch: 
https://github.com/torvalds/linux/commit/b81fac906a8f9e682e513ddd95697ec7a20878d4
 . This later patch indicates that the former patch introduced some ordering 
problems. 
https://github.com/torvalds/linux/commit/2c66ca3949dc701da7f4c9407f2140ae425683a5
 . That later patch isn't applied to 1045.

  [Test Plan]

  User test results pending, but its a fix commit so should likely be
  applied regardless.

  [Regression Potential]

  SGX could continue to fail.

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