FWIW, this not only affects the 5.15/jammy kernel series, but also at least 6.2/lunar: https://github.com/openzfs/zfs/issues/15223 , and also affects non-SGX use cases like OpenZFS features that benefit from AVX support (raidz, encryption, ..)
** Bug watch added: github.com/openzfs/zfs/issues #15223 https://github.com/openzfs/zfs/issues/15223 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 Jammy: In Progress 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2034745/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
