[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
While working on this bug a patched kernel was created and made available here: https://people.canonical.com/~fheimes/lp1896726/ But it's a patched groovy kernel only, since the commit/patch doesn't cleanly apply to focal master-next: git apply --stat ~/0001-mm-gup-fix-gup_fast-with-dynamic-page-table-folding.patch arch/s390/include/asm/pgtable.h | 42 --- include/linux/pgtable.h | 10 + mm/gup.c| 18 - 3 files changed, 49 insertions(+), 21 deletions(-) git apply --check ~/0001-mm-gup-fix-gup_fast-with-dynamic-page-table-folding.patch error: patch failed: arch/s390/include/asm/pgtable.h:1260 error: arch/s390/include/asm/pgtable.h: patch does not apply error: include/linux/pgtable.h: No such file or directory Please always check if a patch/commit applies cleanly to the master-next tree of the target Ubuntu kernel releases. If not double check if any further commits are needed or if a even a backport is required. There is btw. a significant regression risk associated to this patch, since it touches general memory management (page table handling and address translation) and gup code - and this includes common code, where special care taking is needed, since it may potentially affect millions of installations across all supported platforms. Hence my recommendation is to bring this in with the help of an upstream stable release update (https://www.kernel.org/doc/html/v5.4/process /stable-kernel-rules.html) to upstream kernel 5.4 - which will then be (more or less) automatically be picked up by the Canonical kernel team for focal. ** Changed in: linux (Ubuntu Groovy) Status: New => Triaged ** Changed in: linux (Ubuntu Focal) Status: New => Incomplete ** Changed in: ubuntu-z-systems Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
** Also affects: linux (Ubuntu Groovy) Importance: Undecided Assignee: Frank Heimes (fheimes) Status: New ** Also affects: linux (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Frank Heimes (fheimes) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
--- Comment From heinz-werner_se...@de.ibm.com 2020-09-23 05:27 EDT--- Severity adapted to critical. Please be aware of that. Many thx ** Tags removed: severity-medium ** Tags added: severity-critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
The patch/commit mentioned landed in linux-next (just tagged with next-20200921). ** Changed in: ubuntu-z-systems Importance: Undecided => Medium ** Changed in: ubuntu-z-systems Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team) ** Changed in: linux (Ubuntu) Assignee: Skipper Bug Screeners (skipper-screen-team) => Frank Heimes (fheimes) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
** Also affects: ubuntu-z-systems Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1896726] Re: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution)
** Summary changed: - Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) + [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896726 Title: [UBUNTU 20.04.1]Secure guest (qemu) crash during boot (mostly) but also while running workload (rare) (secure execution) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1896726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
