Tested the proposed Kernel 4.15.0-56 and could boot as PVH-Guest. Changed Tag to verification-done-bionic.
** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- 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/1829378 Title: Kernel 4.15.0-50 or newer wont boot as Xen-DomU with PVH Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Fix Committed Bug description: === SRU Justification === [Impact] NULL pointer dereference in acpi_quirk_matches_bios_ids() renders kernel unbootable. [Fix] It's a regression caused by commit abd273f52766 ("UBUNTU: SAUCE: ACPI / bus: Add some Lenovo laptops in list of acpi table term list"). When both bios_vendor and bios_ver are NULL then a NULL string is passed to strncmp() and the issue occurs. VMs may not provides string bios_vendor or bios_ver, so bail out early when either bios_vendor or bios_ver is NULL. [Test] User reported the test kernel with proposed fix solves the issue. [Regression Potenial] Low. It's quite trivial so I don't think it'll regress anything. === Original Bug Report === After upgrading HWE-16.04-kernel from 4.15.0-48 to 4.15.0-50 the kernel crashes while booting as PVH-Guest with Xen 4.12 (booting as PV works). Kernel 4.15.0-48 and prior did boot without any problems as PVH. We have the same problem for Ubuntu 18.04 with Kernel 4.15.0-50. Ubunutu 18.04 with HWE-Kernel 4.18.0-20 boots without problems as PVH- DomU. See also https://lists.xenproject.org/archives/html/xen- users/2019-05/msg00010.html To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829378/+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
