I reviewed the git logs and there were allot of efi changes in 3.13.0-101. Here is a list:
406bcddd9857 x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag dddbb2cd38ff x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down bf3b58763565 efi: Disable interrupts around EFI calls, not in the epilog/prolog calls 68ac78b66414 x86/efi: Implement a __efi_call_virt macro 76deae345d9e x86/efi: Delete most of the efi_call* macros fe1e82232ed4 UBUNTU: SAUCE: merge with v3.15 5bd4d89ffc2f x86/efi: Rip out phys_efi_get_time() 3f049eaef571 UBUNTU: SAUCE: Merge remote-tracking branch 'tip/x86/efi-mixed' into efi-for-mingo 59ed4b67da79 x86/efi: Wire up CONFIG_EFI_MIXED daa829de21e9 x86/efi: Delete dead code when checking for non-native 6edf5236f210 x86/efi: Split efi_enter_virtual_mode 0dc405eb8e11 x86/efi: Make efi virtual runtime map passing more robust 68c47ffe8bb0 x86/efi: Dump the EFI page table bcdf5feaecae x86/efi: Style neatening f162bc96a0d2 x86/efi: Delete out-of-date comments of efi_query_variable_store 78c8a6942cc5 efi: Set feature flags inside feature init functions c25eaae2c28f efi: Move facility flags to struct efi f27702352afe x86/efi: Quirk out SGI UV f1ef6ec21389 x86/efi: Fix 32-bit fallout c77a8e25d784 UBUNTU: SAUCE: Merge tag 'v3.13-rc7' into x86/efi-kexec to resolve conflicts 63a426527734 x86/efi: Delete superfluous global variables c8adf92ae1a0 x86/efi: Pass necessary EFI data for kexec via setup_data 74bdcac0c014 efi: Export EFI runtime memory mapping to sysfs db7b55fcecc4 efi: Export more EFI table variables to sysfs fd610615acf3 x86/efi: Cleanup efi_enter_virtual_mode() function 4c01cc70618b x86/efi: Fix off-by-one bug in EFI Boot Services reservation 528f2d29e8f1 UBUNTU: SAUCE: Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi a058d6f91746 x86/efi: Check krealloc return value a14015f4799d x86/efi: Runtime services virtual mapping 177ead2c3dff x86/efi: Simplify EFI_DEBUG bf963b4f71da Revert "x86/efi: Fix off-by-one bug in EFI Boot Services reservation" 4a394e4cd9d7 Revert "x86/efi: Runtime services virtual mapping" 033a9865e181 Revert "x86/efi: Check krealloc return value" 11cd444bf961 Revert "x86/efi: Fix 32-bit fallout" be7a87ad04b8 Revert "efi: Disable interrupts around EFI calls, not in the epilog/prolog calls" I think I may have to bisect manually to figure out which of these commits is the culprit. To narrow it down, I built a kernel up to commit 528f2d29e8f1. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1649326/528f2d2 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on your test results. -- 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/1649326 Title: EFI stub loader broken in kernel 3.13.0-101-generic (& later in 3.13 series) Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Confirmed Bug description: The EFI stub loader produces consistent boot errors when booting Trusty starting with version 3.13.0-101-generic. This bug can be reproduced in many ways (using efibootmgr, an EFI shell, rEFInd, etc.). One approach is: 1) Install an EFI shell on the computer and set it as the default boot option using efibootmgr. 2) Copy the kernel and initrd files from /boot to /boot/efi. 3) Rename the kernel file to use a .efi filename extension. 4) Reboot into the EFI shell. 5) Try to launch the kernel with a command like: fs0:\vmlinuz-3.13.0-104-generic.efi ro root=/dev/sda2 initrd=\initrd.img-3.13.0-104-generic The result will be a hung or crashed system. (In VirtualBox, in which I've tested this, the VM produces a "guru meditation" and the session terminates.) I myself have tested only with the 3.13.0-104 kernel; however, reports from others indicate that the problem began with the 3.13.0-101 kernel. See this Kubuntu forum thread for details: https://www.kubuntuforums.net/showthread.php?71204-Cannot-load-latest- kernels Note that early on, this thread focuses on rEFInd; however, the bug can be reproduced with other boot managers, including the EFI shell, as described in the preceding procedure, so I do not believe this is a rEFInd bug. rEFInd relies on the EFI stub loader to boot a Linux kernel, and I believe it's this component that's failing. The problem does NOT occur when using GRUB to launch the kernel. (GRUB does not rely on the EFI stub loader.) I have NOT encountered the problem with Xenial and its 4.4.0-series kernels (last tested: 4.4.0-53-generic) or Yakkety and its 4.8.0-series kernels (last tested: 4.8.0-30-generic). I have not yet tested Trusty with kernels from series beyond 3.13.0. --- ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: rodsmith 1675 F.... pulseaudio CurrentDesktop: LXDE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=561add6d-844e-4428-8378-d92bb112d0fc InstallationDate: Installed on 2014-04-27 (960 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lsusb: Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-106-generic root=UUID=78ff568b-2c22-4b31-9e0c-72703dca4460 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-106.153-generic 3.13.11-ckt39 RelatedPackageVersions: linux-restricted-modules-3.13.0-106-generic N/A linux-backports-modules-3.13.0-106-generic N/A linux-firmware 1.127.22 RfKill: Tags: trusty Uname: Linux 3.13.0-106-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649326/+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
