** No longer affects: livecd-rootfs (Ubuntu) ** No longer affects: livecd-rootfs (Ubuntu Focal)
** No longer affects: livecd-rootfs (Ubuntu Groovy) ** No longer affects: livecd-rootfs (Ubuntu Hirsute) -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1900773 Title: Timeout downloading initrd Status in Release Notes for Ubuntu: New Status in grub2 package in Ubuntu: Fix Released Status in grub2 source package in Xenial: Fix Committed Status in grub2 source package in Bionic: Fix Committed Status in grub2 source package in Focal: Fix Committed Status in grub2 source package in Groovy: Fix Committed Status in grub2 source package in Hirsute: Fix Released Bug description: [Impact] GRUB times out when downloading downloading large files w/ tftp. This notably breaks subiquity based PXE installs which feature a large initrd. (Observed on several arm64 platforms, though the symptom is not arch-specific). [Test Case] Simple test case using an x86 UEFI VM: Place a kernel/ramdisk on a tftp server. Inflate the initrd or kernel to 87M, e.g.: dd if=/dev/zero of=initrd.img bs=1M count=87 dd if=initrd.img.orig of=initrd.img conv=notrunc Success looks like: Shell> fs0: FS0:\> \efi\grubnetx64.efi grub> net_dhcp efinet0 grub> linux (tftp,192.168.122.1)/vmlinuz.orig console=ttyS0,115200n8 grub> initrd (tftp,192.168.122.1)/initrd.img grub> Failure looks like: grub> net_dhcp efinet0 grub> linux (tftp,192.168.122.1)/vmlinuz.orig console=ttyS0,115200n8 grub> initrd (tftp,192.168.122.1)/initrd.img !!!! X64 Exception Type - 06(#UD - Invalid Opcode) CPU Apic ID - 00000000 !!!! RIP - 0000000000099080, CS - 0000000000000038, RFLAGS - 0000000000010286 RAX - 000000007DC2FF00, RCX - 000000004FF99013, RDX - 000000007BF4CCF4 RBX - 000000007BE43FC0, RSP - 000000007FF25AE8, RBP - 000000007BE3C2A0 RSI - 000000000000000B, RDI - 000000007BE3C340 R8 - 000000007DC21168, R9 - 000000007DC1D4AE, R10 - 0000000000000067 R11 - 0000000000000002, R12 - 000000007BE3CCA0, R13 - 000000007BE3C260 R14 - 0000000000020004, R15 - 000000007DC1A613 DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030 GS - 0000000000000030, SS - 0000000000000030 CR0 - 0000000080010033, CR2 - 0000000000000000, CR3 - 000000007FC01000 CR4 - 0000000000000668, CR8 - 0000000000000000 DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000 DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400 GDTR - 000000007F9EE698 0000000000000047, LDTR - 0000000000000000 IDTR - 000000007F4B2018 0000000000000FFF, TR - 0000000000000000 FXSAVE_STATE - 000000007FF25740 !!!! Can't find image information. !!!! This was originally discovered on a Cavium ThunderX CRB system using subiquity from the groovy arm64 ISO. Failure there looks like: GNU GRUB version 2.04 ����������������������������������������������������������������������������Ŀ �*Ubuntu Server � � � � � � � � � � � � � � � � � � � � � � � � � ������������������������������������������������������������������������������ Use the and keys to select which entry is highlighted. Press enter to boot the selected OS, `e' to edit the commands before booting or `c' for a command-line. error: timeout reading `initrd'. Press any key to continue... [Fix] https://git.savannah.gnu.org/cgit/grub.git/commit/?id=a6838bbc6726ad624bd2b94991f690b8e9d23c69 [Where problems could occur] The fix is to the tftp command, so problems would like appear in the tftp stack, possibly due to inconsistencies between tftp server implementations. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1900773/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : [email protected] Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
