Public bug reported: Reported upstream as https://savannah.gnu.org/bugs/index.php?58283 .
= Configuration = grub> echo $package_version $grub_cpu $grub_platform 2.02-2ubuntu8.15 i386 pc == 1. Initial conditions == # rm /boot/grub/grubenv # grub-editenv - create # grub-editenv - set foo=bar # grub-editenv - list foo=bar # hexdump -C /boot/grub/grubenv 00000000 23 20 47 52 55 42 20 45 6e 76 69 72 6f 6e 6d 65 |# GRUB Environme| 00000010 6e 74 20 42 6c 6f 63 6b 0a 66 6f 6f 3d 62 61 72 |nt Block.foo=bar| 00000020 0a 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 |.###############| 00000030 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 |################| * 00000400 # reboot == 2. Drop to GRUB shell == grub> list_env foo=bar grub> baz=quux grub> save_env baz grub> list_env error: invalid environment block. grub> reboot == 3. Boot into Linux == $ grub-editenv - list grub-editenv: error: invalid environment block. $ hexdump -C /boot/grub/grubenv 00000000 00 23 20 47 52 55 42 20 45 6e 76 69 72 6f 6e 6d |.# GRUB Environm| 00000010 65 6e 74 20 42 6c 6f 63 6b 0a 66 6f 6f 3d 62 61 |ent Block.foo=ba| 00000020 72 0a 62 61 7a 3d 71 75 75 78 0a 23 23 23 23 23 |r.baz=quux.#####| 00000030 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 |################| * 00000400 $ ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: grub-common 2.02-2ubuntu8.15 ProcVersionSignature: Ubuntu 4.15.0-99.100-generic 4.15.18 Uname: Linux 4.15.0-99-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.14 Architecture: amd64 CurrentDesktop: XFCE Date: Fri May 1 10:35:28 2020 SourcePackage: grub2 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876319 Title: save_env prepends \0 to grubenv, causing "error: invalid environment block." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1876319/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs