** Description changed: The latest Focal kernel (linux-image-5.4.0-92-generic) fails to boot when SEV is enabled. The kernel panics with the following backtrace : [ 1.531125] ledtrig-cpu: registered to indicate activity on CPUs [ 1.531760] EFI Variables Facility v0.08 2004-May-17 [ 1.532575] general protection fault: 0000 [#1] SMP NOPTI [ 1.533116] CPU: 11 PID: 1 Comm: swapper/0 Not tainted 5.4.157-debug6 #15 [ 1.533788] Hardware name: Scaleway SCW-ENT1-L, BIOS 0.0.0 02/06/2015 [ 1.534429] RIP: 0010:efi_mokvar_sysfs_init+0x9d/0x184 [ 1.534949] Code: 00 48 85 c0 0f 85 b3 00 00 00 48 c7 c7 b0 db e2 a1 41 bd f4 ff ff ff e8 98 90 16 ff e9 e6 00 00 00 48 85 d2 0f 85 a5 00 00 00 <80> 3b 00 0f 84 b5 00 00 00 48 85 db 0f 84 ac 00 00 00 48 8b 3d 85 [ 1.535120] RSP: 0018:ffffb96e4001bdf8 EFLAGS: 00010202 [ 1.535120] RAX: b6262a23e510e179 RBX: b625e392251db281 RCX: 0000000000000000 [ 1.535120] RDX: ffffb96e400cd000 RSI: ffff978437e5dc38 RDI: ffffffffa2121860 [ 1.535120] RBP: ffffb96e4001be10 R08: 0000000000000000 R09: 0000000000000228 [ 1.538947] R10: 0000000000000001 R11: 0000000000000000 R12: ffff978437e555a0 [ 1.538947] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1.538947] FS: 0000000000000000(0000) GS:ffff97843f6c0000(0000) knlGS:0000000000000000 [ 1.538947] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.538947] CR2: 00000000ffffffff CR3: 00080011a060a001 CR4: 0000000000360ee0 [ 1.538947] Call Trace: [ 1.538947] ? efi_rci2_sysfs_init+0x29a/0x29a [ 1.538947] do_one_initcall+0x4a/0x200 [ 1.538947] kernel_init_freeable+0x1c0/0x263 [ 1.538947] ? rest_init+0xb0/0xb0 [ 1.538947] kernel_init+0xe/0x110 [ 1.538947] ret_from_fork+0x22/0x40 [ 1.538947] Modules linked in: [ 1.545871] ---[ end trace 815dc8177e65da02 ]--- [ 1.546328] RIP: 0010:efi_mokvar_sysfs_init+0x9d/0x184 [ 1.546872] Code: 00 48 85 c0 0f 85 b3 00 00 00 48 c7 c7 b0 db e2 a1 41 bd f4 ff ff ff e8 98 90 16 ff e9 e6 00 00 00 48 85 d2 0f 85 a5 00 00 00 <80> 3b 00 0f 84 b5 00 00 00 48 85 db 0f 84 ac 00 00 00 48 8b 3d 85 [ 1.548703] RSP: 0018:ffffb96e4001bdf8 EFLAGS: 00010202 [ 1.549218] RAX: b6262a23e510e179 RBX: b625e392251db281 RCX: 0000000000000000 [ 1.549916] RDX: ffffb96e400cd000 RSI: ffff978437e5dc38 RDI: ffffffffa2121860 [ 1.550617] RBP: ffffb96e4001be10 R08: 0000000000000000 R09: 0000000000000228 [ 1.551337] R10: 0000000000000001 R11: 0000000000000000 R12: ffff978437e555a0 [ 1.552036] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1.552737] FS: 0000000000000000(0000) GS:ffff97843f6c0000(0000) knlGS:0000000000000000 [ 1.553529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.554093] CR2: 00000000ffffffff CR3: 00080011a060a001 CR4: 0000000000360ee0 [ 1.554818] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 1.555335] Kernel Offset: 0x1fa00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1.555335] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- - - - The previous kernel (linux-image-5.4.0-91-generic) boots correctly with SEV. + The previous kernel (linux-image-5.4.0-91-generic) boots correctly with + SEV. Bisection of the kernels b/w 5.4.0-91 and 5.4.0-92 identified the following commit as the source of regresssion : # git bisect good - Bisecting: 0 revisions left to test after this (roughly 1 step) - [5f79bc17fd8d078378a9f3c8773ebcb506cb6f40] Revert "UBUNTU: SAUCE: (lockdown) Make get_cert_list() not complain about cert lists that aren't present." + 7ca05228f713c24eb55574b36e32d9b54c5a1b76 is the first bad commit + commit 7ca05228f713c24eb55574b36e32d9b54c5a1b76 + Author: Lenny Szubowicz <lszub...@redhat.com> + Date: Fri Sep 4 21:31:05 2020 -0400 + + efi: Support for MOK variable config table + + BugLink: https://bugs.launchpad.net/bugs/1928679 + + ... Since the panic happens in very early stages of boot, no trace of the panic is present in the log files and apparently it is not possible to collect a kernel crash dump, the crashkernel has not been enabled yet.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956575 Title: [Regression] Focal kernel 5.4.0-92.103 fails to boot when Secure Encrypted Virtualization(SEV) is enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
