Just some additional data without any final conclusion. Talking to Sean, the affected instance type seem to be all Xen based. The provided stacktrace backs this. In the past that could have been a mix of paravirtualized (PV) and hardware virtualized (HVM). But since spectre/meltdown I expect that to be all HVM guests.
>From the stacktrace the bug occurs early during setup of ACPI. At least that part has not changed on the 4.4 kernel side. There is one change in this cycle which changes where internal driver data gets attached to interrupt controller structures. Though that would be a change which was applied to all (4.4, 4.15, 5.4) kernels in this cycle. -- 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/1896725 Title: xenial 4.4.0-191-generic in -proposed has a regression Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Bug description: [Impact] The new xenial kernel in -proposed, 4.4.0-191-generic, and its derivatives, such as 4.4.0-1115-aws suffer a kernel panic on boot on AWS. I tested t2.micro and t2.medium, it happens every time. Simply install the kernel from -proposed and reboot, we get the following oops: [ 0.549557] BUG: unable to handle kernel paging request at ffffffffff5f3000 [ 0.552000] IP: [<ffffffff810592ff>] mp_irqdomain_activate+0x5f/0xa0 [ 0.552000] PGD 1e0f067 PUD 1e11067 PMD 1e12067 PTE 0 [ 0.552000] Oops: 0002 [#1] SMP [ 0.552000] Modules linked in: [ 0.552000] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.4.0-191-generic #221-Ubuntu [ 0.552000] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006 [ 0.552000] task: ffff88010a0f0000 ti: ffff88010a0f8000 task.ti: ffff88010a0f8000 [ 0.552000] RIP: 0010:[<ffffffff810592ff>] [<ffffffff810592ff>] mp_irqdomain_activate+0x5f/0xa0 [ 0.552000] RSP: 0000:ffff88010a0fbc48 EFLAGS: 00010086 [ 0.552000] RAX: 0000000000000086 RBX: ffff88010a1df480 RCX: 0000000000000000 [ 0.552000] RDX: ffffffffff5f3000 RSI: 0000000000000001 RDI: 000000000020c000 [ 0.552000] RBP: ffff88010a0fbc50 R08: ffffffff81ebdfd0 R09: 00000000ffffffff [ 0.552000] R10: 0000000000000011 R11: 0000000000000009 R12: ffff88010ad95400 [ 0.552000] R13: 0000000000000001 R14: 0000000000000009 R15: ffff88010a1fc480 [ 0.552000] FS: 0000000000000000(0000) GS:ffff88010b240000(0000) knlGS:0000000000000000 [ 0.552000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.552000] CR2: ffffffffff5f3000 CR3: 0000000001e0a000 CR4: 0000000000160670 [ 0.552000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.552000] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 0.552000] Stack: [ 0.552000] ffff88010ac0ba58 ffff88010a0fbc70 ffffffff810ea644 ffff88010ac0ba00 [ 0.552000] ffff88010ac0ba58 ffff88010a0fbca0 ffffffff810e6d88 ffffffff810e1009 [ 0.552000] ffff88010ac0ba00 ffff88010ac0baa0 ffff88010a1fc480 ffff88010a0fbd38 [ 0.552000] Call Trace: [ 0.552000] [<ffffffff810ea644>] irq_domain_activate_irq+0x44/0x50 [ 0.552000] [<ffffffff810e6d88>] irq_startup+0x38/0x90 [ 0.552000] [<ffffffff810e1009>] ? vprintk_default+0x29/0x40 [ 0.552000] [<ffffffff810e55e2>] __setup_irq+0x5a2/0x650 [ 0.552000] [<ffffffff811fc064>] ? kmem_cache_alloc_trace+0x1d4/0x1f0 [ 0.552000] [<ffffffff814a3870>] ? acpi_osi_handler+0xb0/0xb0 [ 0.552000] [<ffffffff810e582b>] request_threaded_irq+0xfb/0x1a0 [ 0.552000] [<ffffffff814a3870>] ? acpi_osi_handler+0xb0/0xb0 [ 0.552000] [<ffffffff814bf624>] ? acpi_ev_sci_dispatch+0x64/0x64 [ 0.552000] [<ffffffff814a3f0a>] acpi_os_install_interrupt_handler+0xaa/0x100 [ 0.552000] [<ffffffff81fb26e1>] ? acpi_sleep_proc_init+0x28/0x28 [ 0.552000] [<ffffffff814bf689>] acpi_ev_install_sci_handler+0x23/0x25 [ 0.552000] [<ffffffff814bcf03>] acpi_ev_install_xrupt_handlers+0x1c/0x6c [ 0.552000] [<ffffffff81fb3e9d>] acpi_enable_subsystem+0x8f/0x93 [ 0.552000] [<ffffffff81fb276c>] acpi_init+0x8b/0x2c4 [ 0.552000] [<ffffffff8141ee1e>] ? kasprintf+0x4e/0x70 [ 0.552000] [<ffffffff81fb26e1>] ? acpi_sleep_proc_init+0x28/0x28 [ 0.552000] [<ffffffff810021f5>] do_one_initcall+0xb5/0x200 [ 0.552000] [<ffffffff810a6fda>] ? parse_args+0x29a/0x4a0 [ 0.552000] [<ffffffff81f69152>] kernel_init_freeable+0x177/0x218 [ 0.552000] [<ffffffff8185dcf0>] ? rest_init+0x80/0x80 [ 0.552000] [<ffffffff8185dcfe>] kernel_init+0xe/0xe0 [ 0.552000] [<ffffffff8186aea5>] ret_from_fork+0x55/0x80 [ 0.552000] [<ffffffff8185dcf0>] ? rest_init+0x80/0x80 [ 0.552000] Code: 8d 1c d2 8d ba 0b 02 00 00 44 8d 51 11 42 8b 14 dd 74 ec 10 82 c1 e7 0c 48 63 ff 81 e2 ff 0f 00 00 48 81 ea 00 10 80 00 48 29 fa <44> 89 12 89 72 10 42 8b 14 dd 74 ec 10 82 83 c1 10 81 e2 ff 0f [ 0.552000] RIP [<ffffffff810592ff>] mp_irqdomain_activate+0x5f/0xa0 [ 0.996006] RSP <ffff88010a0fbc48> [ 0.996006] CR2: ffffffffff5f3000 [ 0.996006] ---[ end trace 1d0c3bd610d641a0 ]--- [ 1.012018] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1896725/+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
