BTW this is the stacktrace I get from a Xenial guest on Xenial host: [ 0.000000] BUG: unable to handle kernel paging request at ffffc90000000004 [ 0.000000] IP: [<ffffffff81f7dc60>] hpet_enable.part.13+0x23/0x2a5 [ 0.000000] PGD 171629ab067 PUD 171629ac067 PMD 171629ad067 PTE 80000000fed00073 [ 0.000000] Oops: 0009 [#1] SMP [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.0-122-generic #146-Ubuntu [ 0.000000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 0.000000] task: ffffffff81e13500 ti: ffffffff81e00000 task.ti: ffffffff81e00000 [ 0.000000] RIP: 0010:[<ffffffff81f7dc60>] [<ffffffff81f7dc60>] hpet_enable.part.13+0x23/0x2a5 [ 0.000000] RSP: 0000:ffffffff81e03ef0 EFLAGS: 00010282 [ 0.000000] RAX: ffffc90000000000 RBX: ffffffffffffffff RCX: 0000000000000000 [ 0.000000] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 0.000000] RBP: ffffffff81e03f10 R08: 000000000001ad50 R09: 00000000000001f0 [ 0.000000] R10: ffff89773fa20000 R11: 0000000000000001 R12: ffff89773f99f6c0 [ 0.000000] R13: ffffffff8200e920 R14: ffffffff8201c2e0 R15: ffffffff81e03fa8 [ 0.000000] FS: 0000000000000000(0000) GS:ffff897162c00000(0000) knlGS:0000000000000000 [ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 0.000000] CR2: ffffc90000000004 CR3: 0000000001e0a000 CR4: 0000000000000630 [ 0.000000] Stack: [ 0.000000] ffffffffffffffff ffff89773f99f6c0 ffffffff8200e920 ffffffff8201c2e0 [ 0.000000] ffffffff81e03f20 ffffffff81f7df00 ffffffff81e03f30 ffffffff81f6ee7a [ 0.000000] ffffffff81e03f40 ffffffff81f6ee4a ffffffff81e03f80 ffffffff81f63f71 [ 0.000000] Call Trace: [ 0.000000] [<ffffffff81f7df00>] hpet_enable+0x1e/0x20 [ 0.000000] [<ffffffff81f6ee7a>] hpet_time_init+0x9/0x19 [ 0.000000] [<ffffffff81f6ee4a>] x86_late_time_init+0x10/0x17 [ 0.000000] [<ffffffff81f63f71>] start_kernel+0x3d8/0x4aa [ 0.000000] [<ffffffff81f63120>] ? early_idt_handler_array+0x120/0x120 [ 0.000000] [<ffffffff81f63339>] x86_64_start_reservations+0x2a/0x2c [ 0.000000] [<ffffffff81f63485>] x86_64_start_kernel+0x14a/0x16d [ 0.000000] Code: 01 00 00 00 41 5c 5d c3 55 48 8b 3d 63 f4 18 00 be 00 04 00 00 48 89 e5 41 56 41 55 41 54 53 e8 f7 f2 0e ff 48 89 05 d8 f4 18 00 <8b> 48 04 b8 e9 03 00 00 48 8b 15 c9 f4 18 00 8b 52 10 ff c2 75 [ 0.000000] RIP [<ffffffff81f7dc60>] hpet_enable.part.13+0x23/0x2a5 [ 0.000000] RSP <ffffffff81e03ef0> [ 0.000000] CR2: ffffc90000000004 [ 0.000000] ---[ end trace 404be15fe05aa681 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task!
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1769053 Title: Cannot start a guest with more than 1TB of RAM Status in QEMU: Incomplete Status in qemu package in Ubuntu: Incomplete Bug description: Attempting to start a KVM guest with more than 1TB of RAM fails. It looks like we might need some extra patches: https://lists.gnu.org/archive/html/qemu-discuss/2017-12/msg00005.html ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: qemu-system-x86 1:2.11+dfsg-1ubuntu7 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: Unity:Unity7:ubuntu Date: Fri May 4 16:21:14 2018 InstallationDate: Installed on 2017-04-05 (393 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: Dell Inc. XPS 13 9360 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash transparent_hugepage=madvise vt.handoff=1 SourcePackage: qemu UpgradeStatus: Upgraded to bionic on 2018-04-30 (3 days ago) dmi.bios.date: 02/26/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.6.2 dmi.board.name: 0PF86Y dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.6.2:bd02/26/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0PF86Y:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9360 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1769053/+subscriptions
