I keep experiencing a crash when trying to run kvm with this kernel on the host. This doesn't happen with the current kernel in raring-updates Jul 24 10:32:41 farnsworth kernel: [ 91.512726] general protection fault: 0000 [#1] SMP Jul 24 10:32:41 farnsworth kernel: [ 91.512757] Modules linked in: vhost_net macvtap(F) macvlan(F) ip6table_filter(F) ip6_tables(F) ebtable_nat(F) ebtables(F) xt_state(F) ipt_REJECT(F) xt_CHECKSUM(F) iptable_mangle(F) xt_tcpudp(F) iptable_filter(F) ipt_MASQUERADE(F) iptable_nat(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) nf_nat_ipv4(F) nf_nat(F) nf_conntrack(F) ip_tables(F) x_tables(F) bridge(F) stp(F) llc(F) snd_hda_codec_hdmi snd_hda_codec_idt bnep rfcomm binfmt_misc(F) nls_iso8859_1(F) ch341 coretemp usbserial kvm_intel kvm ghash_clmulni_intel(F) cdc_mbim cdc_ncm uvcvideo btusb joydev(F) videobuf2_vmalloc aesni_intel(F) usbnet videobuf2_memops bluetooth aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) videobuf2_core snd_usb_audio arc4(F) videodev snd_usbmidi_lib iwldvm cdc_wdm mac80211 cdc_acm ppdev(F) dell_wmi sparse_keymap dell_laptop dcdbas dm_multipath(F) scsi_dh(F) microcode(F) iwlwifi snd_hda_intel snd_hda_codec snd_hwdep(F) snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) Jul 24 10:32:41 farnsworth kernel: snd_rawmidi(F) snd_seq(F) cfg80211 snd_seq_device(F) snd_timer(F) psmouse(F) serio_raw(F) snd(F) soundcore(F) mei lpc_ich parport_pc(F) i915 wmi video(F) drm_kms_helper drm i2c_algo_bit mac_hid lp(F) parport(F) hid_generic usbhid hid ahci(F) libahci(F) sdhci_pci sdhci e1000e(F) Jul 24 10:32:41 farnsworth kernel: [ 91.513393] CPU 3 Jul 24 10:32:41 farnsworth kernel: [ 91.513405] Pid: 43, comm: ksmd Tainted: GF 3.8.0-27-generic #40-Ubuntu Dell Inc. Latitude E6430/0CPWYR Jul 24 10:32:41 farnsworth kernel: [ 91.513449] RIP: 0010:[] [] kmem_cache_alloc+0x5a/0x130 Jul 24 10:32:41 farnsworth kernel: [ 91.513490] RSP: 0018:ffff8804046dfdc0 EFLAGS: 00010282 Jul 24 10:32:41 farnsworth kernel: [ 91.513514] RAX: 0000000000000000 RBX: ffff880200000001 RCX: 000000000003d148 Jul 24 10:32:41 farnsworth kernel: [ 91.513544] RDX: 000000000003d147 RSI: 00000000000080d0 RDI: ffff88040d801700 Jul 24 10:32:41 farnsworth kernel: [ 91.513574] RBP: ffff8804046dfdf0 R08: 0000000000016d20 R09: ffff880353745ffc Jul 24 10:32:41 farnsworth kernel: [ 91.513604] R10: ffff880353745000 R11: 0000000000000000 R12: 00000000000080d0 Jul 24 10:32:41 farnsworth kernel: [ 91.513633] R13: ffff88040d801700 R14: ffffffff81178987 R15: b300007f8cc34d34 Jul 24 10:32:41 farnsworth kernel: [ 91.513663] FS: 0000000000000000(0000) GS:ffff88041e380000(0000) knlGS:0000000000000000 Jul 24 10:32:41 farnsworth kernel: [ 91.513697] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 24 10:32:41 farnsworth kernel: [ 91.513722] CR2: 0000000000fc00f8 CR3: 0000000001c0d000 CR4: 00000000001427e0 Jul 24 10:32:41 farnsworth kernel: [ 91.513753] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 24 10:32:41 farnsworth kernel: [ 91.513783] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jul 24 10:32:41 farnsworth kernel: [ 91.513814] Process ksmd (pid: 43, threadinfo ffff8804046de000, task ffff8804046f1740) Jul 24 10:32:41 farnsworth kernel: [ 91.513846] Stack: Jul 24 10:32:41 farnsworth kernel: [ 91.513857] 0000000000000000 ffff880200000001 ffff880407a6c6c0 ffff8803acb4ae00 Jul 24 10:32:41 farnsworth kernel: [ 91.513873] 00007f9ca8946000 ffffea000d4dd180 ffff8804046dfe60 ffffffff81178987 Jul 24 10:32:41 farnsworth kernel: [ 91.513875] ffffffffffffffff ffff8804046f1740 ffff8804046dffd8 ffff8804046dffd8 Jul 24 10:32:41 farnsworth kernel: [ 91.513877] Call Trace: Jul 24 10:32:41 farnsworth kernel: [ 91.513878] [] ksm_do_scan+0x347/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.513881] [] ksm_scan_thread+0x76/0x280 Jul 24 10:32:41 farnsworth kernel: [ 91.513883] [] ? finish_wait+0x80/0x80 Jul 24 10:32:41 farnsworth kernel: [ 91.513885] [] ? ksm_do_scan+0x9f0/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.513887] [] kthread+0xc0/0xd0 Jul 24 10:32:41 farnsworth kernel: [ 91.513889] [] ? kthread_create_on_node+0x120/0x120 Jul 24 10:32:41 farnsworth kernel: [ 91.513890] [] ret_from_fork+0x7c/0xb0 Jul 24 10:32:41 farnsworth kernel: [ 91.513893] [] ? kthread_create_on_node+0x120/0x120 Jul 24 10:32:41 farnsworth kernel: [ 91.513894] Code: 54 00 4d 8b 45 00 65 4c 03 04 25 08 dc 00 00 49 8b 50 08 4d 8b 38 4d 85 ff 0f 84 96 00 00 00 49 63 45 20 48 8d 4a 01 4d 8b 45 00 <49> 8b 1c 07 4c 89 f8 65 49 0f c7 08 0f 94 c0 84 c0 74 c4 49 63 Jul 24 10:32:41 farnsworth kernel: [ 91.513915] RIP [] kmem_cache_alloc+0x5a/0x130 Jul 24 10:32:41 farnsworth kernel: [ 91.513917] RSP Jul 24 10:32:41 farnsworth kernel: [ 91.513928] general protection fault: 0000 [#2] SMP Jul 24 10:32:41 farnsworth kernel: [ 91.513948] Modules linked in: vhost_net macvtap(F) macvlan(F) ip6table_filter(F) ip6_tables(F) ebtable_nat(F) ebtables(F) xt_state(F) ipt_REJECT(F) xt_CHECKSUM(F) iptable_mangle(F) xt_tcpudp(F) iptable_filter(F) ipt_MASQUERADE(F) iptable_nat(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) nf_nat_ipv4(F) nf_nat(F) nf_conntrack(F) ip_tables(F) x_tables(F) bridge(F) stp(F) llc(F) snd_hda_codec_hdmi snd_hda_codec_idt bnep rfcomm binfmt_misc(F) nls_iso8859_1(F) ch341 coretemp usbserial kvm_intel kvm ghash_clmulni_intel(F) cdc_mbim cdc_ncm uvcvideo btusb joydev(F) videobuf2_vmalloc aesni_intel(F) usbnet videobuf2_memops bluetooth aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) videobuf2_core snd_usb_audio arc4(F) videodev snd_usbmidi_lib iwldvm cdc_wdm mac80211 cdc_acm ppdev(F) dell_wmi sparse_keymap dell_laptop dcdbas dm_multipath(F) scsi_dh(F) microcode(F) iwlwifi snd_hda_intel snd_hda_codec snd_hwdep(F) snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) Jul 24 10:32:41 farnsworth kernel: snd_rawmidi(F) snd_seq(F) cfg80211 snd_seq_device(F) snd_timer(F) psmouse(F) serio_raw(F) snd(F) soundcore(F) mei lpc_ich parport_pc(F) i915 wmi video(F) drm_kms_helper drm i2c_algo_bit mac_hid lp(F) parport(F) hid_generic usbhid hid ahci(F) libahci(F) sdhci_pci sdhci e1000e(F) Jul 24 10:32:41 farnsworth kernel: [ 91.513962] CPU 3 Jul 24 10:32:41 farnsworth kernel: [ 91.513962] Pid: 43, comm: ksmd Tainted: GF 3.8.0-27-generic #40-Ubuntu Dell Inc. Latitude E6430/0CPWYR Jul 24 10:32:41 farnsworth kernel: [ 91.513964] RIP: 0010:[] [] __kmalloc+0x80/0x170 Jul 24 10:32:41 farnsworth kernel: [ 91.513966] RSP: 0018:ffff8804046df8f0 EFLAGS: 00010082 Jul 24 10:32:41 farnsworth kernel: [ 91.513966] RAX: 0000000000000000 RBX: 1fffffffffffffff RCX: 000000000003d148 Jul 24 10:32:41 farnsworth kernel: [ 91.513967] RDX: 000000000003d147 RSI: 0000000000000000 RDI: ffffffffa014ec66 Jul 24 10:32:41 farnsworth kernel: [ 91.513968] RBP: ffff8804046df928 R08: 0000000000016d20 R09: ffff8803c6426ea0 Jul 24 10:32:41 farnsworth kernel: [ 91.513968] R10: 0000000000000384 R11: 000000000000041a R12: b300007f8cc34d34 Jul 24 10:32:41 farnsworth kernel: [ 91.513969] R13: 00000000000080d0 R14: 0000000000000040 R15: ffff88040d801700 Jul 24 10:32:41 farnsworth kernel: [ 91.513970] FS: 0000000000000000(0000) GS:ffff88041e380000(0000) knlGS:0000000000000000 Jul 24 10:32:41 farnsworth kernel: [ 91.513970] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 24 10:32:41 farnsworth kernel: [ 91.513971] CR2: 0000000000fc00f8 CR3: 0000000001c0d000 CR4: 00000000001427e0 Jul 24 10:32:41 farnsworth kernel: [ 91.513972] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 24 10:32:41 farnsworth kernel: [ 91.513973] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jul 24 10:32:41 farnsworth kernel: [ 91.513974] Process ksmd (pid: 43, threadinfo ffff8804046de000, task ffff8804046f1740) Jul 24 10:32:41 farnsworth kernel: [ 91.513974] Stack: Jul 24 10:32:41 farnsworth kernel: [ 91.513976] ffffffffa014ec66 0000000000000018 1fffffffffffffff ffff880406cf50c0 Jul 24 10:32:41 farnsworth kernel: [ 91.513977] ffff880403665388 ffff8803c6426ea0 ffff8803c6426ea8 ffff8804046df9c8 Jul 24 10:32:41 farnsworth kernel: [ 91.513979] ffffffffa014ec66 0000000000000001 0000000000000000 0000000000000000 Jul 24 10:32:41 farnsworth kernel: [ 91.513979] Call Trace: Jul 24 10:32:41 farnsworth kernel: [ 91.513993] [] ? intel_crtc_set_config+0x126/0x950 [i915] Jul 24 10:32:41 farnsworth kernel: [ 91.514004] [] intel_crtc_set_config+0x126/0x950 [i915] Jul 24 10:32:41 farnsworth kernel: [ 91.514006] [] ? string.isra.4+0x3a/0xd0 Jul 24 10:32:41 farnsworth kernel: [ 91.514011] [] drm_fb_helper_pan_display+0x95/0xe0 [drm_kms_helper] Jul 24 10:32:41 farnsworth kernel: [ 91.514014] [] fb_pan_display+0xc1/0x180 Jul 24 10:32:41 farnsworth kernel: [ 91.514017] [] bit_update_start+0x29/0x60 Jul 24 10:32:41 farnsworth kernel: [ 91.514018] [] fbcon_switch+0x3ac/0x570 Jul 24 10:32:41 farnsworth kernel: [ 91.514021] [] redraw_screen+0x179/0x240 Jul 24 10:32:41 farnsworth kernel: [ 91.514023] [] fbcon_blank+0x21a/0x2e0 Jul 24 10:32:41 farnsworth kernel: [ 91.514026] [] ? down_trylock+0x36/0x50 Jul 24 10:32:41 farnsworth kernel: [ 91.514028] [] ? console_trylock+0x18/0x60 Jul 24 10:32:41 farnsworth kernel: [ 91.514031] [] ? default_spin_lock_flags+0x9/0x10 Jul 24 10:32:41 farnsworth kernel: [ 91.514033] [] ? _raw_spin_lock_irqsave+0x2e/0x40 Jul 24 10:32:41 farnsworth kernel: [ 91.514035] [] ? lock_timer_base.isra.36+0x38/0x70 Jul 24 10:32:41 farnsworth kernel: [ 91.514037] [] ? mod_timer+0x13a/0x210 Jul 24 10:32:41 farnsworth kernel: [ 91.514039] [] do_unblank_screen+0xb4/0x1e0 Jul 24 10:32:41 farnsworth kernel: [ 91.514040] [] unblank_screen+0x10/0x20 Jul 24 10:32:41 farnsworth kernel: [ 91.514042] [] bust_spinlocks+0x19/0x40 Jul 24 10:32:41 farnsworth kernel: [ 91.514044] [] oops_end+0x3f/0xf0 Jul 24 10:32:41 farnsworth kernel: [ 91.514048] [] die+0x58/0x90 Jul 24 10:32:41 farnsworth kernel: [ 91.514050] [] ? ksm_do_scan+0x347/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.514051] [] do_general_protection+0xda/0x160 Jul 24 10:32:41 farnsworth kernel: [ 91.514053] [] general_protection+0x28/0x30 Jul 24 10:32:41 farnsworth kernel: [ 91.514055] [] ? ksm_do_scan+0x347/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.514057] [] ? kmem_cache_alloc+0x5a/0x130 Jul 24 10:32:41 farnsworth kernel: [ 91.514058] [] ksm_do_scan+0x347/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.514060] [] ksm_scan_thread+0x76/0x280 Jul 24 10:32:41 farnsworth kernel: [ 91.514062] [] ? finish_wait+0x80/0x80 Jul 24 10:32:41 farnsworth kernel: [ 91.514063] [] ? ksm_do_scan+0x9f0/0x9f0 Jul 24 10:32:41 farnsworth kernel: [ 91.514064] [] kthread+0xc0/0xd0 Jul 24 10:32:41 farnsworth kernel: [ 91.514066] [] ? kthread_create_on_node+0x120/0x120 Jul 24 10:32:41 farnsworth kernel: [ 91.514067] [] ret_from_fork+0x7c/0xb0 Jul 24 10:32:41 farnsworth kernel: [ 91.514069] [] ? kthread_create_on_node+0x120/0x120 Jul 24 10:32:41 farnsworth kernel: [ 91.514085] Code: 48 8b 7d c8 4d 8b 07 65 4c 03 04 25 08 dc 00 00 49 8b 50 08 4d 8b 20 4d 85 e4 0f 84 90 00 00 00 49 63 47 20 48 8d 4a 01 4d 8b 07 <49> 8b 1c 04 4c 89 e0 65 49 0f c7 08 0f 94 c0 84 c0 74 c6 49 63 Jul 24 10:32:41 farnsworth kernel: [ 91.514087] RIP [] __kmalloc+0x80/0x170 Jul 24 10:32:41 farnsworth kernel: [ 91.514087] RSP Jul 24 10:32:41 farnsworth kernel: [ 91.514088] ---[ end trace d0642166c58d5205 ]---