Arch Linux

alexmat

Member

Registered: 2004-12-31

Posts: 100

kernel 2.6.30 kvm segfaults

Using kvm-intel module, I keep getting segfaults with the new kernel when starting virtual machines. Is anyone else seeing this?

n37

Member

Registered: 2009-05-20

Posts: 9

Re: kernel 2.6.30 kvm segfaults

I'm getting segfaults with dosemu. It could be something common.

Rognon

Member

Registered: 2006-10-05

Posts: 40

Re: kernel 2.6.30 kvm segfaults

I'm having this problem too. Here's my stacktrace as reported by dmesg:

------------[ cut here ]------------
kernel BUG at arch/x86/kvm/../../../virt/kvm/kvm_main.c:2108!
invalid opcode: 0000 [#2] PREEMPT SMP
last sysfs file: /sys/module/kvm/initstate
CPU 2
Modules linked in: kvm_intel kvm fuse i915 drm i2c_algo_bit video output ipv6 joydev ext3 jbd usbhid hid snd_hda_codec_realtek usb_storage snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_hda_intel snd_hda_codec snd_mixer_oss snd_hwdep snd_pcm snd_timer snd ohci1394 i2c_i801 ppdev soundcore ieee1394 psmouse uhci_hcd parport_pc snd_page_alloc sg lp i2c_core serio_raw parport ehci_hcd iTCO_wdt iTCO_vendor_support usbcore intel_agp r8169 mii thermal processor evdev fan button battery ac vboxdrv rtc_cmos rtc_core rtc_lib ext4 mbcache jbd2 crc16 sr_mod cdrom sd_mod pata_acpi ata_generic ata_piix libata scsi_mod
Pid: 4256, comm: qemu Tainted: G      D    2.6.30-ARCH #1 Aspire M5630
RIP: 0010:[<ffffffffa064424d>]  [<ffffffffa064424d>] kvm_handle_fault_on_reboot+0x1d/0x30 [kvm]
RSP: 0018:ffff88004a63bc28  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88003dd41000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88003dd41000
RBP: ffff88004a458000 R08: 0000000000000000 R09: ffff88003dd41000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fb32fb4d6f0(0000) GS:ffff880001042000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004c3e60 CR3: 000000003dede000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process qemu (pid: 4256, threadinfo ffff88004a63a000, task ffff88007de68650)
Stack:
 0000000000010292 00000000428722fb 0000000000000018 ffffffffa067ae64
 000000003dd41000 00000000428722fb 0000000000001000 ffffffffa067ba8e
 ffff88004a63bdd8 00000000000000d4 000000000000d700 ffffffff802bf48c
Call Trace:
 [<ffffffffa067ae64>] ? vmcs_clear+0x24/0x70 [kvm_intel]
 [<ffffffffa067ba8e>] ? vmx_create_vcpu+0x11e/0xe0c [kvm_intel]
 [<ffffffff802bf48c>] ? __lock_page+0x6c/0x90
 [<ffffffff8026c730>] ? wake_bit_function+0x0/0x70
 [<ffffffffa0647de4>] ? kvm_vm_ioctl+0x394/0xa70 [kvm]
 [<ffffffff802d89d2>] ? __do_fault+0x442/0x540
 [<ffffffff8030d53d>] ? vfs_ioctl+0x2d/0xd0
 [<ffffffff8030d680>] ? do_vfs_ioctl+0xa0/0x580
 [<ffffffff80233cf1>] ? do_page_fault+0x131/0x3f0
 [<ffffffff8030dc00>] ? sys_ioctl+0xa0/0xc0
 [<ffffffff8020c442>] ? system_call_fastpath+0x16/0x1b
Code: 18 c3 e8 77 ac c0 df 0f 1f 80 00 00 00 00 48 83 ec 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 80 3d f5 ef 02 00 00 75 04 <0f> 0b eb fe eb fe 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48
RIP  [<ffffffffa064424d>] kvm_handle_fault_on_reboot+0x1d/0x30 [kvm]
 RSP <ffff88004a63bc28>
---[ end trace ea10481d890896c3 ]---

boris

Member

Registered: 2006-02-25

Posts: 20

Re: kernel 2.6.30 kvm segfaults

Try building kvm from source i think the latest stable is -87 to see if the problem persists upstream.

alexmat

Member

Registered: 2004-12-31

Posts: 100

Re: kernel 2.6.30 kvm segfaults

Built 87 from source, using Arch PKGBUILD, so it uses the existing kvm kernel module. Problem got worse. The segfault happens much sooner now. If I revert, the VM posts, but seqfaults when loading the OS.

Opened a bug: http://bugs.archlinux.org/task/15329