Re: KVM-88 Crash with Linux-2.6.25 kernel

[Gleb Natapov <gleb@redhat.com>]

On Thu, Jul 23, 2009 at 07:17:51PM +0530, Haneef Syed wrote:
> Hi Gleb,
> 
> After installing kvm-88 kernel package and issuing modprobe kvm-intel and 
> in dmesg it displays as follows
> 
> "loaded kvm module (kvm-kmod-devel-86)" 
> 
> it confirms that kvm-88 kernel modules are installed properly but still i 
> m unable to fix installation bug..?
> 
What is the bug? Host kernel oops like below?

> 
> 
> 
> 
> Gleb Natapov <gleb@redhat.com> 
> 07/23/2009 04:20 PM
> 
> To
> Haneef Syed <Haneef.Syed@lntinfotech.com>
> cc
> avi@redhat.com, kvm@vger.kernel.org, 
> virtualization@lists.linux-foundation.org
> Subject
> Re: KVM-88 Crash with Linux-2.6.25 kernel
> 
> 
> 
> 
> 
> 
> On Thu, Jul 23, 2009 at 03:13:25PM +0530, Haneef Syed wrote:
> > If i use kvm-88 kernel package then system does not crash
> > 
> > but it uses qemu emulation but not kvm. I want kvm emulation so
> > 
> If it uses qemu emulation then you haven't installed kvm-88 kernel modules
> properly.
> 
> > can u tell me how to achieve that.
> > 
> > 
> > 
> > 
> > Gleb Natapov <gleb@redhat.com> 
> > 07/23/2009 03:09 PM
> > 
> > To
> > Haneef Syed <Haneef.Syed@lntinfotech.com>
> > cc
> > kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, 
> > avi@redhat.com
> > Subject
> > Re: KVM-88 Crash with Linux-2.6.25 kernel
> > 
> > 
> > 
> > 
> > 
> > 
> > On Thu, Jul 23, 2009 at 03:06:07PM +0530, Haneef Syed wrote:
> > > Hi All,
> > > 
> > > I am using kvm-88 user space package with linux-2.6.25 kernel. I f i 
> run 
> > 
> > > following command system gets hang.
> > > 
> > Please use kvm-88 kernel package.
> > 
> > > ./qemu-system-x86_64 -hda new.qcow2 -cdrom 
> rhel-server-5.3-i386-dvd.iso 
> > > -boot d -m 512
> > > 
> > > When i print dmesg it displays as follows:
> > > 
> > > 
> > > BUG: unable to handle kernel NULL pointer dereference at virtual 
> address 
> > 
> > > 00000024
> > >  printing eip:
> > > c0425fb0
> > > *pde = 3963c067
> > > Oops: 0000 [#1]
> > > SMP
> > > Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 
> 
> > > xt_state nf_conntrack nfnetlink ipt_REJECT xt_tcpudp iptable_filter 
> > > ip_tables x_tables bridge rfcomm l2cap bluetooth autofs4 sunrpc 
> ib_iser 
> > > rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi 
> > > scsi_transport_iscsi cpufreq_ondemand acpi_cpufreq loop dm_multipath 
> > ipv6 
> > > kvm_intel kvm snd_hda_intel snd_hda_codec snd_seq_dummy snd_seq_oss 
> > > snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss 
> > > snd_pcm snd_timer snd soundcore via_rhine i2c_i801 parport_pc 
> > > snd_page_alloc mii parport i2c_core serio_raw pcspkr sg ata_generic 
> > > dm_snapshot dm_zero dm_mirror dm_mod ahci libata sd_mod scsi_mod ext3 
> > jbd 
> > > mbcache uhci_hcd ohci_hcd ehci_hcd
> > > CPU:    0
> > > EIP:    0060:[<c0425fb0>]    Not tainted VLI
> > > EFLAGS: 00010246   (2.6.21.kvm-25-21 #14)
> > > EIP is at do_exit+0x2ca/0x3c8
> > > eax: 00000000   ebx: f7c51dc0   ecx: 00000001   edx: f7bc80f0
> > > esi: f7bc80f0   edi: 00000000   ebp: 00000100   esp: f5372f84
> > > ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
> > > Process qemu-system-x86 (pid: 3668[#0], ti=f5372000 task=f7bc80f0 
> > > task.ti=f5372000)
> > > Stack: f7bc80f0 00000100 f5372000 c042cdf8 f7bb1580 f7a15ac0 00000100 
> > > f5372000
> > >        c0426144 00000001 00d55274 00d55274 c0404db0 00000001 b77956d0 
> > > 00000000
> > >        00d55274 00d55274 b7795738 000000fc ffff007b c040007b c0600000 
> > > 000000fc
> > > Call Trace:
> > >  [<c042cdf8>] signal_wake_up+0x1e/0x2c
> > >  [<c0426144>] sys_exit_group+0x0/0xd
> > >  [<c0404db0>] syscall_call+0x7/0xb
> > >  [<c0600000>] packet_setsockopt+0x13f/0x170
> > >  =======================
> > > Code: ab 04 00 e8 f7 d4 fd ff 85 ff 74 19 8b 86 6c 04 00 00 83 b8 b0 
> 00 
> > 00 
> > > 00 00 74 0a b8 01 00 00 00 e8 7e 64 10 00 8b 46 04 8b 40 04 <8b> 40 24 
> 
> > e8 
> > > 94 0d 02 00 8b 86 a4 00 00 00 85 c0 74 08 8b 40 04
> > > EIP: [<c0425fb0>] do_exit+0x2ca/0x3c8 SS:ESP 0068:f5372f84
> > > Fixing recursive fault but reboot is needed!
> > > 
> > > Please suggest me how to fix this bug..
> > > 
> > > Thanks in advance :-))
> > > 
> > > 
> > > ______________________________________________________________________
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> > 
> > --
> >                                                  Gleb.
> > 
> > ______________________________________________________________________
> > 
> > 
> > 
> > ______________________________________________________________________
> 
> --
>                                                  Gleb.
> 
> ______________________________________________________________________
> 
> 
> 
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--
			Gleb.