Re: KVM-88 Crash with Linux-2.6.25 kernel

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..?





Gleb Natapov [off-list ref] 
07/23/2009 04:20 PM

To
Haneef Syed [off-list ref]
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 [off-list ref] 
07/23/2009 03:09 PM

To
Haneef Syed [off-list ref]
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:

quoted

Hi All,

I am using kvm-88 user space package with linux-2.6.25 kernel. I f i 

run 

quoted

following command system gets hang.

Please use kvm-88 kernel package.

quoted

./qemu-system-x86_64 -hda new.qcow2 -cdrom 

rhel-server-5.3-i386-dvd.iso 

quoted

-boot d -m 512

When i print dmesg it displays as follows:


BUG: unable to handle kernel NULL pointer dereference at virtual 

address 

quoted

00000024
 printing eip:
c0425fb0
*pde = 3963c067
Oops: 0000 [#1]
SMP
Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 

quoted

xt_state nf_conntrack nfnetlink ipt_REJECT xt_tcpudp iptable_filter 
ip_tables x_tables bridge rfcomm l2cap bluetooth autofs4 sunrpc 

ib_iser 

quoted

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 

quoted

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 

quoted

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 

quoted

00 00 74 0a b8 01 00 00 00 e8 7e 64 10 00 8b 46 04 8b 40 04 <8b> 40 24 

e8 

quoted

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.

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                                                 Gleb.

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