[Xen-users] Kernel BUG at drivers/xen/netfront/netfront.c:784

[Aaditya kumar <passion.for.systems@xxxxxxxxx>]

Hi ,
     While booting domainU I landed in following error or bug.
     Is this a BUG (surely looks like a bug to me ) or is there
something worng with my xen config file or something
     I have done wrongly.

    Should I file a bug ?


   Write protecting the kernel read-only data: 379k
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at drivers/xen/netfront/netfront.c:784
invalid opcode: 0000 [1] SMP
CPU 0
Modules linked in:
Pid: 270, comm: ifconfig Not tainted 2.6.18.8 #4
RIP: e030:[<ffffffff811820b6>]  [<ffffffff811820b6>]
network_alloc_rx_buffers+0x1d5/0x4e4
RSP: e02b:ffff88000faa9c68  EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88000fa68ec0 RCX: ffff880001a9a698
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000001200
RBP: ffff880001a98500 R08: 0000000000000000 R09: 000000000000dc82
R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000facd
R13: ffff880001a98620 R14: 0000000000000240 R15: ffff88000ff17838
FS:  0000000000000000(0000) GS:ffffffff8134a000(0063) knlGS:0000000000000000
CS:  e033 DS: 002b ES: 002b
Process ifconfig (pid: 270, threadinfo ffff88000faa8000, task ffff88000feba830)
Stack:  ffff880001a9a6d0 ffff880001a98000 0000000000000000 0000000100000000
 0000000000000001 ffffffff0feba830 ffff88000faa9d78 ffff88000faa9d88
 000000000000000c ffff88000fdf53c0 00000000ffc7b244 ffff880001a98000
Call Trace:
 [<ffffffff8118401e>] network_open+0x40/0xea
 [<ffffffff811c0cdc>] dev_open+0x2f/0x6e
 [<ffffffff811bf322>] dev_change_flags+0x5a/0x119
 [<ffffffff811f098a>] devinet_ioctl+0x235/0x59c
 [<ffffffff811b80fe>] sock_ioctl+0x1c1/0x1e5
 [<ffffffff81040bb5>] do_ioctl+0x21/0x6b
 [<ffffffff8102fd93>] vfs_ioctl+0x248/0x261
 [<ffffffff8104b4b8>] sys_ioctl+0x59/0x78
 [<ffffffff810cf90b>] dev_ifsioc+0xdd/0x202
 [<ffffffff810219fe>] fd_install+0x25/0x5f
 [<ffffffff810ce080>] compat_sys_ioctl+0x26c/0x2b0
 [<ffffffff8105cb8b>] ia32_sysret+0x0/0xa


Code: 0f 0b 68 65 3e 25 81 c2 10 03 4c 63 e2 48 8d bd 78 15 00 00
RIP  [<ffffffff811820b6>] network_alloc_rx_buffers+0x1d5/0x4e4
 RSP <ffff88000faa9c68>
 <0>Kernel panic - not syncing: Aiee, killing interrupt handler!


________________________________________________________

Kernel xen config option while buidling

CONFIG_XEN=y
CONFIG_XEN_INTERFACE_VERSION=0x00030207

#
# XEN
#
# CONFIG_XEN_PRIVILEGED_GUEST is not set
CONFIG_XEN_UNPRIVILEGED_GUEST=y
CONFIG_XEN_PRIVCMD=y
CONFIG_XEN_XENBUS_DEV=y
# CONFIG_XEN_BACKEND is not set
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
CONFIG_XEN_GRANT_DEV=y
CONFIG_XEN_FRAMEBUFFER=y
CONFIG_XEN_KEYBOARD=y
# CONFIG_XEN_SCRUB_PAGES is not set
# CONFIG_XEN_DISABLE_SERIAL is not set
CONFIG_XEN_SYSFS=y
CONFIG_XEN_COMPAT_030002_AND_LATER=y
# CONFIG_XEN_COMPAT_030004_AND_LATER is not set
# CONFIG_XEN_COMPAT_030100_AND_LATER is not set
# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
CONFIG_XEN_COMPAT=0x030002
CONFIG_HAVE_IRQ_IGNORE_UNHANDLED=y
CONFIG_NO_IDLE_HZ=y
CONFIG_XEN_SMPBOOT=y
CONFIG_XEN_BALLOON=y
CONFIG_XEN_DEVMEM=y


__________________________________________________-

xen dmain config file options

kernel = "/boot/vmlinuz-2.6.18-mycustom3"
memory = 256
name = "ux"
vif = [ '' ]
disk = [ 'file:/root/ttylinux-xen-libvirt/ttylinux-xen.img,sda1,w' ]
root = "/dev/sda1"
extra = "4"

________________________________________________________

[root@lustremds ttylinux-xen-libvirt]# virsh version
Compiled against library: libvir 0.6.3
Using library: libvir 0.6.3
Using API: Xen 3.0.1
Running hypervisor: Xen 3.1.0

[root@lustremds ttylinux-xen-libvirt]#










-- 
Regards ,
Aaditya.

I want to change the world ,But God won't give me the source code.

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