[Xen-bugs] [Bug 497] New: zap_low_mappings kernel panic

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=497

           Summary: zap_low_mappings kernel panic
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: Guest-OS
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: p.bugzilla.xensource.com@xxxxxxxxxxxxxxx


# xm create -c /home/users/foo/params
Using config file "/home/users/foo/params".
Started domain sunriseresorts.com
Linux version 2.6.12.6-xenU-rimu3 (root@xxxxxxxxxxxxxxxxxxx) (gcc version 3.4.4
20050721 (Red Hat 3.4.4-2)) #2 Sat Jan 28 00:03:13 UTC 2006
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000008000000 (usable)
0MB HIGHMEM available.
136MB LOWMEM available.
NX (Execute Disable) protection: active
IRQ lockup detection disabled
Built 1 zonelists
Kernel command line:  root=/dev/xvda1 ro
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 16384 bytes)
Xen reported: 1994.314 MHz processor.
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
vmalloc area: c9000000-f53fe000, maxmem 2d800000
Memory: 125432k/139264k available (2402k kernel code, 5332k reserved, 579k data,
152k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
------------[ cut here ]------------
kernel BUG at arch/xen/i386/mm/hypervisor.c:77!
invalid operand: 0000 [#1]
CPU:    0
EIP:    0061:[<c01132ec>]    Not tainted VLI
EFLAGS: 00010282   (2.6.12.6-xenU-rimu3)
EIP is at xen_l3_entry_update+0x7b/0x85
eax: ffffffea   ebx: c03ebf70   ecx: 00000001   edx: 00000000
esi: 00007ff0   edi: 00000002   ebp: 00000000   esp: c03ebf70
ds: 007b   es: 007b   ss: 0069
Process swapper (pid: 0, threadinfo=c03ea000 task=c038ce80)
Stack: 33542000 00000002 00000000 00000000 00000098 00000002 00000008 c0110bd0
       c04a0000 00000000 00000000 00000098 00000243 00000962 00000535 c03f65f7
       c0366afc 0001e9f8 00022000 00000962 000014d4 00000243 00000098 00000000
Call Trace:
 [<c0110bd0>] zap_low_mappings+0x50/0x61
 [<c03f65f7>] mem_init+0x242/0x291
 [<c03ec6a2>] start_kernel+0x115/0x1d5
 [<c03ec2d4>] unknown_bootoption+0x0/0x1bc
Code: 89 54 24 0c 89 34 24 89 7c 24 04 89 44 24 08 b9 01 00 00 00 31 d2 be f0 7f
00 00 e8 3f 0d ff ff 85 c0 78 07 83 c4 10 5b 5e 5f c3 <0f> 0b 4d 00 79 69 36 c0
eb ef 56 31 d2 b9 01 00 00 00 53 be f0
 <0>Kernel panic - not syncing: Attempted to kill the idle task!
 [root@host73 users]# cat sunriseresorts.com/params
kernel = "/home/users/sunriseresorts.com/linux"
memory = 128
swap = 96
name = "foo"
ipaddr = "65.99.199.140"
vif = [ 'bridge=xen-br0' ]
disk = [ 'file:/home/users/sunriseresorts.com/rhel4-3.ext3,xvda1,w',
'file:/home/users/sunriseresorts.com/swapfs.swp,xvda9,w' ]
root = "/dev/xvda1 ro"
restart = 'onreboot'
console = 50012

# xm info
system                 : Linux
release                : 2.6.12.6-xen0
version                : #2 Fri Jan 27 23:58:57 UTC 2006
machine                : i686
nr_cpus                : 2
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 1994
hw_caps                : 078bfbff:e1d3fbff:00000000:00000010
total_memory           : 8192
free_memory            : 6773
xen_major              : 3
xen_minor              : 0
xen_extra              : .0
xen_caps               : xen-3.0-x86_32p
platform_params        : virt_start=0xf5800000
xen_changeset          : Thu Jan 26 10:31:28 2006 +0100 8671:5fcc346d6fe0
cc_compiler            : gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)
cc_compile_by          : root
cc_compile_date        : Sat Jan 28 00:11:13 UTC 2006

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