[Xen-bugs] [Bug 337] New: domu oops

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=337

           Summary: domu oops
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: tedkaz@xxxxxxxxxxxxx


Dom0 - Tyan 2462 SMP - FC4
domu - gentoo 2005, jailtime.org

Using logical volumes for everything but /boot.

changeset:   7396:9b51e7637676

Intermittent, had to issue xm create  10 times to get domU to come up, and only
saw this 2 out of the 10 times.

Unable to handle kernel NULL pointer dereference at virtual address 00000104
 printing eip:
c0253f38
*pde = ma 00000000 pa 55555000
Oops: 0002 [#1]
SMP
Modules linked in:
CPU:    0
EIP:    0061:[<c0253f38>]    Not tainted VLI
EFLAGS: 00010286   (2.6.12-xenU)
EIP is at blk_start_queue+0x8/0x60
eax: 00000000   ebx: 00000000   ecx: 00000000   edx: fbffc000
esi: c1300004   edi: c12d6d83   ebp: c11bbf9c   esp: c11bbf28
ds: 007b   es: 007b   ss: 0069
Process xenwatch (pid: 10, threadinfo=c11ba000 task=c1191580)
Stack: c02642b2 c1300000 c02664de 00000000 c1300000 c0266fec c1300000 00000000
       00000802 00000000 00000200 c1300000 c030efb1 c11bbf78 c031c1c5 c030d9dc
       c11bbf70 00000000 00000200 00080000 00000000 c0266f00 c12d6ba0 c11ba000
Call Trace:
 [<c02642b2>] xenbus_dev_ok+0x32/0x60
 [<c02664de>] kick_pending_request_queues+0x1e/0x40
 [<c0266fec>] watch_for_status+0xec/0x140
 [<c0266f00>] watch_for_status+0x0/0x140
 [<c02648c7>] xenwatch_thread+0x87/0x140
 [<c0135f90>] autoremove_wake_function+0x0/0x60
 [<c0264840>] xenwatch_thread+0x0/0x140
 [<c0135a77>] kthread+0xc7/0xd0
 [<c01359b0>] kthread+0x0/0xd0
 [<c010758d>] kernel_thread_helper+0x5/0x18
Code: 00 00 00 8b 44 24 04 8b 48 60 ff e1 8d b4 26 00 00 00 00 81 44 24 04 a0 00
00 00 e9 e3 26 00 00 8d 76 00 53 83 ec 04 8b 5c 24 0c <f0> 0f ba b3 04 01 00 00
02 f0 0f ba ab 04 01 00 00 06 19 c0 85
 <6>IP: routing cache hash table of 1024 buckets, 8Kbytes


c0264280 <xenbus_dev_ok>:
c0264280:       53                      push   %ebx
c0264281:       83 ec 0c                sub    $0xc,%esp
c0264284:       8b 5c 24 14             mov    0x14(%esp),%ebx
c0264288:       8b 93 a4 00 00 00       mov    0xa4(%ebx),%edx
c026428e:       85 d2                   test   %edx,%edx
c0264290:       75 05                   jne    c0264297 <xenbus_dev_ok+0x17>
c0264292:       83 c4 0c                add    $0xc,%esp
c0264295:       5b                      pop    %ebx
c0264296:       c3                      ret
c0264297:       c7 44 24 08 4d 74 30    movl   $0xc030744d,0x8(%esp)
c026429e:       c0
c026429f:       8b 43 04                mov    0x4(%ebx),%eax
c02642a2:       c7 04 24 00 00 00 00    movl   $0x0,(%esp)
c02642a9:       89 44 24 04             mov    %eax,0x4(%esp)
c02642ad:       e8 0e fc ff ff          call   c0263ec0 <xenbus_rm>
c02642b2:       85 c0                   test   %eax,%eax
c02642b4:       75 0f                   jne    c02642c5 <xenbus_dev_ok+0x45>
c02642b6:       c7 83 a4 00 00 00 00    movl   $0x0,0xa4(%ebx)
c02642bd:       00 00 00
c02642c0:       83 c4 0c                add    $0xc,%esp
c02642c3:       5b                      pop    %ebx
c02642c4:       c3                      ret
c02642c5:       8b 43 04                mov    0x4(%ebx),%eax
c02642c8:       c7 04 24 1c e3 31 c0    movl   $0xc031e31c,(%esp)
c02642cf:       89 44 24 04             mov    %eax,0x4(%esp)
c02642d3:       e8 98 a9 eb ff          call   c011ec70 <printk>
c02642d8:       83 c4 0c                add    $0xc,%esp
c02642db:       5b                      pop    %ebx
c02642dc:       c3                      ret
c02642dd:       8d 76 00                lea    0x0(%esi),%esi

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