[Xen-devel] Kernel BUG at mm/rmap.c:486

[David F Barrera <dfbp@xxxxxxxxxx>]

I am seeing a kernel bug trace with changeset 8737 on x86_64 machines:

tg3: eth1: Link is up at 1000 Mbps, full duplex.
tg3: eth1: Flow control is off for TX and off for RX.
ACPI: Power Button (FF) [PWRF]
ACPI: Processor [CPU3] (supports 8 throttling states)
xenbr0: port 2(peth1) entering disabled state
xenbr0: port 1(vif0.0) entering disabled state
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at mm/rmap.c:486
invalid operand: 0000 [1]
CPU 0
Modules linked in: ipt_physdev iptable_filter ip_tables thermal
processor fan button battery ac
Pid: 10314, comm: xenstored Not tainted 2.6.15-xen0 #1
RIP: e030:[<ffffffff801690c6>] <ffffffff801690c6>{page_remove_rmap+22}
RSP: e02b:ffff88000dd25bc8  EFLAGS: 00010286
RAX: 00000000ffffffff RBX: 00002aaaaaac1000 RCX: 0000000000000021
RDX: 0000000000000000 RSI: ffffffff805d5820 RDI: ffff880001000738
RBP: ffff88000dd25bc8 R08: 0000000000000021 R09: 0000000000010200
R10: 0000000000007ff0 R11: 0000000000000000 R12: ffff88000ec9d608
R13: ffff880001000738 R14: 0000000000000000 R15: ffff88000dd25c98
FS:  0000000000000000(0000) GS:ffffffff80633800(0000)
knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process xenstored (pid: 10314, threadinfo ffff88000dd24000, task
ffff880007079180)
Stack: ffff88000dd25cc8 ffffffff8015fa7f 00002aaaaaac1fff
00002aaaaaac1fff
       00002aaaaaac1fff 8000000002821067 ffffffff00000000
ffff880006074b00
       00002aaaaaac2000 ffff88000ec<ffffffff80164d12>{exit_mmap+98}
       <ffffffff8012daf3>{mmput+35} <ffffffff801312ac>{exit_mm+204}
       <ffffffff80132e59>{do_exit+505}
<ffffffff80139ba2>{recalc_sigpending+18}
       <ffffffff8013aef8>{__dequeue_signal+488}
<ffffffff801338bd>{do_group_exit+205}
       <ffffffff8013cf37>{get_signal_to_deliver+1447}
<ffffffff8011020d>{do_signal+125}
       <ffffffff80186518>{sys_select+1064}
<ffffffff80110e85>{sysret_signal+39}
       <ffffffff801108af>{do_notify_resume+47} <ffffffff801md: stopping
all md devices.
md: md0 switched to read-only mode.
Restarting system.
.
(XEN) Domain 0 shutdown: rebooting machine.



-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


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