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

["Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx>]

I am also seeing this on x86_64 machines.

Aravindh

xenbr0: port 2(peth0) 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 dm_snapshot dm_mod
Pid: 3548, comm: xenstored Not tainted 2.6.15-xen0 #1
RIP: e030:[<ffffffff801690c6>] <ffffffff801690c6>{page_remove_rmap+22}
RSP: e02b:ffff880013c01bc8  EFLAGS: 00010286
RAX: 00000000ffffffff RBX: 00002aaaaaac1000 RCX: 000000000001fce4
RDX: 0000000000000000 RSI: ffffffff805b1f20 RDI: ffff8800016f51e0
RBP: ffff880013c01bc8 R08: 000000000001fce4 R09: 0000000000020800
R10: 0000000000007ff0 R11: 0000000000000000 R12: ffff8800171ec608
R13: ffff8800016f51e0 R14: 0000000000000000 R15: ffff880013c01c98
FS:  0000000000000000(0000) GS:ffffffff8060f800(0000)
knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process xenstored (pid: 3548, threadinfo ffff880013c00000, task
ffff880016ccc240)
Stack: ffff880013c01cc8 ffffffff8015fa7f 00002aaaaaac1fff
00002aaaaaac1fff 
       00002aaaaaac1fff 80000000bf11b067 ffffffff00000000
ffff88001682da80 
       00002aaaaaac2000 ffff8800171edaa8 
Call Trace:<ffffffff8015fa7f>{unmap_vmas+1807}
<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}
<ffffffff80111121>{ptregscall_common+61}
       

Code: 0f 0b 68 b1 99 47 80 c2 e6 01 48 c7 c6 ff ff ff ff bf 20 00 
RIP <ffffffff801690c6>{page_remove_rmap+22} RSP <ffff880013c01bc8>
 <1>Fixing recursive fault but reboot is needed!
md: stopping all md devices.
md: md0 switched to read-only mode.
Synchronizing SCSI cache for disk sdb: 
Synchronizing SCSI cache for disk sda: 
Restarting system.
.
(XEN) Domain 0 shutdown: rebooting machine.

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