[Pkg-xen-devel] Kernel bug in latest 2.6.26

[Nephila]

We are testing newer 2.6.26 xen builds and we found one major problem.
We have a heavy cpu and disk bound batch application running on our Dom0 and 
it consistenly fails within 16~17 hours of execution with the error below 
(intercepted via netconsole); 2.6.18 xen etch kernel works fine


Oct 23 23:47:46 prometeo [59299.638886] Eeek! page_mapcount(page) went 
negative! (-1)
Oct 23 23:47:46 prometeo [59299.638932]  page pfn = 4
Oct 23 23:47:46 prometeo [59299.638949]  page->flags = 0
Oct 23 23:47:46 prometeo [59299.638970]  page->count = 1
Oct 23 23:47:46 prometeo [59299.638987]  page->mapping = 0000000000000000
Oct 23 23:47:46 prometeo [59299.639017]  vma->vm_ops = 0x0
Oct 23 23:47:46 prometeo [59299.639047] ------------[ cut here ]------------
Oct 23 23:47:46 prometeo [59299.639067] kernel BUG at mm/rmap.c:673!
Oct 23 23:47:46 prometeo [59299.639085] invalid opcode: 0000 [1]
Oct 23 23:47:46 prometeo SMP
Oct 23 23:47:46 prometeo
Oct 23 23:47:46 prometeo [59299.639109] CPU 0
Oct 23 23:47:46 prometeo
Oct 23 23:47:46 prometeo [59299.639127] Modules linked in:
Oct 23 23:47:46  bridge
Oct 23 23:47:46  netloop
Oct 23 23:47:46  video
Oct 23 23:47:46  output
Oct 23 23:47:46  ac
Oct 23 23:47:46  battery
Oct 23 23:47:46  ipv6
Oct 23 23:47:46  nfsd
Oct 23 23:47:46  auth_rpcgss
Oct 23 23:47:46  exportfs
Oct 23 23:47:46  nfs
Oct 23 23:47:46  lockd
Oct 23 23:47:46  nfs_acl
Oct 23 23:47:46  sunrpc
Oct 23 23:47:46  xfs
Oct 23 23:47:46  netconsole
Oct 23 23:47:46  configfs
Oct 23 23:47:46  it87
Oct 23 23:47:46  hwmon_vid
Oct 23 23:47:46  sbp2
Oct 23 23:47:46  loop
Oct 23 23:47:46  pcspkr
Oct 23 23:47:46  k8temp
Oct 23 23:47:46  pl2303
Oct 23 23:47:46  usbserial
Oct 23 23:47:46  i2c_nforce2
Oct 23 23:47:46  i2c_core
Oct 23 23:47:46  button
Oct 23 23:47:46  evdev
Oct 23 23:47:46  ext3
Oct 23 23:47:46  jbd
Oct 23 23:47:46  mbcache
Oct 23 23:47:46  dm_mirror
Oct 23 23:47:46  dm_log
Oct 23 23:47:46  dm_snapshot
Oct 23 23:47:46  dm_mod
Oct 23 23:47:46  raid0
Oct 23 23:47:46  md_mod
Oct 23 23:47:46  sd_mod
Oct 23 23:47:46  ide_pci_generic
Oct 23 23:47:46  amd74xx
Oct 23 23:47:46  ide_core
Oct 23 23:47:46  forcedeth
Oct 23 23:47:46  ohci1394
Oct 23 23:47:46  ieee1394
Oct 23 23:47:46  sata_nv
Oct 23 23:47:46  ata_generic
Oct 23 23:47:46  libata
Oct 23 23:47:46  scsi_mod
Oct 23 23:47:46  dock
Oct 23 23:47:46  ehci_hcd
Oct 23 23:47:46  ohci_hcd
Oct 23 23:48:52 prometeo [59365.039659] Pid: 5771, comm: python2.5 Tainted: G      
D   2.6.26-1-xen-amd64 #1
Oct 23 23:48:52 prometeo [59365.039659] R13: ffff880003abd818 R14: 
0000000000000001 R15: 0000000072781000
Oct 23 23:48:52 prometeo [59365.039659] [<ffffffff80435d4e>] ? 
_spin_lock+0x3a/0x42
Oct 23 23:48:52 prometeo [59365.039659] [<ffffffff8022a73d>] ? mmput+0x2c/0xc0
Oct 23 23:48:52 prometeo [59365.039659] [<ffffffff8027c550>] ? 
page_remove_rmap+0xfb/0x117
Oct 23 23:48:52 prometeo [59365.039659]

Any suggestions?

Thanks

-- 

Nephila sas
PGP key block: http://www.nephila.it/pgp
-- 

Saluti

Nephila sas
PGP key block: http://www.nephila.it/pgp