Kernel Oops at iov_iter_advance

in dom0, uname:
Linux moonraker 2.6.24-18-xen #1 SMP Wed May 28 22:50:01 UTC 2008 x86_64 GNU/Linux

it happened while regenerating locales:

[318593.536096] Unable to handle kernel paging request at ffff8800f26b4008 RIP:
[318593.536134] [<ffffffff80271fc6>] iov_iter_advance+0x66/0x80
[318593.536194] PGD 27b2067 PUD 2db6067 PMD 2f4a067 PTE 0
[318593.536233] Oops: 0000 [1] SMP
[318593.536263] CPU 0
[318593.536288] Modules linked in: nfs lockd nfs_acl sunrpc autofs4 binfmt_misc rfcomm l2cap bluetooth xt_physdev bridge video output dock sbs sbshc battery iptable_filter ip_tables x_tables ac eeprom lm92 w83781d hwmon_vid i2c_i801 i2c_core lp ipv6 container iTCO_wdt iTCO_vendor_support parport_pc button evdev parport shpchp pci_hotplug 8250_pnp 8250 serial_core pcspkr psmouse ext3 jbd mbcache sr_mod cdrom ata_piix pata_acpi sg sd_mod floppy ahci ata_generic ehci_hcd libata e1000 uhci_hcd usbcore 3w_9xxx scsi_mod raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod dm_mirror dm_snapshot dm_mod thermal processor fan fuse
[318593.536760] Pid: 13807, comm: localedef Not tainted 2.6.24-18-xen #1
[318593.536795] RIP: e030:[<ffffffff80271fc6>] [<ffffffff80271fc6>] iov_iter_advance+0x66/0x80
[318593.536848] RSP: e02b:ffff88000ffb3b10 EFLAGS: 00010246
[318593.536876] RAX: 0000000000000000 RBX: 0000000000000126 RCX: 0000000000000000
[318593.536922] RDX: 0000000000000000 RSI: 0000000000000126 RDI: ffff88000ffb3ba8
[318593.536967] RBP: 0000000000000126 R08: 0000000000000000 R09: 0000000000000000
[318593.537013] R10: ffff8800f26b4000 R11: 0000000000000000 R12: 0000000000000000
[318593.537059] R13: 0000000000001000 R14: ffff8800eae79b88 R15: 0000000000000000
[318593.537107] FS: 00007fe2284b76e0(0000) GS:ffffffff805c6000(0000) knlGS:0000000000000000
[318593.537154] CS: e033 DS: 0000 ES: 0000
[318593.537180] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[318593.537226] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[318593.537273] Process localedef (pid: 13807, threadinfo ffff88000ffb2000, task ffff8800f1371800)
[318593.537321] Stack: ffffffff80273f9e 0000000000001000 ffff880069e166b8 0000000000000000
[318593.537382] ffff88000ffb3db8 0000000000000000 ffff88000ffb3d38 ffff880061f65a40
[318593.537440] ffff8800eae79b88 ffffffff881f7ac0 ffff8800eae79a78 0000000000000000
[318593.537479] Call Trace:
[318593.537521] [<ffffffff80273f9e>] generic_file_buffered_write+0x1de/0x6e0
[318593.537564] [<ffffffff881f452c>] :ext3:__ext3_journal_dirty_metadata+0x2c/0x70
[318593.537613] [<ffffffff8023ab0e>] current_fs_time+0x1e/0x30
[318593.537645] [<ffffffff802746ef>] __generic_file_aio_write_nolock+0x24f/0x400
[318593.537696] [<ffffffff802c3af6>] __getblk+0x26/0x250
[318593.537726] [<ffffffff80274904>] generic_file_aio_write+0x64/0xd0
[318593.537762] [<ffffffff881e4663>] :ext3:ext3_file_write+0x23/0xc0
[318593.537796] [<ffffffff881e4640>] :ext3:ext3_file_write+0x0/0xc0
[318593.537828] [<ffffffff8029d6bb>] do_sync_readv_writev+0xcb/0x110
[318593.537862] [<ffffffff8024cc20>] autoremove_wake_function+0x0/0x30
[318593.537894] [<ffffffff802a5d30>] permission+0xb0/0x160
[318593.537924] [<ffffffff802a777f>] may_open+0xcf/0x290
[318593.537952] [<ffffffff8029a30c>] __kmalloc+0x13c/0x160
[318593.537984] [<ffffffff8029de5d>] do_readv_writev+0xfd/0x230
[318593.538015] [<ffffffff8029bdda>] do_filp_open+0x3a/0x50
[318593.538049] [<ffffffff8029e4d3>] sys_writev+0x53/0xc0
[318593.538080] [<ffffffff8020c698>] system_call+0x68/0x6d
[318593.538110] [<ffffffff8020c630>] system_call+0x0/0x6d
[318593.538139]
[318593.538160]
[318593.538161] Code: 49 8b 52 08 49 89 d3 eb c4 4c 89 17 4c 89 4f 10 eb 99 0f 1f
[318593.538287] RIP [<ffffffff80271fc6>] iov_iter_advance+0x66/0x80
[318593.538321] RSP <ffff88000ffb3b10>
[318593.538345] CR2: ffff8800f26b4008
[318593.538870] ---[ end trace fede477ecacbf75c ]---