2.6.6-mm5 oops mounting ext3 or reiserfs with -o barrier

[Lorenzo Allegrucci]

I get a 100% reproducible oops mounting an ext3 or reiserfs
partition with -o barrier enabled.
Hand written oops (for ext3):

hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hda: drive_cmd: error=0x04 { DriveStatusError }
end_request: I/O error, dev hda, sector 84666781
------------[ cut here ]------------
kernel BUG at include/linux/blkdev.h:576!
invalid operand: 0000 [#1]
PREEMPT
Modules linked in: lp emu10k1 sound soundcore ac97_codec unix
CPU:    0
EIP:    0060:[<c02125ae>]    Not tainted VLI
EFLAGS: 00010046   (2.6.6-mm5)
EIP is at __ide_end_request+0xbe/0x110
eax: 00000e7a   ebx: da88636c   ecx: 00000000   edx: da88636c
esi: 00000000   edi: c038180c   ebp: 00000008   esp: c0368ec4
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 0, threadinfo=c0368000 task=c02d1a40)
Stack: 00000001 00000008 da88636c 050be99d 00000000 c02128fc 00000008 c0116718
       00000000 c036bb01 00000246 00000001 00000000 c038180c 00000286 c0368000
       dffdfa78 c038180c c0212a79 c02abc65 c0381760 042aa50a 00000051 dffdf951
Call Trace:
 [<c02128fc>] ide_complete_barrier+0xec/0x160
 [<c0116718>] release_console_sem+0xc8/0xe0
 [<c0212a79>] ide_end_drive_cmd+0x109/0x370
 [<c021d54c>] idedisk_error+0x6c/0x1f0
 [<c02024d2>] end_that_request_last+0x52/0xb0
 [<c021258c>] __ide_end_request+0x9c/0x110
 [<c01fefc2>] elv_queue_empty+0x12/0x20
 [<c0213548>] ide_do_request+0x78/0x390
 [<c0213059>] drive_cmd_intr+0x79/0xd0
 [<c0213cd3>] ide_intr+0xd3/0x170
 [<c0212fe0>] drive_cmd_intr+0x0/0xd0
 [<c0106f60>] handle_IRQ_event+0x30/0x60
 [<c01072b0>] do_IRQ+0xc0/0x1a0
========================
 [<c01058c8>] common_interrupt+0x18/0x20
 [<c01038d3>] default_idle+0x23/0x30
 [<c010393c>] cpu_idle+0x2c/0x40
 [<c03455d9>] start_kernel+0x179/0x1c0
 [<c0345320>] unknown_bootoption+0x0/0x110

Code: 75 1d 89 d8 e8 f4 fe fe ff 8b 47 70 8b 40 08 c7 40 20 00 00 00 00 c7 04
 <0>Kernel panic: Fatal exception in interrupt
In interrupt handler - not syncing


hda is a Maxtor 6Y060L0

-- 
Lorenzo
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