[BUG] 2.6.0-test3 and cciss driver (or blk_queue_hardsect_size)

[HABBINGA,ERIK (HP-Loveland,ex1)]

I'm wondering if anyone else is having problems with 2.6.0-test3 and the
cciss driver, or with the function blk_queue_hardsect_size.  I was able to
successfully boot 2.6.0-test2 in previous weeks, but trying 2.6.0-test3
today gave me:

Compaq CISS Driver (v 2.5.0)
cciss: using DAC cycles
      blocks= 35553120 block_size= 512
      heads= 255, sectors= 32, cylinders= 4357

Unable to handle kernel NULL pointer dereference at virtual address 0000018e
 printing eip:
c0280f88
*pde = 00104001
*pte = 00000000
Oops: 0002 [#1]
CPU:    0
EIP:    0060:[<c0280f88>]    Not tainted
EFLAGS: 00010206
EIP is at blk_queue_hardsect_size+0x8/0x10
eax: 00000000   ebx: f7c92380   ecx: 00000000   edx: 00000200
esi: c27a144c   edi: 00000000   ebp: 00000000   esp: c254fee0
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 1, threadinfo=c254e000 task=c254d900)
Stack: c047e98b 00000000 00000200 00000000 00000000 c27a1400 00000000
00000000
       00000068 c03fc620 ffffffed c2588000 c03fc648 c02446dc c2588000
c0385bfc
       c2588000 c03fc620 ffffffed c02447fb c03fc620 c2588000 c03fc620
c2588000
Call Trace:
 [<c047e98b>] cciss_init_one+0x4f1/0x548
 [<c02446dc>] pci_device_probe_static+0x52/0x64
 [<c02447fb>] __pci_device_probe+0x3b/0x4e
 [<c024483d>] pci_device_probe+0x2f/0x4e
 [<c027edab>] bus_match+0x45/0x74
 [<c027eeb3>] driver_attach+0x59/0x5e
 [<c027f134>] bus_add_driver+0x94/0xa8
 [<c0244adf>] pci_register_driver+0x7f/0x9e
 [<c047e9fd>] cciss_init+0x1b/0x20
 [<c046884e>] do_initcalls+0x28/0x94
 [<c012c70f>] init_workqueues+0xf/0x26
 [<c01050a8>] init+0x4c/0x1a8
 [<c010505c>] init+0x0/0x1a8
 [<c010703d>] kernel_thread_helper+0x5/0xc

Code: 66 89 90 8e 01 00 00 c3 83 ec 10 89 5c 24 0c 8b 5c 24 18 81
 <0>Kernel panic: Attempted to kill init!

I haven't seen any traffic today on LKML about problems with cciss or
blk_queue_hardsect_size.  I'll start debugging myself, but if this looks
obvious to someone, let me know.

The system in question is a 4 CPU XEON 1.9 GHz machine w/ 2 GB ram.  Two
drives are attached to the cciss as a mirrored pair (RAID 1).

Thanks,
Erik Habbinga
Hewlett Packard
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