2.4.21 oops on boot w/PDC20267

Hi,

Upon compiling and installing 2.4.21 for the first time I get an oops upon loading the older of the new Promise driver modules:

Jun 22 21:59:31 K7 kernel: PDC20267: IDE controller at PCI slot 00:0f.0
Jun 22 21:59:31 K7 kernel: PCI: Found IRQ 5 for device 00:0f.0
Jun 22 21:59:31 K7 kernel: PCI: Sharing IRQ 5 with 00:02.2
Jun 22 21:59:31 K7 kernel: PDC20267: chipset revision 2
Jun 22 21:59:31 K7 kernel: PDC20267: not 100%% native mode: will probe irqs later
Jun 22 21:59:31 K7 kernel: PDC20267: ROM enabled at 0xcffd0000
Jun 22 21:59:31 K7 kernel: Unable to handle kernel paging request at virtual address a928af1a
Jun 22 21:59:31 K7 kernel:  printing eip:
Jun 22 21:59:31 K7 kernel: a928af1a
Jun 22 21:59:31 K7 kernel: *pde = 00000000
Jun 22 21:59:31 K7 kernel: Oops: 0000
Jun 22 21:59:31 K7 kernel: CPU:    0
Jun 22 21:59:31 K7 kernel: EIP: 0010:[zisofs_cleanup+-1456951734/-1072693456]    Not tainted
Jun 22 21:59:31 K7 kernel: EFLAGS: 00010246
Jun 22 21:59:31 K7 kernel: eax: e0a1a7f8   ebx: de093e6a   ecx: 00000007 
  edx: 00000000
Jun 22 21:59:31 K7 kernel: esi: c02b5a08   edi: dffe2c00   ebp: de093e6c 
  esp: de093e50
Jun 22 21:59:31 K7 kernel: ds: 0018   es: 0018   ss: 0018
Jun 22 21:59:31 K7 kernel: Process modprobe (pid: 364, stackpage=de093000)
Jun 22 21:59:31 K7 kernel: Stack: c02857a5 c01bf478 c02b5a08 c02b5a08 e0a1a816 e0a1f002 0007f7cf e0a1a7f8
Jun 22 21:59:31 K7 kernel:        c01bf843 dffe2c00 e0a1a7f8 c02b5a08 dffe2c00 dffe2c00 e0a1a920 00000000
Jun 22 21:59:31 K7 kernel:        00000000 00000005 00000001 00000000 00000000 ce12452b 00000000 c01bf8b7
Jun 22 21:59:31 K7 kernel: Call Trace:    [ide_hwif_setup_dma+72/256] [<e0a1a816>] [<e0a1a7f8>] [do_ide_setup_pci_device+531/624] [<e0a1a7f8>]
Jun 22 21:59:31 K7 kernel:   [<e0a1a920>] [ide_setup_pci_device+23/32] [<e0a1a7f8>] [<e0a19aaf>] [<e0a1a7f8>] [<e0a19af7>]
Jun 22 21:59:31 K7 kernel:   [<e0a1a7f8>] [<e0a1a8cc>] [pci_announce_device+53/80] [<e0a1a8cc>] [<e0a1a920>] [pci_register_driver+68/96]
Jun 22 21:59:31 K7 kernel:   [<e0a1a920>] [<e0a1a920>] [ide_pci_register_driver+21/80] [<e0a1a920>] [<e0a19b1a>] [<e0a1a920>]
Jun 22 21:59:31 K7 kernel:   [sys_init_module+1393/1584] [<e0a18060>] [system_call+51/56]

I ran ksymoops after reinstalling 2.4.20 and got the following

ksymoops 2.4.5 on i686 2.4.20. Options used

-----------snip--------------

Jun 22 21:59:31 K7 kernel: Unable to handle kernel paging request at virtual address a928af1a
Jun 22 21:59:31 K7 kernel: a928af1a
Jun 22 21:59:31 K7 kernel: *pde = 00000000
Jun 22 21:59:31 K7 kernel: Oops: 0000
Jun 22 21:59:31 K7 kernel: CPU:    0
Jun 22 21:59:31 K7 kernel: EIP: 0010:[zisofs_cleanup+-1456951734/-1072693456]    Not tainted
Jun 22 21:59:31 K7 kernel: EFLAGS: 00010246
Jun 22 21:59:31 K7 kernel: eax: e0a1a7f8   ebx: de093e6a   ecx: 00000007 
  edx: 00000000
Jun 22 21:59:31 K7 kernel: esi: c02b5a08   edi: dffe2c00   ebp: de093e6c 
  esp: de093e50
Jun 22 21:59:31 K7 kernel: ds: 0018   es: 0018   ss: 0018
Jun 22 21:59:31 K7 kernel: Process modprobe (pid: 364, stackpage=de093000)
Jun 22 21:59:31 K7 kernel: Stack: c02857a5 c01bf478 c02b5a08 c02b5a08 e0a1a816 e0a1f002 0007f7cf e0a1a7f8
Jun 22 21:59:31 K7 kernel:        c01bf843 dffe2c00 e0a1a7f8 c02b5a08 dffe2c00 dffe2c00 e0a1a920 00000000
Jun 22 21:59:31 K7 kernel:        00000000 00000005 00000001 00000000 00000000 ce12452b 00000000 c01bf8b7
Jun 22 21:59:31 K7 kernel: Call Trace:    [ide_hwif_setup_dma+72/256] [<e0a1a816>] [<e0a1a7f8>] [do_ide_setup_pci_device+531/624] [<e0a1a7f8>]
Jun 22 21:59:31 K7 kernel:   [<e0a1a920>] [ide_setup_pci_device+23/32] [<e0a1a7f8>] [<e0a19aaf>] [<e0a1a7f8>] [<e0a19af7>]
Jun 22 21:59:31 K7 kernel:   [<e0a1a7f8>] [<e0a1a8cc>] [pci_announce_device+53/80] [<e0a1a8cc>] [<e0a1a920>] [pci_register_driver+68/96]
Jun 22 21:59:31 K7 kernel:   [<e0a1a920>] [<e0a1a920>] [ide_pci_register_driver+21/80] [<e0a1a920>] [<e0a19b1a>] [<e0a1a920>]
Jun 22 21:59:31 K7 kernel: Code:  Bad EIP value

Using defaults from ksymoops -t elf32-i386 -a i386