2.6.0-test3-mm2: JFS/cryptoapi OOPS

trying to run 'mkfs.jfs /dev/loop1' on a file backed cryptoloop using aes creates following OOPS. System is a P3m, UP with enabled preemption.

kernel BUG at mm/filemap.c:1930!
invalid operand: 0000 [#1]
PREEMPT

CPU:    0
EIP:    0060:[<c013e919>]    Not tainted VLI
EFLAGS: 00010282

EIP is at generic_file_aio_write_nolock+0xe9/0x100
eax: c1523c20 ebx: 0ff01000 ecx: c156bdab edx: c014b1ab
esi: 00000000 edi: cfc19f6c ebp: cfc19e84 esp: cfc19e40
ds: 007b es: 007b ss: 0068
Process mkfs.jfs (pid: 8985, threadinfo=cfc18000 task=cb42b920)

Stack: 00000000 cfc18000 c03837d0 c0383898 c03837d0 cf84dba0 cf84dc30 cbd635e0 
       cfc19e84 cbd635e0 0ff01000 00000000 c013ea92 cfc19e84 cfc19f6c 00000001 
       cbd63600 00000000 00000002 00000000 00000001 ffffffff cbd635e0 c20a630c 
Call Trace:
 [<c013ea92>] __crc_generic_read_dir+0x14/0x32
 [<c014b1ab>] do_anonymous_page+0x13b/0x250
 [<c011d630>] autoremove_wake_function+0x0/0x50
 [<c01192dc>] do_page_fault+0x23c/0x456
 [<c01d94b2>] tty_read+0xf2/0x170
 [<c0163107>] blkdev_file_write+0x37/0x40
 [<c0159ce2>] vfs_write+0xe2/0x150
 [<c0159e02>] sys_write+0x42/0x70
 [<c03320cb>] syscall_call+0x7/0xb

Code: f2 90 89 7c 24 04 8b 44 24 40 c7 44 24 08 01 00 00 00 89 2c 24 89 44 24 0c e8 74 f3 ff ff 83 7d 10 ff 89 c7 75 cd e9 6f ff ff ff <0f> 0b 8a 07 9f a1 34 c0 e9 53 ff ff ff 8d 76 00 8d bc 27 00 00 

--Andreas

Any recommendations on how to setup a basic IA32 test bed to install this kernel?

Distro?
Version/release?
Compiler version?
glibc, binutils, etc.?

I want to test the 4GB/4GB stuff from Ingo but I'm having trouble getting a stable platform up and running.

We run with RedHat 9.0 for a distro.
See Documentation/Changes in your kernel src tree for the other versions you mentioned.
Also, see http://www.osdl.org/stp/ for information on how we setup our testbeds.
cliffw

It's a bogus check. Please just delete line 1930 of mm/filemap.c.