on x86_64, 2 CPU + HT, 4 GB RAM:
reiserfs with blocksize of 1 KB, data=ordered
[ 9828.242431] ------------[ cut here ]------------

[ 9828.247056] kernel BUG at fs/reiserfs/journal.c:531!

[ 9828.252017] invalid opcode: 0000 [1] SMP

[ 9828.256070] CPU 0

[ 9828.258105] Modules linked in: reiserfs loop

[ 9828.262428] Pid: 16555, comm: pdflush Not tainted 2.6.23-rc6-git3 #1

[ 9828.268775] RIP: 0010:[<ffffffff8802832d>]  [<ffffffff8802832d>] :reiserfs:reiserfs_in_journal+0x10c/0x189

[ 9828.278457] RSP: 0018:ffff81010e749610  EFLAGS: 00010246

[ 9828.283766] RAX: 00000000000025e7 RBX: ffff81010e749664 RCX: 0000000000000f8f

[ 9828.290893] RDX: ffffc2001031b390 RSI: 00000000000025e7 RDI: ffff81011e4be000

[ 9828.298021] RBP: ffff81010e749620 R08: ffffc20010282000 R09: ffff81011e4be000

[ 9828.305149] R10: 00000000000005e7 R11: 0000000000000008 R12: ffff81011e4be000

[ 9828.312276] R13: ffff81010e749734 R14: ffff8101077115a8 R15: 0000000000000001

[ 9828.319404] FS:  0000000000000000(0000) GS:ffffffff80736000(0000) knlGS:0000000000000000

[ 9828.327484] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b

[ 9828.333226] CR2: 00002b61d730c000 CR3: 000000011d463000 CR4: 00000000000006e0

[ 9828.340354] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

[ 9828.347481] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

[ 9828.354609] Process pdflush (pid: 16555, threadinfo ffff81010e748000, task ffff8101108bb040)

[ 9828.363035] Stack:  00000000000025e6 00000000000005e7 ffff81010e749690 ffffffff8800830a

[ 9828.371115]  000000011e853bd8 0000200000000001 ffff81011b88b1c0 ffffc20000072004

[ 9828.378563]  000005e60e749660 ffffffff8055cd05 000000000e749690 ffff81010e7498b0

[ 9828.385829] Call Trace:

[ 9828.388481]  [<ffffffff8800830a>] :reiserfs:scan_bitmap_block+0xe2/0x2ac

[ 9828.395179]  [<ffffffff8055cd05>] _spin_unlock+0x9/0xb

[ 9828.400318]  [<ffffffff880095f0>] :reiserfs:reiserfs_allocate_blocknrs+0x8dd/0xae7

[ 9828.407890]  [<ffffffff880210...
[ message continues ]

~~~~~~~~~~~~~~~~~~
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~Randy

*** Remember to use Documentation/SubmitChecklist when testing your code ***

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