2.6.15 __disk_stat_add() called without preempt disabled

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2.6.15 on ia64, gcc 3.3.3, CONFIG_PREEMPT_DEBUG=y.

scsi(0): Resetting Cmnd=0xe00000b479ea7810, Handle=0x0000000000000001, action=0x0
scsi(0): Resetting Cmnd=0xe00000b479ea79e8, Handle=0x0000000000000002, action=0x0
scsi(0): Resetting Cmnd=0xe00000b479ea63c8, Handle=0x0000000000000003, action=0x0
scsi(0): Resetting Cmnd=0xe00000b479ea7810, Handle=0x0000000000000202, action=0x2
scsi(0:0:2:0): Queueing device reset command.
qla2300 0000:03:01.0: Mailbox command timeout occured. Issuing ISP abort.
qla2300 0000:03:01.0: Performing ISP error recovery - ha= e0000034790b4518.
scsi(0): mailbox timed out, mailbox0 4000, ictrl 0006, istatus 6006
qla2300 0000:03:01.0: LIP reset occured (f7f7).
qla2300 0000:03:01.0: LOOP UP detected (2 Gbps).
qla2300 0000:03:01.0: scsi(2:2:1): Abort command issued -- 2ea 2003.
sd 2:0:2:1: scsi: Device offlined - not ready after error recovery
sd 2:0:2:1: scsi: Device offlined - not ready after error recovery
BUG: using smp_processor_id() in preemptible [00000001] code: scsi_eh_2/4665
caller is __end_that_request_first+0x1b0/0x8e0

Call Trace:
 [<a000000100013280>] show_stack+0x40/0xa0
                                sp=e00000b007dbfc00 bsp=e00000b007db90e8
 [<a000000100013b10>] dump_stack+0x30/0x60
                                sp=e00000b007dbfdd0 bsp=e00000b007db90d0
 [<a0000001003d7880>] debug_smp_processor_id+0x160/0x1a0
                                sp=e00000b007dbfdd0 bsp=e00000b007db90b0
 [<a000000100399c90>] __end_that_request_first+0x1b0/0x8e0
                                sp=e00000b007dbfdd0 bsp=e00000b007db9028
 [<a00000010039a3f0>] end_that_request_chunk+0x30/0x60
                                sp=e00000b007dbfdd0 bsp=e00000b007db8ff0
 [<a00000010052f6f0>] scsi_end_request+0x50/0x1e0
                                sp=e00000b007dbfdd0 bsp=e00000b007db8fb0
 [<a00000010052fc60>] scsi_io_completion+0x3e0/0x840
 [<a00000010055dfe0>] sd_rw_intr+0x460/0x480
                                sp=e00000b007dbfde0 bsp=e00000b007db8ec8
 [<a000000100522750>] scsi_finish_command+0x150/0x180
                                sp=e00000b007dbfe00 bsp=e00000b007db8e98
 [<a00000010052c0d0>] scsi_error_handler+0x1230/0x15e0
                                sp=e00000b007dbfe00 bsp=e00000b007db8e28
 [<a0000001000c68a0>] kthread+0x1a0/0x220
                                sp=e00000b007dbfe20 bsp=e00000b007db8de8
 [<a000000100011860>] kernel_thread_helper+0xe0/0x100
                                sp=e00000b007dbfe30 bsp=e00000b007db8dc0
 [<a000000100009120>] start_kernel_thread+0x20/0x40
                                sp=e00000b007dbfe30 bsp=e00000b007db8dc0

__end_that_request_first() calls __disk_stat_add() [inlined] without
disabling preemption.

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