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    SubjectRe: [patch 0/5] [PATCH,RFC] vfs: per-superblock unused dentries list (2nd version)
    On Mon, Jun 19, 2006 at 11:21:04AM +1000, Neil Brown wrote:
    > On Monday June 19, dgc@sgi.com wrote:
    > >
    > > Ok. Send me the patch and I'll try to get some tests done on it...
    >
    > Below, thanks.

    Neil,

    I doubt I'm going to be able to run any tests for this patch on the
    current -mm (2.6.17-rc6-mm2) any time soon. I get an interrupt
    related BUG on boot in the sn2 console driver, and then a panic in
    the scsi I/o completion code when running mkfs.xfs. Both are
    reproducable.

    I don't have any other non-sn2 machine with enough memory in it to
    test the patch....

    The boot warnings:

    ....
    eth3 device: S2io Inc. Xframe 10 Gigabit Ethernet PCI-X (rev 03)
    eth3 configuration: eth-id-00:0c:fc:00:02:c8
    irq 60, desc: a0000001009a2d00, depth: 1, count: 0, unhandled: 0
    ->handle_irq(): 0000000000000000, 0x0
    ->chip(): a000000100a0fe40, irq_type_sn+0x0/0x80
    ->action(): e00000b007471b80
    ->action->handler(): a0000002059373d0, s2io_msi_handle+0x1510/0x660 [s2io] eth3
    IP address: 192.168.1.248/24
    Unexpected irq vector 0x3c on CPU 3!
    BUG: warning at drivers/serial/sn_console.c:976/sn_sal_console_write()

    Call Trace:
    [<a0000001000125a0>] show_stack+0x40/0xa0
    sp=e0000039ee2f7970 bsp=e0000039ee2f14b0
    [<a000000100012e30>] dump_stack+0x30/0x60
    sp=e0000039ee2f7b40 bsp=e0000039ee2f1498
    [<a0000001004e5350>] sn_sal_console_write+0x270/0x3e0
    sp=e0000039ee2f7b40 bsp=e0000039ee2f1420
    [<a0000001000a1d40>] __call_console_drivers+0x160/0x1c0
    sp=e0000039ee2f7b40 bsp=e0000039ee2f13e8
    [<a0000001000a1e80>] _call_console_drivers+0xe0/0x100
    sp=e0000039ee2f7b40 bsp=e0000039ee2f13b8
    [<a0000001000a2460>] release_console_sem+0x2c0/0x460
    sp=e0000039ee2f7b40 bsp=e0000039ee2f1378
    [<a0000001000a2cf0>] vprintk+0x6f0/0x880
    sp=e0000039ee2f7b40 bsp=e0000039ee2f12f0
    [<a0000001000a1f10>] printk+0x70/0xa0
    sp=e0000039ee2f7b80 bsp=e0000039ee2f1290
    [<a00000010000f530>] ack_bad_irq+0x30/0x60
    sp=e0000039ee2f7bc0 bsp=e0000039ee2f1270
    [<a0000001000f7ab0>] handle_bad_irq+0x410/0x440
    sp=e0000039ee2f7bc0 bsp=e0000039ee2f1230
    [<a0000001000f7c80>] __do_IRQ+0x80/0x3c0
    sp=e0000039ee2f7bc0 bsp=e0000039ee2f11d0
    [<a00000010000f790>] ia64_handle_irq+0xb0/0x160
    sp=e0000039ee2f7bc0 bsp=e0000039ee2f11a0
    [<a00000010000b1a0>] ia64_leave_kernel+0x0/0x290
    sp=e0000039ee2f7bc0 bsp=e0000039ee2f11a0
    [<a000000100010e80>] default_idle+0x120/0x160
    sp=e0000039ee2f7d90 bsp=e0000039ee2f1158
    [<a000000100011d90>] cpu_idle+0x1d0/0x2c0
    sp=e0000039ee2f7e30 bsp=e0000039ee2f1128
    [<a000000100051b70>] start_secondary+0x350/0x380
    sp=e0000039ee2f7e30 bsp=e0000039ee2f10e0
    [<a000000100008650>] __end_ivt_text+0x330/0x360
    sp=e0000039ee2f7e30 bsp=e0000039ee2f10e0
    eth3: Link down done
    .....


    And the panic from mkfs.xfs:

    budgie:~/dgc/jbod # sh jbd-mkfs
    meta-data=/dev/mapper/dm1 isize=256 agcount=5, agsize=1114112 blks
    = sectsz=512 attr=0
    data = bsize=16384 blocks=5570560, imaxpct=25
    = sunit=0 swidth=0 blks, unwritten=1
    naming =version 2 bsize=16384
    log =/dev/mapper/dm0 bsize=16384 blocks=8192, version=1
    = sectsz=512 sunit=0 blks
    realtime =none extsz=65536 blocks=0, rtextents=0
    idle[0]: Oops 8813272891392 [1]
    Modules linked in: ipv6 s2io sg

    Pid: 0, CPU 1, comm: idle
    psr : 0000101008022018 ifs : 800000000000038a ip : [<a00000010014c7c0>] Not tainted
    ip is at kmem_freepages+0x100/0x200
    unat: 0000000000000000 pfs : 000000000000050d rsc : 0000000000000003
    rnat: 800000000000048d bsps: 0000000000000000 pr : 80000000e7a95669
    ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70033f
    csd : 0000000000000000 ssd : 0000000000000000
    b0 : a00000010014cf30 b6 : a000000100003320 b7 : a000000100105fc0
    f6 : 1003e0000000000000045 f7 : 0ffdd8000000000000000
    f8 : 1000589ffec9800000000 f9 : 10004a000000000000000
    f10 : 1003e0000000000c1e09c f11 : 1003e00000000054d2444
    r1 : a000000100d953c0 r2 : 0000000000000001 r3 : 0000000000000001
    r8 : 0000000000000000 r9 : a0007fff5d4e0000 r10 : 0000000005bd8ff9
    r11 : 00000000068f7ff8 r12 : e0000039ee2bfb50 r13 : e0000039ee2b8000
    r14 : 0000000000d1efff r15 : 0000000000000080 r16 : ffffffffffffffff
    r17 : a0007fff8b3a8000 r18 : a000000100baece8 r19 : 0000000000000208
    r20 : e0000039ee3b98b8 r21 : 0000000000000000 r22 : 0000000000000080
    r23 : ffffffffffffff7f r24 : 0000000000000000 r25 : e000003078274000
    r26 : e00000347bffc000 r27 : 0000000000000000 r28 : e0000039ee2bfb60
    r29 : e00000347bffc020 r30 : 00000000000021b9 r31 : 0000000000000000

    Call Trace:
    [<a0000001000125a0>] show_stack+0x40/0xa0
    sp=e0000039ee2bf700 bsp=e0000039ee2b98c8
    [<a000000100012dd0>] show_regs+0x7d0/0x800
    sp=e0000039ee2bf8d0 bsp=e0000039ee2b9880
    [<a000000100033510>] die+0x230/0x340
    sp=e0000039ee2bf8d0 bsp=e0000039ee2b9838
    [<a0000001000564e0>] ia64_do_page_fault+0x860/0x9c0
    sp=e0000039ee2bf8f0 bsp=e0000039ee2b97d8
    [<a00000010000b1a0>] ia64_leave_kernel+0x0/0x290
    sp=e0000039ee2bf980 bsp=e0000039ee2b97d8
    [<a00000010014c7c0>] kmem_freepages+0x100/0x200
    sp=e0000039ee2bfb50 bsp=e0000039ee2b9788
    [<a00000010014cf30>] slab_destroy+0x1b0/0x260
    sp=e0000039ee2bfb50 bsp=e0000039ee2b9738
    [<a00000010014d300>] free_block+0x320/0x3c0
    sp=e0000039ee2bfb60 bsp=e0000039ee2b96e0
    [<a00000010014ccf0>] __cache_free+0x430/0x4c0
    sp=e0000039ee2bfb60 bsp=e0000039ee2b9688
    [<a00000010014db80>] kmem_cache_free+0x120/0x180
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9658
    [<a000000100105ff0>] mempool_free_slab+0x30/0x60
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9630
    [<a000000100106210>] mempool_free+0x130/0x160
    sp=e0000039ee2bfb70 bsp=e0000039ee2b95e8
    [<a000000100638760>] dec_pending+0x2c0/0x2e0
    sp=e0000039ee2bfb70 bsp=e0000039ee2b95a0
    [<a000000100638a80>] clone_endio+0x140/0x180
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9558
    [<a000000100168970>] bio_endio+0x110/0x140
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9520
    [<a0000001003dc2b0>] __end_that_request_first+0x390/0xac0
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9498
    [<a0000001003dca10>] end_that_request_chunk+0x30/0x60
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9468
    [<a000000100565d30>] scsi_end_request+0x50/0x1e0
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9420
    [<a0000001005663f0>] scsi_io_completion+0x3b0/0x8a0
    sp=e0000039ee2bfb70 bsp=e0000039ee2b9388
    [<a0000001005dd220>] sd_rw_intr+0x480/0x4a0
    sp=e0000039ee2bfb80 bsp=e0000039ee2b9338
    [<a00000010055a5f0>] scsi_finish_command+0x150/0x180
    sp=e0000039ee2bfba0 bsp=e0000039ee2b9308
    [<a000000100567910>] scsi_softirq_done+0x270/0x2a0
    sp=e0000039ee2bfba0 bsp=e0000039ee2b92e0
    [<a0000001003d8e60>] blk_done_softirq+0x160/0x1c0
    sp=e0000039ee2bfbb0 bsp=e0000039ee2b92c8
    [<a0000001000afff0>] __do_softirq+0xd0/0x240
    sp=e0000039ee2bfbc0 bsp=e0000039ee2b9250
    [<a0000001000b01e0>] do_softirq+0x80/0xe0
    sp=e0000039ee2bfbc0 bsp=e0000039ee2b91e8
    [<a0000001000b0520>] irq_exit+0x80/0xc0
    sp=e0000039ee2bfbc0 bsp=e0000039ee2b91d0
    [<a00000010000f810>] ia64_handle_irq+0x130/0x160
    sp=e0000039ee2bfbc0 bsp=e0000039ee2b91a0
    [<a00000010000b1a0>] ia64_leave_kernel+0x0/0x290
    sp=e0000039ee2bfbc0 bsp=e0000039ee2b91a0
    [<a000000100407600>] __copy_user+0x20/0x960
    sp=e0000039ee2bfd90 bsp=e0000039ee2b9178
    [<a000000100010e20>] default_idle+0xc0/0x160
    sp=e0000039ee2bfd90 bsp=e0000039ee2b9158
    [<a000000100011d90>] cpu_idle+0x1d0/0x2c0
    sp=e0000039ee2bfe30 bsp=e0000039ee2b9128
    [<a000000100051b70>] start_secondary+0x350/0x380
    sp=e0000039ee2bfe30 bsp=e0000039ee2b90e0
    [<a000000100008650>] __end_ivt_text+0x330/0x360
    sp=e0000039ee2bfe30 bsp=e0000039ee2b90e0
    <0>Kernel panic - not syncing: Aiee, killing interrupt handler!

    Cheers,

    Dave.
    --
    Dave Chinner
    Principal Engineer
    SGI Australian Software Group
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