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    Subject[BUG] 2.6.24-rc2-mm1 - kernel bug on nfs v4
    Hi Andrew,

    The kernel enters the xmon state while running the file system
    stress on nfs v4 mounted partition.

    0:mon> e
    cpu 0x0: Vector: 300 (Data Access) at [c0000000dbd4f820]
    pc: c000000000065be4: .__wake_up_common+0x44/0xe8
    lr: c000000000069768: .__wake_up+0x54/0x88
    sp: c0000000dbd4faa0
    msr: 8000000000001032
    dar: 0
    dsisr: 40010000
    current = 0xc0000000dfb6f680
    paca = 0xc000000000574580
    pid = 1865, comm = rpciod/0
    0:mon> t
    [c0000000dbd4fb50] c000000000069768 .__wake_up+0x54/0x88
    [c0000000dbd4fc00] d00000000086b890 .nfs_sb_deactive+0x44/0x58 [nfs]
    [c0000000dbd4fc80] d000000000872658 .nfs_free_unlinkdata+0x2c/0x74 [nfs]
    [c0000000dbd4fd10] d000000000598510 .rpc_release_calldata+0x50/0x74 [sunrpc]
    [c0000000dbd4fda0] c00000000008d960 .run_workqueue+0x10c/0x1f4
    [c0000000dbd4fe50] c00000000008ec70 .worker_thread+0x118/0x138
    [c0000000dbd4ff00] c0000000000939f4 .kthread+0x78/0xc4
    [c0000000dbd4ff90] c00000000002b060 .kernel_thread+0x4c/0x68
    0:mon> r
    R00 = c000000000069768 R16 = 4000000001c00000
    R01 = c0000000dbd4faa0 R17 = c0000000004410c0
    R02 = c0000000006752d8 R18 = 0000000000000000
    R03 = c0000000ace4ffc0 R19 = 000000000019c000
    R04 = 0000000000000003 R20 = c00000000050af08
    R05 = 0000000000000001 R21 = 000000000210af08
    R06 = 0000000000000000 R22 = 000000000210b178
    R07 = 0000000000000000 R23 = c00000000050b178
    R08 = 0000000000000000 R24 = 0000000000000003
    R09 = 0000000000000000 R25 = 0000000000000000
    R10 = 0000000000000001 R26 = 0000000000000000
    R11 = ffffffffffffffe8 R27 = c0000000ace4ffc0
    R12 = 0000000000004000 R28 = 0000000000000001
    R13 = c000000000574580 R29 = 0000000000000003
    R14 = 0000000000000000 R30 = c00000000061bad8
    R15 = c000000000442888 R31 = d0000000008baa50
    pc = c000000000065be4 .__wake_up_common+0x44/0xe8
    lr = c000000000069768 .__wake_up+0x54/0x88
    msr = 8000000000001032 cr = 24000022
    ctr = 80000000001af404 xer = 0000000000000002 trap = 300
    dar = 0000000000000000 dsisr = 40010000
    0:mon>

    --
    Thanks & Regards,
    Kamalesh Babulal,
    Linux Technology Center,
    IBM, ISTL.
    -
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