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    Subject[BUG?] possible recursive locking detected (blkdev_open)
    Date
    =============================================
    [ INFO: possible recursive locking detected ]
    ---------------------------------------------
    parted/7929 is trying to acquire lock:
    (&bdev->bd_mutex){--..}, at: [<c105eb8d>] __blkdev_put+0x1e/0x13c

    but task is already holding lock:
    (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8

    other info that might help us debug this:
    1 lock held by parted/7929:
    #0: (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8
    stack backtrace:
    [<c1003aad>] show_trace_log_lvl+0x58/0x15b
    [<c100495f>] show_trace+0xd/0x10
    [<c1004979>] dump_stack+0x17/0x1a
    [<c102dee5>] __lock_acquire+0x753/0x99c
    [<c102e3b0>] lock_acquire+0x4a/0x6a
    [<c1204501>] mutex_lock_nested+0xc8/0x20c
    [<c105eb8d>] __blkdev_put+0x1e/0x13c
    [<c105ecc4>] blkdev_put+0xa/0xc
    [<c105f18a>] do_open+0x336/0x3a8
    [<c105f21b>] blkdev_open+0x1f/0x4c
    [<c1057b40>] __dentry_open+0xc7/0x1aa
    [<c1057c91>] nameidata_to_filp+0x1c/0x2e
    [<c1057cd1>] do_filp_open+0x2e/0x35
    [<c1057dd7>] do_sys_open+0x38/0x68
    [<c1057e33>] sys_open+0x16/0x18
    [<c1002845>] sysenter_past_esp+0x56/0x8d
    DWARF2 unwinder stuck at sysenter_past_esp+0x56/0x8d
    Leftover inexact backtrace:
    [<c100495f>] show_trace+0xd/0x10
    [<c1004979>] dump_stack+0x17/0x1a
    [<c102dee5>] __lock_acquire+0x753/0x99c
    [<c102e3b0>] lock_acquire+0x4a/0x6a
    [<c1204501>] mutex_lock_nested+0xc8/0x20c
    [<c105eb8d>] __blkdev_put+0x1e/0x13c
    [<c105ecc4>] blkdev_put+0xa/0xc
    [<c105f18a>] do_open+0x336/0x3a8
    [<c105f21b>] blkdev_open+0x1f/0x4c
    [<c1057b40>] __dentry_open+0xc7/0x1aa
    [<c1057c91>] nameidata_to_filp+0x1c/0x2e
    [<c1057cd1>] do_filp_open+0x2e/0x35
    [<c1057dd7>] do_sys_open+0x38/0x68
    [<c1057e33>] sys_open+0x16/0x18
    [<c1002845>] sysenter_past_esp+0x56/0x8d
    [unhandled content-type:application/pgp-signature]
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      Last update: 2006-08-09 07:57    [W:0.022 / U:58.960 seconds]
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