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    SubjectRe: linux-next: Tree for July 11
    On Friday, 11 of July 2008, Stephen Rothwell wrote:
    > Hi all,
    > Changes since next-20080710:
    > New tree: voltage
    > The tip-core tree lost its conflict against Linus' tree.
    > The sched tree gained a conflict against Linus' tree.
    > The x86 tree gained conflicts against the ftrace and driver-core trees.
    > The ide tree lost its 2 conflicts against Linus' tree.
    > The rr tree gained a runtime bug fix patch (which Rusty tells me will not
    > be needed for long).
    > The firmware tree gained a conflict against the usb tree that required the
    > reverting of one of its commits) but also lost a conflict against Linus'
    > tree.
    > The kmemcheck tree gained a conflict against the x86 tree.
    > The ttydev tree had two patches fail to apply which I removed.
    > I have also applied the following patches for known problems:
    > sparc64: sysdev API change fallout
    > s390: fix compile error due to smp_call_function
    > This patch is no longer needed:
    > linux-next: zero based percpu build error on s390
    > ----------------------------------------------------------------------------

    With this tree I see two problems. The first one is this:

    [ INFO: possible recursive locking detected ]
    2.6.26-rc9-next #44
    swapper/1 is trying to acquire lock:
    (&queue->lock){-...}, at: [<ffffffff80483067>] qdisc_lock_tree+0x27/0x30

    but task is already holding lock:
    (&queue->lock){-...}, at: [<ffffffff8048305f>] qdisc_lock_tree+0x1f/0x30

    other info that might help us debug this:
    3 locks held by swapper/1:
    #0: (net_mutex){--..}, at: [<ffffffff8046e482>] register_pernet_device+0x22/0x70
    #1: (rtnl_mutex){--..}, at: [<ffffffff8047bac2>] rtnl_lock+0x12/0x20
    #2: (&queue->lock){-...}, at: [<ffffffff8048305f>] qdisc_lock_tree+0x1f/0x30

    stack backtrace:
    Pid: 1, comm: swapper Not tainted 2.6.26-rc9-next #44

    Call Trace:
    [<ffffffff80263a4e>] __lock_acquire+0xb7e/0x1280
    [<ffffffff802641a7>] lock_acquire+0x57/0x80
    [<ffffffff80483067>] ? qdisc_lock_tree+0x27/0x30
    [<ffffffff80500c65>] _spin_lock+0x25/0x40
    [<ffffffff80483067>] qdisc_lock_tree+0x27/0x30
    [<ffffffff804830b1>] dev_init_scheduler+0x11/0x70
    [<ffffffff8047193b>] register_netdevice+0x1fb/0x370
    [<ffffffff80471af4>] register_netdev+0x44/0x60
    [<ffffffff806f18f7>] loopback_net_init+0x47/0x90
    [<ffffffff806f12c0>] ? firmware_class_init+0x0/0x90
    [<ffffffff806f1890>] ? loopback_init+0x0/0x20
    [<ffffffff8046e3e8>] register_pernet_operations+0x18/0x20
    [<ffffffff8046e491>] register_pernet_device+0x31/0x70
    [<ffffffff806f18a0>] loopback_init+0x10/0x20
    [<ffffffff806caa48>] kernel_init+0x128/0x310
    [<ffffffff8026297f>] ? trace_hardirqs_on_caller+0xbf/0x150
    [<ffffffff80262a1d>] ? trace_hardirqs_on+0xd/0x10
    [<ffffffff80500f9b>] ? _spin_unlock_irq+0x2b/0x40
    [<ffffffff80500830>] ? trace_hardirqs_on_thunk+0x3a/0x3f
    [<ffffffff8026297f>] ? trace_hardirqs_on_caller+0xbf/0x150
    [<ffffffff8020c6d9>] child_rip+0xa/0x11
    [<ffffffff8020bd0f>] ? restore_args+0x0/0x30
    [<ffffffff806ca920>] ? kernel_init+0x0/0x310
    [<ffffffff8020c6cf>] ? child_rip+0x0/0x11

    and the second one is the following:

    WARNING: at /home/rafael/src/linux-next/include/linux/blkdev.h:447 blk_plug_device+0x9b/0xb0()
    Modules linked in: snd_hda_intel ohci1394 ieee1394 snd_pcm rtc_cmos sr_mod rtc_core floppy snd_timer wmi button cdrom rtc_lib serio_raw sky2 snd_page_alloc snd_hwdep snd evdev joydev sg soundcore raid456 async_xor async_memcpy async_tx xor raid0 usbhid ff_memless ehci_hcd ohci_hcd sd_mod edd raid1 ext3 jbd fan pata_marvell pata_atiixp thermal processor
    Pid: 2244, comm: kjournald Not tainted 2.6.26-rc9-next #44

    Call Trace:
    [<ffffffff8023d37f>] warn_on_slowpath+0x5f/0x80
    [<ffffffff80220030>] ? hpet_unregister_irq_handler+0x0/0x30
    [<ffffffff8022a8ae>] ? kmemcheck_mark_initialized+0xe/0x10
    [<ffffffff802b97fb>] ? kmemcheck_slab_alloc+0x2b/0x50
    [<ffffffff802b8610>] ? kmem_cache_alloc+0xc0/0x140
    [<ffffffff80291921>] ? mempool_alloc_slab+0x11/0x20
    [<ffffffff80291a8b>] ? mempool_alloc+0x5b/0x140
    [<ffffffff803575db>] blk_plug_device+0x9b/0xb0
    [<ffffffff80453d9f>] bitmap_startwrite+0xbf/0x1b0
    [<ffffffff802e87e4>] ? bio_alloc_bioset+0x54/0xb0
    [<ffffffffa004eafa>] make_request+0x39a/0x810 [raid1]
    [<ffffffff80291a8b>] ? mempool_alloc+0x5b/0x140
    [<ffffffff80291a8b>] ? mempool_alloc+0x5b/0x140
    [<ffffffff8035682d>] generic_make_request+0x17d/0x2b0
    [<ffffffff803581dc>] submit_bio+0x6c/0xf0
    [<ffffffff802e3c60>] submit_bh+0xf0/0x130
    [<ffffffffa001cce0>] journal_commit_transaction+0xa40/0x1000 [jbd]
    [<ffffffff80248504>] ? try_to_del_timer_sync+0x44/0x90
    [<ffffffffa0020967>] kjournald+0xe7/0x250 [jbd]
    [<ffffffff80254350>] ? autoremove_wake_function+0x0/0x40
    [<ffffffffa0020880>] ? kjournald+0x0/0x250 [jbd]
    [<ffffffff80253efd>] kthread+0x4d/0x80
    [<ffffffff8020c6d9>] child_rip+0xa/0x11
    [<ffffffff80500f9b>] ? _spin_unlock_irq+0x2b/0x40
    [<ffffffff8020bd0f>] ? restore_args+0x0/0x30
    [<ffffffff80254052>] ? kthreadd+0x122/0x1a0
    [<ffffffff80253eb0>] ? kthread+0x0/0x80
    [<ffffffff8020c6cf>] ? child_rip+0x0/0x11

    ---[ end trace d63b767d1ed7d78a ]---

    Full dmesg output is at:


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