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    Subject2.6.27-rc1: WARNING: at /home/rafael/src/linux-next/include/linux/blkdev.h:447
    Date
    On Thursday, 17 of July 2008, Rafael J. Wysocki wrote:
    > On Saturday, 12 of July 2008, Rafael J. Wysocki wrote:
    > > On Saturday, 12 of July 2008, Vegard Nossum wrote:
    > > > On Sat, Jul 12, 2008 at 8:51 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
    > > > > and the second one is the following:
    > [--snip--]
    > >
    > > It turns out that this happened before, but I've been overlooking it. This is
    > > a trace from the Friday's linux-next:
    > >
    > > ------------[ cut here ]------------
    > > WARNING: at /home/rafael/src/linux-next/include/linux/blkdev.h:447 blk_plug_device+0x9b/0xb0()
    > > Modules linked in: rtc_cmos snd_hda_intel rtc_core snd_pcm sr_mod floppy snd_timer snd_page_alloc rtc_lib ohci1394 serio_raw cdrom ieee1394 snd_hwdep snd soundcore sky2 button wmi joydev evdev sg raid456 async_xor async_memcpy async_tx xor raid0 usbhid ff_memless ehci_hcd sd_mod ohci_hcd edd raid1 ext3 jbd fan pata_marvell pata_atiixp thermal processor
    > > Pid: 2275, comm: kjournald Not tainted 2.6.26-rc9-next #40
    > >
    > > Call Trace:
    > > [<ffffffff8023cf9f>] warn_on_slowpath+0x5f/0x80
    > > [<ffffffff80220030>] ? hpet_rtc_interrupt+0x100/0x380
    > > [<ffffffff80263327>] ? __lock_acquire+0x8b7/0x1280
    > > [<ffffffff80291461>] ? mempool_alloc_slab+0x11/0x20
    > > [<ffffffff8035735b>] blk_plug_device+0x9b/0xb0
    > > [<ffffffff8045377f>] bitmap_startwrite+0xbf/0x1b0
    > > [<ffffffff802e8254>] ? bio_alloc_bioset+0x54/0xb0
    > > [<ffffffffa004eafa>] make_request+0x39a/0x810 [raid1]
    > > [<ffffffff802915cb>] ? mempool_alloc+0x5b/0x140
    > > [<ffffffff802915cb>] ? mempool_alloc+0x5b/0x140
    > > [<ffffffff803565ad>] generic_make_request+0x17d/0x2b0
    > > [<ffffffff80357f5c>] submit_bio+0x6c/0xf0
    > > [<ffffffff802e36d0>] submit_bh+0xf0/0x130
    > > [<ffffffffa001cce0>] journal_commit_transaction+0xa40/0x1000 [jbd]
    > > [<ffffffff802480d4>] ? try_to_del_timer_sync+0x44/0x90
    > > [<ffffffffa0020967>] kjournald+0xe7/0x250 [jbd]
    > > [<ffffffff80253ef0>] ? autoremove_wake_function+0x0/0x40
    > > [<ffffffffa0020880>] ? kjournald+0x0/0x250 [jbd]
    > > [<ffffffff80253a9d>] kthread+0x4d/0x80
    > > [<ffffffff8020c6b9>] child_rip+0xa/0x11
    > > [<ffffffff8020bcef>] ? restore_args+0x0/0x30
    > > [<ffffffff80253a50>] ? kthread+0x0/0x80
    > > [<ffffffff8020c6af>] ? child_rip+0x0/0x11
    > >
    > > ---[ end trace bd85cedf792d0f08 ]---
    > >
    >
    > This has now made it into the Linus' tree:
    >
    > ------------[ cut here ]------------
    > WARNING: at /home/rafael/src/linux-2.6/include/linux/blkdev.h:447 blk_plug_device+0x9b/0xb0()
    > Modules linked in: rtc_cmos rtc_core sr_mod rtc_lib snd_hda_intel cdrom floppy snd_pcm snd_timer serio_raw snd_page_alloc ohci1394 snd_hwdep ieee1394 sky2 snd soundcore joydev button wmi evdev sg 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: 2264, comm: kjournald Not tainted 2.6.26-git #203
    >
    > Call Trace:
    > [<ffffffff8023aadf>] warn_on_slowpath+0x5f/0x80
    > [<ffffffff80261075>] ? __lock_acquire+0x8d5/0x1290
    > [<ffffffff8028991b>] ? mempool_alloc+0x5b/0x140
    > [<ffffffff8034e43b>] blk_plug_device+0x9b/0xb0
    > [<ffffffff8044727f>] bitmap_startwrite+0xbf/0x1b0
    > [<ffffffff802dff44>] ? bio_alloc_bioset+0x54/0xb0
    > [<ffffffffa004ea9c>] make_request+0x39c/0x810 [raid1]
    > [<ffffffff8028991b>] ? mempool_alloc+0x5b/0x140
    > [<ffffffff8028991b>] ? mempool_alloc+0x5b/0x140
    > [<ffffffff8034d68d>] generic_make_request+0x17d/0x2b0
    > [<ffffffff8034f03c>] submit_bio+0x6c/0xf0
    > [<ffffffff802db3c0>] submit_bh+0xf0/0x130
    > [<ffffffffa001cce0>] journal_commit_transaction+0xa40/0x1000 [jbd]
    > [<ffffffff80245c74>] ? try_to_del_timer_sync+0x44/0x90
    > [<ffffffffa0020947>] kjournald+0xe7/0x250 [jbd]
    > [<ffffffff80251a60>] ? autoremove_wake_function+0x0/0x40
    > [<ffffffffa0020860>] ? kjournald+0x0/0x250 [jbd]
    > [<ffffffff8025160d>] kthread+0x4d/0x80
    > [<ffffffff8020c6c9>] child_rip+0xa/0x11
    > [<ffffffff8020bcff>] ? restore_args+0x0/0x30
    > [<ffffffff802515c0>] ? kthread+0x0/0x80
    > [<ffffffff8020c6bf>] ? child_rip+0x0/0x11
    >
    > ---[ end trace a367ac91f145af0b ]---

    This also happens in 2.6.27-rc1:

    ------------[ cut here ]------------
    WARNING: at /home/rafael/src/linux-2.6/include/linux/blkdev.h:447 blk_plug_device+0x9b/0xb0()
    Modules linked in: snd_hda_intel snd_pcm rtc_cmos rtc_core sr_mod snd_timer floppy rtc_lib snd_page_alloc ohci1394 snd_hwdep snd cdrom ieee1394 serio_raw soundcore sky2 wmi button joydev evdev sg raid456 async_xor async_memcpy async_tx xor raid0 usbhid ff_memless ehci_hcd ohci_hcd sd_mod crc_t10dif edd raid1 ext3 jbd fan pata_marvell pata_atiixp thermal processor
    Pid: 2268, comm: kjournald Not tainted 2.6.27-rc1-git #211

    Call Trace:
    [<ffffffff8023af5f>] warn_on_slowpath+0x5f/0x80
    [<ffffffff802af8e3>] ? cache_alloc_debugcheck_after+0xc3/0x1f0
    [<ffffffff80260d75>] ? __lock_acquire+0x865/0xef0
    [<ffffffff8034fc7b>] blk_plug_device+0x9b/0xb0
    [<ffffffff8044d5bf>] bitmap_startwrite+0xbf/0x1b0
    [<ffffffff802dfd84>] ? bio_alloc_bioset+0x54/0xb0
    [<ffffffffa004f8ed>] make_request+0x39d/0x810 [raid1]
    [<ffffffff8028979b>] ? mempool_alloc+0x5b/0x140
    [<ffffffff8028979b>] ? mempool_alloc+0x5b/0x140
    [<ffffffff8034ecce>] generic_make_request+0x17e/0x2b0
    [<ffffffff8034ee6c>] submit_bio+0x6c/0xf0
    [<ffffffff802dbeb0>] submit_bh+0xf0/0x130
    [<ffffffffa001de35>] journal_commit_transaction+0xa75/0x1040 [jbd]
    [<ffffffff802456d4>] ? try_to_del_timer_sync+0x44/0x90
    [<ffffffffa0021167>] kjournald+0xe7/0x250 [jbd]
    [<ffffffff80251740>] ? autoremove_wake_function+0x0/0x40
    [<ffffffffa0021080>] ? kjournald+0x0/0x250 [jbd]
    [<ffffffff8025125d>] kthread+0x4d/0x80
    [<ffffffff8020c6d9>] child_rip+0xa/0x11
    [<ffffffff8020bd0f>] ? restore_args+0x0/0x30
    [<ffffffff80251210>] ? kthread+0x0/0x80
    [<ffffffff8020c6cf>] ? child_rip+0x0/0x11

    ---[ end trace e8b3210386e976bd ]---

    dmesg: http://www.sisk.pl/kernel/debug/mainline/2.6.27-rc1/dmesg-M3A32-MVP.log
    config: http://www.sisk.pl/kernel/debug/mainline/2.6.27-rc1/config-M3A32-MVP

    Thanks,
    Rafael


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