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    Subjectlockdep wierdness - was Re: 2.6.17-rc6-mm1
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    On Wed, 07 Jun 2006 23:19:57 EDT, Valdis.Kletnieks@vt.edu said:
    > > http://redhat.com/~mingo/lockdep-patches/lockdep-combo-2.6.17-rc6-mm1.patch
    >
    > Seems to be making progress. With this lockdep-combo, I've been up for
    > 40 minutes without a peep.

    Looks like I spoke too soon. Caught this while the system was coming
    down for a reboot (fortunately syslogd was still running):

    [10155.405000] stopped custom tracer.
    [10155.405000] BUG: warning at kernel/lockdep.c:2431/check_flags()
    [10155.405000] [<c010316f>] show_trace_log_lvl+0x54/0xfd
    [10155.405000] [<c01036e0>] show_trace+0xd/0x10
    [10155.405000] [<c010377d>] dump_stack+0x19/0x1b
    [10155.405000] [<c0129a70>] check_flags+0x98/0x1f1
    [10155.405000] [<c012c3a4>] lock_release+0x1e/0x369
    [10155.405000] [<c036ddbf>] _spin_unlock_bh+0x16/0x32
    [10155.405000] [<c0324f2e>] igmpv3_clear_delrec+0x9e/0xc6
    [10155.405000] [<c03268ca>] ip_mc_down+0x8e/0xa1
    [10155.405000] [<c032253b>] inetdev_event+0x137/0x289
    [10155.405000] [<c036fb17>] notifier_call_chain+0x20/0x31
    [10155.405000] [<c0120547>] raw_notifier_call_chain+0x8/0xa
    [10155.405000] [<c02ed984>] dev_close+0x5f/0x64
    [10155.405000] [<c02ed187>] dev_change_flags+0x51/0xf1
    [10155.405000] [<c0322c47>] devinet_ioctl+0x23a/0x557
    [10155.405000] [<c03235d6>] inet_ioctl+0x73/0x91
    [10155.405000] [<c02e475d>] sock_ioctl+0x1a7/0x1cc
    [10155.405000] [<c016d642>] do_ioctl+0x22/0x67
    [10155.405000] [<c016d8db>] vfs_ioctl+0x254/0x267
    [10155.405000] [<c016d935>] sys_ioctl+0x47/0x72
    [10155.405000] [<c036e5c3>] syscall_call+0x7/0xb
    [10155.405000] irq event stamp: 3577
    [10155.405000] hardirqs last enabled at (3575): [<c0118ebc>] local_bh_enable_ip+0xd7/0x104
    [10155.405000] hardirqs last disabled at (3577): [<c036e485>] ret_from_exception+0x9/0xc
    [10155.405000] softirqs last enabled at (3574): [<c0324ebc>] igmpv3_clear_delrec+0x2c/0xc6
    [10155.405000] softirqs last disabled at (3576): [<c036db93>] _spin_lock_bh+0xb/0x37

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