[Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527 - Kernel

This is a discussion on [Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527 - Kernel ; [Sorry, I had a wrong address of Dmitry, resending.] Hi, The Linus' tree from today on Asus L5D: BUG: spinlock bad magic on CPU#0, setserial/3527 lock: ffffffff80dae020, .magic: 00000000, .owner: /-1, .owner_cpu: 0 Pid: 3527, comm: setserial Not tainted 2.6.27-git ...

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Thread: [Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527

  1. [Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527

    [Sorry, I had a wrong address of Dmitry, resending.]

    Hi,

    The Linus' tree from today on Asus L5D:

    BUG: spinlock bad magic on CPU#0, setserial/3527
    lock: ffffffff80dae020, .magic: 00000000, .owner: /-1, .owner_cpu: 0
    Pid: 3527, comm: setserial Not tainted 2.6.27-git #57
    Call Trace:
    [] spin_bug+0xde/0xf0
    [] _raw_spin_lock+0x86/0x140
    [] _spin_lock_irq+0x3a/0x50
    [] ? serial8250_startup+0x13d/0x610
    [] serial8250_startup+0x13d/0x610
    [] uart_startup+0x6a/0x1a0
    [] uart_open+0x115/0x4a0
    [] ? _spin_unlock+0x26/0x30
    [] ? check_tty_count+0x21/0xc0
    [] tty_open+0x1ea/0x440
    [] chrdev_open+0xa0/0x1c0
    [] __dentry_open+0xcc/0x2c0
    [] ? chrdev_open+0x0/0x1c0
    [] nameidata_to_filp+0x44/0x60
    [] do_filp_open+0x1fd/0x8f0
    [] ? getname+0x36/0x210
    [] ? alloc_fd+0x106/0x130
    [] do_sys_open+0x5e/0xf0
    [] sys_open+0x1b/0x20
    [] system_call_fastpath+0x16/0x1b

    Do I have to bisect? :-)

    Rafael
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  2. Re: [Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527

    On Mon, 13 Oct 2008 16:10:14 -0700 (PDT)
    Linus Torvalds wrote:

    >
    > If this started today, then the most likely culprit is Alan's series of 80
    > serial patches.
    >
    > Alan? I can only assume it's one of the
    >
    > spin_lock_irq(&up->port.lock);
    >
    > in serial8250_startup() (or quite likely in one of the functions it calls
    > that get inlined by the compiler, like enable_rsa()).
    >
    > And it sounds like it didn't get initialized.


    Yeah I know whats going on I think. When I dropped out the NR_IRQ changes
    I didn't drop back in the spin lock init. Will sort it tomorrow (actually
    'later today' as its midnight here)

    Alan
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  3. Re: [Resend][2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527


    If this started today, then the most likely culprit is Alan's series of 80
    serial patches.

    Alan? I can only assume it's one of the

    spin_lock_irq(&up->port.lock);

    in serial8250_startup() (or quite likely in one of the functions it calls
    that get inlined by the compiler, like enable_rsa()).

    And it sounds like it didn't get initialized.

    Linus

    On Tue, 14 Oct 2008, Rafael J. Wysocki wrote:
    >
    > [Sorry, I had a wrong address of Dmitry, resending.]
    >
    > Hi,
    >
    > The Linus' tree from today on Asus L5D:
    >
    > BUG: spinlock bad magic on CPU#0, setserial/3527
    > lock: ffffffff80dae020, .magic: 00000000, .owner: /-1, .owner_cpu: 0
    > Pid: 3527, comm: setserial Not tainted 2.6.27-git #57
    > Call Trace:
    > [] spin_bug+0xde/0xf0
    > [] _raw_spin_lock+0x86/0x140
    > [] _spin_lock_irq+0x3a/0x50
    > [] ? serial8250_startup+0x13d/0x610
    > [] serial8250_startup+0x13d/0x610
    > [] uart_startup+0x6a/0x1a0
    > [] uart_open+0x115/0x4a0
    > [] ? _spin_unlock+0x26/0x30
    > [] ? check_tty_count+0x21/0xc0
    > [] tty_open+0x1ea/0x440
    > [] chrdev_open+0xa0/0x1c0
    > [] __dentry_open+0xcc/0x2c0
    > [] ? chrdev_open+0x0/0x1c0
    > [] nameidata_to_filp+0x44/0x60
    > [] do_filp_open+0x1fd/0x8f0
    > [] ? getname+0x36/0x210
    > [] ? alloc_fd+0x106/0x130
    > [] do_sys_open+0x5e/0xf0
    > [] sys_open+0x1b/0x20
    > [] system_call_fastpath+0x16/0x1b
    >
    > Do I have to bisect? :-)
    >
    > Rafael
    >

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