linux-kernel - Re: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC

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Message-Id: <20071126123319.7483e57f.akpm@linux-foundation.org>
Date:	Mon, 26 Nov 2007 12:33:19 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	kamalesh@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	apw@...dowen.org, balbir@...ux.vnet.ibm.com,
	linux-acpi@...r.kernel.org, tglx@...utronix.de, mingo@...e.hu,
	Christoph Lameter <clameter@....com>
Subject: Re: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC

On Mon, 26 Nov 2007 14:39:43 -0500
Rik van Riel <riel@...hat.com> wrote:

> On Tue, 20 Nov 2007 22:18:39 -0800
> Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
> > > ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> > > Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter
> > 
> > ACPI or x86 breakage, I guess.
> > 
> > Did 'noapic' work?
> 
> I got the same bug as above, 'noapic' gets past that point 

We still don't know what caused this, afaik.

> and right to the
> next oops.  I'm posting it here because this one is different from the others
> in the thread, yet looks vaguely related:
> 
> Unable to handle kernel NULL pointer dereference at 0000000000000021 RIP:
>  [<ffffffff8108382a>] refresh_zone_stat_thresholds+0x6d/0x90
> PGD 0
> Oops: 0002 [1] SMP
> last sysfs file:
> CPU 0
> Modules linked in:
> Pid: 1, comm: swapper Not tainted 2.6.24-rc3-mm1 #2
> RIP: 0010:[<ffffffff8108382a>]  [<ffffffff8108382a>] refresh_zone_stat_thresholds+0x6d/0x90
> RSP: 0000:ffff81007fb59ec0  EFLAGS: 00010293
> RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000000001
> RDX: 0000000000000001 RSI: ffffffff8146fb38 RDI: 0000000000000001
> RBP: ffff81000000c000 R08: 0000000000000000 R09: 0000000000000000
> R10: ffff81007fb59e60 R11: 0000000000000028 R12: ffffffff814d4558
> R13: 0000000000000000 R14: ffffffff814b62c0 R15: 0000000000000000
> FS:  0000000000000000(0000) GS:ffffffff813d9000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> CR2: 0000000000000021 CR3: 0000000000201000 CR4: 00000000000006a0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process swapper (pid: 1, threadinfo FFFF81007FB58000, task FFFF81007FB56000)
> Stack:  0000000000000000 0000000000000000 0000000000000000 ffffffff814a3839
>  0000000000000000 ffffffff8148e626 ffff81007fb56000 ffffffff8126d36a
>  0000000000000000 ffffffffffffffff ffffffff8105786b 0000000000000000
> Call Trace:
>  [<ffffffff814a3839>] setup_vmstat+0x6/0x40
>  [<ffffffff8148e626>] kernel_init+0x169/0x2d8
>  [<ffffffff8126d36a>] trace_hardirqs_on_thunk+0x35/0x3a
>  [<ffffffff8105786b>] trace_hardirqs_on+0x115/0x138
>  [<ffffffff8100ce48>] child_rip+0xa/0x12
>  [<ffffffff8100c55f>] restore_args+0x0/0x30
>  [<ffffffff8148e4bd>] kernel_init+0x0/0x2d8
>  [<ffffffff8100ce3e>] child_rip+0x0/0x12
> 
> INFO: lockdep is turned off.

hm.  This smells like a startup ordering problem, but everything which
refresh_zone_stat_thresholds() should be set up by the time we run
initcalls.  Maybe the zone lists are bad?

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