linux-kernel - Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

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Message-ID: <91946.43854.qm@web52909.mail.re2.yahoo.com>
Date:	Wed, 27 Feb 2008 00:55:38 +0000 (GMT)
From:	Chris Rankin <rankincj@...oo.com>
To:	Greg KH <greg@...ah.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Linux 2.6.24.1  - kernel does not boot; IRQ trouble?

--- Greg KH <greg@...ah.com> wrote:
> On Tue, Feb 26, 2008 at 10:36:00PM +0000, Chris Rankin wrote:
> > FYI, this hang still exists in 2.6.24.3 and so I am still needing to boot with the acpi=noirq
> > parameter.
> 
> You're going to have to refresh my memory.  Was this a problem caused by
> the .1 .2 or .3 kernel releases?  Did 2.6.24 have this problem as well,
> or was it ok?

It's a bug introduced in 2.6.24; that ACPI fails to allocate IRQs correctly for PCI devices, which
makes the kernel hang at boot-time:

PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
BUG: NMI Watchdog detected LOCKUP on CPU0, eip c0102b07, registers:
Modules linked in:

Pid: 0, comm: swapper Not tainted (2.6.24.1 #1)
EIP: 0060:[<c0102b07>] EFLAGS: 00000246 CPU: 0
EIP is at default_idle+0x2f/0x43
EAX: 00000000 EBX: c0102ad8 ECX: 010b2000 EDX: fffedb3c
ESI: 00000000 EDI: c1409284 EBP: c0323fb4 ESP: c0323fb4
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process swapper (pid: 0, ti=c0323000 task=c02fc320 task.ti=c0323000)
Stack: c0323fc4 c01025af c140c000 c0357284 c0323fcc c02873a9 c0323ff8 c032792f 
       00000037 c0327108 00000000 00000004 00009000 c0343b00 00000002 00099800 
       c0319000 007ab007 00000000 
Call Trace:
 [<c0105020>] show_trace_log_lvl+0x1a/0x2f
 [<c01050d2>] show_stack_log_lvl+0x9d/0xa5
 [<c010517d>] show_registers+0xa3/0x1df
 [<c0105ba7>] die_nmi+0x81/0xd2
 [<c0115d72>] nmi_watchdog_tick+0xd5/0x12a
 [<c0105f19>] do_nmi+0x93/0x24b
 [<c0289b83>] nmi_stack_correct+0x26/0x2b
 [<c01025af>] cpu_idle+0x9a/0xcf
 [<c02873a9>] rest_init+0x5d/0x5f
 [<c032792f>] start_kernel+0x2e2/0x2ea
 [<00000000>] _stext+0x3feff000/0x19
 =======================
Code: 36 c0 00 55 89 e5 75 33 80 3d e5 17 32 c0 00 74 2a 89 e0 25 00 f0 ff ff 83 60 0c fd f0 83 04
24 00 fa 8b 40 08 a8 04 75 04 fb f4 <eb> 01 fb 89 e0 25 00 f0 ff ff 83 48 0c 02 eb 02 f3 90 5d c3
55 

(This trace is from 2.6.24.1, but it hasn't changed in 2.6.24.3.) I currently avoid this problem
by booting with acpi=noirq, which puts all the PCI devices on IRQ 9 instead of sharing them
between IRQs 16, 17, 18 and 19.

Cheers,
Chris



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