linux-kernel - Re: 2.6.25-git WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic

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Message-ID: <4817C81D.20503@googlemail.com>
Date:	Wed, 30 Apr 2008 03:15:09 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Kevin Winchester <kjwinchester@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 2.6.25-git WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x2e/0x46()

Kevin Winchester wrote:
> Hi Ingo,
> 
> I am getting the following in my dmesg on every boot.  It was reported before[1], so I figured someone was working on it.  However, I haven't seen it get fixed yet, so is there anything I can do to help?

There is a patch already for this issue. I think is not yet pushed to Linus.

http://lkml.org/lkml/2008/4/25/107

> 
> 
> [    0.071066] ------------[ cut here ]------------
> [    0.071098] WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x2e/0x46()
> [    0.071140] Pid: 1, comm: swapper Not tainted 2.6.25-06589-gc65a350 #18
> [    0.071169]
> [    0.071170] Call Trace:
> [    0.071216]  [<ffffffff8022bc88>] warn_on_slowpath+0x53/0x81
> [    0.071247]  [<ffffffff80246e8c>] ? save_trace+0x3f/0x95
> [    0.071996]  [<ffffffff80248610>] ? mark_lock+0x345/0x36d
> [    0.072025]  [<ffffffff80249384>] ? __lock_acquire+0x898/0x8b9
> [    0.072055]  [<ffffffff80241ab9>] ? atomic_notifier_chain_register+0x18/0x41
> [    0.072087]  [<ffffffff80241ad6>] ? atomic_notifier_chain_register+0x35/0x41
> [    0.072118]  [<ffffffff8021be64>] read_apic_id+0x2e/0x46
> [    0.072147]  [<ffffffff80611042>] verify_local_APIC+0xaa/0x16a
> [    0.072177]  [<ffffffff8061143a>] APIC_init_uniprocessor+0x54/0xf6
> [    0.072208]  [<ffffffff806161ed>] ? spawn_softlockup_task+0x56/0x5a
> [    0.072237]  [<ffffffff8060b7f4>] kernel_init+0x4c/0x1d6
> [    0.072267]  [<ffffffff804a70ea>] ? _spin_unlock_irq+0x50/0x5d
> [    0.072296]  [<ffffffff804a6697>] ? trace_hardirqs_on_thunk+0x35/0x3a
> [    0.072326]  [<ffffffff80248838>] ? trace_hardirqs_on+0xf8/0x122
> [    0.072357]  [<ffffffff8020bf28>] child_rip+0xa/0x12
> [    0.072385]  [<ffffffff8020bae3>] ? restore_args+0x0/0x30
> [    0.072414]  [<ffffffff8060b7a8>] ? kernel_init+0x0/0x1d6
> [    0.072442]  [<ffffffff8020bf1e>] ? child_rip+0x0/0x12
> [    0.072468]
> [    0.072521] ---[ end trace 4eaa2a86a8e2da22 ]---
> [    0.072549] ------------[ cut here ]------------
> [    0.072575] WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x2e/0x46()
> [    0.072616] Pid: 1, comm: swapper Tainted: G        W 2.6.25-06589-gc65a350 #18
> [    0.072655]
> [    0.072656] Call Trace:
> [    0.072701]  [<ffffffff8022bc88>] warn_on_slowpath+0x53/0x81
> [    0.072729]  [<ffffffff80246e8c>] ? save_trace+0x3f/0x95
> [    0.072757]  [<ffffffff80248610>] ? mark_lock+0x345/0x36d
> [    0.072786]  [<ffffffff80249384>] ? __lock_acquire+0x898/0x8b9
> [    0.072815]  [<ffffffff80241ab9>] ? atomic_notifier_chain_register+0x18/0x41
> [    0.072847]  [<ffffffff80241ad6>] ? atomic_notifier_chain_register+0x35/0x41
> [    0.072877]  [<ffffffff8021be64>] read_apic_id+0x2e/0x46
> [    0.072906]  [<ffffffff80611079>] verify_local_APIC+0xe1/0x16a
> [    0.072936]  [<ffffffff8061143a>] APIC_init_uniprocessor+0x54/0xf6
> [    0.072965]  [<ffffffff806161ed>] ? spawn_softlockup_task+0x56/0x5a
> [    0.072989]  [<ffffffff8060b7f4>] kernel_init+0x4c/0x1d6
> [    0.072989]  [<ffffffff804a70ea>] ? _spin_unlock_irq+0x50/0x5d
> [    0.072989]  [<ffffffff804a6697>] ? trace_hardirqs_on_thunk+0x35/0x3a
> [    0.072989]  [<ffffffff80248838>] ? trace_hardirqs_on+0xf8/0x122
> [    0.072989]  [<ffffffff8020bf28>] child_rip+0xa/0x12
> [    0.072989]  [<ffffffff8020bae3>] ? restore_args+0x0/0x30
> [    0.072989]  [<ffffffff8060b7a8>] ? kernel_init+0x0/0x1d6
> [    0.072989]  [<ffffffff8020bf1e>] ? child_rip+0x0/0x12
> [    0.072989]
> [    0.072989] ---[ end trace 4eaa2a86a8e2da22 ]---
> 
> 

Regards,

Gabriel C
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