linux-kernel - Re: [PATCH 0/1] x86: fix remove cpu

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Message-ID: <20080430060417.GA2408@elte.hu>
Date:	Wed, 30 Apr 2008 08:04:17 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] x86: fix remove cpu_pda table patch


* Ingo Molnar <mingo@...e.hu> wrote:

> * Mike Travis <travis@....com> wrote:
> 
> > -	prev_nmi_count = kmalloc(NR_CPUS * sizeof(int), GFP_KERNEL);
> > +	prev_nmi_count = kmalloc(nr_cpu_ids * sizeof(int), GFP_KERNEL);
> 
> yeah, that makes sense ... i'll reinstate your patches and check.

they crashed after about 3 randconfig iterations with:

  early res: 4 [8000-afff] PGTABLE
  early res: 5 [b000-b87f] MEMNODEMAP
PANIC: early exception 0e rip 10:ffffffff8077a150 error 2 cr2 37
Pid: 0, comm: swapper Not tainted 2.6.25-sched-devel.git-x86-latest.git #14

Call Trace:
 [<ffffffff81466196>] early_idt_handler+0x56/0x6a
 [<ffffffff8077a150>] ? numa_set_node+0x30/0x60
 [<ffffffff8077a129>] ? numa_set_node+0x9/0x60
 [<ffffffff8147a543>] numa_init_array+0x93/0xf0
 [<ffffffff8147b039>] acpi_scan_nodes+0x3b9/0x3f0
 [<ffffffff8147a496>] numa_initmem_init+0x136/0x150
 [<ffffffff8146da5f>] setup_arch+0x48f/0x700
 [<ffffffff802566ea>] ? clockevents_register_notifier+0x3a/0x50
 [<ffffffff81466a87>] start_kernel+0xd7/0x440
 [<ffffffff81466422>] x86_64_start_kernel+0x222/0x280

RIP 0x10


 http://redhat.com/~mingo/misc/log-Wed_Apr_30_00_28_09_CEST_2008.bad
 http://redhat.com/~mingo/misc/config-Wed_Apr_30_00_28_09_CEST_2008.bad

	Ingo
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