linux-kernel - Re: [PATCH] x86: Remove WARN_ON(in_nmi()) from vmalloc

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Message-ID: <20131016130151.GA14258@pd.tnic>
Date:	Wed, 16 Oct 2013 15:01:51 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"Wang, Xiaoming" <xiaoming.wang@...el.com>,
	"Li, Zhuangzhi" <zhuangzhi.li@...el.com>,
	"Liu, Chuansheng" <chuansheng.liu@...el.com>
Subject: Re: [PATCH] x86: Remove WARN_ON(in_nmi()) from vmalloc_fault

On Wed, Oct 16, 2013 at 02:51:11PM +0200, Ingo Molnar wrote:
> The one posted in the thread shows:
> 
> [   17.148755]  [<c2825b08>] do_page_fault+0x8/0x10
> [   17.153926]  [<c2823066>] error_code+0x5a/0x60
> [   17.158905]  [<c2825b00>] ? __do_page_fault+0x4a0/0x4a0
> [   17.164760]  [<c208d1a9>] ? module_address_lookup+0x29/0xb0
> [   17.170999]  [<c208dddb>] kallsyms_lookup+0x9b/0xb0
> [   17.186804]  [<c208def4>] sprint_symbol+0x14/0x20
> [   17.192063]  [<c208df1e>] __print_symbol+0x1e/0x40
> [   17.197430]  [<c25e00d7>] ? ashmem_shrink+0x77/0xf0
> [   17.202895]  [<c25e13e0>] ? logger_aio_write+0x230/0x230
> [   17.208845]  [<c205bdf5>] ? up+0x25/0x40
> [   17.213242]  [<c2039cb7>] ? console_unlock+0x337/0x440
> [   17.218998]  [<c2818236>] ? printk+0x38/0x3a
> [   17.223782]  [<c20006d0>] __show_regs+0x70/0x190
> [   17.228954]  [<c200353a>] show_regs+0x3a/0x1b0
> [   17.233931]  [<c2818236>] ? printk+0x38/0x3a
> [   17.238717]  [<c2824182>] arch_trigger_all_cpu_backtrace_handler+0x62/0x80
> [   17.246413]  [<c2823919>] nmi_handle.isra.0+0x39/0x60
> [   17.252071]  [<c2823a29>] do_nmi+0xe9/0x3f0

Btw, you probably should drop all the numbers and leave only the
function names in the stack trace.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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