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Date: Fri, 14 Feb 2014 00:55:27 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU>
cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
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        Steven Rostedt <rostedt@goodmis.org>, John Kacur <jkacur@redhat.com>,
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Subject: Re: 3.12.9-rt13: BUG: soft lockup
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On Thu, 13 Feb 2014, Fernando Lopez-Lezcano wrote:

> On 02/13/2014 02:25 PM, Thomas Gleixner wrote:
> > On Wed, 12 Feb 2014, Fernando Lopez-Lezcano wrote:
> > > [771508.546449] RIP: 0010:[<ffffffff810dc60a>]  [<ffffffff810dc60a>]
> > > smp_call_function_many+0x2ca/0x330
> > 
> > Can you decode the exact location inside of smp_call_function_many via
> > addr2line please ?
> 
> Hope this is useful (adding 0x2ce/0x330 as offsets does not make any
> difference, don't know if it should)...
> 
> # grep smp_call_function /var/log/messages|tail -1
> Feb 12 14:18:21 cmn27 kernel: [771840.224419] RIP: 0010:[<ffffffff810dc60e>]
> [<ffffffff810dc60e>] smp_call_function_many+0x2ce/0x330
> # addr2line -e
> /usr/lib/debug/lib/modules/3.12.10-300.rt15.1.fc20.ccrma.x86_64+rt/vmlinux
> ffffffff810dc60e
> /usr/src/debug/kernel-3.12.fc20.ccrma/linux-3.12.10-300.rt15.1.fc20.ccrma.x86_64/kernel/rtmutex.c:1295
> 

I can't see how the kernel decoder thinks it's smp_call_function_many
but addr2line looks at rtmutex.c

That doesn't make any sense at all. Version mismatch?

Thanks,

	tglx
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