From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fernando Lopez-Lezcano Subject: Re: 3.12.9-rt13: BUG: soft lockup Date: Thu, 13 Feb 2014 22:26:39 -0800 Message-ID: <52FDB71F.2020000@ccrma.stanford.edu> References: <52FBF2F1.8040504@localhost> <52FD4D89.2000207@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: nando@ccrma.Stanford.EDU, linux-rt-users , Sebastian Andrzej Siewior , Steven Rostedt , John Kacur , LKML To: Thomas Gleixner Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On 02/13/2014 03:55 PM, Thomas Gleixner wrote: > 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:[] [] >>>> 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:[] >> [] 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? Indeed, sorry for the mixup... here I go again, hopefully this one will make sense: # addr2line -e /usr/lib/debug/lib/modules/3.12.9-301.rt13.1.fc20.ccrma.x86_64+rt/vmlinux ffffffff810dc60e /usr/src/debug/kernel-3.12.fc20.ccrma/linux-3.12.9-301.rt13.1.fc20.ccrma.x86_64/kernel/smp.c:108 -- Fernando