From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4ACB5920.4040501@domain.hid> Date: Tue, 06 Oct 2009 16:50:08 +0200 From: Roman Pisl MIME-Version: 1.0 References: <4AC5E895.8010107@domain.hid> <4AC5F49E.3070608@domain.hid> <4AC5FEAD.7000608@domain.hid> <4AC77576.9070700@domain.hid> <4AC9E655.5090006@domain.hid> <4AC9ED6B.4050004@domain.hid> <4AC9F4FA.5070409@domain.hid> <4ACA013F.8040602@domain.hid> <4ACB4389.10109@domain.hid> <4ACB4C70.80406@domain.hid> In-Reply-To: <4ACB4C70.80406@domain.hid> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Freeze on SMP x86-64 List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: xenomai@xenomai.org On 6.10.2009 15:56, Jan Kiszka wrote: > Roman Pisl wrote: >> ... >>> >>> Is there a chance to grab the panic log via serial line? The first of >>> your two screenshots indicate that there might have happened something >>> interesting before the NMI triggered, but it's scrolled out of sight. >>> >>> Jan >>> >> >> Hello, >> here I send kernel panic (triggered by rt_task_sleep and latency test) >> grabbed via serial line. > > Hmm, still only NMI alarms... > >> >> I'm ready to help with resolving this issue. > > Could you try enabling the I-pipe tracer with function tracing? It > should dump a trace of the functions that were executed before the > watchdog triggered. You may need to extend the number of tracepoints a > bit, try "echo 1000> /proc/ipipe/trace/back_trace_points". > > Jan > Unfortunately I get no kernel panic when both I-pipe tracer and NMI watchdog are enabled. The machine just totally freezes on both rt_task_sleep and latency test :( I tried serial console, text console, even tried disabling fb. Roman