Messages in this thread | | | Subject | 2.6.13-rt13 SMP crashes on boot | From | John Rigg <> | Date | Mon, 19 Sep 2005 19:54:26 +0100 |
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I've been trying to get 2.6.13 with RT-preempt patch to run on my dual Opteron with debugging code (with CONFIG_PREEMPT_RT=y). It crashes on boot if I enable latency tracing in .config. This happens with -rt13, -rt12, and -rt4 versions of the patch. Unfortunately it occurs before any logging, so I can't provide any log data. The crash appears to happen just after drive hda is detected, while it's trying to mount my ext3 / filesystem (on hda7). The mount fails then the screen fills with a segfault message in an infinite loop:
segfault at ffffffff8010f20c rip ffffffff8010f20c rsp 00007fffffacdc88
A hard reboot is then required.
Without latency tracing it boots and runs fine with the following:
Kernel debug MagicSysRq Detect soft lockups Wakeup latency timing Compile with debug info Collect scheduler stats Debug preemptible kernel
With latency tracing the crash occurs even if I disable all other kernel hacking except for Magic SysRq, Wakeup latency timing, and Compile w. debug info.
Hardware is 2 x Opteron 240, MSI K8T Master2-FAR (VIA K8T 800) m/board, 1GB ECC RAM. System is Debian amd64 unstable (gcc-4.0_4.0.1-7, binutils_2.16.1cvs20050902-1). Copy of .config and lspci output are here: http://www.sound-man.co.uk/crash
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