Messages in this thread | | | Date | Thu, 16 Jun 2011 13:41:04 +0200 | From | Wojciech Zabołotny <> | Subject | Re: Kernel panic on HT machine - maybe i915 related? |
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W dniu 15.06.2011 22:24, Martin wrote: > Same here, although my panics look different from yours. In both cases I had a > lot of hardware interrupts on the stack trace but no kmemcheck. I only > remembered to take a photo with my mobile phone the second time. The stack > trace contains handle_*irq*, tg3, ata_bmdma, __ata_sff, i915, drm_vblank_put, > intel_thermal, try_preempt, resched*, drm_vblank_put, do_invalid_op, oops_end, > do_bounds, panic. The EIP is drm_vblank_put+0x13/0x50. > Probably you have not enabled kmemcheck in the kernel configuration? > Could this be an i915 issue with 2.6.39.1? At home I have two other machines > on i915 but with different chipsets that run fine with the same kernel. >
The i915 driver with 82865G chipset works strange for quite a long time (since 2.6.37???) The machine which causes problem uses this chipset. Another one which works good with 2.6.39.1 (I write this message on it) uses: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
>> As crash occurs only with HT on and doesn't happen on another machine >> with 2 cores, it seems that maybe the problem is associated with >> incorrect allocation of resources or locking for HT enabled CPU... > I do not observe the issue with the regular non-SMP 2.6.38.7 distro kernel, so > it might be HT related. Truth be told I need to investigate further since my > 2.6.39.1 kernel is patched. In the meantime, if someone recognizes the issue > please come forward. > In my last message ( https://groups.google.com/group/kernelarchive/browse_thread/thread/adaeb363d2eadf24/559b1fd44876e4a6 ) I've reported some problems even with HT switched off, but maybe it is associated with problems related to using both kmemcheck and perf, as reported e.g. here: https://lkml.org/lkml/2011/4/26/83 -- Regards, Wojtek
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