Date: Sun, 03 Oct 2010 22:12:29 -0700 From: Dave Hayes <dave@jetcafe.org> To: alc@freebsd.org Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Panic: attempted pmap_enter on 2MB page Message-ID: <201010040512.o945CTor092854@hugeraid.jetcafe.org> In-Reply-To: <AANLkTikenQoA7UBo_N3bzQJ9ABJSTGL89_Qda_Tu7Wa0@mail.gmail.com> References: <201010030211.o932Bd4C048116@hugeraid.jetcafe.org> <AANLkTikenQoA7UBo_N3bzQJ9ABJSTGL89_Qda_Tu7Wa0@mail.gmail.com>
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Alan Cox <alan.l.cox@gmail.com> writes: > I'm afraid that I can't offer much insight without a stack trace. At > initialization time, we map the kernel with 2MB pages. I suspect that > something within the kernel is later trying to change one those mappings. > If I had to guess, it's related to the mfs root. Here is the stack trace. The machine is sitting here in KDB if you need me to extract any information from it. I db> bt Tracing pid 0 tid 0 td 0xffffffff80c67140 kdb_enter() at kdbenter+0x3d panic() at panic+0x17b pmap_enter() at pmap_enter+0x641 kmem_malloc() at kmem_malloc+0x1b5 uma_large_malloc() at uma_large_malloc+0x4a malloc() at malloc+0xd7 acpi_alloc_wakeup_handler() at acpi_alloc_wakeup_handler+0x82 mi_startup() at mi_startup+0x59 btext() at btext+0x2c db> -- Dave Hayes - Consultant - Altadena CA, USA - dave@jetcafe.org >>> The opinions expressed above are entirely my own <<< Only one who is seeking certainty can be uncertain.
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