Alan Cox wrote: > On Tue, Feb 10, 2009 at 2:20 PM, Mark Atkinson <atkin901_at_yahoo.com> wrote: > [snip] >> >> >> >> Well, taking the information I knew -- OCT 15th == good, Mid DEC == BAD, >> I trolled every commit logged between. Eventually I found this one: >> >> http://svn.freebsd.org/viewvc/base?view=revision&revision=185715 >> >> http://docs.freebsd.org/cgi/mid.cgi?200812061937.mB6JbqAI003273 >> >> I set vm.pmap.pg_ps_enabled="0" in /boot/loader.conf, and >> was able to complete buildworld and -j16 buildworld and -j8 buildkernel >> no problem. >> >> It appears superpage mapping causes alignment problems on this box. > > > Can you please provide more detailed information about this machine, in > particular, the processor including the revision? It would also be > helpful to see what gdb says about a couple of these crashes, > specifically, the machine registers at the time of the exception. Looking at the core a little further, you probably want the registers at the frame before the signal handler is called. [...] #61 0x178d2d478b6062af in ?? () #62 0x000000000000000a in ?? () #63 0x0000000000504620 in ?? () #64 0x0000000000000001 in ?? () #65 <signal handler called> #66 0x0000000000444d68 in ?? () #67 0x0000000000000000 in ?? () #68 0x0000000000000001 in ?? () #69 0x0000000800ce0f30 in ?? () [...] (gdb) frame 66 #66 0x0000000000444d68 in ?? () (gdb) info registers rax 0x0 0 rbx 0x1 1 rcx 0x8019ff030 34386997296 rdx 0x1 1 rsi 0x8019ff060 34386997344 rdi 0x8019fe0a0 34386993312 rbp 0x801a00000 0x801a00000 rsp 0x7fffffffe180 0x7fffffffe180 r8 0x2 2 r9 0x0 0 r10 0x1 1 r11 0x801a00000 34387001344 r12 0x801a00000 34387001344 r13 0x800ce0f30 34373242672 r14 0x8019fe060 34386993248 r15 0x0 0 rip 0x444d68 0x444d68 eflags 0x297 663 cs 0x2b 43 ss 0x23 35 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 -- Mark Atkinson atkin901_at_yahoo.com (!wired)?(coffee++):(wired);Received on Fri Feb 20 2009 - 16:58:31 UTC
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