On Mon, Mar 28, 2016 at 03:57:01PM +0300, Konstantin Belousov wrote: > ... > > Any suggestions for diagnosing this? > > > > Show me verbose dmesg of the running kernel. I have attached a copy of the dmesg.boot from yesterday (FreeBSD 11.0-CURRENT #2028 r297313M/297313:1100104: Sun Mar 27 06:27:24 PDT 2016) for the machine in question as "dmesg.boot.freebeast". > Also, does anything change with the faulting kernel if you set > hw.lapic_tsc_deadline to 0 in loader ? I have not tried that (it's not something that spontaneously comes to mind for me -- should it?), but I will try that after sending this note off: in the mean time, my laptop completed its build, and it also panicked... possibly in a similar way. Transcribing from a screenshot: Fatal trap 9: general protection fault while in kernel mode cpuid = 0; apic id = 00 instruction pointer = 0x20:0xffffffff80f0feb9 stack pointer = 0x28:0xffffffff82c58a40 frame pointer = 0x28:0xffffffff82c58aa0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = resume, IOPL = 0 current process = 0 (swapper) [ thread pid 0 tid 100000 ] Stopped at 0xffffffff80f0feb9 = lapic_et_start+0x2d9: wrmsr db> bt Tracing pid 0 tid 100000 td 0xffffffff81c0a780 lapic_et_start() at 0xffffffff80f0feb9 = lapic_et_start+0x2d9/frame 0xffffffff82c58aa0 loadtimer() at 0xffffffff80ed1db2 = loadtimer+0x102/frame 0xffffffff82c58ac0 configtimer() at 0xffffffff80ed17a9 = configtimer+0x239/frame 0xffffffff82c58b10 cpu_initclocks_bsp() at 0xffffffff80ed11ef = cpu_initclocks_bsp+0x37f/frame 0xffffffff82c58b40 initclocks() at 0xffffffff8099e8c0 = initclocks+0x20/frame 0xffffffff82c58b50 mi_startup() at 0xffffffff8099b568 = mi_startup+0x118/frame 0xffffffff82c58b70 btext() at 0xffffffff802fb02c = btext+0x2c db> I have also attached the dmesg.boot for the laptop, under the name "dmesg.boot.laptop". Thanks! Peace, david -- David H. Wolfskill david_at_catwhisker.org Those who would murder in the name of God or prophet are blasphemous cowards. See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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