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Subject: [Bug 193672] New: FreeBSD UEFI boot panics with VirtualBox UEFI loader
Date: Mon, 15 Sep 2014 21:24:52 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193672

            Bug ID: 193672
           Summary: FreeBSD UEFI boot panics with VirtualBox UEFI loader
           Product: Base System
           Version: 10.1-BETA1
          Hardware: Any
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: emaste@freebsd.org

Created attachment 147364
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=147364&action=edit
verbose boot serial log from boot panic

kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x486a8e215
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80300007
stack pointer           = 0x28:0xffffffff81493070
frame pointer           = 0x28:0x0
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 ()
trap number             = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff80947060 at ??+0
#1 0xffffffff8090c185 at ??+0
#2 0xffffffff80d07b6f at ??+0
#3 0xffffffff80d07e88 at ??+0
#4 0xffffffff80d074ea at ??+0
#5 0xffffffff80ced402 at ??+0
Uptime: 1s

Via LLDB the reported IP is:

      Address: kernel[0xffffffff80300007] (kernel..text + 161399)
      Summary: kernel`chopen + 855 [inlined] scsi_2btoul + 4 at scsi_ch.c:1632
               kernel`chopen + 851 [inlined] chgetparams + 288 at scsi_ch.c:485
               kernel`chopen + 563 at scsi_ch.c:485

(This seems a bit odd.)

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