10.0-RELEASE BTX halted on DELL R900
wsk at gddsn.org.cn
Sun Jul 6 04:42:03 UTC 2014
于 2014/07/05 20:57, Dimitry Andric 写道:
hi, Andric it still got BTX halted with your patched loader. and here is
> On 05 Jul 2014, at 08:09, Arrigo Marchiori <ardovm at yahoo.it> wrote:
>> On Fri, Jul 04, 2014 at 03:37:27PM +0800, wsk wrote:
>>> I met a BTX halted problem while upgrade Freebsd 9.0-RC3 to
>>> 10.0-Release via freebsd-update.
>>> and please check the link below:
>>> BTW: I can booted 10.0-R from DVD-ROM as expected but got same error
>>> message with flash-driver.
>> I don't remember if that error message means ``division by zero''.
> It certainly looks a lot like it. The code at cs:eip from the OP's
> screenshot disassembles to:
> 36217: f7 35 bc d6 03 00 divl 0x3d6bc
> 3621d: 85 ff test %edi,%edi
> 3621f: 74 05 je 0x36226
> 36221: 89 1f mov %ebx,(%edi)
> 36223: 89 4f 04 mov %ecx,0x4(%edi)
> 36226: 89 c2 mov %eax,%edx
> 36228: e9 c2 00 00 00 jmp 0x362ef
> 3622d: 66 c7 45 ea 00 00 movw $0x0,-0x16(%ebp)
> 36233: 89 c8 mov %ecx,%eax
> This is a piece of code from /usr/src/lib/libstand/qdivrem.c, which is
> used to do 64-bit divides.
> It would be nice if you could try out this loader binary, which has a
> few additional checks for zero sector counts or sizes:
> SHA256 (loader.edd) = 89f99500adb3a8feaa84336ce625975bcfdc0f886514ab02de4992859a671aa9
> However, this might still mis-detect your disk sizes, obviously.
>> Just in case, you could try the patch attached to this bug:
>> The patch was compiled for 9-STABLE; if it does not apply to the 10.0
>> sources, then drop me a line so I can adapt it.
> I tried this patch on a few FreeBSD VMs, and each of them stopped being
> able to mount the root filesystem because of it. I don't really know
> what the explanation is...
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