Date: Fri, 07 Aug 2015 12:29:07 -0700 From: John Baldwin <jhb@freebsd.org> To: freebsd-fs@freebsd.org Subject: Re: BTX halted Message-ID: <2241493.vMCzZXQH3f@ralph.baldwin.cx> In-Reply-To: <1429520064.12915.56.camel@data-b104.adm.slu.se> References: <1429520064.12915.56.camel@data-b104.adm.slu.se>
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On Monday, April 20, 2015 08:54:24 AM Karli Sjöberg wrote: > Hey all! > > I was just upgrading one of our storage's to 10-STABLE as per Bug > 191348[*] when something strange happened after writing new boot code > and rebooting: > > BTX loader 1.00 BTX version is 1.02 > Consoles: internal video/keyboard > BIOS drive C: is disk8 > BIOS drive D: is disk9 > > int=00000000 err=00000000 efl=00010246 eip=00037d34 > eax=00000001 ebx=00000000 ecx=00000000 edx=00000000 > esi=00000000 edi=00000000 ebp=0008f600 esp=0008f598 > cs=002b ds=0033 es=0033 fs=0033 gs=0033 ss=0033 > cs:eip=f7 35 d0 f4 03 00 85 f6-74 05 89 3e 89 5e 04 89 > c2 e9 cc 00 00 00 66 c7-45 ea 00 00 89 d8 c1 e8 > ss:esp=00 00 20 00 00 00 00 00-00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 > BTX halted > > Never happened to me before. I then booted with a 10.1-RELEASE CD and > wrote bootcode from that, same problem. 9.3; same there... > > Any pointers? Hmm, looks like a divide-by-zero fault: 00000000 F735D0F40300 div dword [dword 0x3f4d0] 00000006 85F6 test esi,esi 00000008 7405 jz 0xf 0000000A 893E mov [esi],edi 0000000C 895E04 mov [esi+0x4],ebx 0000000F 89C2 mov edx,eax 00000011 E9CC000000 jmp dword 0xe2 00000016 66C745EA0000 mov word [ebp-0x16],0x0 0000001C 89D8 mov eax,ebx Are you using ZFS or UFS? Also, do you have the world build from when you did this? If so we can use gdb on the 'loader.sym' file to map the faulting instruction (eip above) to a source line. -- John Baldwin
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