On Wednesday 17 August 2005 10:43 am, Emanuel Strobl wrote: > Am Dienstag, 16. August 2005 19:52 CEST schrieb Brooks Davis: > > On Tue, Aug 16, 2005 at 02:05:08PM +0200, Emanuel Strobl wrote: > > > Hello, > > > > > > I just wanted to ask if somebody had success with providing pxe boot > > > service under 6-BETA2. > > > I have two clients, one NET4501 wich just reboots after fetching > > > pxeldr via TFTP and a Laptop which just hangs when NFS-loading kernel. > > > > > > I'm about to investigate further, but maybe someone can confirm that > > > in general PXE booting with BETA2 is working... Or not... > > > > I'm PXE booting systems with RELENG_6 as of 7/27. I'll probably do an > > update some time this week. > > Ok, I read som files and found -DBTX_SERIAL. This gives me the following > dump before the box reboots: > uilding the boot loader arguments > Relocating the loader and the BTX > Starting the BTX loader > > int=00000006 err=00000000 efl=00010202 eip=00023c21 > eax=00000000 ebx=000384e0 ecx=000384e0 edx=00000001 > esi=00001000 edi=00000029 ebp=00086770 esp=00086758 > cs=002b ds=0033 es=0033 fs=0033 gs=0033 ss=0033 > cs:eip=0f 4f c2 a3 c8 7d 03 00-8d 41 0c c7 41 04 fd 44 > ff 55 89 39 c6 44 39 ff-fe 83 c4 0c 5b 5e 5f 5d > ss:esp=b4 7d 03 00 29 00 00 00-00 10 00 00 00 00 00 00 > 83 57 02 00 02 00 00 00-a0 67 08 00 98 1c 02 00 > BTX halted > > Any clue? Regarding cvsweb nothing changed recently, and I had net4501 > boxes pxebooting fine with FreeBSD 5.3..... Hmm. Int 6 is an invalid opcode exception: 00000000 0F4FC2 cmovg eax,edx 00000003 A3C87D0300 mov [0x37dc8],eax 00000008 8D410C lea eax,[ecx+0xc] 0000000B C74104FD44FF55 mov dword [ecx+0x4],0x55ff44fd 00000012 8939 mov [ecx],edi 00000014 C64439FFFE mov byte [ecx+edi-0x1],0xfe 00000019 83C40C add esp,byte +0xc 0000001C 5B pop ebx 0000001D 5E pop esi 0000001E 5F pop edi 0000001F 5D pop ebp I'm guessing that there's been a stack overflow or some such. Your eip is in the loader. You can try using the loader.sym from your loader binary to look up that eip address. In the loader here on my laptop it's in the write function: % nm /usr/obj/usr/src/sys/boot/i386/loader/loader.sym | sort ... 00023b9c T readdirfd 00023c14 T write 00023d18 T lseek If you want to be able to use gdb, then rebuild libstand with debugging (make DEBUG_FLAGS=-g) and rebuild all of /sys/boot with debugging (make DEBUG_FLAGS=-g). You can then use /usr/obj/usr/src/sys/boot/i386/pxeldr/pxeboot for your pxeboot and you can run gdb on /usr/obj/usr/src/sys/boot/i386/loader/loader.sym and you can do listings of the addresses for eip, etc. -- John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orgReceived on Wed Aug 17 2005 - 17:49:46 UTC
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