l4linux26 @ fiasco-ux w/ dietlibc

Udo A. Steinberg us15 at os.inf.tu-dresden.de
Wed Nov 2 14:10:33 CET 2005


On Wed, 2 Nov 2005 13:18:15 +0100 Marko Wolf (MW) wrote:

MW> I'm compiling  FUX w/ a 2.6.12 Debian w/ libc 2.5.3 and I enabled all 
MW> experimental options except KIP_SYSCALLS and LOCAL_IPC.  However, I 
MW> updated the sources from your CVS again and - viola - now its running with
MW> the same configuration as before with only a unhandled kernel trap (that 
MW> fortunately doesn't halts the bootup procedure) when using l4dope instead
MW> of (errorfree) console.
MW> 
MW> KERNEL: e.2 (tcb=50702000) killed:
MW> Unhandled trap
MW> 
MW> EAX 00000000 EBX 00afff04 ECX 00000000 EDX 00000000
MW> ESI 00000000 EDI 00000000 EBP 00affeec ESP 00affed4
MW> EIP 01303a78 EFLAGS 00010246
MW> CS 0002 SS 007b DS 007b ES 007b FS 0000 GS 0007
MW> trapno 16, error 00000000, from user mode
    ^^^^^^^^^

Try disassembling the offending program (Task E) using objdump -DC <binary>
and find out what's at EIP 0x1303a78. I bet it's a DIV instruction and the
operand is 0.

-Udo.
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