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NAME
BT - Display a verbose stack trace of a process
SYNOPSIS
BT [ address ]
Bt [ address ]
DESCRIPTION
The BT command takes an optional argument, the
address of a stack frame. It prints out a detailed
stack trace, showing stack frame contents.
The BT command only traces as far back as the the entry into kernel space. Bt will trace back into user space.
Both BT and Bt are native kcrash commands. There is also a macro named bt.
Typical output looks like this:
S> BT E0004894 B0 E00048A4 <= EBP cmn_err+B: E8 10 00 00 00 call 10( ... etc )cmn_err+10: 83 C4 08 addl $8,%esp E0004898 D00183C0 <= EIP E000489C 00000003 8(%ebp) E00048A0 E00048B0 C(%ebp) E00048A4 E00048EC <= EBP m400nmi+691: E8 6A 3E FA FF call FFFA3E6A m400nmi+696: 83 C4 10 addl $10,%esp E00048A8 D0074546 <= EIP E00048AC 00000003 8(%ebp) E00048B0 D0164F7C C(%ebp) E00048B4 D0164FA8 10(%ebp) E00048B8 D001248A 14(%ebp) E00048BC 00000000 %ebx E00048C0 D0282A1C %esi E00048C4 E0004A30 %edi E00048C8 DC 00000008 E00048CC E0 00000006 E00048D0 E4 00000000 E00048D4 E8 00000001 E00048D8 EC 00000000 E00048DC F0 00000008 E00048E0 F4 00000000 E00048E4 F8 0000492C ,I E00048E8 FC 01FE2000 E00048EC E0004A24 <= EBP k_trap+3E7: E8 94 50 03 00 call 35094 k_trap+3EC: 83 C4 08 addl $8,%esp E00048F0 D003EE1C <= EIP E00048F4 E0004A30 8(%ebp) E00048F8 00000001 C(%ebp) E00048FC 00000007 %ebx E0004900 D0282A1C %esi E0004904 00000002 %edi
DEFINED IN
stack.k
SEE ALSO
sp