Also PTRACE_OLDSETOPTIONS should be accepted, as done by kernel/ptrace.c and
forced by binary compatibility. UML/32bit breaks because of this - since it is 
wise
enough to use PTRACE_OLDSETOPTIONS to be binary compatible with 2.4 host
kernels.

Until 2.6.17 (commit f0f2d6536e3515b5b1b7ae97dc8f176860c8c2ce) we had:

       default:
                return sys_ptrace(request, pid, addr, data);

Instead here we have:
        case PTRACE_GET_THREAD_AREA:
        case ...:
                return sys_ptrace(request, pid, addr, data);

        default:
                return -EINVAL;

This change was a style change - when a case is added, it must be explicitly
tested this way. In this case, not enough testing was done.

Cc: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>

---
 arch/x86_64/ia32/ptrace32.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-2.6.20.1.orig/arch/x86_64/ia32/ptrace32.c
+++ linux-2.6.20.1/arch/x86_64/ia32/ptrace32.c
@@ -243,6 +243,7 @@ asmlinkage long sys32_ptrace(long reques
        case PTRACE_SINGLESTEP:
        case PTRACE_DETACH:
        case PTRACE_SYSCALL:
+       case PTRACE_OLDSETOPTIONS:
        case PTRACE_SETOPTIONS:
        case PTRACE_SET_THREAD_AREA:
        case PTRACE_GET_THREAD_AREA:

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