This chunk from linux-2.6-utrace.patch breaks PTRACE_SYSEMU, which UML
rather relies on.
@@ -514,9 +514,6 @@ syscall_trace_entry:
movl %esp, %eax
xorl %edx,%edx
call do_syscall_trace
- cmpl $0, %eax
- jne resume_userspace # ret != 0 -> running under PTRACE_SYSEMU,
- # so must skip actual syscall
movl PT_ORIG_EAX(%esp), %eax
cmpl $(nr_syscalls), %eax
jnae syscall_call
If the point of this patch was to completely remove ptrace support,
with later patches adding it back, then that chunk should be added
back in utrace-ptrace-compat.patch.
Jeff
--
Work email - jdike at linux dot intel dot com
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