UPT_SYSCALL_ARG6   20 arch/x86/um/shared/sysdep/ptrace_32.h #define UPT_SYSCALL_ARG6(r) UPT_BP(r)
UPT_SYSCALL_ARG6   58 arch/x86/um/shared/sysdep/ptrace_64.h #define UPT_SYSCALL_ARG6(r) UPT_R9(r)