commit 43fe4bc236d667257eeebfb4f6bcbe2b92aea455

Author: Mark Wielaard <mark@klomp.org>

Date:   Fri Dec 14 14:32:27 2018 +0100

    arm64: Fix PTRACE_TRACEME memcheck/tests/linux/getregset.vgtest testcase.

    The sys_ptrace post didn't mark the thread as being in traceme mode.

    This occassionally would make the memcheck/tests/linux/getregset.vgtest

    testcase fail. With this patch it reliably passes.

diff --git a/coregrind/m_syswrap/syswrap-arm64-linux.c b/coregrind/m_syswrap/syswrap-arm64-linux.c

index 9ef54b4..650f5b9 100644

--- a/coregrind/m_syswrap/syswrap-arm64-linux.c

+++ b/coregrind/m_syswrap/syswrap-arm64-linux.c

@@ -499,6 +499,9 @@ PRE(sys_ptrace)

 POST(sys_ptrace)

 {

    switch (ARG1) {

+   case VKI_PTRACE_TRACEME:

+         ML_(linux_POST_traceme)(tid);

+         break;

    case VKI_PTRACE_PEEKTEXT:

    case VKI_PTRACE_PEEKDATA:

    case VKI_PTRACE_PEEKUSR: