Fix kconfig/Tasks parsing for kernel > 5.x

1. Fix kconfig extraction for kernel > 5.0.0.
2. Fix task call stack extraction for kernel > 5.2.0

Change-Id: Ic0d450ee6197f6fc7010b50884dea4d4855d5c1a
Signed-off-by: Shivendra Pratap <spratap@codeaurora.org>

linux-ramdump-parser-v2/parsers/taskdump.py

@@ -61,7 +61,11 @@ def dump_thread_group(ramdump, thread_group, task_out, taskhighlight_out, check_
     offset_stack = ramdump.field_offset('struct task_struct', 'stack')
     offset_state = ramdump.field_offset('struct task_struct', 'state')
     offset_prio = ramdump.field_offset('struct task_struct', 'prio')
+    if ramdump.kernel_version > (5, 2, 0):
+        offset_affine = ramdump.field_offset('struct task_struct', 'cpus_mask')
+    else:
         offset_affine = ramdump.field_offset('struct task_struct', 'cpus_allowed')
+
     offset_exit_state = ramdump.field_offset(
         'struct task_struct', 'exit_state')
     orig_thread_group = thread_group

linux-ramdump-parser-v2/ramdump.py

@@ -768,9 +768,19 @@ class RamDump():
         kconfig_addr = self.address_of('kernel_config_data')
         if kconfig_addr is None:
             return
+        if self.kernel_version > (5, 0, 0):
+            kconfig_addr_end = self.address_of('kernel_config_data_end')
+            if kconfig_addr_end is None:
+                return
+            kconfig_size = kconfig_addr_end - kconfig_addr
+            # magic is 8 bytes before kconfig_addr and data
+            # starts at kconfig_addr for kernel > 5.0.0
+            kconfig_addr = kconfig_addr - 8
+        else:
             kconfig_size = self.sizeof('kernel_config_data')
             # size includes magic, offset from it
             kconfig_size = kconfig_size - 16 - 1
+
         zconfig = NamedTemporaryFile(mode='wb', delete=False)
         # kconfig data starts with magic 8 byte string, go past that
         s = self.read_cstring(kconfig_addr, 8)