Merge tag 'selinux-pr-20230829' of git://git.kernel.org/pub/scm/linux/kernel/git...

[J-linux.git] / scripts / gdb / linux / modules.py

diff --git a/scripts/gdb/linux/modules.py b/scripts/gdb/linux/modules.py
index 261f28640f4cdf213c56a95edae6ae4b5f7dadb5..298dfcc25eaea1bcb218bdaf364e9f0cfc7d7e4d 100644 (file)
--- a/scripts/gdb/linux/modules.py
+++ b/scripts/gdb/linux/modules.py
@@ -73,11 +73,17 @@ class LxLsmod(gdb.Command):
                 "        " if utils.get_long_type().sizeof == 8 else ""))
 
         for module in module_list():
-            layout = module['mem'][constants.LX_MOD_TEXT]
+            text = module['mem'][constants.LX_MOD_TEXT]
+            text_addr = str(text['base']).split()[0]
+            total_size = 0
+
+            for i in range(constants.LX_MOD_TEXT, constants.LX_MOD_RO_AFTER_INIT + 1):
+                total_size += module['mem'][i]['size']
+
             gdb.write("{address} {name:<19} {size:>8}  {ref}".format(
-                address=str(layout['base']).split()[0],
+                address=text_addr,
                 name=module['name'].string(),
-                size=str(layout['size']),
+                size=str(total_size),
                 ref=str(module['refcnt']['counter'] - 1)))
 
             t = self._module_use_type.get_type().pointer()
@@ -91,5 +97,35 @@ class LxLsmod(gdb.Command):
 
             gdb.write("\n")
 
-
 LxLsmod()
+
+def help():
+    t = """Usage: lx-getmod-by-textaddr [Heximal Address]
+    Example: lx-getmod-by-textaddr 0xffff800002d305ac\n"""
+    gdb.write("Unrecognized command\n")
+    raise gdb.GdbError(t)
+
+class LxFindTextAddrinMod(gdb.Command):
+    '''Look up loaded kernel module by text address.'''
+
+    def __init__(self):
+        super(LxFindTextAddrinMod, self).__init__('lx-getmod-by-textaddr', gdb.COMMAND_SUPPORT)
+
+    def invoke(self, arg, from_tty):
+        args = gdb.string_to_argv(arg)
+
+        if len(args) != 1:
+            help()
+
+        addr = gdb.Value(int(args[0], 16)).cast(utils.get_ulong_type())
+        for mod in module_list():
+            mod_text_start = mod['mem'][constants.LX_MOD_TEXT]['base']
+            mod_text_end = mod_text_start + mod['mem'][constants.LX_MOD_TEXT]['size'].cast(utils.get_ulong_type())
+
+            if addr >= mod_text_start and addr < mod_text_end:
+                s = "0x%x" % addr + " is in " + mod['name'].string() + ".ko\n"
+                gdb.write(s)
+                return
+        gdb.write("0x%x is not in any module text section\n" % addr)
+
+LxFindTextAddrinMod()