[PATCH] scripts: docs: kdoc_files.py: don't consider symlinks as directories

[Mauro Carvalho Chehab]

As reported by Randy, currently kdoc_files can go into endless
looks when symlinks are used:

	$ ln -s . Documentation/peci/foo
	$ ./scripts/kernel-doc Documentation/peci/
	...
	  File "/new_devel/docs/scripts/lib/kdoc/kdoc_files.py", line 52, in _parse_dir
	    if entry.is_dir():
	       ~~~~~~~~~~~~^^
	OSError: [Errno 40] Too many levels of symbolic links: 'Documentation/peci/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo/foo'

Prevent that by not considering symlinks as directories.

Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Closes: https://lore.kernel.org/linux-doc/80701524-09fd-4d68-8715-331f47c969f2@xxxxxxxxxxxxx/
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 scripts/lib/kdoc/kdoc_files.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/lib/kdoc/kdoc_files.py b/scripts/lib/kdoc/kdoc_files.py
index 061c033f32da..1fd8d17edb32 100644
--- a/scripts/lib/kdoc/kdoc_files.py
+++ b/scripts/lib/kdoc/kdoc_files.py
@@ -49,7 +49,7 @@ class GlobSourceFiles:
             for entry in obj:
                 name = os.path.join(dirname, entry.name)
 
-                if entry.is_dir():
+                if entry.is_dir(follow_symlinks=False):
                     yield from self._parse_dir(name)
 
                 if not entry.is_file():
-- 
2.51.1