[PATCH] debugfs: Add check for module parameter name

From	Arvind Yadav <arvind.yadav.cs@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH] debugfs: Add check for module parameter name
Date	2017-09-21 14:20 +0200
Message-ID	<us8Cu-Sx-9@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Here, start_creating() is calling by debugfs_create_dir()
and debugfs_create_automount(). driver can pass name as NULL in
debugfs_create_dir and debugfs_create_automount. So we need to
add check for 'name'.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 fs/debugfs/inode.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index c59f015..aa5988d 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -292,6 +292,9 @@ static struct dentry *start_creating(const char *name, struct dentry *parent)
 	if (IS_ERR(parent))
 		return parent;
 
+	if (!name)
+		return ERR_PTR(-ENOMEM);
+
 	error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
 			      &debugfs_mount_count);
 	if (error)
-- 
1.9.1

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[PATCH] debugfs: Add check for module parameter name Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-09-21 14:20 +0200
  Re: [PATCH] debugfs: Add check for module parameter name Al Viro <viro@ZenIV.linux.org.uk> - 2017-09-21 14:50 +0200
    Re: [PATCH] debugfs: Add check for module parameter name arvind <arvind.yadav.cs@gmail.com> - 2017-09-21 18:50 +0200
      Re: [PATCH] debugfs: Add check for module parameter name Al Viro <viro@ZenIV.linux.org.uk> - 2017-09-21 19:30 +0200

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