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autofs: remove ino free in autofs4_dir_symlink() 

The inode allocation failure case in autofs4_dir_symlink() frees the
autofs dentry info of the dentry without setting ->d_fsdata to NULL.

That could lead to a double free so just get rid of the free and leave it
to ->d_release().

Link: http://lkml.kernel.org/r/20160812024759.12352.10653.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ian Kent 2016-10-11 13:52:39 -07:00 committed by Linus Torvalds
parent 97537b35b6
commit 1574fa7beb
1 changed files with 0 additions and 2 deletions
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2
fs/autofs4/root.c
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@ -577,8 +577,6 @@ static int autofs4_dir_symlink(struct inode *dir,
inode = autofs4_get_inode(dir->i_sb, S_IFLNK | 0555); inode = autofs4_get_inode(dir->i_sb, S_IFLNK | 0555);
if (!inode) { if (!inode) {
kfree(cp); kfree(cp);
if (!dentry->d_fsdata)
kfree(ino);
return -ENOMEM; return -ENOMEM;
} }
inode->i_private = cp; inode->i_private = cp;