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Commit 115cbfdc authored by Al Viro's avatar Al Viro
Browse files

let path_init() failures treated the same way as subsequent link_path_walk() 



As it is, path_lookupat() and path_mounpoint() might end up leaking struct file
reference in some cases.

Spotted-by: default avatarEric Biggers <ebiggers3@gmail.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 24dff96a

fs/namei.c

+3 −2
Original line number Diff line number Diff line
@@ -1950,7 +1950,7 @@ static int path_lookupat(int dfd, const char *name, 
	err = path_init(dfd, name, flags | LOOKUP_PARENT, nd, &base);



	if (unlikely(err))

		return err;

		goto out;



	current->total_link_count = 0;

	err = link_path_walk(name, nd);
@@ -1982,6 +1982,7 @@ static int path_lookupat(int dfd, const char *name, 
		}

	}



out:

	if (base)

		fput(base);
@@ -2301,7 +2302,7 @@ path_mountpoint(int dfd, const char *name, struct path *path, unsigned int flags 


	err = path_init(dfd, name, flags | LOOKUP_PARENT, &nd, &base);

	if (unlikely(err))

		return err;

		goto out;



	current->total_link_count = 0;

	err = link_path_walk(name, &nd);