procfs: fix race between symlink removals and traversals
authorAl Viro <viro@zeniv.linux.org.uk>
Sun, 22 Feb 2015 03:16:11 +0000 (22:16 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 18 Mar 2015 12:22:32 +0000 (13:22 +0100)
commitcf6c05a77c5ef41bd72f45a4a008724ffd393668
tree6f2f2960eea3cc25b14ef7928ffca93c77152006
parentdb32c77427f773d625bc1e27720bd98cbb807185
procfs: fix race between symlink removals and traversals

commit 7e0e953bb0cf649f93277ac8fb67ecbb7f7b04a9 upstream.

use_pde()/unuse_pde() in ->follow_link()/->put_link() resp.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/proc/generic.c
fs/proc/inode.c
fs/proc/internal.h