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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-02-27 19:37:37 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-03 15:07:30 -0800 |
| commit | d57c0477f842af4fdcfa93454bc2ad94d73b7158 (patch) | |
| tree | 7c7a722bb7eaaa0c6528f8f008a46621c3a8cc10 /fs/namei.c | |
| parent | 6f4b352f004c696439c5b5d75a4edc3d0823e770 (diff) | |
| download | lwn-d57c0477f842af4fdcfa93454bc2ad94d73b7158.tar.gz lwn-d57c0477f842af4fdcfa93454bc2ad94d73b7158.zip | |
do_last(): ELOOP failure exit should be done after leaving RCU mode
commit 5129fa482b16615fd4464d2f5d23acb1b7056c66 upstream.
... or we risk seeing a bogus value of d_is_symlink() there.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/namei.c b/fs/namei.c index 930b51d6308b..d8ee4da93650 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3149,11 +3149,6 @@ finish_lookup: if (unlikely(error)) return error; - if (unlikely(d_is_symlink(path.dentry)) && !(open_flag & O_PATH)) { - path_to_nameidata(&path, nd); - return -ELOOP; - } - if ((nd->flags & LOOKUP_RCU) || nd->path.mnt != path.mnt) { path_to_nameidata(&path, nd); } else { @@ -3172,6 +3167,10 @@ finish_open: return error; } audit_inode(nd->name, nd->path.dentry, 0); + if (unlikely(d_is_symlink(nd->path.dentry)) && !(open_flag & O_PATH)) { + error = -ELOOP; + goto out; + } error = -EISDIR; if ((open_flag & O_CREAT) && d_is_dir(nd->path.dentry)) goto out; |