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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-03-31 06:23:05 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-03-31 06:23:05 +0200 |
| commit | 7500c38ac3258815f86f41744a538850c3221b23 (patch) | |
| tree | 5de89379a1d4923d9746d0d0747944edd06710d7 | |
| parent | Linux 4.6-rc1 (diff) | |
| download | linux-7500c38ac3258815f86f41744a538850c3221b23.tar.xz linux-7500c38ac3258815f86f41744a538850c3221b23.zip | |
fix the braino in "namei: massage lookup_slow() to be usable by lookup_one_len_unlocked()"
We should try to trigger automount *before* bailing out on negative dentry.
Reported-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Reported-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Reported-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/namei.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/namei.c b/fs/namei.c index 794f81dce766..1d9ca2d5dff6 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1740,15 +1740,17 @@ static int walk_component(struct nameidata *nd, int flags) nd->flags); if (IS_ERR(path.dentry)) return PTR_ERR(path.dentry); - if (unlikely(d_is_negative(path.dentry))) { - dput(path.dentry); - return -ENOENT; - } + path.mnt = nd->path.mnt; err = follow_managed(&path, nd); if (unlikely(err < 0)) return err; + if (unlikely(d_is_negative(path.dentry))) { + path_to_nameidata(&path, nd); + return -ENOENT; + } + seq = 0; /* we are already out of RCU mode */ inode = d_backing_inode(path.dentry); } |