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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-12-06 12:33:02 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-12-06 12:33:02 -0500 |
| commit | 2788cc47f4593cca2c3c73c7bb82cd32b88c8ef7 (patch) | |
| tree | 09b9de3f1e714873e1cfb947257c2de5a1040f5f /fs | |
| parent | 0f7ff2dabbc95ed7a8019d142274f0c7e083577d (diff) | |
| download | linux-2788cc47f4593cca2c3c73c7bb82cd32b88c8ef7.tar.bz2 | |
Don't reset ->total_link_count on nested calls of vfs_path_lookup()
we already zero it on outermost set_nameidata(), so initialization in
path_init() is pointless and wrong. The same DoS exists on pre-4.2
kernels, but there a slightly different fix will be needed.
Cc: stable@vger.kernel.org # v4.2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c index d84d7c7515fc..0c3974cd3ecd 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1996,7 +1996,6 @@ static const char *path_init(struct nameidata *nd, unsigned flags) nd->last_type = LAST_ROOT; /* if there are only slashes... */ nd->flags = flags | LOOKUP_JUMPED | LOOKUP_PARENT; nd->depth = 0; - nd->total_link_count = 0; if (flags & LOOKUP_ROOT) { struct dentry *root = nd->root.dentry; struct inode *inode = root->d_inode; |