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authorMark Brown <broonie@kernel.org>2014-11-26 20:37:57 +0000
committerMark Brown <broonie@kernel.org>2014-11-26 20:37:57 +0000
commitcf2394f70cf7774a107fbaa1ef5010db4bd69baa (patch)
treee79e3e479d04213a67ecd47b31c7db648b0313c2 /fs/ecryptfs/main.c
parent45fc84c668ba6cc08cbae74042be838bf9283d98 (diff)
parent206c5f60a3d902bc4b56dab2de3e88de5eb06108 (diff)
Merge tag 'v3.18-rc4' into regulator-max77802
Linux 3.18-rc4
Diffstat (limited to 'fs/ecryptfs/main.c')
-rw-r--r--fs/ecryptfs/main.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 1b119d3bf924..c4cd1fd86cc2 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -566,6 +566,13 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
s->s_maxbytes = path.dentry->d_sb->s_maxbytes;
s->s_blocksize = path.dentry->d_sb->s_blocksize;
s->s_magic = ECRYPTFS_SUPER_MAGIC;
+ s->s_stack_depth = path.dentry->d_sb->s_stack_depth + 1;
+
+ rc = -EINVAL;
+ if (s->s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH) {
+ pr_err("eCryptfs: maximum fs stacking depth exceeded\n");
+ goto out_free;
+ }
inode = ecryptfs_get_inode(path.dentry->d_inode, s);
rc = PTR_ERR(inode);