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authorSuraj Das <surajdazz@gmail.com>2017-06-25 19:07:06 +0530
committerSuraj Das <surajdazz@gmail.com>2017-06-25 19:15:40 +0530
commit6e033ebda94e620277a569625745cf21c749efdb (patch)
tree641e80dabecde9fd9108b654bf43828d78632509 /fs/ecryptfs/main.c
parentfa097959467283e96988ba548a20ccb3ec27c0c1 (diff)
parent262196005747d5e8b4106e92adae3749e8686240 (diff)
Merge branch 'cm-14.1' of https://github.com/LineageOS/android_kernel_oneplus_msm8974 into n7.1HEADn7.1
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 93b7bec021b..81e69c7a74b 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -576,6 +576,13 @@ 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);