diff options
Diffstat (limited to 'fs/sysfs')
| -rw-r--r-- | fs/sysfs/dir.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index a5cf784f9cc..6b0bb00d4d2 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -307,6 +307,7 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags) { struct sysfs_dirent *sd; int is_dir; + int type; if (flags & LOOKUP_RCU) return -ECHILD; @@ -326,6 +327,15 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags) if (strcmp(dentry->d_name.name, sd->s_name) != 0) goto out_bad; + /* The sysfs dirent has been moved to a different namespace */ + type = KOBJ_NS_TYPE_NONE; + if (sd->s_parent) { + type = sysfs_ns_type(sd->s_parent); + if (type != KOBJ_NS_TYPE_NONE && + sysfs_info(dentry->d_sb)->ns[type] != sd->s_ns) + goto out_bad; + } + mutex_unlock(&sysfs_mutex); out_valid: return 1; |