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-rw-r--r--fs/sysfs/dir.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 3e076ca..ea9120a 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -239,9 +239,13 @@ static int sysfs_dentry_delete(const struct dentry *dentry)
static int sysfs_dentry_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- struct sysfs_dirent *sd = dentry->d_fsdata;
+ struct sysfs_dirent *sd;
int is_dir;
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ sd = dentry->d_fsdata;
mutex_lock(&sysfs_mutex);
/* The sysfs dirent has been deleted */