VisionFive2 Linux kernel

author: Al Viro <viro@zeniv.linux.org.uk> 2019-04-02 15:17:34 -0400 committer: Al Viro <viro@zeniv.linux.org.uk> 2019-04-09 19:18:19 -0400 commit: ce285c267a003acbf607f3540ff71287f82e5282 parent: 5467a68cbf6884c9a9d91e2a89140afb1839c835

Commit Summary:

autofs: fix use-after-free in lockless ->d_manage()

Diffstat:

2 files changed, 2 insertions, 1 deletion

diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h
index 70c132acdab1..e1091312abe1 100644
--- a/fs/autofs/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -71,6 +71,7 @@ struct autofs_info {
 
 	kuid_t uid;
 	kgid_t gid;
+	struct rcu_head rcu;
 };
 
 #define AUTOFS_INF_EXPIRING	(1<<0) /* dentry in the process of expiring */
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index 80597b88718b..fb0225f21c12 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -36,7 +36,7 @@ void autofs_clean_ino(struct autofs_info *ino)
 
 void autofs_free_ino(struct autofs_info *ino)
 {
-	kfree(ino);
+	kfree_rcu(ino, rcu);
 }
 
 void autofs_kill_sb(struct super_block *sb)