From 456ef1553cb2b06729d64c1d1f0f2bda34e9b201 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 16 Jan 2008 12:10:53 +0900 Subject: sysfs: fix bugs in sysfs_rename/move_dir() sysfs_rename/move_dir() have the following bugs. - On dentry lookup failure, kfree() is called on ERR_PTR() value. - sysfs_move_dir() has an extra dput() on success path. Fix them. Signed-off-by: Tejun Heo Signed-off-by: Linus Torvalds --- fs/sysfs/dir.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index b197016bbfbe..f281cc6584b0 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -783,6 +783,7 @@ int sysfs_rename_dir(struct kobject * kobj, const char *new_name) old_dentry = sysfs_get_dentry(sd); if (IS_ERR(old_dentry)) { error = PTR_ERR(old_dentry); + old_dentry = NULL; goto out; } @@ -850,6 +851,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj) old_dentry = sysfs_get_dentry(sd); if (IS_ERR(old_dentry)) { error = PTR_ERR(old_dentry); + old_dentry = NULL; goto out; } old_parent = old_dentry->d_parent; @@ -857,6 +859,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj) new_parent = sysfs_get_dentry(new_parent_sd); if (IS_ERR(new_parent)) { error = PTR_ERR(new_parent); + new_parent = NULL; goto out; } @@ -880,7 +883,6 @@ again: error = 0; d_add(new_dentry, NULL); d_move(old_dentry, new_dentry); - dput(new_dentry); /* Remove from old parent's list and insert into new parent's list. */ sysfs_unlink_sibling(sd); -- cgit v1.2.2