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| author | Tejun Heo <htejun@gmail.com> | 2008-01-16 12:10:53 +0900 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-01-16 09:54:03 -0800 |
| commit | 456ef1553cb2b06729d64c1d1f0f2bda34e9b201 (patch) | |
| tree | 4ad211cbaff6056d9f1c9aded2d24e83b1641c31 | |
| parent | e49452c67703d3647467d65275fb893589384fed (diff) | |
| download | linux-456ef1553cb2b06729d64c1d1f0f2bda34e9b201.tar.gz linux-456ef1553cb2b06729d64c1d1f0f2bda34e9b201.tar.bz2 linux-456ef1553cb2b06729d64c1d1f0f2bda34e9b201.zip | |
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 <htejun@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/sysfs/dir.c | 4 |
1 files changed, 3 insertions, 1 deletions
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); |