luck/tmp_suning_uos_patched
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[PATCH] debugfs inode leak

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Looking at the reiser4 crash, I found a leak in debugfs. In
debugfs_mknod(), we create the inode before checking if the dentry
already has one attached. We don't free it if that is the case.

These bugs happen quite often, I'm starting to think we should disallow
such coding in CodingStyle.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jens Axboe 2006-06-08 10:26:39 +02:00 committed by Linus Torvalds
parent bc1c116974
commit 71601e2b33
1 changed files with 2 additions and 1 deletions
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3
fs/debugfs/inode.c
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@ -67,12 +67,13 @@ static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t d
static int debugfs_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t dev)
{
struct inode *inode = debugfs_get_inode(dir->i_sb, mode, dev);
struct inode *inode;
int error = -EPERM;
if (dentry->d_inode)
return -EEXIST;
inode = debugfs_get_inode(dir->i_sb, mode, dev);
if (inode) {
d_instantiate(dentry, inode);
dget(dentry);