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authorDan Carpenter <error27@gmail.com>2009-02-15 20:02:19 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-02-15 20:02:19 -0500
commit090542641de833c6f756895fc2f139f046e298f9 (patch)
tree8a3939e4e72e5107282a5343d2cb50c29e5077a6 /fs/ext4/migrate.c
parent2acf2c261b823d9d9ed954f348b97620297a36b5 (diff)
ext4: Fix NULL dereference in ext4_ext_migrate()'s error handling
This was found through a code checker (http://repo.or.cz/w/smatch.git/). It looks like you might be able to trigger the error by trying to migrate a readonly file system. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/migrate.c')
-rw-r--r--fs/ext4/migrate.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 734abca25e3..fe64d9f7985 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -481,7 +481,7 @@ int ext4_ext_migrate(struct inode *inode)
+ 1);
if (IS_ERR(handle)) {
retval = PTR_ERR(handle);
- goto err_out;
+ return retval;
}
tmp_inode = ext4_new_inode(handle,
inode->i_sb->s_root->d_inode,
@@ -489,8 +489,7 @@ int ext4_ext_migrate(struct inode *inode)
if (IS_ERR(tmp_inode)) {
retval = -ENOMEM;
ext4_journal_stop(handle);
- tmp_inode = NULL;
- goto err_out;
+ return retval;
}
i_size_write(tmp_inode, i_size_read(inode));
/*
@@ -618,8 +617,7 @@ err_out:
ext4_journal_stop(handle);
- if (tmp_inode)
- iput(tmp_inode);
+ iput(tmp_inode);
return retval;
}