From 94bf608a18fa4421315275a81c5489734599297a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 9 Jan 2012 15:53:24 -0500 Subject: [PATCH] ext4: fix failure exits a) leaking root dentry is bad b) in case of failed ext4_mb_init() we don't want to do ext4_mb_release() c) OTOH, in the same case we *do* want ext4_ext_release() Signed-off-by: Al Viro --- fs/ext4/super.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 64e2529ae9bb..ed3ce82e2de4 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3733,10 +3733,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { ext4_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck"); + iput(root); goto failed_mount4; } sb->s_root = d_alloc_root(root); if (!sb->s_root) { + iput(root); ext4_msg(sb, KERN_ERR, "get root dentry failed"); ret = -ENOMEM; goto failed_mount4; @@ -3773,7 +3775,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (err) { ext4_msg(sb, KERN_ERR, "failed to initialize system " "zone (%d)", err); - goto failed_mount4; + goto failed_mount4a; } ext4_ext_init(sb); @@ -3830,13 +3832,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) failed_mount7: ext4_unregister_li_request(sb); failed_mount6: - ext4_ext_release(sb); -failed_mount5: ext4_mb_release(sb); +failed_mount5: + ext4_ext_release(sb); ext4_release_system_zone(sb); -failed_mount4: - iput(root); +failed_mount4a: + dput(sb->s_root); sb->s_root = NULL; +failed_mount4: ext4_msg(sb, KERN_ERR, "mount failed"); destroy_workqueue(EXT4_SB(sb)->dio_unwritten_wq); failed_mount_wq: