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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-09 15:53:24 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-09 15:57:20 -0500 |
| commit | 94bf608a18fa4421315275a81c5489734599297a (patch) | |
| tree | 69b0022e0f47a5af7888c7e97459302373bfa338 | |
| parent | 8fdd8c49fe50394fef3e193db27222cb03c2b212 (diff) | |
| download | linux-3.10-94bf608a18fa4421315275a81c5489734599297a.tar.gz linux-3.10-94bf608a18fa4421315275a81c5489734599297a.tar.bz2 linux-3.10-94bf608a18fa4421315275a81c5489734599297a.zip | |
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 <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/ext4/super.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 64e2529ae9b..ed3ce82e2de 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3733,10 +3733,12 @@ no_journal: } 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 @@ no_journal: 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 @@ cantfind_ext4: 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: |