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| author | Miklos Szeredi <mszeredi@redhat.com> | 2018-07-24 15:01:55 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-08-03 16:03:32 -0400 |
| commit | e950564b97fd0f541b02eb207685d0746f5ecf29 (patch) | |
| tree | 48519b6c40bc193c70f8b8e60849da7c57f50226 /fs/inode.c | |
| parent | a6cbedfa8783b42b9272c05297865bdb501005cb (diff) | |
| download | linux-e950564b97fd0f541b02eb207685d0746f5ecf29.tar.bz2 | |
vfs: don't evict uninitialized inode
iput() ends up calling ->evict() on new inode, which is not yet initialized
by owning fs. So use destroy_inode() instead.
Add to sb->s_inodes list only if inode is not in I_CREATING state (meaning
that it wasn't allocated with new_inode(), which already does the
insertion).
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 80ea09a002bf ("vfs: factor out inode_insert5()")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/inode.c b/fs/inode.c index 6cd2e7ba9f4d..e44a97584158 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1050,6 +1050,7 @@ struct inode *inode_insert5(struct inode *inode, unsigned long hashval, { struct hlist_head *head = inode_hashtable + hash(inode->i_sb, hashval); struct inode *old; + bool creating = inode->i_state & I_CREATING; again: spin_lock(&inode_hash_lock); @@ -1083,6 +1084,8 @@ again: inode->i_state |= I_NEW; hlist_add_head(&inode->i_hash, head); spin_unlock(&inode->i_lock); + if (!creating) + inode_sb_list_add(inode); unlock: spin_unlock(&inode_hash_lock); @@ -1117,12 +1120,13 @@ struct inode *iget5_locked(struct super_block *sb, unsigned long hashval, struct inode *inode = ilookup5(sb, hashval, test, data); if (!inode) { - struct inode *new = new_inode(sb); + struct inode *new = alloc_inode(sb); if (new) { + new->i_state = 0; inode = inode_insert5(new, hashval, test, set, data); if (unlikely(inode != new)) - iput(new); + destroy_inode(new); } } return inode; |