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[PATCH] Fix oops in vfs_quotaon_mount() 

When quota file specified in mount options did not exist, we tried to
dereference NULL pointer later. Fix it.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Kara 2005-11-28 13:44:14 -08:00 committed by Linus Torvalds
parent 6aea114a72
commit 154f484b92
1 changed files with 6 additions and 0 deletions
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6
fs/dquot.c
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@ -1513,10 +1513,16 @@ int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
if (IS_ERR(dentry)) if (IS_ERR(dentry))
return PTR_ERR(dentry); return PTR_ERR(dentry);
if (!dentry->d_inode) {
error = -ENOENT;
goto out;
}
error = security_quota_on(dentry); error = security_quota_on(dentry);
if (!error) if (!error)
error = vfs_quota_on_inode(dentry->d_inode, type, format_id); error = vfs_quota_on_inode(dentry->d_inode, type, format_id);
out:
dput(dentry); dput(dentry);
return error; return error;
} }