On Mon, Nov 01, 2010 at 04:08:55PM +0100, Jiri Slaby wrote:
> Stanse found that pSMBFile in cifs_ioctl and file->f_path.dentry in
> cifs_user_write are dereferenced prior their test to NULL.
file->f_path.dentry is never NULL for an opened file, neither is
file->f_path.dentry->d_inode (which cannot change for the entire
lifetime of dentry, BTW). IOW,
> - /* since the write may have blocked check these pointers again */
> - if ((file->f_path.dentry) && (file->f_path.dentry->d_inode)) {
> - struct inode *inode = file->f_path.dentry->d_inode;
in there had always been junk. So yes, losing these tests is the right
thing to do.
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