Re: 2.6.22-rc6(mm1) Unable to handle kernel NULL pointer dereference - git-bisect result

[Ulrich Drepper <drepper@redhat.com>]

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Linus Torvalds wrote:
> notify_change() does *not* do permission checks for 
> ATTR_CTIME/MTIME/ATIME.

Then I don't understand

        /* Check for setting the inode time. */
        if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
                if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
                        goto error;
        }

in inode_change_ok.  This seems to me exactly like the check needed.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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