Messages in this thread | | | Date | Tue, 31 Mar 2009 07:16:15 +0100 | From | Al Viro <> | Subject | Re: Q: check_unsafe_exec() races (Was: [PATCH 2/4] fix setuid sometimes doesn't) |
| |
On Mon, Mar 30, 2009 at 03:32:35PM +0100, Hugh Dickins wrote: > > Anyway, completely untested patchset is in > > git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6.git/ execve-mess > > (the last 9 changesets of it). > > > > WARNING: that's *NOT* for merge at the moment; this is not a pull request.
> I'm looking now. Your description of what you intended sounded good. > > First impression is that there's lots of good cleanup in there, but > it's all too mixed up and misordered at present - though we have friends > who insist upon doing the cleanup first (and I usually like to work that > way too), it's going to be tiresome when backporting to 2.6.29.stable > (luckily not needed earlier, unless you've uncovered more on the way).
Yes, and worse than that; this was basically a code dump - the state at the moment when I'd been going down.
> I think your new chroot_fs_refs() should have a path_get(new_root) > just before each path_put(old_root)?
Not just before; at the time it replaces ->root or ->pwd. And yes, it's one of the brainos there.
Anyway, I've got that stuff to something reasonably-looking. See the same branch (rebased), just 5 changesets now. Have fun. Cleanups are not part of that set.
| |