From: Al Viro <viro-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
To: Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: Andrey Vagin <avagin-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>,
Miklos Szeredi <miklos-sUDqSbJrdHQHWmgEVkV9KA@public.gmane.org>,
Richard Weinberger <richard-/L3Ra7n9ekc@public.gmane.org>,
Linux Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>,
"J. Bruce Fields"
<bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>,
linux-fsdevel
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Jann Horn <jann-XZ1E9jl8jIdeoWH0uzbU5w@public.gmane.org>,
Willy Tarreau <w@1wt.eu>
Subject: Re: [PATCH review 0/7] Bind mount escape fixes
Date: Sun, 16 Aug 2015 03:12:09 +0100 [thread overview]
Message-ID: <20150816021209.GI14139@ZenIV.linux.org.uk> (raw)
In-Reply-To: <CA+55aFx2s7TrmPKviKnFL0nGRZDHuCajW_UO02EnF+CsJY2-4w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Sat, Aug 15, 2015 at 03:47:50PM -0700, Linus Torvalds wrote:
> So the cost I worry about is not the CPU cost, but the complexity and
> correctness. If anything goes subtly wrong, the end result is going to
> be some very very subtle bugs.
>
> And personally, I'd be much happier with something that is a bit more
> straightforward, even if it makes ".." lookup slower. Especially since
> I think we can limit the costs to fairly obvious cases (ie only for
> partial bind mounts). Keep the code more straightforward, and *if* we
> ever see the cost of dentry traversal
>
> But it's up to Al, I think.
>
> Al, comments?
I think you are underestimating the frequency of .. traversals. Any build
process that creates relative symlinks will be hitting it all the time,
for one thing. And less-than-entire-fs mounts are not something pathological -
I've got quite a few here, things like container setups often create such
beasts, etc. Not to mention that things like NFSv4 will often look like such
partial mounts, BTW.
I really don't understand why the hell do we need *anything* complicated
around __d_move() callers - just take sodding spinlock of mount_lock in
the (few) callers around rename_lock, and that's it. No need for anything
subtle and brittle.
Redoing the locking in d_splice_alias() simply doesn't belong anywhere near
that work.
Basically, all places where we change tree topology go through __d_move()
(and take rename_lock around it). There are very few of those. And we
can find and taint affected mounts quite easily - I think we all agree that
beginning of that series looks sane (locating mounts by mnt_root), right?
Let's just add "mount_lock should be held read-exclusive by all callers of
__d_move()" and do the find-and-taint logics from
dentry_lock_for_move(). Move these
BUG_ON(d_ancestor(dentry, target));
BUG_ON(d_ancestor(target, dentry));
into dentry_lock_for_move(), while we are at it. And have it begin with
finding the last common ancestor of dentry and target. Which turns those
checks into ancestor == dentry and ancestor == target... Then we need to
taint everything with root being an ancestor of dentry, but not an ancestor
of target. Which is trivial with LCA already found. For exchange case we
need to do that both for dentry and target, of course. That's it. After that
we just use that taint instead of "is it a partial?" in .. handling.
next prev parent reply other threads:[~2015-08-16 2:12 UTC|newest]
Thread overview: 240+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-02 21:42 [PATCH review 0/9] Call for testing and review of mount detach fixes Eric W. Biederman
2015-01-02 21:42 ` Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 2/9] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 3/9] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
[not found] ` <871tncuaf6.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-02 21:52 ` [PATCH review 1/9] mnt: Improve the umount_tree flags Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 2/9] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 3/9] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 4/9] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 5/9] mnt: Delay removal from the mount hash Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 6/9] mnt: Factor out __detach_mnt from detach_mnt Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 7/9] mnt: Simplify umount_tree Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 8/9] mnt: Remove redundant NULL tests in namespace_unlock Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 9/9] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
2015-01-05 20:45 ` [PATCH review 0/11 Call for testing and review of mount detach fixes (take 2) Eric W. Biederman
[not found] ` <87mw5xq7lt.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-05 20:46 ` [PATCH review 01/11] mnt: Improve the umount_tree flags Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 02/11] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 03/11] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 04/11] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 05/11] mnt: Delay removal from the mount hash Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 06/11] mnt: Factor out __detach_mnt from detach_mnt Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 07/11] mnt: Simplify umount_tree Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 08/11] mnt: Remove redundant NULL tests in namespace_unlock Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 09/11] mnt: On an unmount propagate clearing of MNT_LOCKED Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 10/11] mnt: Don't propagate unmounts to locked mounts Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 11/11] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
2015-04-03 1:53 ` [PATCH review 0/19] Locked mount and loopback mount fixes Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 02/11] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 03/11] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 04/11] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 06/11] mnt: Factor out __detach_mnt from detach_mnt Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 07/11] mnt: Simplify umount_tree Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 08/11] mnt: Remove redundant NULL tests in namespace_unlock Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 09/11] mnt: On an unmount propagate clearing of MNT_LOCKED Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 10/11] mnt: Don't propagate unmounts to locked mounts Eric W. Biederman
2015-01-05 20:46 ` [PATCH review 11/11] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
[not found] ` <1420490787-14387-11-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-01-07 18:43 ` Al Viro
2015-01-07 18:43 ` Al Viro
[not found] ` <20150107184334.GZ22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-07 19:28 ` Al Viro
[not found] ` <20150107192807.GA22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-07 19:53 ` Eric W. Biederman
2015-01-07 19:30 ` Eric W. Biederman
2015-01-07 19:30 ` Eric W. Biederman
[not found] ` <87h9w2gzht.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-07 20:52 ` Al Viro
[not found] ` <20150107205239.GB22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-07 21:51 ` Eric W. Biederman
2015-01-08 0:22 ` Al Viro
2015-01-08 3:02 ` Al Viro
[not found] ` <20150108030229.GD22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-08 3:11 ` Al Viro
[not found] ` <20150108002227.GC22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-08 3:02 ` Al Viro
2015-01-08 22:32 ` Al Viro
[not found] ` <20150108223212.GF22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-09 20:31 ` Al Viro
2015-01-09 20:31 ` Al Viro
2015-01-09 21:30 ` Eric W. Biederman
[not found] ` <87k30vwskd.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-09 22:17 ` Al Viro
[not found] ` <20150109221715.GN22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-09 22:25 ` Eric W. Biederman
[not found] ` <20150109203126.GI22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-09 21:30 ` Eric W. Biederman
2015-01-10 5:32 ` Eric W. Biederman
[not found] ` <87h9vzryio.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-10 5:51 ` Al Viro
[not found] ` <20150110055148.GY22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-11 2:00 ` Al Viro
2015-01-16 18:29 ` Eric W. Biederman
[not found] ` <20150111020030.GF22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-11 2:50 ` Al Viro
2015-01-16 18:29 ` Eric W. Biederman
[not found] ` <87iogi8dka.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-08 0:22 ` Al Viro
2015-04-03 1:53 ` [PATCH review 0/19] Locked mount and loopback mount fixes Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 01/19] mnt: Use hlist_move_list in namespace_unlock Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 02/19] mnt: Improve the umount_tree flags Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 03/19] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 04/19] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 05/19] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 06/19] mnt: Delay removal from the mount hash Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 07/19] mnt: On an unmount propagate clearing of MNT_LOCKED Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 08/19] mnt: Don't propagate unmounts to locked mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 09/19] mnt: Fail collect_mounts when applied to unmounted mounts Eric W. Biederman
2015-04-03 8:55 ` Lukasz Pawelczyk
[not found] ` <1428051353.1924.2.camel-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2015-04-09 16:39 ` Eric W. Biederman
[not found] ` <1428026183-14879-9-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-04-03 8:55 ` Lukasz Pawelczyk
[not found] ` <87a8yqou41.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-03 1:56 ` [PATCH review 01/19] mnt: Use hlist_move_list in namespace_unlock Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 02/19] mnt: Improve the umount_tree flags Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 03/19] mnt: Don't propagate umounts in __detach_mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 04/19] mnt: In umount_tree reuse mnt_list instead of mnt_hash Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 05/19] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 06/19] mnt: Delay removal from the mount hash Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 07/19] mnt: On an unmount propagate clearing of MNT_LOCKED Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 08/19] mnt: Don't propagate unmounts to locked mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 09/19] mnt: Fail collect_mounts when applied to unmounted mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 10/19] mnt: Factor out unhash_mnt from detach_mnt and umount_tree Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 11/19] mnt: Factor umount_mnt from umount_tree Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 12/19] fs_pin: Allow for the possibility that m_list or s_list go unused Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 13/19] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 14/19] mnt: Fix the error check in __detach_mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 15/19] mnt: Update detach_mounts to leave mounts connected Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 16/19] mnt: Track which mounts use a dentry as root Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 17/19] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 18/19] vfs: Handle mounts whose parents are unreachable from their mountpoint Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 19/19] vfs: Do not allow escaping from bind mounts Eric W. Biederman
2015-04-08 23:31 ` [PATCH review 0/4] Loopback mount escape fixes Eric W. Biederman
2015-04-16 23:40 ` [GIT PULL] Usernamespace related locked mount fixes Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 10/19] mnt: Factor out unhash_mnt from detach_mnt and umount_tree Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 11/19] mnt: Factor umount_mnt from umount_tree Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 12/19] fs_pin: Allow for the possibility that m_list or s_list go unused Eric W. Biederman
[not found] ` <1428026183-14879-12-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-05-11 13:36 ` Konstantin Khlebnikov
2015-04-03 1:56 ` [PATCH review 13/19] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 14/19] mnt: Fix the error check in __detach_mounts Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 15/19] mnt: Update detach_mounts to leave mounts connected Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 16/19] mnt: Track which mounts use a dentry as root Eric W. Biederman
[not found] ` <1428026183-14879-16-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-04-03 5:54 ` Al Viro
[not found] ` <20150403055449.GE889-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-04-03 10:31 ` Eric W. Biederman
2015-04-07 20:22 ` Eric W. Biederman
2015-04-07 20:22 ` Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 17/19] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 18/19] vfs: Handle mounts whose parents are unreachable from their mountpoint Eric W. Biederman
2015-04-03 1:56 ` [PATCH review 19/19] vfs: Do not allow escaping from bind mounts Eric W. Biederman
2015-04-03 6:20 ` Al Viro
[not found] ` <20150403062035.GF889-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-04-03 10:22 ` Eric W. Biederman
[not found] ` <1428026183-14879-19-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-04-03 6:20 ` Al Viro
2015-04-08 23:31 ` [PATCH review 0/4] Loopback mount escape fixes Eric W. Biederman
2015-04-08 23:33 ` [PATCH review 3/4] vfs: Handle mounts whose parents are unreachable from their mountpoint Eric W. Biederman
2015-04-08 23:34 ` [PATCH review 4/4] vfs: Do not allow escaping from bind mounts Eric W. Biederman
[not found] ` <87iod68aa3.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-09 13:06 ` Jann Horn
2015-04-09 23:22 ` Al Viro
2015-04-09 13:06 ` Jann Horn
[not found] ` <20150409130601.GA22250-J1fxOzX/cBvk1uMJSBkQmQ@public.gmane.org>
2015-04-09 16:52 ` Eric W. Biederman
2015-04-09 23:22 ` Al Viro
2015-04-10 2:51 ` Eric W. Biederman
[not found] ` <874moo1ysg.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-10 3:14 ` Al Viro
2015-04-10 3:14 ` Al Viro
[not found] ` <20150409232212.GX889-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-04-10 2:51 ` Eric W. Biederman
2015-04-13 12:18 ` [PATCH review 0/4] Loopback mount escape fixes Miklos Szeredi
[not found] ` <CAELBmZBCCC1dspo4rPkFfh3c6RZBUYAZpz0tbUSukcf9att7Cw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-24 20:39 ` Eric W. Biederman
2015-07-24 20:39 ` Eric W. Biederman
[not found] ` <874moq9oyb.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-08 23:32 ` [PATCH review 1/4] mnt: Track which mounts use a dentry as root Eric W. Biederman
2015-04-08 23:32 ` [PATCH review 2/4] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
[not found] ` <87sica8ac5.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-09 23:16 ` Al Viro
[not found] ` <20150409231636.GW889-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-04-10 2:24 ` Eric W. Biederman
2015-04-08 23:33 ` [PATCH review 3/4] vfs: Handle mounts whose parents are unreachable from their mountpoint Eric W. Biederman
2015-04-08 23:34 ` [PATCH review 4/4] vfs: Do not allow escaping from bind mounts Eric W. Biederman
2015-04-09 19:01 ` [PATCH review 0/4] Loopback mount escape fixes Eric W. Biederman
2015-04-09 19:12 ` Al Viro
2015-04-09 19:14 ` Eric W. Biederman
[not found] ` <20150409191232.GV889-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-04-09 19:14 ` Eric W. Biederman
[not found] ` <87egnt5dok.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-09 19:12 ` Al Viro
2015-04-13 12:18 ` Miklos Szeredi
2015-08-03 21:25 ` [PATCH review 0/6] Bind " Eric W. Biederman
2015-08-03 21:26 ` [PATCH review 1/6] mnt: Track which mounts use a dentry as root Eric W. Biederman
2015-08-07 10:46 ` Nikolay Borisov
[not found] ` <55C48C94.6050804-6AxghH7DbtA@public.gmane.org>
2015-08-07 15:43 ` Eric W. Biederman
2015-08-07 15:43 ` Eric W. Biederman
[not found] ` <87vbcw9i8g.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-07 10:46 ` Nikolay Borisov
[not found] ` <871tfkawu9.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-03 21:26 ` Eric W. Biederman
2015-08-03 21:26 ` [PATCH review 2/6] dcache: Handle escaped paths in prepend_path Eric W. Biederman
2015-08-03 21:27 ` [PATCH review 3/6] dcache: Implement d_common_ancestor Eric W. Biederman
2015-08-03 21:27 ` [PATCH review 4/6] mnt: Track when a directory escapes a bind mount Eric W. Biederman
2015-08-03 21:30 ` [PATCH review 5/6] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-08-03 21:30 ` [PATCH review 6/6] vfs: Cache the results of path_connected Eric W. Biederman
2015-08-05 3:14 ` [PATCH review 7/6] vfs: Make mnt_escape_count 64bit Eric W. Biederman
2015-08-03 21:27 ` [PATCH review 4/6] mnt: Track when a directory escapes a bind mount Eric W. Biederman
[not found] ` <87egjk9i61.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-10 4:36 ` Al Viro
[not found] ` <20150810043637.GC14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-10 4:43 ` Al Viro
2015-08-14 4:10 ` Eric W. Biederman
2015-08-14 4:10 ` Eric W. Biederman
[not found] ` <877foymrwt.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-14 4:29 ` [PATCH review 0/8] Bind mount escape fixes Eric W. Biederman
2015-08-14 4:30 ` [PATCH review 1/8] dcache: Handle escaped paths in prepend_path Eric W. Biederman
2015-08-14 4:30 ` [PATCH review 2/8] dcache: Reduce the scope of i_lock in d_splice_alias Eric W. Biederman
[not found] ` <87wpwyjxwc.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-14 4:30 ` [PATCH review 1/8] dcache: Handle escaped paths in prepend_path Eric W. Biederman
2015-08-14 4:30 ` [PATCH review 2/8] dcache: Reduce the scope of i_lock in d_splice_alias Eric W. Biederman
2015-08-14 4:31 ` [PATCH review 3/8] dcache: Clearly separate the two directory rename cases " Eric W. Biederman
2015-08-14 4:32 ` [PATCH review 4/8] mnt: Track which mounts use a dentry as root Eric W. Biederman
2015-08-14 4:33 ` [PATCH review 5/8] dcache: Implement d_common_ancestor Eric W. Biederman
2015-08-14 4:34 ` [PATCH review 6/8] dcache: Only read d_flags once is d_is_dir Eric W. Biederman
2015-08-14 4:35 ` [PATCH review 7/8] mnt: Track when a directory escapes a bind mount Eric W. Biederman
2015-08-14 4:36 ` [PATCH review 8/8] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-08-14 4:31 ` [PATCH review 3/8] dcache: Clearly separate the two directory rename cases in d_splice_alias Eric W. Biederman
[not found] ` <87fv3mjxsc.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-15 6:16 ` Al Viro
[not found] ` <20150815061617.GG14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-15 18:25 ` Eric W. Biederman
[not found] ` <874mk08l3g.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-15 18:35 ` [PATCH review 0/7] Bind mount escape fixes Eric W. Biederman
2015-08-15 18:36 ` [PATCH review 1/7] dcache: Handle escaped paths in prepend_path Eric W. Biederman
2015-08-15 18:36 ` [PATCH review 2/7] dcache: Reduce the scope of i_lock in d_splice_alias Eric W. Biederman
[not found] ` <87a8ts763c.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-15 18:36 ` [PATCH review 1/7] dcache: Handle escaped paths in prepend_path Eric W. Biederman
2015-08-15 18:36 ` [PATCH review 2/7] dcache: Reduce the scope of i_lock in d_splice_alias Eric W. Biederman
2015-08-15 18:37 ` [PATCH review 3/7] mnt: Track which mounts use a dentry as root Eric W. Biederman
2015-08-15 18:37 ` [PATCH review 4/7] dcache: Implement d_common_ancestor Eric W. Biederman
2015-08-15 18:38 ` [PATCH review 5/7] dcache: Only read d_flags once in d_is_dir Eric W. Biederman
2015-08-15 19:36 ` [PATCH review 0/7] Bind mount escape fixes Linus Torvalds
2015-08-15 18:37 ` [PATCH review 4/7] dcache: Implement d_common_ancestor Eric W. Biederman
2015-08-15 19:36 ` [PATCH review 0/7] Bind mount escape fixes Linus Torvalds
[not found] ` <CA+55aFzMuCn33yK71HoKnj1hr8=ac_Y-vfE5mM8h4f3YJeGKvg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-08-15 19:48 ` Linus Torvalds
[not found] ` <CA+55aFyeu-p_3eJQCLM0TDuLYvo10mx379FaCFq7Z103RgKvVA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-08-15 21:07 ` Eric W. Biederman
[not found] ` <E2AECA7F-ED57-4FCD-A4C0-8C7C4B860FB6-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-08-15 22:47 ` Linus Torvalds
[not found] ` <CA+55aFx2s7TrmPKviKnFL0nGRZDHuCajW_UO02EnF+CsJY2-4w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-08-16 0:59 ` Eric W. Biederman
[not found] ` <87bne82glg.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-16 1:27 ` [PATCH] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-08-17 3:56 ` NeilBrown
[not found] ` <87tws010r2.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-17 3:56 ` NeilBrown
2015-08-16 2:12 ` Al Viro [this message]
[not found] ` <20150816021209.GI14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-16 2:25 ` [PATCH review 0/7] Bind mount escape fixes Linus Torvalds
2015-08-16 2:25 ` Linus Torvalds
[not found] ` <CA+55aFy3pzEY=4dfd_PX-Og_b7fqrG1rDniOqehBfQhXb=Cg9A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-08-16 4:53 ` Al Viro
[not found] ` <20150816045322.GJ14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-16 6:22 ` Eric W. Biederman
2015-08-16 6:55 ` Al Viro
[not found] ` <20150816065503.GL14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-16 7:04 ` Al Viro
2015-08-16 11:33 ` Eric W. Biederman
[not found] ` <87bne7piwu.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-21 7:51 ` Al Viro
2015-08-21 15:27 ` Eric W. Biederman
[not found] ` <20150821075105.GF18890-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-21 15:27 ` Eric W. Biederman
[not found] ` <87fv3ju4zy.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-16 6:55 ` Al Viro
2015-08-16 11:51 ` Eric W. Biederman
2015-08-16 22:29 ` Willy Tarreau
[not found] ` <87egj3moxm.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-16 22:29 ` Willy Tarreau
2015-08-15 18:39 ` [PATCH review 6/7] mnt: Track when a directory escapes a bind mount Eric W. Biederman
2015-08-15 18:39 ` [PATCH review 7/7] vfs: Test for and handle paths that are unreachable from their mnt_root Eric W. Biederman
2015-08-15 18:39 ` Eric W. Biederman
2015-08-03 21:30 ` [PATCH review 5/6] " Eric W. Biederman
[not found] ` <878u9s9i1d.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-10 4:38 ` Al Viro
[not found] ` <20150810043814.GD14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-10 19:34 ` Eric W. Biederman
2015-08-03 21:30 ` [PATCH review 6/6] vfs: Cache the results of path_connected Eric W. Biederman
[not found] ` <8738009i0h.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-04 11:52 ` Andrew Vagin
2015-08-04 11:52 ` Andrew Vagin
[not found] ` <20150804115215.GA317-wo1vFcy6AUs@public.gmane.org>
2015-08-04 17:41 ` Eric W. Biederman
2015-08-04 19:44 ` J. Bruce Fields
2015-08-04 22:58 ` Eric W. Biederman
[not found] ` <874mkey824.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-05 15:59 ` J. Bruce Fields
[not found] ` <20150805155948.GD17797-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-08-05 16:28 ` Eric W. Biederman
[not found] ` <878u9pwvg8.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-28 19:43 ` J. Bruce Fields
2015-08-28 19:45 ` J. Bruce Fields
[not found] ` <20150828194540.GF10468-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-08-31 21:17 ` Eric W. Biederman
[not found] ` <87k2sb88ev.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-09-01 14:46 ` J. Bruce Fields
2015-09-01 18:00 ` Eric W. Biederman
[not found] ` <877foavx3f.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-09-01 18:11 ` J. Bruce Fields
2015-09-01 18:11 ` J. Bruce Fields
[not found] ` <20150901144632.GA32692-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-09-01 18:00 ` Eric W. Biederman
[not found] ` <20150828194302.GE10468-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-08-28 19:45 ` J. Bruce Fields
[not found] ` <20150804194447.GB6664-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-08-04 22:58 ` Eric W. Biederman
[not found] ` <871tfj0x4j.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-08-04 19:44 ` J. Bruce Fields
2015-04-16 23:40 ` [GIT PULL] Usernamespace related locked mount fixes Eric W. Biederman
[not found] ` <87383z1w1v.fsf_-_-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-04-16 23:42 ` Eric W. Biederman
2015-04-16 23:42 ` Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 4/9] mnt: Add MNT_UMOUNT flag Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 5/9] mnt: Delay removal from the mount hash Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 6/9] mnt: Factor out __detach_mnt from detach_mnt Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 7/9] mnt: Simplify umount_tree Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 8/9] mnt: Remove redundant NULL tests in namespace_unlock Eric W. Biederman
2015-01-02 21:52 ` [PATCH review 9/9] mnt: Honor MNT_LOCKED when detaching mounts Eric W. Biederman
[not found] ` <1420235574-15177-9-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2015-01-03 2:27 ` Eric W. Biederman
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