From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
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>,
Al Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@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: Sat, 15 Aug 2015 19:59:39 -0500 [thread overview]
Message-ID: <87bne82glg.fsf@x220.int.ebiederm.org> (raw)
In-Reply-To: <CA+55aFx2s7TrmPKviKnFL0nGRZDHuCajW_UO02EnF+CsJY2-4w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> (Linus Torvalds's message of "Sat, 15 Aug 2015 15:47:50 -0700")
Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> writes:
> On Sat, Aug 15, 2015 at 2:07 PM, Eric W. Biederman
> <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org> wrote:
>>
>> Yes we can compare s_root and mnt_root and only call is_subir if they don't match.
>
> Not even "is_subdir()" - for the RCU traversal case, just d_ancestor()
> should be sufficient since we'd already be in an RCU read-locked
> region and the RCU lookup checks the rename sequence number around it
> all.
We check the dentry sequence number and the mount sequence number, which
may be enough to catch a local rename but is certainly not enough to
catch what d_ancestor cares about.
Further we have the partial rcu to non-rcu walk case represented by
unlazy_walk that means we can't blithely do something that might be
wrong and only check the sequence numbers at each step.
> And d_ancestor() should really be pretty low-cost - even *if* we have
> to call it, which wouldn't even be the case for the normal situation.
>
>> At this point it is a matter of trade offs.
>>
>> If there is not an escape I do not expect my current implementation will have a measurable cost.
>> And I don't expect there will be any escapes.
>
> 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.
Fair enough. I like simple low complexity code, but I don't want to
mess up the pathname lookup fastpath.
> 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?
At the very beginning of this I got shot down by Al Viro for a simple
implementation that essentially had everything except the check for
being a bind mount. Knowing what I know now I realize it was a bit
buggy, calling d_ancestor in the rcu walk instead of d_subdir, but it
was shot down for the cpu cost. Then Al suggested the basic approach I
have taken in these patches.
As soon as I am done testing I am going to post the revised version of
my final patch that only performs is_subdir checks on bind mounts.
Then we can decide to merge whichever version of the code you and Al are
happy with.
Eric
next prev parent reply other threads:[~2015-08-16 0:59 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 [this message]
[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 ` [PATCH review 0/7] Bind mount escape fixes Al Viro
[not found] ` <20150816021209.GI14139-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-08-16 2:25 ` 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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