What's the status of 87b47932 patch - mnt: Implicitly add MNT_NODEV on remount as we do on mount
Eric W. Biederman
ebiederm at xmission.com
Sat Nov 29 23:04:03 UTC 2014
joeyli <jlee at suse.com> writes:
> Hi Eric,
>
> Sorry for bother you. I saw your patch:
> mnt: Implicitly add MNT_NODEV on remount as we do on mount
>
> Already commited in linux-next:
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/fs/namespace.c?id=87b47932f40a11280584bce260cbdb3b5f9e8b7d
>
> But, I didn't see this patch show in v3.18-rc kernel in Linus's git tree.
> What's the status of 87b47932 patch? Does there have regression cases it
> could not be merged to v3.18 kernel?
The patch actually breaks remounting filesystems that did not have
MNT_NODEV set when theny were mounted.
The primary issue is that the bug hit at a very inopportune time in my
life (just before kernel summit) after which I had a vacation planned
and after that I had some serious job hunting and moving to do.
Now I am busily trying to catch up on my queue and these long delayed
bug fixes are the next issue.
If folks can review/test the current version of the patch (to follow in
a moment) I would appreciate it. Based on previous testing unless I
have a typo what I expect to see is:
lxc - b0rked. The old versions of lxc must be broken to fix the
security issue.
libvirt-lxc - fixed.
Andy's thing - fixed.
Any comments on the next user namespace breaking security fix that is
being finalized would also be appreciated.
Eric
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