@pkern-k
@pkern
@smu-u
@antarus
It just occurred to me that you might not be aware that the 3.13 *(that now has
the CONFIG_IMA) kernel available in 14.04 will be available in the update
archives for precise shortly after 14.04 release. That's less than 3 months
away.
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Hi Philipp,
12.04.4 is just the first appearance of the saucy kernel in the install media.
As soon as a package is in main, it is supported.
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Oh ok. I was under the impression that it was only supported from
12.04.4, to be released in a week or two.
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https://bugs.launchpad.net/bugs/1244627
Title:
Please enable CO
@pkern-l
linux-generic-lts-saucy is available and supported in precise.
The source base between linux-generic-lts-saucy and kernels in saucy are
built from the same sources.
As for creating a new flavor, creating additional flavors is avoided at
all cost. Each additional flavor requires additio
Also I want to make the point, even if it can possibly be discarded
quickly, that the saucy stack is, to my knowledge, not supported yet on
precise. So changes in there could be held to a different standard than
in saucy proper. But I sort of understand if you avoid divergence
between saucy's kerne
Would there be a chance to create a -ima flavor of the kernel instead of
enabling it in the stock kernel flavor? This should allow for it to go
into Trusty and into Saucy as a SRU, if I understand correctly, since it
provides a new binary package instead of modifying an existing one (no
regression
As cking noted in #4 this would cause a performance impact for ext2/3.
That alone prevents it from moving into the stable saucy kernel.
Additionally this is a significant enough change that it would not satisfy the
SRU requirements for pushing into the saucy kernel.
Please see
https://wiki.ubun
** Changed in: linux (Ubuntu Saucy)
Assignee: Chris J Arges (arges) => Dave Chiluk (chiluk)
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Title:
Please enable CONFIG_IMA in
** Changed in: linux (Ubuntu Saucy)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: linux (Ubuntu Saucy)
Importance: Undecided => Medium
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Could this be enabled in the saucy LTS backport kernel in precise as
well, please? It will take a while until the trusty kernel becomes
available there and this blocks our switch to the saucy kernel. Thanks!
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Fixed in 3.13.0-1.16
** Changed in: linux (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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Title:
Please enable CONFIG
** Also affects: linux (Ubuntu Saucy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Saucy)
Status: New => Triaged
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** Tags removed: raring
** Tags added: saucy
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Title:
Please enable CONFIG_IMA in the ubuntu kernel
Status in “linux” package in Ubu
For making sure IMA isn't enabled at boot by default, here's some
details From http://sourceforge.net/p/linux-ima/wiki/Home/
Enabling IMA
IMA was first included in the 2.6.30 kernel. For distros that enable IMA by
default in their kernels, collecting IMA measurements simply requires rebooting
th
** Changed in: linux (Ubuntu Trusty)
Status: In Progress => Fix Committed
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Title:
Please enable CONFIG_IMA in the ubuntu kern
So enabling this consumes an extra sizeof(atomic_t) bytes per inode.
Instrumenting the kernel with it enabled we see:
* To boot a system:
0.113 MB allocated + 23 x 4K slabs in iint_cache, total: 0.203 MB
consumed for ~1288 cached file entries.
* Install kernel + headers:
0.401 MB allocated +
** Also affects: linux (Ubuntu Trusty)
Importance: Medium
Assignee: Colin King (colin-king)
Status: In Progress
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Title:
Investigations and benchmarking are ongoing to confirm/deny that turning
this on without enabling is cheap enough to enable in the default
configurations.
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Colin King (c
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Tags added: kernel-da-key raring trusty
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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Moving to main linux package. Waiting for memory benchmark comparison of:
- without CONFIG_IMA
- with CONFIG_IMA
- with CONFIG_IMG + policy
** Package changed: linux-meta-lts-saucy (Ubuntu) => linux (Ubuntu)
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