UBUNTU: Start new release

Ignore: yes
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: (no-up) trace: add trace events for open(), exec() and uselib()

BugLink: http://bugs.launchpad.net/bugs/1194127

This patch uses TRACE_EVENT to add tracepoints for the open(),
exec() and uselib() syscalls so that ureadahead can cheaply trace
the boot sequence to determine what to read to speed up the next.

It's not upstream because it will need to be rebased onto the syscall
trace events whenever that gets merged, and is a stop-gap.

Signed-off-by: Scott James Remnant <scott@ubuntu.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Andy Whitcroft <andy.whitcroft@canonical.com>
[apw@canonical.com: ported for 3.4]
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: apparmor: fix unix domain sockets to be mediated on connection

BugLink: http://bugs.launchpad.net/bugs/1208988

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: apparmor: allocate path lookup buffers during init

BugLink: http://bugs.launchpad.net/bugs/1208988
dependency of: fix unix domain sockets to be mediated on connection
               needed to fix sleep in atomic context

Dynamically allocating buffers to store the path lookup slows mediation
down, and may require being able to sleep or accept failure of buffer
allocation. Handling fd inheritance during committing_creds, and unix
domain sockets can't fail nor can it sleep to do an allocation, so it
requires having preallocated buffers.

So add support for preallocated buffers and convert everything that
can be to use them.

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: apparmor: fix memleak of the profile hash

BugLink: http://bugs.launchpad.net/bugs/1235523

This fixes the following kmemleak trace:
unreferenced object 0xffff8801e8c35680 (size 32):
  comm "apparmor_parser", pid 691, jiffies 4294895667 (age 13230.876s)
  hex dump (first 32 bytes):
    e0 d3 4e b5 ac 6d f4 ed 3f cb ee 48 1c fd 40 cf  ..N..m..?..H..@.
    5b cc e9 93 00 00 00 00 00 00 00 00 00 00 00 00  [...............
  backtrace:
    [<ffffffff817a97ee>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff811ca9f3>] __kmalloc+0x103/0x290
    [<ffffffff8138acbc>] aa_calc_profile_hash+0x6c/0x150
    [<ffffffff8138074d>] aa_unpack+0x39d/0xd50
    [<ffffffff8137eced>] aa_replace_profiles+0x3d/0xd80
    [<ffffffff81376937>] profile_replace+0x37/0x50
    [<ffffffff811e9f2d>] vfs_write+0xbd/0x1e0
    [<ffffffff811ea96c>] SyS_write+0x4c/0xa0
    [<ffffffff817ccb1d>] system_call_fastpath+0x1a/0x1f
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: apparmor: fix memleak of replacedby struct

BugLink: http://bugs.launchpad.net/bugs/1235973

This fixes the following kmemleak trace:
unreferenced object 0xffff8800245476d8 (size 16):
  comm "apparmor_parser", pid 14163, jiffies 4295196456 (age 3312.192s)
  hex dump (first 16 bytes):
    01 00 00 00 00 00 00 00 30 00 89 3d 00 88 ff ff  ........0..=....
  backtrace:
    [<ffffffff817a99ae>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff811c98b6>] kmem_cache_alloc_trace+0xe6/0x260
    [<ffffffff81386d97>] aa_alloc_replacedby+0x27/0x80
    [<ffffffff8137f1fc>] aa_replace_profiles+0x48c/0xd80
    [<ffffffff813769ea>] profile_load+0x3a/0x60
    [<ffffffff811e9f2d>] vfs_write+0xbd/0x1e0
    [<ffffffff811ea96c>] SyS_write+0x4c/0xa0
    [<ffffffff817cccdd>] system_call_fastpath+0x1a/0x1f
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: SAUCE: apparmor: fix bad lock balance when introspecting policy

BugLink: http://bugs.launchpad.net/bugs/1235977

The profile introspection seq file has a locking bug when policy is viewed
from a virtual root (task in a policy namespace, introspection from the
real root is not affected).

The test for root
    while (parent) {
is correct for the real root, but incorrect for tasks in a policy namespace.
This allows the task to walk backup the policy tree past its virtual root
causing it to be unlocked before the virtual root should be in the p_stop
fn.

This results in the following lockdep back trace:
[   78.479744] [ BUG: bad unlock balance detected! ]
[   78.479792] 3.11.0-11-generic #17 Not tainted
[   78.479838] -------------------------------------
[   78.479885] grep/2223 is trying to release lock (&ns->lock) at:
[   78.479952] [<ffffffff817bf3be>] mutex_unlock+0xe/0x10
[   78.480002] but there are no more locks to release!
[   78.480037]
[   78.480037] other info that might help us debug this:
[   78.480037] 1 lock held by grep/2223:
[   78.480037]  #0:  (&p->lock){+.+.+.}, at: [<ffffffff812111bd>] seq_read+0x3d/0x3d0
[   78.480037]
[   78.480037] stack backtrace:
[   78.480037] CPU: 0 PID: 2223 Comm: grep Not tainted 3.11.0-11-generic #17
[   78.480037] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   78.480037]  ffffffff817bf3be ffff880007763d60 ffffffff817b97ef ffff8800189d2190
[   78.480037]  ffff880007763d88 ffffffff810e1c6e ffff88001f044730 ffff8800189d2190
[   78.480037]  ffffffff817bf3be ffff880007763e00 ffffffff810e5bd6 0000000724fe56b7
[   78.480037] Call Trace:
[   78.480037]  [<ffffffff817bf3be>] ? mutex_unlock+0xe/0x10
[   78.480037]  [<ffffffff817b97ef>] dump_stack+0x54/0x74
[   78.480037]  [<ffffffff810e1c6e>] print_unlock_imbalance_bug+0xee/0x100
[   78.480037]  [<ffffffff817bf3be>] ? mutex_unlock+0xe/0x10
[   78.480037]  [<ffffffff810e5bd6>] lock_release_non_nested+0x226/0x300
[   78.480037]  [<ffffffff817bf2fe>] ? __mutex_unlock_slowpath+0xce/0x180
[   78.480037]  [<ffffffff817bf3be>] ? mutex_unlock+0xe/0x10
[   78.480037]  [<ffffffff810e5d5c>] lock_release+0xac/0x310
[   78.480037]  [<ffffffff817bf2b3>] __mutex_unlock_slowpath+0x83/0x180
[   78.480037]  [<ffffffff817bf3be>] mutex_unlock+0xe/0x10
[   78.480037]  [<ffffffff81376c91>] p_stop+0x51/0x90
[   78.480037]  [<ffffffff81211408>] seq_read+0x288/0x3d0
[   78.480037]  [<ffffffff811e9d9e>] vfs_read+0x9e/0x170
[   78.480037]  [<ffffffff811ea8cc>] SyS_read+0x4c/0xa0
[   78.480037]  [<ffffffff817ccc9d>] system_call_fastpath+0x1a/0x1f

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
UBUNTU: Ubuntu-manta-3.4.0-4.19

Signed-off-by: Andy Whitcroft <apw@canonical.com>