linux-toradex.git/include, branch v2.6.20.17

[PATCH] Keep rfcomm_dev on the list until it is freed

2007-08-25T15:24:16+00:00

This patch changes the RFCOMM TTY release process so that the TTY is kept
on the list until it is really freed. A new device flag is used to keep
track of released TTYs.

Signed-off-by: Ville Tervo 
Signed-off-by: Marcel Holtmann 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Willy Tarreau

[PATCH] Include serial_reg.h with userspace headers

2007-08-25T15:24:08+00:00

As reported by Gustavo de Nardin , while trying to
compile xosview (http://xosview.sourceforge.net/) with upstream kernel
headers being used you get the following errors:
serialmeter.cc:48:30: error: linux/serial_reg.h: No such file or directory
serialmeter.cc: In member function 'virtual void
SerialMeter::checkResources()':
serialmeter.cc:71: error: 'UART_LSR' was not declared in this scope
serialmeter.cc:71: error: 'UART_MSR' was not declared in this scope
...

Signed-off-by: Herton Ronaldo Krzesinski 
Cc: Gustavo de Nardin 
Cc: David Woodhouse 
Cc: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Willy Tarreau

[PATCH] Missing header include in ipt_iprange.h

2007-08-25T15:23:57+00:00

[NETFILTER]: ipt_iprange.h must #include 

ipt_iprange.h must #include  since it uses __be32.

This patch fixes kernel Bugzilla #7604.

Signed-off-by: Adrian Bunk 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Willy Tarreau

[PATCH] Fix IPCOMP crashes.

2007-08-25T15:23:56+00:00

[XFRM]: Fix crash introduced by struct dst_entry reordering

XFRM expects xfrm_dst->u.next to be same pointer as dst->next, which
was broken by the dst_entry reordering in commit 1e19e02c~, causing
an oops in xfrm_bundle_ok when walking the bundle upwards.

Kill xfrm_dst->u.next and change the only user to use dst->next instead.

Signed-off-by: Patrick McHardy 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Willy Tarreau

[PATCH] pi-futex: Fix exit races and locking problems

2007-08-15T08:02:26+00:00

1. New entries can be added to tsk->pi_state_list after task completed
   exit_pi_state_list(). The result is memory leakage and deadlocks.

2. handle_mm_fault() is called under spinlock. The result is obvious.

3. results in self-inflicted deadlock inside glibc.
   Sometimes futex_lock_pi returns -ESRCH, when it is not expected
   and glibc enters to for(;;) sleep() to simulate deadlock. This problem
   is quite obvious and I think the patch is right. Though it looks like
   each "if" in futex_lock_pi() got some stupid special case "else if". :-)

4. sometimes futex_lock_pi() returns -EDEADLK,
   when nobody has the lock. The reason is also obvious (see comment
   in the patch), but correct fix is far beyond my comprehension.
   I guess someone already saw this, the chunk:

                        if (rt_mutex_trylock(&q.pi_state->pi_mutex))
                                ret = 0;

   is obviously from the same opera. But it does not work, because the
   rtmutex is really taken at this point: wake_futex_pi() of previous
   owner reassigned it to us. My fix works. But it looks very stupid.
   I would think about removal of shift of ownership in wake_futex_pi()
   and making all the work in context of process taking lock.

From: Thomas Gleixner 

Fix 1) Avoid the tasklist lock variant of the exit race fix by adding
    an additional state transition to the exit code.

    This fixes also the issue, when a task with recursive segfaults
    is not able to release the futexes.

Fix 2) Cleanup the lookup_pi_state() failure path and solve the -ESRCH
    problem finally.

Fix 3) Solve the fixup_pi_state_owner() problem which needs to do the fixup
    in the lock protected section by using the in_atomic userspace access
    functions.

    This removes also the ugly lock drop / unqueue inside of fixup_pi_state()

Fix 4) Fix a stale lock in the error path of futex_wake_pi()

Added some error checks for verification.

The -EDEADLK problem is solved by the rtmutex fixups.

Cc: Alexey Kuznetsov 
Signed-off-by: Thomas Gleixner 
Acked-by: Ingo Molnar 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] x86_64: allocate sparsemem memmap above 4G

2007-08-15T08:02:24+00:00

On systems with huge amount of physical memory, VFS cache and memory memmap
may eat all available system memory under 4G, then the system may fail to
allocate swiotlb bounce buffer.

There was a fix for this issue in arch/x86_64/mm/numa.c, but that fix dose
not cover sparsemem model.

This patch add fix to sparsemem model by first try to allocate memmap above
4G.

Signed-off-by: Zou Nan hai 
Acked-by: Suresh Siddha 
Cc: Andi Kleen 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
[chrisw: trivial backport]
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] pci_ids: update patch for Intel ICH9M

2007-08-15T08:02:23+00:00

This patch updates the Intel ICH9M LPC Controller DID's, due to a
specification change.

Signed-off-by: Jason Gaston 
Cc: 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] make freezeable workqueues singlethread

2007-08-15T08:02:22+00:00

It is a known fact that freezeable multithreaded workqueues doesn't like
CPU_DEAD. We keep them only for the incoming CPU-hotplug rework.

Sadly, we can't just kill create_freezeable_workqueue() right now, make
them singlethread.

Signed-off-by: Oleg Nesterov 
Cc: "Rafael J. Wysocki" 
Cc: Gautham R Shenoy 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] md: Don't write more than is required of the last page of a bitmap

2007-08-15T08:02:21+00:00

It is possible that real data or metadata follows the bitmap
without full page alignment.
So limit the last write to be only the required number of bytes,
rounded up to the hard sector size of the device.

Signed-off-by: Neil Brown 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Fix AF_UNIX OOPS

2007-06-11T18:37:14+00:00

This combines two upstream commits to fix an OOPS with
AF_UNIX and SELINUX.

basically, sk->sk_socket can become null because we access
a peer socket without any locking, so it can be shut down and
released in another thread.

Commit: d410b81b4eef2e4409f9c38ef201253fbbcc7d94
[AF_UNIX]: Make socket locking much less confusing.

The unix_state_*() locking macros imply that there is some
rwlock kind of thing going on, but the implementation is
actually a spinlock which makes the code more confusing than
it needs to be.

So use plain unix_state_lock and unix_state_unlock.

Signed-off-by: David S. Miller 

Commit: 19fec3e807a487415e77113cb9dbdaa2da739836
[AF_UNIX]: Fix datagram connect race causing an OOPS.

Based upon an excellent bug report and initial patch by
Frederik Deweerdt.

The UNIX datagram connect code blindly dereferences other->sk_socket
via the call down to the security_unix_may_send() function.

Without locking 'other' that pointer can go NULL via unix_release_sock()
which does sock_orphan() which also marks the socket SOCK_DEAD.

So we have to lock both 'sk' and 'other' yet avoid all kinds of
potential deadlocks (connect to self is OK for datagram sockets and it
is possible for two datagram sockets to perform a simultaneous connect
to each other).  So what we do is have a "double lock" function similar
to how we handle this situation in other areas of the kernel.  We take
the lock of the socket pointer with the smallest address first in
order to avoid ABBA style deadlocks.

Once we have them both locked, we check to see if SOCK_DEAD is set
for 'other' and if so, drop everything and retry the lookup.

Signed-off-by: David S. Miller 
[chrisw: backport to 2.6.20]
Signed-off-by: Chris Wright