Commit Graph

362488 Commits

Author SHA1 Message Date
Mark Brown af8ee69df3 Merge remote-tracking branch 'regmap/fix/async' into tmp 2013-03-31 23:27:38 +01:00
Linus Torvalds 07961ac7c0 Linux 3.9-rc5 2013-03-31 15:12:43 -07:00
Mark Brown 6d66df4109 Merge remote-tracking branch 'regmap/fix/core' into tmp 2013-03-31 23:09:22 +01:00
Mark Brown 7ff2b19359 Merge remote-tracking branch 'regmap/fix/cache' into tmp 2013-03-31 23:09:20 +01:00
Linus Torvalds 0bb44280b5 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
 "Two fixes for slave-dmaengine.

  The first one is for making slave_id value correct for dw_dmac and
  the other one fixes the endieness in DT parsing"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dw_dmac: adjust slave_id accordingly to request line base
  dmaengine: dw_dma: fix endianess for DT xlate function
2013-03-31 11:41:47 -07:00
Linus Torvalds a7b436d356 Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
 "For a some fixes for Kernel 3.9:
   - subsystem build fix when VIDEO_DEV=y, VIDEO_V4L2=m and I2C=m
   - compilation fix for arm multiarch preventing IR_RX51 to be selected
   - regression fix at bttv crop logic
   - s5p-mfc/m5mols/exynos: a few fixes for cameras on exynos hardware"

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] [REGRESSION] bt8xx: Fix too large height in cropcap
  [media] fix compilation with both V4L2 and I2C as 'm'
  [media] m5mols: Fix bug in stream on handler
  [media] s5p-fimc: Do not attempt to disable not enabled media pipeline
  [media] s5p-mfc: Fix encoder control 15 issue
  [media] s5p-mfc: Fix frame skip bug
  [media] s5p-fimc: send valid m2m ctx to fimc_m2m_job_finish
  [media] exynos-gsc: send valid m2m ctx to gsc_m2m_job_finish
  [media] fimc-lite: Fix the variable type to avoid possible crash
  [media] fimc-lite: Initialize 'step' field in fimc_lite_ctrl structure
  [media] ir: IR_RX51 only works on OMAP2
2013-03-31 11:40:33 -07:00
Linus Torvalds d299c29039 for-linus-20130331
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Merge tag 'for-linus-20130331' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Alright, this time from 10K up in the air.

  Collection of fixes that have been queued up since the merge window
  opened, hence postponed until later in the cycle.  The pull request
  contains:

   - A bunch of fixes for the xen blk front/back driver.

   - A round of fixes for the new IBM RamSan driver, fixing various
     nasty issues.

   - Fixes for multiple drives from Wei Yongjun, bad handling of return
     values and wrong pointer math.

   - A fix for loop properly killing partitions when being detached."

* tag 'for-linus-20130331' of git://git.kernel.dk/linux-block: (25 commits)
  mg_disk: fix error return code in mg_probe()
  rsxx: remove unused variable
  rsxx: enable error return of rsxx_eeh_save_issued_dmas()
  block: removes dynamic allocation on stack
  Block: blk-flush: Fixed indent code style
  cciss: fix invalid use of sizeof in cciss_find_cfgtables()
  loop: cleanup partitions when detaching loop device
  loop: fix error return code in loop_add()
  mtip32xx: fix error return code in mtip_pci_probe()
  xen-blkfront: remove frame list from blk_shadow
  xen-blkfront: pre-allocate pages for requests
  xen-blkback: don't store dev_bus_addr
  xen-blkfront: switch from llist to list
  xen-blkback: fix foreach_grant_safe to handle empty lists
  xen-blkfront: replace kmalloc and then memcpy with kmemdup
  xen-blkback: fix dispatch_rw_block_io() error path
  rsxx: fix missing unlock on error return in rsxx_eeh_remap_dmas()
  Adding in EEH support to the IBM FlashSystem 70/80 device driver
  block: IBM RamSan 70/80 error message bug fix.
  block: IBM RamSan 70/80 branding changes.
  ...
2013-03-31 11:38:59 -07:00
Paul Walmsley dbf520a9d7 Revert "lockdep: check that no locks held at freeze time"
This reverts commit 6aa9707099.

Commit 6aa9707099 ("lockdep: check that no locks held at freeze time")
causes problems with NFS root filesystems.  The failures were noticed on
OMAP2 and 3 boards during kernel init:

  [ BUG: swapper/0/1 still has locks held! ]
  3.9.0-rc3-00344-ga937536 #1 Not tainted
  -------------------------------------
  1 lock held by swapper/0/1:
   #0:  (&type->s_umount_key#13/1){+.+.+.}, at: [<c011e84c>] sget+0x248/0x574

  stack backtrace:
    rpc_wait_bit_killable
    __wait_on_bit
    out_of_line_wait_on_bit
    __rpc_execute
    rpc_run_task
    rpc_call_sync
    nfs_proc_get_root
    nfs_get_root
    nfs_fs_mount_common
    nfs_try_mount
    nfs_fs_mount
    mount_fs
    vfs_kern_mount
    do_mount
    sys_mount
    do_mount_root
    mount_root
    prepare_namespace
    kernel_init_freeable
    kernel_init

Although the rootfs mounts, the system is unstable.  Here's a transcript
from a PM test:

  http://www.pwsan.com/omap/testlogs/test_v3.9-rc3/20130317194234/pm/37xxevm/37xxevm_log.txt

Here's what the test log should look like:

  http://www.pwsan.com/omap/testlogs/test_v3.8/20130218214403/pm/37xxevm/37xxevm_log.txt

Mailing list discussion is here:

  http://lkml.org/lkml/2013/3/4/221

Deal with this for v3.9 by reverting the problem commit, until folks can
figure out the right long-term course of action.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mandeep Singh Baines <msb@chromium.org>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: <maciej.rutecki@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ben Chan <benchan@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-31 11:38:33 -07:00
Linus Torvalds 13d2080db3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "This includes the bug-fix for a >= v3.8-rc1 regression specific to
  iscsi-target persistent reservation conflict handling (CC'ed to
  stable), and a tcm_vhost patch to drop VIRTIO_RING_F_EVENT_IDX usage
  so that in-flight qemu vhost-scsi-pci device code can detect the
  proper vhost feature bits.

  Also, there are two more tcm_vhost patches still being discussed by
  MST and Asias for v3.9 that will be required for the in-flight qemu
  vhost-scsi-pci device patch to function properly, and that should
  (hopefully) be the last target fixes for this round."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix RESERVATION_CONFLICT status regression for iscsi-target special case
  tcm_vhost: Avoid VIRTIO_RING_F_EVENT_IDX feature bit
2013-03-30 13:13:05 -07:00
Mac Lin a3d9052c62 ARM: cns3xxx: fix mapping of private memory region
Since commit 0536bdf33f (ARM: move iotable mappings within the vmalloc
region), the Cavium CNS3xxx cannot boot anymore.

This is caused by the pre-defined iotable mappings is not in the vmalloc
region. This patch move the iotable mappings into the vmalloc region, and
merge the MPCore private memory region (containing the SCU, the GIC and
the TWD) as a single region.

Signed-off-by: Mac Lin <mkl0301@gmail.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Cc: stable@vger.kernel.org [v3.3+]
2013-03-30 12:05:26 -07:00
Amit Shah 9ba5c80b1a virtio: console: add locking around c_ovq operations
When multiple ovq operations are being performed (lots of open/close
operations on virtio_console fds), the __send_control_msg() function can
get confused without locking.

A simple recipe to cause badness is:
* create a QEMU VM with two virtio-serial ports
* in the guest, do
  while true;do echo abc >/dev/vport0p1;done
  while true;do echo edf >/dev/vport0p2;done

In one run, this caused a panic in __send_control_msg().  In another, I
got

   virtio_console virtio0: control-o:id 0 is not a head!

This also results repeated messages similar to these on the host:

  qemu-kvm: virtio-serial-bus: Unexpected port id 478762112 for device virtio-serial-bus.0
  qemu-kvm: virtio-serial-bus: Unexpected port id 478762368 for device virtio-serial-bus.0

Reported-by: FuXiangChun <xfu@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Reviewed-by: Asias He <asias@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
2013-03-30 14:25:46 +10:30
Amit Shah 165b1b8bbc virtio: console: rename cvq_lock to c_ivq_lock
The cvq_lock was taken for the c_ivq.  Rename the lock to make that
obvious.

We'll also add a lock around the c_ovq in the next commit, so there's no
ambiguity.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Asias He <asias@redhat.com>
Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
2013-03-30 14:23:48 +10:30
Andy Shevchenko bce95c63ef dw_dmac: adjust slave_id accordingly to request line base
On some hardware configurations we have got the request line with the offset.
The patch introduces convert_slave_id() helper for that cases. The request line
base is came from the driver data provided by the platform_device_id table.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-03-30 04:34:07 +05:30
Arnd Bergmann f73bb9b355 dmaengine: dw_dma: fix endianess for DT xlate function
As reported by Wu Fengguang's build robot tracking sparse warnings, the
dma_spec arguments in the dw_dma_xlate are already byte swapped on
little-endian platforms and must not get swapped again. This code is
currently not used anywhere, but will be used in Linux 3.10 when the
ARM SPEAr platform starts using the generic DMA DT binding.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-03-30 04:34:07 +05:30
Rafael J. Wysocki 46a1f21a67 PNP: List Rafael Wysocki as a maintainer
The Adam Belay's e-mail address in MAINTAINERS under PNP SUPPORT
is not valid any more and I started to maintain that code in the
meantime as a matter of fact, so list myself as a maintainer of it
along with Bjorn and remove the Adam's entry from it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-29 15:28:33 -07:00
Max.Nekludov@us.elster.com 14bc435ea5 ks8851: Fix interpretation of rxlen field.
According to the Datasheet (page 52):
15-12 Reserved
11-0 RXBC Receive Byte Count
This field indicates the present received frame byte size.

The code has a bug:
                 rxh = ks8851_rdreg32(ks, KS_RXFHSR);
                 rxstat = rxh & 0xffff;
                 rxlen = rxh >> 16; // BUG!!! 0xFFF mask should be applied

Signed-off-by: Max Nekludov <Max.Nekludov@us.elster.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:43:08 -04:00
Eric Dumazet 00cfec3748 net: add a synchronize_net() in netdev_rx_handler_unregister()
commit 35d48903e9 (bonding: fix rx_handler locking) added a race
in bonding driver, reported by Steven Rostedt who did a very good
diagnosis :

<quoting Steven>

I'm currently debugging a crash in an old 3.0-rt kernel that one of our
customers is seeing. The bug happens with a stress test that loads and
unloads the bonding module in a loop (I don't know all the details as
I'm not the one that is directly interacting with the customer). But the
bug looks to be something that may still be present and possibly present
in mainline too. It will just be much harder to trigger it in mainline.

In -rt, interrupts are threads, and can schedule in and out just like
any other thread. Note, mainline now supports interrupt threads so this
may be easily reproducible in mainline as well. I don't have the ability
to tell the customer to try mainline or other kernels, so my hands are
somewhat tied to what I can do.

But according to a core dump, I tracked down that the eth irq thread
crashed in bond_handle_frame() here:

        slave = bond_slave_get_rcu(skb->dev);
        bond = slave->bond; <--- BUG

the slave returned was NULL and accessing slave->bond caused a NULL
pointer dereference.

Looking at the code that unregisters the handler:

void netdev_rx_handler_unregister(struct net_device *dev)
{

        ASSERT_RTNL();
        RCU_INIT_POINTER(dev->rx_handler, NULL);
        RCU_INIT_POINTER(dev->rx_handler_data, NULL);
}

Which is basically:
        dev->rx_handler = NULL;
        dev->rx_handler_data = NULL;

And looking at __netif_receive_skb() we have:

        rx_handler = rcu_dereference(skb->dev->rx_handler);
        if (rx_handler) {
                if (pt_prev) {
                        ret = deliver_skb(skb, pt_prev, orig_dev);
                        pt_prev = NULL;
                }
                switch (rx_handler(&skb)) {

My question to all of you is, what stops this interrupt from happening
while the bonding module is unloading?  What happens if the interrupt
triggers and we have this:

        CPU0                    CPU1
        ----                    ----
  rx_handler = skb->dev->rx_handler

                        netdev_rx_handler_unregister() {
                           dev->rx_handler = NULL;
                           dev->rx_handler_data = NULL;

  rx_handler()
   bond_handle_frame() {
    slave = skb->dev->rx_handler;
    bond = slave->bond; <-- NULL pointer dereference!!!

What protection am I missing in the bond release handler that would
prevent the above from happening?

</quoting Steven>

We can fix bug this in two ways. First is adding a test in
bond_handle_frame() and others to check if rx_handler_data is NULL.

A second way is adding a synchronize_net() in
netdev_rx_handler_unregister() to make sure that a rcu protected reader
has the guarantee to see a non NULL rx_handler_data.

The second way is better as it avoids an extra test in fast path.

Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: Paul E. McKenney <paulmck@us.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:38:15 -04:00
Manish Chopra 8622315e01 MAINTAINERS: Update netxen_nic maintainers list
o Add myself to netxen_nic maintainers list

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:36:28 -04:00
Hannes Frederic Sowa 188ab1b105 atl1e: drop pci-msi support because of packet corruption
Usage of pci-msi results in corrupted dma packet transfers to the host.

Reported-by: rebelyouth <rebelyouth.hacklab@gmail.com>
Cc: Huang, Xiong <xiong@qca.qualcomm.com>
Tested-by: Christian Sünkenberg <christian.suenkenberg@student.kit.edu>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:35:16 -04:00
Vijay Subramanian cd68ddd4c2 net: fq_codel: Fix off-by-one error
Currently, we hold a max of sch->limit -1 number of packets instead of
sch->limit packets. Fix this off-by-one error.

Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:32:23 -04:00
Rob Herring e6c3827dcf net: calxedaxgmac: Wake-on-LAN fixes
WOL is broken because the magic packet status bit is getting set rather
than the enable bit. The PMT interrupt is not getting serviced because
the PMT interrupt is also enabled on the global interrupt, but not
cleared by the global interrupt and the global interrupt is higher
priority. This fixes both of these issues to get WOL working.

There's still a problem with receive after resume, but at least now we
can wake-up.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:29:35 -04:00
Rob Herring dc574f1d52 net: calxedaxgmac: fix rx ring handling when OOM
If skb allocation for the rx ring fails repeatedly, we can reach a point
were the ring is empty. In this condition, the driver is out of sync with
the h/w. While this has always been possible, the removal of the skb
recycling seems to have made triggering this problem easier.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:29:35 -04:00
Shmulik Ladkani a561cf7edf net: core: Remove redundant call to 'nf_reset' in 'dev_forward_skb'
'nf_reset' is called just prior calling 'netif_rx'.
No need to call it twice.

Reported-by: Igor Michailov <rgohita@gmail.com>
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:25:28 -04:00
Steve Glendinning 4c51e53689 smsc75xx: fix jumbo frame support
This patch enables RX of jumbo frames for LAN7500.

Previously the driver would transmit jumbo frames succesfully but
would drop received jumbo frames (incrementing the interface errors
count).

With this patch applied the device can succesfully receive jumbo
frames up to MTU 9000 (9014 bytes on the wire including ethernet
header).

Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:16:21 -04:00
Li RongQing 50eab0503a net: fix the use of this_cpu_ptr
flush_tasklet is not percpu var, and percpu is percpu var, and
	this_cpu_ptr(&info->cache->percpu->flush_tasklet)
is not equal to
	&this_cpu_ptr(info->cache->percpu)->flush_tasklet

1f743b076(use this_cpu_ptr per-cpu helper) introduced this bug.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:13:27 -04:00
Chris Metcalf ff7f3efb9a tile: expect new initramfs name from hypervisor file system
The current Tilera boot infrastructure now provides the initramfs
to Linux as a Tilera-hypervisor file named "initramfs", rather than
"initramfs.cpio.gz", as before.  (This makes it reasonable to use
other compression techniques than gzip on the file without having to
worry about the name causing confusion.)  Adapt to use the new name,
but also fall back to checking for the old name.

Cc'ing to stable so that older kernels will remain compatible with
newer Tilera boot infrastructure.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: stable@vger.kernel.org
2013-03-29 15:11:49 -04:00
nikolay@redhat.com 1bc7db1678 bonding: fix disabling of arp_interval and miimon
Currently if either arp_interval or miimon is disabled, they both get
disabled, and upon disabling they get executed once more which is not
the proper behaviour. Also when doing a no-op and disabling an already
disabled one, the other again gets disabled.
Also fix the error messages with the proper valid ranges, and a small
typo fix in the up delay error message (outputting "down delay", instead
of "up delay").

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 15:02:49 -04:00
Hannes Frederic Sowa 1c4a154e52 ipv6: don't accept node local multicast traffic from the wire
Erik Hugne's errata proposal (Errata ID: 3480) to RFC4291 has been
verified: http://www.rfc-editor.org/errata_search.php?eid=3480

We have to check for pkt_type and loopback flag because either the
packets are allowed to travel over the loopback interface (in which case
pkt_type is PACKET_HOST and IFF_LOOPBACK flag is set) or they travel
over a non-loopback interface back to us (in which case PACKET_TYPE is
PACKET_LOOPBACK and IFF_LOOPBACK flag is not set).

Cc: Erik Hugne <erik.hugne@ericsson.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 14:57:33 -04:00
Mirko Lindner 74f9f42c1c sky2: Threshold for Pause Packet is set wrong
The sky2 driver sets the Rx Upper Threshold for Pause Packet generation to a
wrong value which leads to only 2kB of RAM remaining space. This can lead to
Rx overflow errors even with activated flow-control.

Fix: We should increase the value to 8192/8

Signed-off-by: Mirko Lindner <mlindner@marvell.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 14:53:19 -04:00
Mirko Lindner 9cfe8b156c sky2: Receive Overflows not counted
The sky2 driver doesn't count the Receive Overflows because the MAC
interrupt for this event is not set in the MAC's interrupt mask.
The MAC's interrupt mask is set only for Transmit FIFO Underruns.

Fix: The correct setting should be (GM_IS_TX_FF_UR | GM_IS_RX_FF_OR)
Otherwise the Receive Overflow event will not generate any interrupt.
The  Receive Overflow interrupt is handled correctly

Signed-off-by: Mirko Lindner <mlindner@marvell.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-29 14:53:19 -04:00
Linus Torvalds b92eded4b7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph fix from Sage Weil:
 "This fixes a regression introduced during the last merge window when
  mapping non-existent images."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: don't zero-fill non-image object requests
2013-03-29 11:47:43 -07:00
Alex Elder 6e2a4505db rbd: don't zero-fill non-image object requests
A result of ENOENT from a read request for an object that's part of
an rbd image indicates that there is a hole in that portion of the
image.  Similarly, a short read for such an object indicates that
the remainder of the read should be interpreted a full read with
zeros filling out the end of the request.

This behavior is not correct for objects that are not backing rbd
image data.  Currently rbd_img_obj_request_callback() assumes it
should be done for all objects.

Change rbd_img_obj_request_callback() so it only does this zeroing
for image objects.  Encapsulate that special handling in its own
function.  Add an assertion that the image object request is a bio
request, since we assume that (and we currently don't support any
other types).

This resolves a problem identified here:
    http://tracker.ceph.com/issues/4559

The regression was introduced by bf0d5f503d.

Reported-by: Dan van der Ster <dan@vanderster.com>
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-off-by: Sage Weil <sage@inktank.com>
2013-03-29 11:32:07 -07:00
Linus Torvalds 3615db41c4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "We've had a busy two weeks of bug fixing.  The biggest patches in here
  are some long standing early-enospc problems (Josef) and a very old
  race where compression and mmap combine forces to lose writes (me).
  I'm fairly sure the mmap bug goes all the way back to the introduction
  of the compression code, which is proof that fsx doesn't trigger every
  possible mmap corner after all.

  I'm sure you'll notice one of these is from this morning, it's a small
  and isolated use-after-free fix in our scrub error reporting.  I
  double checked it here."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: don't drop path when printing out tree errors in scrub
  Btrfs: fix wrong return value of btrfs_lookup_csum()
  Btrfs: fix wrong reservation of csums
  Btrfs: fix double free in the btrfs_qgroup_account_ref()
  Btrfs: limit the global reserve to 512mb
  Btrfs: hold the ordered operations mutex when waiting on ordered extents
  Btrfs: fix space accounting for unlink and rename
  Btrfs: fix space leak when we fail to reserve metadata space
  Btrfs: fix EIO from btrfs send in is_extent_unchanged for punched holes
  Btrfs: fix race between mmap writes and compression
  Btrfs: fix memory leak in btrfs_create_tree()
  Btrfs: fix locking on ROOT_REPLACE operations in tree mod log
  Btrfs: fix missing qgroup reservation before fallocating
  Btrfs: handle a bogus chunk tree nicely
  Btrfs: update to use fs_state bit
2013-03-29 11:13:25 -07:00
Len Brown ed176886b6 ia64 idle: delete stale (*idle)() function pointer
Commit 3e7fc708eb ("ia64 idle: delete pm_idle") in 3.9-rc1 didn't
finish the job, leaving an un-initialized reference to (*idle)().

[ Haven't seen a crash from this - but seems like we are just being
  lucky that "idle" is zero so it does get initialized before we jump to
  randomland  - Len ]

Reported-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-29 11:12:25 -07:00
Linus Torvalds 67e17c1100 Merge branch 'for-curr' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull arc architecture fixes from Vineet Gupta:
 "This includes fix for a serious bug in DMA mapping API, make
  allyesconfig wreckage, removal of bogus email-list placeholder in
  MAINTAINERS, a typo in ptrace helper code and last remaining changes
  for syscall ABI v3 which we are finally starting to transition-to
  internally.

  The request is late than I intended to - but I was held up with
  debugging a timer link list corruption, for which a proposed fix to
  generic timer code was sent out to lkml/tglx earlier today."

* 'for-curr' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: Fix the typo in event identifier flags used by ptrace
  arc: fix dma_address assignment during dma_map_sg()
  ARC: Remove SET_PERSONALITY (tracks cross-arch change)
  ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI
  ARC: ABIv3: Print the correct ABI ver
  ARC: make allyesconfig build breakages
  ARC: MAINTAINERS update for ARC
2013-03-29 11:00:43 -07:00
Jan Kara 35e5cbc0af reiserfs: Fix warning and inode leak when deleting inode with xattrs
After commit 21d8a15a (lookup_one_len: don't accept . and ..) reiserfs
started failing to delete xattrs from inode. This was due to a buggy
test for '.' and '..' in fill_with_dentries() which resulted in passing
'.' and '..' entries to lookup_one_len() in some cases. That returned
error and so we failed to iterate over all xattrs of and inode.

Fix the test in fill_with_dentries() along the lines of the one in
lookup_one_len().

Reported-by: Pawel Zawora <pzawora@gmail.com>
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
2013-03-29 17:08:43 +01:00
Josef Bacik d8fe29e9de Btrfs: don't drop path when printing out tree errors in scrub
A user reported a panic where we were panicing somewhere in
tree_backref_for_extent from scrub_print_warning.  He only captured the trace
but looking at scrub_print_warning we drop the path right before we mess with
the extent buffer to print out a bunch of stuff, which isn't right.  So fix this
by dropping the path after we use the eb if we need to.  Thanks,

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-03-29 10:18:59 -04:00
Alexey Klimov 30b29537bc media: radio-ma901: return ENODEV in probe if usb_device doesn't match
Masterkit MA901 usb radio device shares USB ID with Atmel V-USB devices.
This patch adds additional checks in usb_ma901radio_probe() and if
product or manufacturer doesn't match we return -ENODEV and don't
continue. This allows hid drivers to handle not MA901 device.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-03-29 15:13:40 +01:00
Alexey Klimov 5b4617d820 HID: fix Masterkit MA901 hid quirks
This patch reverts commit 0322bd3980 ("usb hid quirks for Masterkit MA901 usb
radio") and adds checks in hid_ignore() for Masterkit MA901 usb radio device.
This usb radio device shares USB ID with many Atmel V-USB (and probably other)
devices so patch sorts things out by checking name, vendor, product of hid device.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-03-29 15:13:39 +01:00
Jiri Kosina 6aeedba20e Merge tag v3.9-rc1 into for-3.9/upstream-fixes
This is done so that I am able to apply fix for commit
0322bd3980 ("usb hid quirks for Masterkit MA901 usb radio") which
went into 3.9-rc1.
2013-03-29 15:12:21 +01:00
Nicholas Bellinger f85eda8d75 target: Fix RESERVATION_CONFLICT status regression for iscsi-target special case
This patch fixes a regression introduced in v3.8-rc1 code where a failed
target_check_reservation() check in target_setup_cmd_from_cdb() was causing
an incorrect SAM_STAT_GOOD status to be returned during a WRITE operation
performed by an unregistered / unreserved iscsi initiator port.

This regression is only effecting iscsi-target due to a special case check
for TCM_RESERVATION_CONFLICT within iscsi_target_erl1.c:iscsit_execute_cmd(),
and was still correctly disallowing WRITE commands from backend submission
for unregistered / unreserved initiator ports, while returning the incorrect
SAM_STAT_GOOD status due to the missing SAM_STAT_RESERVATION_CONFLICT
assignment.

This regression was first introduced with:

commit de103c93af
Author: Christoph Hellwig <hch@lst.de>
Date:   Tue Nov 6 12:24:09 2012 -0800

    target: pass sense_reason as a return value

Go ahead and re-add the missing SAM_STAT_RESERVATION_CONFLICT assignment
during a target_check_reservation() failure, so that iscsi-target code
sends the correct SCSI status.

All other fabrics using target_submit_cmd_*() with a RESERVATION_CONFLICT
call to transport_generic_request_failure() are not effected by this bug.

Reported-by: Jeff Leung <jleung@curriegrad2004.ca>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-03-28 23:42:47 -07:00
Nicholas Bellinger 5dade71050 tcm_vhost: Avoid VIRTIO_RING_F_EVENT_IDX feature bit
This patch adds a VHOST_SCSI_FEATURES mask minus VIRTIO_RING_F_EVENT_IDX
so that vhost-scsi-pci userspace will strip this feature bit once
GET_FEATURES reports it as being unsupported on the host.

This is to avoid a bug where ->handle_kicks() are missed when EVENT_IDX
is enabled by default in userspace code.

(mst: Rename to VHOST_SCSI_FEATURES + add comment)

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Asias He <asias@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-03-28 23:42:47 -07:00
Maarten Lankhorst e4604d8fe8 drm/nouveau: fix NULL ptr dereference from nv50_disp_intr()
Op 23-03-13 12:47, Peter Hurley schreef:
> On Tue, 2013-03-19 at 11:13 -0400, Peter Hurley wrote:
>> On vanilla 3.9.0-rc3, I get this 100% repeatable oops after login when
>> the user X session is coming up:
> Perhaps I wasn't clear that this happens on every boot and is a
> regression from 3.8
>
> I'd be happy to help resolve this but time is of the essence; it would
> be a shame to have to revert all of this for 3.9

Well it broke on my system too, so it was easy to fix.

I didn't even need gdm to trigger it!

>8----
This fixes regression caused by 1d7c71a3e2 (drm/nouveau/disp: port vblank handling to event interface),

which causes a oops in the following way:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000001
IP: [<0000000000000001>] 0x0
PGD 0
Oops: 0010 [#1] PREEMPT SMP
Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables ...<snip>...
CPU 3
Pid: 0, comm: swapper/3 Not tainted 3.9.0-rc3-xeon #rc3 Dell Inc. Precision WorkStation T5400  /0RW203
RIP: 0010:[<0000000000000001>]  [<0000000000000001>] 0x0
RSP: 0018:ffff8802afcc3d80  EFLAGS: 00010087
RAX: ffff88029f6e5808 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000096 RSI: 0000000000000001 RDI: ffff88029f6e5808
RBP: ffff8802afcc3dc8 R08: 0000000000000000 R09: 0000000000000004
R10: 000000000000002c R11: ffff88029e559a98 R12: ffff8802a376cb78
R13: ffff88029f6e57e0 R14: ffff88029f6e57f8 R15: ffff88029f6e5808
FS:  0000000000000000(0000) GS:ffff8802afcc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000001 CR3: 000000029fa67000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/3 (pid: 0, threadinfo ffff8802a355e000, task ffff8802a3535c40)
Stack:
 ffffffffa0159d8a 0000000000000082 ffff88029f6e5820 0000000000000001
 ffff88029f71aa00 0000000000000000 0000000000000000 0000000004000000
 0000000004000000 ffff8802afcc3e38 ffffffffa01843b5 ffff8802afcc3df8
Call Trace:
 <IRQ>
 [<ffffffffa0159d8a>] ? nouveau_event_trigger+0xaa/0xe0 [nouveau]
 [<ffffffffa01843b5>] nv50_disp_intr+0xc5/0x200 [nouveau]
 [<ffffffff816fbacc>] ? _raw_spin_unlock_irqrestore+0x2c/0x50
 [<ffffffff816ff98d>] ? notifier_call_chain+0x4d/0x70
 [<ffffffffa017a105>] nouveau_mc_intr+0xb5/0x110 [nouveau]
 [<ffffffffa01d45ff>] nouveau_irq_handler+0x6f/0x80 [nouveau]
 [<ffffffff810eec95>] handle_irq_event_percpu+0x75/0x260
 [<ffffffff810eeec8>] handle_irq_event+0x48/0x70
 [<ffffffff810f205a>] handle_fasteoi_irq+0x5a/0x100
 [<ffffffff810182f2>] handle_irq+0x22/0x40
 [<ffffffff8170561a>] do_IRQ+0x5a/0xd0
 [<ffffffff816fc2ad>] common_interrupt+0x6d/0x6d
 <EOI>
 [<ffffffff810449b6>] ? native_safe_halt+0x6/0x10
 [<ffffffff8101ea1d>] default_idle+0x3d/0x170
 [<ffffffff8101f736>] cpu_idle+0x116/0x130
 [<ffffffff816e2a06>] start_secondary+0x251/0x258
Code:  Bad RIP value.
RIP  [<0000000000000001>] 0x0
 RSP <ffff8802afcc3d80>
CR2: 0000000000000001
---[ end trace 907323cb8ce6f301 ]---

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-29 13:45:04 +10:00
Maarten Lankhorst b43decd2c5 drm/nouveau: fix handling empty channel list in ioctl's
If there are no channels, chan would never end up being NULL,
and so the null pointer check would fail.

Solve this by initializing chan to NULL, and iterating over temp instead.

Fixes oops when running intel-gpu-tools/tests/kms_flip, which attempts to
do some intel ioctl's on a nouveau device.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: stable@vger.kernel.org [3.7+]
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-29 13:44:57 +10:00
Michel Lespinasse 09a9f1d278 Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"
This reverts commit 1869305009 ("mm: introduce VM_POPULATE flag to
better deal with racy userspace programs").

VM_POPULATE only has any effect when userspace plays racy games with
vmas by trying to unmap and remap memory regions that mmap or mlock are
operating on.

Also, the only effect of VM_POPULATE when userspace plays such games is
that it avoids populating new memory regions that get remapped into the
address range that was being operated on by the original mmap or mlock
calls.

Let's remove VM_POPULATE as there isn't any strong argument to mandate a
new vm_flag.

Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-28 17:45:51 -07:00
Arnd Bergmann 76a254f764 mvebu fixes for v3.9 (round 2)
- mvebu
     - interrupt fix
     - DT pinctrl definition for sdio
 
  - kirkwood
     - chip-delay for GoFlex Net (fix reading nand)
     - set mvsdio unused pins to invalid value for legacy boards (0 is valid)
 
  - orion5x
     - fix typo in gpio parameters
     - use correct irq in dtsi
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Merge tag 'mvebu_fixes_for_v3.9_round2' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper <jason@lakedaemon.net>:

mvebu fixes for v3.9 (round 2)

 - mvebu
    - interrupt fix
    - DT pinctrl definition for sdio

 - kirkwood
    - chip-delay for GoFlex Net (fix reading nand)
    - set mvsdio unused pins to invalid value for legacy boards (0 is valid)

 - orion5x
    - fix typo in gpio parameters
    - use correct irq in dtsi

* tag 'mvebu_fixes_for_v3.9_round2' of git://git.infradead.org/users/jcooper/linux:
  arm: mvebu: Fix pinctrl for Armada 370 Mirabox SDIO port.
  arm: orion5x: correct IRQ used in dtsi for mv_cesa
  arm: orion5x: fix orion5x.dtsi gpio parameters
  ARM: Kirkwood: fix unused mvsdio gpio pins
  arm: mvebu: Use local interrupt only for the timer 0
  ARM: kirkwood: Fix chip-delay for GoFlex Net

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-03-29 00:04:23 +01:00
Linus Torvalds 0776ce03b1 USB fixes for 3.9-rc4
Here are some USB fixes to resolve issues reported recently, as well as a new
 device id for the ftdi_sio driver.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are some USB fixes to resolve issues reported recently, as well
  as a new device id for the ftdi_sio driver."

* tag 'usb-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: ftdi_sio: Add support for Mitsubishi FX-USB-AW/-BD
  usb: Fix compile error by selecting USB_OTG_UTILS
  USB: serial: fix hang when opening port
  USB: EHCI: fix bug in iTD/siTD DMA pool allocation
  xhci: Don't warn on empty ring for suspended devices.
  usb: xhci: Fix TRB transfer length macro used for Event TRB.
  usb/acpi: binding xhci root hub usb port with ACPI
  usb: add find_raw_port_number callback to struct hc_driver()
  usb: xhci: fix build warning
2013-03-28 15:54:25 -07:00
Linus Torvalds 045ecc26a0 TTY/serial fixes for 3.9-rc4
Here are some tty/serial driver fixes for 3.9.
 
 The big thing here is the fix for the huge mess we caused renaming the 8250
 driver accidentally in the 3.7 kernel release, without realizing that there
 were users of the module options that suddenly broke.  This is now resolved,
 and, to top the injury off, we have a backwards-compatible option for those
 users who got used to the new name since 3.7.  Ugh, sorry about that.
 
 Other than that, some other minor fixes for issues that have been reported by
 users.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull TTY/serial fixes from Greg Kroah-Hartman:
 "Here are some tty/serial driver fixes for 3.9.

  The big thing here is the fix for the huge mess we caused renaming the
  8250 driver accidentally in the 3.7 kernel release, without realizing
  that there were users of the module options that suddenly broke.  This
  is now resolved, and, to top the injury off, we have a backwards-
  compatible option for those users who got used to the new name since
  3.7.  Ugh, sorry about that.

  Other than that, some other minor fixes for issues that have been
  reported by users."

* tag 'tty-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Xilinx: ARM: UART: clear pending irqs before enabling irqs
  TTY: 8250, deprecated 8250_core.* options
  TTY: 8250, revert module name change
  serial: 8250_pci: Add WCH CH352 quirk to avoid Xscale detection
  tty: atmel_serial_probe(): index of atmel_ports[] fix
2013-03-28 15:53:33 -07:00
Linus Torvalds 865752ed0a Staging driver fixes for 3.9-rc4
Here are two tiny staging driver fixes to resolve issues that have been
 reported.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg Kroah-Hartman:
 "Here are two tiny staging driver fixes to resolve issues that have
  been reported."

* tag 'staging-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: comedi: s626: fix continuous acquisition
  staging: zcache: fix typo "64_BIT"
2013-03-28 15:52:54 -07:00
Linus Torvalds 97f084b8e6 sysfs fixes for 3.9-rc4
Here are two fixes for sysfs that resolve issues that have been found by the
 Trinity fuzz tool, causing oopses in sysfs.  They both have been in linux-next
 for a while to ensure that they do not cause any other problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull sysfs fixes from Greg Kroah-Hartman:
 "Here are two fixes for sysfs that resolve issues that have been found
  by the Trinity fuzz tool, causing oopses in sysfs.  They both have
  been in linux-next for a while to ensure that they do not cause any
  other problems."

* tag 'driver-core-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: handle failure path correctly for readdir()
  sysfs: fix race between readdir and lseek
2013-03-28 15:52:14 -07:00