Commit Graph

362647 Commits

Author SHA1 Message Date
Heikki Krogerus
e4fb3b88eb serial: 8250_dma: Use dmaengine helpers to get the slave channels
The helper functions in dmaengine API allow the drivers to
request slave channels without the filter parameters. They
will attempt to extract the needed DMA client information
from DT or ACPI, but if such information is not available
the filter parameters can still be used.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:19:26 -07:00
Heikki Krogerus
75df022b5f serial: 8250_dma: Fix RX handling
Overrun, parity and framing errors should be handled in
8250_core. This also adds check for the dma_status and exits
if the channel is not idle.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:18:39 -07:00
Heikki Krogerus
5ea5b24da8 serial: 8250_dma: TX cleanup
Removing one unneeded uart_write_wakeup(). There is no need
to start PIO transfer unless DMA fails, so this also changes
serial8250_tx_dma() to return 0 unless that is the case.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:17:56 -07:00
Arnd Bergmann
84f57d9e36 tty: serial/samsung: fix modular build
There are a few bugs in the samsung serial driver when built as a
loadable module, which makes the console code unavailable, as well as
giving no access to the 'printascii' early debug function. This adds
the appropriate compile time conditionals.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:14:37 -07:00
Arnd Bergmann
9ee51f01ee tty: serial/samsung: make register definitions global
The registers for the Samsung S3C serial port are currently defined in
the platform specific arch/arm/plat-samsung/include/plat/regs-serial.h
file, which is not visible to multiplatform capable drivers.

Unfortunately, it is not possible to move the file into a more local
place as we should normally try to, because the same registers
may be used in one of four places:

* In the driver itself
* In platform-independent ARM code for early debug output
* In platform_data definitions
* In the Samsung platform power management code

I have also found no way to logically split out a platform_data
file, other than possibly move everything into
include/linux/platform_data, which also felt wrong. The only
part of this file that makes sense to keep specific to the s3c24xx
platform are the virtual and physical addresses defined here,
which are needed in no other location.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:14:36 -07:00
Arnd Bergmann
17efd2b786 tty: serial/samsung: prepare for common clock API
With the common clock interface, there is no way to provide the
"clock_source" sysfs attribute for the samsung serial ports. Given that
this file was purely informational and had fixed contents, we have reason
to believe that no user space programs were relying on it.

The sysfs file is not documented in the ABI docs.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 13:14:36 -07:00
Alexandre Belloni
e7a7f972f9 gpio: pca953x: fix irq_domain_add_simple usage
We actually have to pass chip as the host_data parameter of
irq_domain_add_simple() as later on, it is used to initialize chip_data
in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer
dereference after calling irq_data_get_irq_chip_data() in
pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(),
pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type().

Fixes regression introduced by commit
0e8f2fdacf (gpio: pca953x: use simple
irqdomain)

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-11 19:01:19 +02:00
Mark Brown
ca62bed0bb Merge remote-tracking branch 'asoc/fix/wm8903' into tmp 2013-04-11 18:00:31 +01:00
Mark Brown
f255e71f3d Merge remote-tracking branch 'asoc/fix/tegra' into tmp 2013-04-11 18:00:30 +01:00
Mark Brown
027d210f24 Merge remote-tracking branch 'asoc/fix/samsung' into tmp 2013-04-11 18:00:29 +01:00
Mark Brown
cbf9c5ae32 Merge remote-tracking branch 'asoc/fix/core' into tmp 2013-04-11 18:00:28 +01:00
Mark Brown
ee3aee6a3b Merge remote-tracking branch 'asoc/fix/compress' into tmp 2013-04-11 18:00:27 +01:00
Arnd Bergmann
71bd98aff0 mvebu fixes for v3.9 round 3
- Kirkwood
     - a couple of small fixes for the Iomega ix2-200 board (ether and led)
  - mvebu
     - allow GPIO button to work on Mirabox when running SMP
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQEcBAABAgAGBQJRZZxwAAoJEAi3KVZQDZAerwcIAKR1xRKuagtXvfij+xfVVRQ6
 1G645hTIthFXmNiEeo3Y/mswHhVooZvu8SWh3o3J2Wsbnzeh+ch6jTsl+g6Tnb3E
 KmRFU0mcalRmsyYsh4PH9nDi8/oWyP+i3ZytgfcMlsSPNiE+Ek35NdTTWMLCTT8V
 MkGysVc8MWoOmMf47mNboy5UUUTXRdnSUJSjv1ubrsTK33LT7Ii9Ce+eoNvpvF+5
 +6RenfRMzRSwkZf9AaCRPAhXISQKbMAwz6lKGo2GGAW+73Z+JclXXmiCfQ8pWie2
 pfyqiEYigZFqe6Ly5BUtGoVfDjmOLDs+ATTUDOlOj0uaEc7pOwwKoAtpVRdck24=
 =yK1f
 -----END PGP SIGNATURE-----

Merge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper <jason@lakedaemon.net>:

mvebu fixes for v3.9 round 3

 - Kirkwood
    - a couple of small fixes for the Iomega ix2-200 board (ether and led)
 - mvebu
    - allow GPIO button to work on Mirabox when running SMP

* tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-11 16:55:29 +02:00
Nicholas Bellinger
30f359a6f9 target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
This patch fixes a bug where a handful of informational / control CDBs
that should be allowed during ALUA access state Standby/Offline/Transition
where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.

This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
registration when LUN scanning occured during these ALUA access states.

Cc: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-04-11 01:48:49 -07:00
Asias He
055f648c49 tcm_vhost: Send bad target to guest when cmd fails
Send bad target to guest in case:
1) we can not allocate the cmd
2) fail to submit the cmd

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-04-11 01:48:42 -07:00
Asias He
637ab21e28 tcm_vhost: Add vhost_scsi_send_bad_target() helper
Share the send bad target code with other use cases.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-04-11 01:48:35 -07:00
Asias He
7ea206cf3b tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
If we fail to submit the allocated tv_vmd to tcm_vhost_submission_work,
we will leak the tv_vmd. Free tv_vmd on fail path.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-04-11 01:48:27 -07:00
Asias He
f6da51c3ef tcm_vhost: Remove double check of response
We did the length of response check twice.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-04-11 01:48:11 -07:00
Andrea Arcangeli
f76cfa3c24 x86/mm/cpa: Convert noop to functional fix
Commit:

  a8aed3e075 ("x86/mm/pageattr: Prevent PSE and GLOABL leftovers to confuse pmd/pte_present and pmd_huge")

introduced a valid fix but one location that didn't trigger the bug that
lead to finding those (small) problems, wasn't updated using the
right variable.

The wrong variable was also initialized for no good reason, that
may have been the source of the confusion. Remove the noop
initialization accordingly.

Commit a8aed3e075 also erroneously removed one canon_pgprot pass meant
to clear pmd bitflags not supported in hardware by older CPUs, that
automatically gets corrected by this patch too by applying it to the right
variable in the new location.

Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Link: http://lkml.kernel.org/r/1365600505-19314-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-11 10:34:42 +02:00
Linus Torvalds
7ee32a6d30 Char/Misc fix for 3.9-rc6
Here is a single Kconfig dependancy build fix for 3.9.
 
 It's been in linux-next for a while, and fixes a problem that has been
 reported multiple times.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlFl6SwACgkQMUfUDdst+ymz3ACeIn0fF1Pi8omSRi686EcZ6j7h
 Q/wAnAhV5APmgUCHYW3ydQRARCWeDuxc
 =aEDF
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg Kroah-Hartman:
 "Here is a single Kconfig dependancy build fix for 3.9.

  It's been in linux-next for a while, and fixes a problem that has been
  reported multiple times."

* tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc/vmw_vmci: Add dependency on CONFIG_NET
2013-04-10 16:00:53 -07:00
Linus Torvalds
7a92bc3856 TTY/Serial fixes for 3.9-rc6
Here are 4 small tty/serial fixes for 3.9.
 
 One fixes a bug where we broke the documentation build, and the others
 fix reported problems in some serial drivers.
 
 All have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlFl6bQACgkQMUfUDdst+yk1OQCcCCTj+kOPaBks2HLzJx6DgvXl
 OIoAoI7aDtxyjSgxVU96xQa1JRdobHQD
 =gVrB
 -----END PGP SIGNATURE-----

Merge tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg Kroah-Hartman:
 "Here are 4 small tty/serial fixes for 3.9.

  One fixes a bug where we broke the documentation build, and the others
  fix reported problems in some serial drivers.

  All have been in linux-next for a while"

* tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: mxser: fix cycle termination condition in mxser_probe() and mxser_module_init()
  Revert "tty/8250_pnp: serial port detection regression since v3.7"
  OMAP/serial: Revert bad fix of Rx FIFO threshold granularity
  tty: Documentation: fix a path in a DocBook template
2013-04-10 15:59:12 -07:00
Linus Torvalds
722aacb285 Bug-fixes:
- Early bootup issue found on DL380 machines
 - Fix for the timer interrupt not being processed right away.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (GNU/Linux)
 
 iQEcBAABAgAGBQJRZbq0AAoJEFjIrFwIi8fJTnsIAIWYw7g9j0T9gijc/t5wEZrK
 KpPBITlGFAeM7liEaUh5X5M2B86tBoI77uV5EGCvDDwth+FD5WsgeMesxV9KlMdj
 vbWLGubJpmd8zy6Q1f/T3LsxGHGCjz8jASeN7YTPRdBqITOQDqXjj2VC/4n7AQCh
 Le3ml3A/NZTZMiz2PK8lDzjpzY2lDgrIloevahVoYLe8Jxg2aW5JTaZQg7oPA6ir
 lqC1Sgju6RDKR0kmPmM8wl5TOIMCkrygriP62B+Ww9wl9HlS+X5/JlK3zVj0vJXo
 oxNyDKEK96M54oO5t/v7qzdfX2Xj+S/6JPZOlegCWGClS9rQoK3uDBZupGLiAh8=
 =jaNW
 -----END PGP SIGNATURE-----

Merge tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 "Two bug-fixes:
   - Early bootup issue found on DL380 machines
   - Fix for the timer interrupt not being processed right awaym leading
     to quite delayed time skew on certain workloads"

* tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: On early bootup, flush the TLB when changing RO->RW bits Xen provided pagetables.
  xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.
2013-04-10 15:57:33 -07:00
Linus Torvalds
9baba6660b Namhyung Kim fixed a long standing bug that can cause a kernel panic.
If the function profiler fails to allocate memory for everything,
 it will do a double free on the same pointer which can cause a panic.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQEcBAABAgAGBQJRZdpLAAoJEOdOSU1xswtMyKgH/12ep1nFAYvXQQ04vcV3stCV
 7vgk6oDMAGSYgwV2eNUbHNm2zkQBifFxUWLqWyzCd9t4RZUiIv5QHd2a+N2Ta+Xp
 Do8zhwod3vzSaZsM3JvQRK5q8U6R72dqroPiv+lJ+jh7cIPdHCm87P+ZPYgAgpfv
 6J80Vk34q/HdEGEmNuQgLzgfB+sfld/Ob6Te69f1rmzqCfHCytY1i3R0iPWvaI/v
 B8R5cosjDhm0hAljsFlZb2Vl1jb89ByTgX3dL5Ph3O+hnHPCWE+ZQtbLCaOBV9F0
 z8glXmAu2XVhv++0d21ul/TddQhVYQYF+ZMawxUlnLVKZ/J66c3l9Omhwf33Wz4=
 =+NqN
 -----END PGP SIGNATURE-----

Merge tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Namhyung Kim fixed a long standing bug that can cause a kernel panic.

  If the function profiler fails to allocate memory for everything, it
  will do a double free on the same pointer which can cause a panic"

* tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix double free when function profile init failed
2013-04-10 15:56:57 -07:00
Linus Torvalds
fe2971a017 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) cfg80211_conn_scan() must be called with the sched_scan_mutex, fix
    from Artem Savkov.

 2) Fix regression in TCP ICMPv6 processing, we do not want to treat
    redirects as socket errors, from Christoph Paasch.

 3) Fix several recvmsg() msg_name kernel memory leaks into userspace,
    in ATM, AX25, Bluetooth, CAIF, IRDA, s390 IUCV, L2TP, LLC, Netrom,
    NFC, Rose, TIPC, and VSOCK.  From Mathias Krause and Wei Yongjun.

 4) Fix AF_IUCV handling of segmented SKBs in recvmsg(), from Ursula
    Braun and Eric Dumazet.

 5) CAN gw.c code does kfree() on SLAB cache memory, use
    kmem_cache_free() instead.  Fix from Wei Yongjun.

 6) Fix LSM regression on TCP SYN/ACKs, some LSMs such as SELINUX want
    an skb->sk socket context available for these packets, but nothing
    else requires it.  From Eric Dumazet and Paul Moore.

 7) Fix ipv4 address lifetime processing so that we don't perform
    sleepable acts inside of rcu_read_lock() sections, do them in an
    rtnl_lock() section instead.  From Jiri Pirko.

 8) mvneta driver accidently sets HW features after device registry, it
    should do so beforehand.  Fix from Willy Tarreau.

 9) Fix bonding unload races more correctly, from Nikolay Aleksandrov
    and Veaceslav Falico.

10) rtnl_dump_ifinfo() and rtnl_calcit() invoke nlmsg_parse() with wrong
    header size argument.  Fix from Michael Riesch.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  lsm: add the missing documentation for the security_skb_owned_by() hook
  bnx2x: Prevent null pointer dereference in AFEX mode
  e100: Add dma mapping error check
  selinux: add a skb_owned_by() hook
  can: gw: use kmem_cache_free() instead of kfree()
  netrom: fix invalid use of sizeof in nr_recvmsg()
  qeth: fix qeth_wait_for_threads() deadlock for OSN devices
  af_iucv: fix recvmsg by replacing skb_pull() function
  rtnetlink: Call nlmsg_parse() with correct header length
  bonding: fix bonding_masters race condition in bond unloading
  Revert "bonding: remove sysfs before removing devices"
  net: mvneta: enable features before registering the driver
  hyperv: Fix RNDIS send_completion code path
  hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
  net: ipv4: fix schedule while atomic bug in check_lifetime()
  net: ipv4: reset check_lifetime_work after changing lifetime
  bnx2x: Fix KR2 rapid link flap
  sctp: remove 'sridhar' from maintainers list
  VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()
  VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
  ...
2013-04-10 14:15:27 -07:00
Linus Torvalds
eb02db38ee C6X fixes for v3.9
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJRZHBnAAoJEOiN4VijXeFPWecP/jdVOdrdCVjVPkdya5m7C31/
 T/a7yablBLrH4Xvvr8DkJtLH3ZXKGJK8Duveu5yk/W9NxpdSQzyAhU39xQCDHg16
 9SjZd7hfe2WIHj4NN6+J0xPfqnC0Qo2oPKJ9KTWEMnYYwDErzAyeSTBLw+ref2t0
 xRaJ5jQ1RpbltH/MkQ6LiWGlp05VoYAYfhDaLDjtFvQUat52ddq3fbrgjSsp9tSg
 xk27ATBCQ723lahsK6m+APml+X8jcV84AeOoaBFvMYjsw6336OUlQfSvBUcGTZr/
 IgPBKg11z20NBjTOSEmZR8eo2Hsk5Uy8hTHRTLXiRO2N9W7180nY3G+H5m4s9wfJ
 GT7M4bvRj1FU16g3018CdREjoLQctORyi9zh3t+k/GmpvJ5pnkmyBUc7g2XO49Zr
 ByoRWt7bCLTms2es3kK8soBfSPQGrdoJn9N4NAwVxrh+CYTCH6FWvMoXcptDnzX2
 e0AyBZTWtuQ+kuThUfLGLKO0KqXIevVo8GaxTfW2yOPZEbwk8Y9MZyQ67hBKm9vR
 /iMBGSDuLJstaGlwxqKJEaKDSg5ilSYQ4JZfbsBfp8r5L016aMheGIQGZ+4a6Z0x
 NxcMLvwlV4W87B92abY1aZFVFw6DfmLVXiPaXP0SLumtDgKa99QSBaMThq25pCIE
 neDAzgVQ5d6Ii2pXFcik
 =Tse1
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull C6X fix from Mark Salter.

Final (?) fix from the barrier discussion.

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  add memory barrier to arch_local_irq_restore
2013-04-10 14:14:27 -07:00
Sachin Prabhu
c369c9a4a7 cifs: Allow passwords which begin with a delimitor
Fixes a regression in cifs_parse_mount_options where a password
which begins with a delimitor is parsed incorrectly as being a blank
password.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2013-04-10 15:54:14 -05:00
Paul Moore
6b07a24fc3 lsm: add the missing documentation for the security_skb_owned_by() hook
Unfortunately we didn't catch the missing comments earlier when the
patch was merged.

Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-10 15:40:39 -04:00
Yuval Mintz
fea7564534 bnx2x: Prevent null pointer dereference in AFEX mode
The cnic module is responsible for initializing various bnx2x structs
via callbacks provided by the bnx2x module.
One such struct is the queue object for the FCoE queue.

If a device is working in AFEX mode and its configuration allows FCoE yet
the cnic module is not loaded, it's very likely a null pointer dereference
will occur, as the bnx2x will erroneously access the FCoE's queue object.

Prevent said access until cnic properly registers itself.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-10 15:27:04 -04:00
Neil Horman
61a0f6efc8 e100: Add dma mapping error check
e100 uses pci_map_single, but fails to check for a dma mapping error after its
use, resulting in a stack trace:

[   46.656594] ------------[ cut here ]------------
[   46.657004] WARNING: at lib/dma-debug.c:933 check_unmap+0x47b/0x950()
[   46.657004] Hardware name: To Be Filled By O.E.M.
[   46.657004] e100 0000:00:0e.0: DMA-API: device driver failed to check map
error[device address=0x000000007a4540fa] [size=90 bytes] [mapped as single]
[   46.657004] Modules linked in:
[   46.657004]  w83627hf hwmon_vid snd_via82xx ppdev snd_ac97_codec ac97_bus
snd_seq snd_pcm snd_mpu401 snd_mpu401_uart ns558 snd_rawmidi gameport parport_pc
e100 snd_seq_device parport snd_page_alloc snd_timer snd soundcore skge shpchp
k8temp mii edac_core i2c_viapro edac_mce_amd nfsd auth_rpcgss nfs_acl lockd
sunrpc binfmt_misc uinput ata_generic pata_acpi radeon i2c_algo_bit
drm_kms_helper ttm firewire_ohci drm firewire_core pata_via sata_via i2c_core
sata_promise crc_itu_t
[   46.657004] Pid: 792, comm: ip Not tainted 3.8.0-0.rc6.git0.1.fc19.x86_64 #1
[   46.657004] Call Trace:
[   46.657004]  <IRQ>  [<ffffffff81065ed0>] warn_slowpath_common+0x70/0xa0
[   46.657004]  [<ffffffff81065f4c>] warn_slowpath_fmt+0x4c/0x50
[   46.657004]  [<ffffffff81364cfb>] check_unmap+0x47b/0x950
[   46.657004]  [<ffffffff8136522f>] debug_dma_unmap_page+0x5f/0x70
[   46.657004]  [<ffffffffa030f0f0>] ? e100_tx_clean+0x30/0x210 [e100]
[   46.657004]  [<ffffffffa030f1a8>] e100_tx_clean+0xe8/0x210 [e100]
[   46.657004]  [<ffffffffa030fc6f>] e100_poll+0x56f/0x6c0 [e100]
[   46.657004]  [<ffffffff8159dce1>] ? net_rx_action+0xa1/0x370
[   46.657004]  [<ffffffff8159ddb2>] net_rx_action+0x172/0x370
[   46.657004]  [<ffffffff810703bf>] __do_softirq+0xef/0x3d0
[   46.657004]  [<ffffffff816e4ebc>] call_softirq+0x1c/0x30
[   46.657004]  [<ffffffff8101c485>] do_softirq+0x85/0xc0
[   46.657004]  [<ffffffff81070885>] irq_exit+0xd5/0xe0
[   46.657004]  [<ffffffff816e5756>] do_IRQ+0x56/0xc0
[   46.657004]  [<ffffffff816dacb2>] common_interrupt+0x72/0x72
[   46.657004]  <EOI>  [<ffffffff816da1eb>] ?
_raw_spin_unlock_irqrestore+0x3b/0x70
[   46.657004]  [<ffffffff816d124d>] __slab_free+0x58/0x38b
[   46.657004]  [<ffffffff81214424>] ? fsnotify_clear_marks_by_inode+0x34/0x120
[   46.657004]  [<ffffffff811b0417>] ? kmem_cache_free+0x97/0x320
[   46.657004]  [<ffffffff8157fc14>] ? sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff8157fc14>] ? sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff811b0692>] kmem_cache_free+0x312/0x320
[   46.657004]  [<ffffffff8157fc14>] sock_destroy_inode+0x34/0x40
[   46.657004]  [<ffffffff811e8c28>] destroy_inode+0x38/0x60
[   46.657004]  [<ffffffff811e8d5e>] evict+0x10e/0x1a0
[   46.657004]  [<ffffffff811e9605>] iput+0xf5/0x180
[   46.657004]  [<ffffffff811e4338>] dput+0x248/0x310
[   46.657004]  [<ffffffff811ce0e1>] __fput+0x171/0x240
[   46.657004]  [<ffffffff811ce26e>] ____fput+0xe/0x10
[   46.657004]  [<ffffffff8108d54c>] task_work_run+0xac/0xe0
[   46.657004]  [<ffffffff8106c6ed>] do_exit+0x26d/0xc30
[   46.657004]  [<ffffffff8109eccc>] ? finish_task_switch+0x7c/0x120
[   46.657004]  [<ffffffff816dad58>] ? retint_swapgs+0x13/0x1b
[   46.657004]  [<ffffffff8106d139>] do_group_exit+0x49/0xc0
[   46.657004]  [<ffffffff8106d1c4>] sys_exit_group+0x14/0x20
[   46.657004]  [<ffffffff816e3b19>] system_call_fastpath+0x16/0x1b
[   46.657004] ---[ end trace 4468c44e2156e7d1 ]---
[   46.657004] Mapped at:
[   46.657004]  [<ffffffff813663d1>] debug_dma_map_page+0x91/0x140
[   46.657004]  [<ffffffffa030e8eb>] e100_xmit_prepare+0x12b/0x1c0 [e100]
[   46.657004]  [<ffffffffa030c924>] e100_exec_cb+0x84/0x140 [e100]
[   46.657004]  [<ffffffffa030e56a>] e100_xmit_frame+0x3a/0x190 [e100]
[   46.657004]  [<ffffffff8159ee89>] dev_hard_start_xmit+0x259/0x6c0

Easy fix, modify the cb paramter to e100_exec_cb to return an error, and do the
dma_mapping_error check in the obvious place

This was reported previously here:
http://article.gmane.org/gmane.linux.network/257893

But nobody stepped up and fixed it.

CC: Josh Boyer <jwboyer@redhat.com>
CC: e1000-devel@lists.sourceforge.net
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Michal Jaegermann <michal@harddata.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-10 15:25:15 -04:00
Boris Ostrovsky
511ba86e1d x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
Invoking arch_flush_lazy_mmu_mode() results in calls to
preempt_enable()/disable() which may have performance impact.

Since lazy MMU is not used on bare metal we can patch away
arch_flush_lazy_mmu_mode() so that it is never called in such
environment.

[ hpa: the previous patch "Fix vmalloc_fault oops during lazy MMU
  updates" may cause a minor performance regression on
  bare metal.  This patch resolves that performance regression.  It is
  somewhat unclear to me if this is a good -stable candidate. ]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: http://lkml.kernel.org/r/1364045796-10720-2-git-send-email-konrad.wilk@oracle.com
Tested-by: Josh Boyer <jwboyer@redhat.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> SEE NOTE ABOVE
2013-04-10 11:25:10 -07:00
Samu Kallio
1160c2779b x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates
In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops
when lazy MMU updates are enabled, because set_pgd effects are being
deferred.

One instance of this problem is during process mm cleanup with memory
cgroups enabled. The chain of events is as follows:

- zap_pte_range enables lazy MMU updates
- zap_pte_range eventually calls mem_cgroup_charge_statistics,
  which accesses the vmalloc'd mem_cgroup per-cpu stat area
- vmalloc_fault is triggered which tries to sync the corresponding
  PGD entry with set_pgd, but the update is deferred
- vmalloc_fault oopses due to a mismatch in the PUD entries

The OOPs usually looks as so:

------------[ cut here ]------------
kernel BUG at arch/x86/mm/fault.c:396!
invalid opcode: 0000 [#1] SMP
.. snip ..
CPU 1
Pid: 10866, comm: httpd Not tainted 3.6.10-4.fc18.x86_64 #1
RIP: e030:[<ffffffff816271bf>]  [<ffffffff816271bf>] vmalloc_fault+0x11f/0x208
.. snip ..
Call Trace:
 [<ffffffff81627759>] do_page_fault+0x399/0x4b0
 [<ffffffff81004f4c>] ? xen_mc_extend_args+0xec/0x110
 [<ffffffff81624065>] page_fault+0x25/0x30
 [<ffffffff81184d03>] ? mem_cgroup_charge_statistics.isra.13+0x13/0x50
 [<ffffffff81186f78>] __mem_cgroup_uncharge_common+0xd8/0x350
 [<ffffffff8118aac7>] mem_cgroup_uncharge_page+0x57/0x60
 [<ffffffff8115fbc0>] page_remove_rmap+0xe0/0x150
 [<ffffffff8115311a>] ? vm_normal_page+0x1a/0x80
 [<ffffffff81153e61>] unmap_single_vma+0x531/0x870
 [<ffffffff81154962>] unmap_vmas+0x52/0xa0
 [<ffffffff81007442>] ? pte_mfn_to_pfn+0x72/0x100
 [<ffffffff8115c8f8>] exit_mmap+0x98/0x170
 [<ffffffff810050d9>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e
 [<ffffffff81059ce3>] mmput+0x83/0xf0
 [<ffffffff810624c4>] exit_mm+0x104/0x130
 [<ffffffff8106264a>] do_exit+0x15a/0x8c0
 [<ffffffff810630ff>] do_group_exit+0x3f/0xa0
 [<ffffffff81063177>] sys_exit_group+0x17/0x20
 [<ffffffff8162bae9>] system_call_fastpath+0x16/0x1b

Calling arch_flush_lazy_mmu_mode immediately after set_pgd makes the
changes visible to the consistency checks.

Cc: <stable@vger.kernel.org>
RedHat-Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=914737
Tested-by: Josh Boyer <jwboyer@redhat.com>
Reported-and-Tested-by: Krishna Raman <kraman@redhat.com>
Signed-off-by: Samu Kallio <samu.kallio@aberdeencloud.com>
Link: http://lkml.kernel.org/r/1364045796-10720-1-git-send-email-konrad.wilk@oracle.com
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-10 11:25:07 -07:00
Linus Torvalds
51de017007 NFS client bugfixes for Linux 3.9
- Fix a brain fart in nfs41_walk_client_list
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (GNU/Linux)
 
 iQIcBAABAgAGBQJRZZq5AAoJEGcL54qWCgDypU8P/0daWpe+a8TNpXDA0KdYZKYN
 KNXvZkNNk/TtSiQo5gPzRnD4CgZIZ4n+EX9U94gmdNr/UQz7xiL+bHZY4zFtQ574
 i+QMiLbf687anY7vLBL1eKOhKHeBMoIrk2G3iineEUhfzF97cqtgqIou1pSS/BCa
 2kk/w/LRWPOaMpr802y2p9R/mejRtDbTIwaPURTKA3Pw+odwiVib3FXMIoXDI5Iq
 QzH2fl+Q0me/Z2c5Y+KRs5X3gY1MWdhpZUbEpKy3iLAxlgl3gfp7Mxpb61dw5gBz
 Jl2F1lDOzYmU1Uqe88G7w38RnBD0Q7RWtlQzZFMeIQsk1TqPsx9ymFRxaZu1Q6HZ
 +hdpfVsFDhGNTvLZF4YSP4c7AS9s1yEj8erT8Ro90Ar/PuZi15N6HpDzHHAiIQWK
 HsqSLQBrW24cFk2Ybed7YVcFdNxHdR3DDYVVstodnhIw9VwDSvQfPBlhlPqF+Q/9
 onnAMsc6SqHnLhFV7yCF6tB0Of4ZPO0oIeW8C0Hrxo+sPly03BvasAvaSWr3uheh
 wqEtawNm9QQVMdWSA1hA0LV6P887yTRXruT83uC14doPlz5g0hxlvAZQfDC3Ld3J
 ae4HARv3LLFj7Dk9/9yyM6FELyTIe8YvqvH8u9QenPQEmW0VlaPVp73vPEhL5yPA
 TxWSJtquxq5ajpH5lBeI
 =G1ZG
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-3.9-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull another nfs fixlet from Trond Myklebust:
 "I suddenly noticed that a one-line issue that I _thought_ I had fixed
  with the nfs41_walk_client_list patch was apparently still there in
  the pull request I sent earlier today.  I'm very sorry for not
  catching that in time.

   - Fix a brain fart in nfs41_walk_client_list"

* tag 'nfs-for-3.9-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Doh! Typo in the fix to nfs41_walk_client_list
2013-04-10 10:26:49 -07:00
Gregory CLEMENT
600468d068 arm: mvebu: Fix the irq map function in SMP mode
This patch fix the regression introduced by the commit 3202bf0157
"arm: mvebu: Improve the SMP support of the interrupt controller":
GPIO IRQ were no longer delivered to the CPUs.

To be delivered to a CPU an interrupt must be enabled at CPU level and
at interrupt source level. Before the offending patch, all the
interrupts were enabled at source level during map() function. Mask()
and unmask() was done by handling the per-CPU part. It was fine when
running in UP with only one CPU.

The offending patch added support for SMP, in this case mask() and
unmask() was done by handling the interrupt source level part. The
per-CPU level part was handled by the affinity API to select the CPU
which will receive the interrupt. (Due to some hardware limitation
only one CPU at a time can received a given interrupt).

For "normal" interrupt __setup_irq() was called when an irq was
registered. irq_set_affinity() is called from this function, which
enabled the interrupt on one of the CPUs. Whereas for GPIO IRQ which
were chained interrupts, the irq_set_affinity() was never called and
none of the CPUs was selected to receive the interrupt.

With this patch all the interrupt are enable on the current CPU during
map() function. Enabling the interrupts on a CPU doesn't depend
anymore on irq_set_affinity() and then the chained irq are not anymore
a special case. However the CPU which will receive the irq can still
be modify later using irq_set_affinity().

Tested with Mirabox (A370) and Openblocks AX3 (AXP), rootfs mounted
over NFS, compiled with CONFIG_SMP=y/N.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Reported-by: Ryan Press <ryan@presslab.us>
Investigated-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Ryan Press <ryan@presslab.us>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-04-10 16:59:14 +00:00
Trond Myklebust
eb04e0ac19 NFSv4: Doh! Typo in the fix to nfs41_walk_client_list
Make sure that we set the status to 0 on success. Missed in testing
because it never appears when doing multiple mounts to _different_
servers.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: <stable@vger.kernel.org> # 3.7.x: 7b1f1fd: NFSv4/4.1: Fix bugs in nfs4[01]_walk_client_list
2013-04-10 12:57:29 -04:00
Nigel Roberts
aaaf165b24 Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-04-10 16:50:58 +00:00
Linus Torvalds
f94eeb423b NFS client bugfixes for Linux 3.9
- Stable fix for memory corruption issues in nfs4[01]_walk_client_list
 - Stable fix for an Oopsable bug in rpc_clone_client
 - Another state manager deadlock in the NFSv4 open code
 - Memory leaks in nfs4_discover_server_trunking and rpc_new_client
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (GNU/Linux)
 
 iQIcBAABAgAGBQJRZYu9AAoJEGcL54qWCgDySfwP/R2IdO2nfRzmDCPtvD6pPg8T
 l8Gf97Z/8A3g6WwfvmKNt48D1fKnhAcOaKTZQIZuZePAjI/Yy74DFMof6paiDmsO
 8hMcZgvunZotPwmBmhIwmLOxDYgbpdizDBlITsimnUQLrv78bMw2F/cNCcThYgTI
 Q4sNpZsl4kk1nmOYK/tGBCCkq6mIQhc95QeQPgnl2B/NozpZiIqgzrpWpSWMofn2
 cuSLiuEdmpCdJbgQaPEjSWf+doo/nBn720+Xj2RjmLhTTnWUtAsouElAdMs96Jjz
 cEhSll3nLIygr1xdFF7CD8qFjpbtg/YNhKw3HBCFAgHjrAjr+a3N+eHQOz9QQ6W4
 5OL3Mj0VEkvMrK1Sy76smynQJMJhrsn852Zo2wK2mCp+mHNZlBlML529Y4PJy2Ba
 Up4MteIaOTpKGSnBdzWmqPqro9glqlhrUk/o3XipCzIziWC8yDYjl2J9Ez8B7Ren
 uzvBeevYRX9AmQlmZUAPvx8+xVqA6cr0X2q8/6PqPnrNXP6Ff8+rm6gvH4VozyzJ
 qd/r7Bf1ozFXxoKQOztSiGjI5YiBp4DRXycR5td6eF3nZJipmbxY+WKllhaAakn6
 UY2NsGX2zfxkJMltqd2/xRmHtN+Eif1Uoo35pvzNxzBtPsRxBMIiPhGLglQu98Yj
 2NuwfT4//UNfS6JlBe6E
 =kBf2
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-3.9-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 - fix for memory corruption issues in nfs4[01]_walk_client_list (stable)
 - fix for an Oopsable bug in rpc_clone_client (stable)
 - another state manager deadlock in the NFSv4 open code
 - memory leaks in nfs4_discover_server_trunking and rpc_new_client

* tag 'nfs-for-3.9-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Fix another potential state manager deadlock
  SUNRPC: Fix a potential memory leak in rpc_new_client
  NFSv4/4.1: Fix bugs in nfs4[01]_walk_client_list
  NFSv4: Fix a memory leak in nfs4_discover_server_trunking
  SUNRPC: Remove extra xprt_put()
2013-04-10 09:00:51 -07:00
Peter Ujfalusi
7650246978 dmaengine: omap-dma: Start DMA without delay for cyclic channels
cyclic DMA is only used by audio which needs DMA to be started without a
delay.
If the DMA for audio is started using the tasklet we experience random
channel switch (to be more precise: channel shift).

Reported-by: Peter Meerwald <pmeerw@pmeerw.net>
CC: stable@vger.kernel.org  # v3.7+
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-04-10 10:33:30 +05:30
Linus Torvalds
d02a9a89db Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes a GCM bug that breaks IPsec and a compile problem in
  ux500."

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ux500 - add missing comma
  crypto: gcm - fix assumption that assoc has one segment
2013-04-09 20:19:50 -07:00
Linus Torvalds
49b442caa4 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Just a spare semicolon in nouveau that caused some issues, and an
  mgag200 fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/mgag200: Index 24 in extended CRTC registers is 24 in hex, not decimal.
  drm/nouveau: fix unconditional return waiting on memory
2013-04-09 17:41:26 -07:00
Peter Hurley
39f610e40e tty: Fix race condition if flushing tty flip buffers
As Ilya Zykov identified in his patch 'PROBLEM: Race condition in
tty buffer's function flush_to_ldisc()', a race condition exists
which allows a parallel flush_to_ldisc() to flush and free the tty
flip buffers while those buffers are in-use. For example,

  CPU 0                         |  CPU 1                                  |  CPU 2
                                | flush_to_ldisc()                        |
                                |  grab spin lock                         |
tty_buffer_flush()              |                                         | flush_to_ldisc()
 wait for spin lock             |                                         |  wait for spin lock
                                |   if (!test_and_set_bit(TTYP_FLUSHING)) |
                                |    while (next flip buffer)             |
                                |     ...                                 |
                                |     drop spin lock                      |
  grab spin lock                |                                         |
   if (test_bit(TTYP_FLUSHING)) |                                         |
    set_bit(TTYP_FLUSHPENDING)  |      receive_buf()                      |
    drop spin lock              |                                         |
                                |                                         |   grab spin lock
                                |                                         |    if (!test_and_set_bit(TTYP_FLUSHING))
                                |                                         |    if (test_bit(TTYP_FLUSHPENDING))
                                |                                         |    __tty_buffer_flush()

CPU 2 has just flushed and freed all tty flip buffers while CPU 1 is
transferring data from the head flip buffer.

The original patch was rejected under the assumption that parallel
flush_to_ldisc() was not possible. Because of necessary changes to
the workqueue api, work items can execute in parallel on SMP.

This patch differs slightly from the original patch by testing for
a pending flush _after_ each receive_buf(), since TTYP_FLUSHPENDING
can only be set while the lock is dropped around receive_buf().

Reported-by: Ilya Zykov <linux@izyk.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Ilya Zykov <linux@izyk.ru>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-09 17:05:02 -07:00
Christopher Harvey
1812a3db08 drm/mgag200: Index 24 in extended CRTC registers is 24 in hex, not decimal.
This change properly enables the "requester" in G200ER cards that is
responsible for getting pixels out of memory and clocking them out to
the screen.

Signed-off-by: Christopher Harvey <charvey@matrox.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-04-10 09:48:24 +10:00
Namhyung Kim
83e03b3fe4 tracing: Fix double free when function profile init failed
On the failure path, stat->start and stat->pages will refer same page.
So it'll attempt to free the same page again and get kernel panic.

Link: http://lkml.kernel.org/r/1364820385-32027-1-git-send-email-namhyung@kernel.org

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-04-09 18:54:04 -04:00
Mark Salter
f934af05cb add memory barrier to arch_local_irq_restore
arch_local_irq_save() and friends are required to act as compiler
memory barriers. This patch adds a "memory" clobber to the inline
asm code in arch_local_irq_restore() which is used as the building
block for other functions needing to set/clear the interrupt enable
in the CSR register.

Signed-off-by: Mark Salter <msalter@redhat.com>
2013-04-09 15:35:46 -04:00
Linus Torvalds
e8f2b548de Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
 "A nasty bug in fs/namespace.c caught by Andrey + a couple of less
  serious unpleasantness - ecryptfs misc device playing hopeless games
  with try_module_get() and palinfo procfs support being...  not quite
  correctly done, to be polite."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  mnt: release locks on error path in do_loopback
  palinfo fixes
  procfs: add proc_remove_subtree()
  ecryptfs: close rmmod race
2013-04-09 12:22:49 -07:00
Linus Torvalds
43ecdb0d31 vfio overflow fix for v3.9-rc7
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (GNU/Linux)
 
 iQIcBAABAgAGBQJRZFl9AAoJECObm247sIsiR0IQAItF0d9Q1AbLt1TYUa3E3yjd
 SMb3h3ItHcpT/LgpqpG31FxvADYsDAPFPs7h5HfrFJPsh8BKaWdEW3UcBgTxqMn1
 xgiLM+BeePJU/ccqYBLeFhNl88A/apYhM306b5r5lNuuzsfdX2o1F/N0aaN9qV0p
 A9PMjfRaagSj3B2uApA8ggQgMjSTUZ4VZnP4B615ZDbBJHBv17moXwd49HR6ubBM
 wvYXdktDZTl3ImNrPAX2bHzAfv0777EuTuA+Gl5ngMBiZCl6N7MXmxcwbC46TtHN
 unJ+YfnVCIiM7Ace7EiEBl6eM+VUnczmuNFWT6s6rFKYhkbj0o9cp2S73fIz+hmn
 bb31RjW/kIIkxPW/CJOF2Yve4P83OW8Fwj180FiVAZaBEQaATnSQSk9FjZtzDgpF
 RypiKh0bNUDpim7Kdse3bm+1pK+EDc5bNzMMV+438DAs9VO1sLirqaYiG4LMc4Uz
 wJToAfkYVTwgf22m5dWAOnU9Llik8WXHGe75VNJ4MjfHYgTZ4lLiMa7ZmHCcIfxv
 B/HdlK/5tqJyWpBsvObnli5YJ9tcsiaYeaRv9261FHqHZPajL82okED4gepfxg6Z
 0bX5MxQyNybMxnDo+VPzLtDpnynGRseN5Ujy/MWvLwXg7e+QXv8nmBogJHnLykA4
 8mLP7tkn4MrTL5WqtMs3
 =fEXv
 -----END PGP SIGNATURE-----

Merge tag 'vfio-v3.9-rc7' of git://github.com/awilliam/linux-vfio

Pull vfio overflow fix from Alex Williamson.

* tag 'vfio-v3.9-rc7' of git://github.com/awilliam/linux-vfio:
  vfio-pci: Fix possible integer overflow
2013-04-09 12:07:01 -07:00
Linus Torvalds
27387dd8c6 for-linus-20130409
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABCAAGBQJRZCnRAAoJEPfTWPspceCmQD0QAMS6a7kYln9n7ByzMa1rfm7x
 Mhu3NkT3I34a5+hgdiIwWTjqJ2Uu78S5pD522eAP4m9yGcG7m1c3aqdTEewDck7K
 xcIjgzS1j1J/XRlrtgPxJhsiA23Kzhliwztrr1YhczWLMijvIrNu2KYZ4EK4/YPB
 KkdGJJitunrOw4nhmnB1AYCRJoZJ5KXOpigqVr7vxTh0Ye7ue2k9mDD3x6tOp/Q0
 TxKxXyEZF9yHgUkpARMcy4OEcr63APfAeiAnZOPpdK5rbCc8pVXpoadLE8UipnlI
 0FcGBzuEezQE3FZrT9PL58FFNEPUmx3NWz2SwYV7Te5Gw5Zw/ffMxk8geE12ALmb
 YuULHGOxz97rxjFImYYGqIOQl7F6V59bYgbXegmKnWjorKEn6LxHyNI1Q76oH5V3
 UgvkmTK91yNa6DvB24Vrt1yKb3GvKQApHAwEn82y+LqcZFkWq1iKqlPVNNGGjCbR
 j47Qu4G/6Bif0vTFC34ciI79ga/di4S4FUOCthsjskm7waDUNvrlbP4Mvwq1VPAc
 VZaYGrQcWCDxuAY/S3XTR+2ci/B0n4Fhyn/iFg/6S+nQawJDeiM+C3yVDbH8caq4
 wV2PXEQ/r+SII4PVGFAmATewUKF3dkUpT2TKhc9KRHZh9+mFBXFj13MZ3+WpBPHl
 NTvEyi5nUL+MdyZGuJUi
 =CB+W
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20130409' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "I've got a few smaller fixes queued up for 3.9 that should go in.  The
  major one is the loop regression, the others are nice fixes on their
  own though.  It contains:

   - Fix for unitialized var in the block sysfs code, courtesy of Arnd
     and gcc-4.8.

   - Two fixes for mtip32xx, fixing probe and command timeout.  Also a
     debug measure that could have waited for 3.10, but it's driver
     only, so I let it slip in.

   - Revert the loop partition cleanup fix, it could cause a deadlock on
     auto-teardown as part of umount.  The fix is clear, but at this
     point we just want to revert it and get a real fix in for 3.10."

* tag 'for-linus-20130409' of git://git.kernel.dk/linux-block:
  Revert "loop: cleanup partitions when detaching loop device"
  mtip32xx: fix two smatch warnings
  mtip32xx: Add debugfs entry device_status
  mtip32xx: return 0 from pci probe in case of rebuild
  mtip32xx: recovery from command timeout
  block: avoid using uninitialized value in from queue_var_store
2013-04-09 12:05:41 -07:00
Andrey Vagin
e9c5d8a562 mnt: release locks on error path in do_loopback
do_loopback calls lock_mount(path) and forget to unlock_mount
if clone_mnt or copy_mnt fails.

[   77.661566] ================================================
[   77.662939] [ BUG: lock held when returning to user space! ]
[   77.664104] 3.9.0-rc5+ #17 Not tainted
[   77.664982] ------------------------------------------------
[   77.666488] mount/514 is leaving the kernel with locks still held!
[   77.668027] 2 locks held by mount/514:
[   77.668817]  #0:  (&sb->s_type->i_mutex_key#7){+.+.+.}, at: [<ffffffff811cca22>] lock_mount+0x32/0xe0
[   77.671755]  #1:  (&namespace_sem){+++++.}, at: [<ffffffff811cca3a>] lock_mount+0x4a/0xe0

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:09:50 -04:00
Al Viro
ccf932042f palinfo fixes
* check for proc_mkdir() failures
	* fix buffer overrun - sizeof(format string) is *not* enough to
hold sprintf() result.
	* use proc_remove_subtree(); life's much easier with it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:09:44 -04:00
Al Viro
8ce584c741 procfs: add proc_remove_subtree()
just what it sounds like; do that only to procfs subtrees you've
created - doing that to something shared with another driver is
not only antisocial, but might cause interesting races with
proc_create() and its ilk.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:09:17 -04:00
Al Viro
52f21999c7 ecryptfs: close rmmod race
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:08:16 -04:00