Commit Graph

518956 Commits

Author SHA1 Message Date
Martin Schwidefsky a1c843b825 s390/mm: change swap pte encoding and pgtable cleanup
After the file ptes have been removed the bit combination used to
encode non-linear mappings can be reused for the swap ptes. This
frees up a precious pte software bit. Reflect the change in the
swap encoding in the comments and do some cleanup while we are
at it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:56:20 +02:00
Martin Schwidefsky b7d14f3a92 s390/mm: correct transfer of dirty & young bits in __pmd_to_pte
The dirty & young bit from the pmd is not copied correctly to the
pseudo pte in __pmd_to_pte. In fact it is not copied at all, the
bits get lost. As the old style huge page currently does not need
the dirty & young information this has no effect, but may be needed
in the future.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:56:20 +02:00
Heiko Carstens 77a87f0cb1 s390/bpf: add dependency to z196 features
The new ebpf code uses e.g. the laal instruction which is part of the
interlocked-access facility 1 which again was introduced with z196.

So we must make sure the ebpf code generator depends on MARCH_Z196_FEATURES.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2015-04-23 16:55:50 +02:00
Christophe Jaillet 0a7c501e67 s390/3215: free memory in error path
If one memory allocation fails, there is a memory leak.

Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:55:50 +02:00
Martin Schwidefsky 0b46e0a3ec s390/kvm: remove delayed reallocation of page tables for KVM
Replacing a 2K page table with a 4K page table while a VMA is active
for the affected memory region is fundamentally broken. Rip out the
page table reallocation code and replace it with a simple system
control 'vm.allocate_pgste'. If the system control is set the page
tables for all processes are allocated as full 4K pages, even for
processes that do not need it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:55:49 +02:00
Martin Schwidefsky 7e01b5acd8 kexec: allocate the kexec control page with KEXEC_CONTROL_MEMORY_GFP
Introduce KEXEC_CONTROL_MEMORY_GFP to allow the architecture code
to override the gfp flags of the allocation for the kexec control
page. The loop in kimage_alloc_normal_control_pages allocates pages
with GFP_KERNEL until a page is found that happens to have an
address smaller than the KEXEC_CONTROL_MEMORY_LIMIT. On systems
with a large memory size but a small KEXEC_CONTROL_MEMORY_LIMIT
the loop will keep allocating memory until the oom killer steps in.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:52:01 +02:00
Steven Miao 37557178a0 dma: fix build error after update to v3.19
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:33 +08:00
Steven Miao 1a3372bc52 blackfin: io: define __raw_readx/writex with bfin_readx/writex
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:33 +08:00
Scott Jiang b3df664b85 bf609: add resources for lcd nl8048
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:32 +08:00
Aaron Wu ef7dcaf1e7 pm: sometimes wake up from suspend to RAM would fail
Sometimes it fails to wake up from suspend to RAM, this is because
we would flush the data cache by assemble command FLUSHINV before
suspend to RAM, and there is a delay between this command execution
and cache flush completion. Add a 1uS delay to works around this.

Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
2015-04-23 21:34:32 +08:00
Andre Wolokita bb717b33aa debug-mmrs: Eliminate all traces of the USB_PHY_TEST MMR
Interacting with the USB_PHY_TEST MMR through debugfs was causing wide-spread
chaos in the realm (kernel panic). Expunge all references to this demonic
register.

Signed-off-by: Andre Wolokita <Andre.Wolokita@analog.com>
2015-04-23 21:34:31 +08:00
Sonic Zhang f7fee0366c bf609: remove softswitch i2c configuration from adv7842 and adv7511 platform data
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:30 +08:00
Sonic Zhang 199aad16d5 bf609: add platform data for soft switch devices on the video extenders
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:29 +08:00
Sonic Zhang 707e6f0bc4 bf609: enable soft switch gpio driver by default
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:29 +08:00
Sonic Zhang ea9b706b86 bf609: add gpio soft switch platform data for mcp23017 i2c devices
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:28 +08:00
Scott Jiang 374feb1f04 bf609: use new SND_BF6XX_PCM to choose audio pcm driver
There is a new bf6xx audio dma driver, so we don't reuse
bf5xx i2s pcm driver again.

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
2015-04-23 21:34:27 +08:00
Sonic Zhang a0f4207d03 bug[220] kgdb: change the smp cross core function entry
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:26 +08:00
Rickard Strandqvist 4eb147c83f arch: blackfin: kernel: setup.c: Cleaning up missing null-terminate in conjunction with strncpy
Replacing strncpy with strlcpy to avoid strings that lacks null terminate.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:25 +08:00
Steven Miao 2fcc440ca6 blackfin: defconfigs: cleanup unused CONFIG_MTD_CHAR, add MTD_SPI_NOR for BF537-STAMP
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:23 +08:00
Shobhit Kumar c264f1110d pwm: Remove __init initializer for pwm_add_table()
For platforms that don't support DT, some early MFD modules can register
lookup tables. Remove the __init annotation so that this works. This is
similar to gpio_add_lookup_table() which allows late additions.

CC: Samuel Ortiz <sameo@linux.intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2015-04-23 14:50:52 +02:00
Kailang Yang d32b66668c ALSA: hda/realtek - Fix Headphone Mic doesn't recording for ALC256
Switch default pcbeep path to Line in path.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Tested-by: Hui Wang <hui.wang@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-23 12:03:48 +02:00
Vinod Koul 8faf141a99 ASoC: Intel: fix the makefile for atom code
The tom code should be using SND_SST_MFLD_PLATFORM and not the baytrail one.
So fix it now

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-23 10:32:48 +01:00
Aneesh Kumar K.V 2e826695d8 powerpc/mm: Fix build error with CONFIG_PPC_TRANSACTIONAL_MEM disabled
This fix the below build error

arch/powerpc/mm/hash_utils_64.c: In function ‘flush_hash_hugepage’:
arch/powerpc/mm/hash_utils_64.c:1381:1: error: label at end of compound statement
 tm_abort:
 ^
make[1]: *** [arch/powerpc/mm/hash_utils_64.o] Error 1

Reported-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-04-23 17:42:14 +10:00
Guenter Roeck 04fca0e390 frv: add io{read,write}{16,32}be functions
These functions are used in various drivers, including the latest
version of the 8250 driver. The latter causes the following build
failure.

drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_out':
drivers/tty/serial/8250/8250_core.c:456:2: error:
			implicit declaration of function 'iowrite32be'
drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_in':
drivers/tty/serial/8250/8250_core.c:462:2: error:
			implicit declaration of function 'ioread32be'

Cc: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: c627f2ceb6 ("serial: 8250: Add support for big-endian MMIO
	accesses")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-22 22:38:21 -05:00
Guenter Roeck 601e3ad9de mn10300: add io{read,write}{16,32}be functions
These functions are used in various drivers, including the latest
version of the 8250 driver. The latter causes the following build failure.

drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_out':
drivers/tty/serial/8250/8250_core.c:456:2: error:
			implicit declaration of function 'iowrite32be'
drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_in':
drivers/tty/serial/8250/8250_core.c:462:2: error:
			implicit declaration of function 'ioread32be'

Cc: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: c627f2ceb6 ("serial: 8250: Add support for big-endian MMIO
	accesses")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-22 22:37:56 -05:00
Dinh Nguyen f3b07b8611 Documentation: DT bindings: add doc for Altera's SoCFPGA platform
Document "altr,socfpga-cyclone5", "altr,socfpga-arria5", and
"altr,socfpga-arria10".

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-22 22:37:22 -05:00
Li RongQing 608404290e vxlan: remove the unnecessary codes
The return value of vxlan_fdb_replace always is greater than or equal to 0

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 18:45:49 -04:00
Ben Shelton 21d3515ce7 net/macb: Factor out one-time assignment from loop
In 02c958dd3 (net/macb: add TX multiqueue support for gem), the
initialization of tx_head and tx_tail in macb_init_rings() was moved
inside the loop that iterates over each element in the ring.  Since
tx_head and tx_tail only need to be assigned once, move them back out of
the loop.

Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 18:34:56 -04:00
Linus Torvalds 27cf3a16b2 Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
Pull audit fixes from Paul Moore:
 "Seven audit patches for v4.1, all bug fixes.

  The largest, and perhaps most significant commit helps resolve some
  memory pressure issues related to the inode cache and audit, there are
  also a few small commits which help resolve some timing issues with
  the audit log queue, and the rest fall into the always popular "code
  clean-up" category.

  In general, nothing really substantial, just a nice set of maintenance
  patches"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: Remove condition which always evaluates to false
  audit: reduce mmap_sem hold for mm->exe_file
  audit: consolidate handling of mm->exe_file
  audit: code clean up
  audit: don't reset working wait time accidentally with auditd
  audit: don't lose set wait time on first successful call to audit_log_start()
  audit: move the tree pruning to a dedicated thread
2015-04-22 14:49:23 -07:00
Eric Dumazet 79930f5892 net: do not deplete pfmemalloc reserve
build_skb() should look at the page pfmemalloc status.
If set, this means page allocator allocated this page in the
expectation it would help to free other pages. Networking
stack can do that only if skb->pfmemalloc is also set.

Also, we must refrain using high order pages from the pfmemalloc
reserve, so __page_frag_refill() must also use __GFP_NOMEMALLOC for
them. Under memory pressure, using order-0 pages is probably the best
strategy.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 16:24:59 -04:00
Charles Keepax a2d97723cb ASoC: dapm: Enable autodisable on SOC_DAPM_SINGLE_TLV_AUTODISABLE
Correct small copy and paste error where autodisable was not being
enabled for the SOC_DAPM_SINGLE_TLV_AUTODISABLE control.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2015-04-22 20:51:00 +01:00
Johannes Berg 26349c71b4 ip6_gre: use netdev_alloc_pcpu_stats()
The code there just open-codes the same, so use the provided macro instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 15:39:05 -04:00
Linus Torvalds a62d016cec Common MTD:
* Add Kconfig option for keeping both the 'master' and 'partition' MTDs
    registered as devices. This would really make a better default if we could
    do it over, as it allows a lot more flexibility in (1) determining the flash
    topology of the system from user-space and (2) adding temporary partitions
    at runtime (ioctl(BLKPG)). Unfortunately, this would possibly cause
    user-space breakage, as it will cause renumbering of the /dev/mtdX devices.
    We'll see if we can change this in the future, as there have already been a
    few people looking for this feature, and I know others have just been
    working around our current limitations instead of fixing them this way.
  * Along with the previous change, add some additional information to sysfs, so
    user-space can read the offset of each partition within its master device
 
 SPI NOR:
  * add new device tree compatible binding to represent the mostly-compatible
    class of SPI NOR flash which can be detected by their extended JEDEC ID
    bytes, cutting down the duplication of our ID tables
  * misc. new IDs
 
 Various other miscellaneous fixes and changes
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Merge tag 'for-linus-20150422' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 "Common MTD:

   - Add Kconfig option for keeping both the 'master' and 'partition'
     MTDs registered as devices.  This would really make a better
     default if we could do it over, as it allows a lot more flexibility
     in (1) determining the flash topology of the system from user-space
     and (2) adding temporary partitions at runtime (ioctl(BLKPG)).

     Unfortunately, this would possibly cause user-space breakage, as it
     will cause renumbering of the /dev/mtdX devices.  We'll see if we
     can change this in the future, as there have already been a few
     people looking for this feature, and I know others have just been
     working around our current limitations instead of fixing them this
     way.

   - Along with the previous change, add some additional information to
     sysfs, so user-space can read the offset of each partition within
     its master device

  SPI NOR:

   - add new device tree compatible binding to represent the
     mostly-compatible class of SPI NOR flash which can be detected by
     their extended JEDEC ID bytes, cutting down the duplication of our
     ID tables

   - misc.  new IDs

  Various other miscellaneous fixes and changes"

* tag 'for-linus-20150422' of git://git.infradead.org/linux-mtd: (53 commits)
  mtd: spi-nor: Add support for Macronix mx25u6435f serial flash
  mtd: spi-nor: Add support for Winbond w25q64dw serial flash
  mtd: spi-nor: add support for the Winbond W25X05 flash
  mtd: spi-nor: support en25s64 device
  mtd: m25p80: bind to "nor-jedec" ID, for auto-detection
  Documentation: devicetree: m25p80: add "nor-jedec" binding
  mtd: Make MTD tests cancelable
  mtd: mtd_oobtest: Fix bitflip_limit usage in test case 3
  mtd: docg3: remove invalid __exit annotations
  mtd: fsl_ifc_nand: use msecs_to_jiffies for time conversion
  mtd: atmel_nand: don't map the ROM table if no pmecc table offset in DT
  mtd: atmel_nand: add a definition for the oob reserved bytes
  mtd: part: Remove partition overlap checks
  mtd: part: Add sysfs variable for offset of partition
  mtd: part: Create the master device node when partitioned
  mtd: ts5500_flash: Fix typo in MODULE_DESCRIPTION in ts5500_flash.c
  mtd: denali: Disable sub-page writes in Denali NAND driver
  mtd: pxa3xx_nand: cleanup wait_for_completion handling
  mtd: nand: gpmi: Check for scan_bbt() error
  mtd: nand: gpmi: fixup return type of wait_for_completion_timeout
  ...
2015-04-22 12:00:44 -07:00
Linus Torvalds 7c034dfd58 InfiniBand/RDMA updates for 4.1:
- IPoIB fixes from Doug Ledford and Erez Shitrit
  - iSER updates from Sagi Grimberg
  - mlx4 GUID handling changes from Yishai Hadas
  - other misc fixes
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull InfiniBand/RDMA updates from Roland Dreier:

 - IPoIB fixes from Doug Ledford and Erez Shitrit

 - iSER updates from Sagi Grimberg

 - mlx4 GUID handling changes from Yishai Hadas

 - other misc fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (51 commits)
  mlx5: wrong page mask if CONFIG_ARCH_DMA_ADDR_T_64BIT enabled for 32Bit architectures
  IB/iser: Rewrite bounce buffer code path
  IB/iser: Bump version to 1.6
  IB/iser: Remove code duplication for a single DMA entry
  IB/iser: Pass struct iser_mem_reg to iser_fast_reg_mr and iser_reg_sig_mr
  IB/iser: Modify struct iser_mem_reg members
  IB/iser: Make fastreg pool cache friendly
  IB/iser: Move PI context alloc/free to routines
  IB/iser: Move fastreg descriptor pool get/put to helper functions
  IB/iser: Merge build page-vec into register page-vec
  IB/iser: Get rid of struct iser_rdma_regd
  IB/iser: Remove redundant assignments in iser_reg_page_vec
  IB/iser: Move memory reg/dereg routines to iser_memory.c
  IB/iser: Don't pass ib_device to fall_to_bounce_buff routine
  IB/iser: Remove a redundant struct iser_data_buf
  IB/iser: Remove redundant cmd_data_len calculation
  IB/iser: Fix wrong calculation of protection buffer length
  IB/iser: Handle fastreg/local_inv completion errors
  IB/iser: Fix unload during ep_poll wrong dereference
  ib_srpt: convert printk's to pr_* functions
  ...
2015-04-22 11:50:05 -07:00
Linus Torvalds 1204c46445 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph updates from Sage Weil:
 "This time around we have a collection of CephFS fixes from Zheng
  around MDS failure handling and snapshots, support for a new CRUSH
  straw2 algorithm (to sync up with userspace) and several RBD cleanups
  and fixes from Ilya, an error path leak fix from Taesoo, and then an
  assorted collection of cleanups from others"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (28 commits)
  rbd: rbd_wq comment is obsolete
  libceph: announce support for straw2 buckets
  crush: straw2 bucket type with an efficient 64-bit crush_ln()
  crush: ensuring at most num-rep osds are selected
  crush: drop unnecessary include from mapper.c
  ceph: fix uninline data function
  ceph: rename snapshot support
  ceph: fix null pointer dereference in send_mds_reconnect()
  ceph: hold on to exclusive caps on complete directories
  libceph: simplify our debugfs attr macro
  ceph: show non-default options only
  libceph: expose client options through debugfs
  libceph, ceph: split ceph_show_options()
  rbd: mark block queue as non-rotational
  libceph: don't overwrite specific con error msgs
  ceph: cleanup unsafe requests when reconnecting is denied
  ceph: don't zero i_wrbuffer_ref when reconnecting is denied
  ceph: don't mark dirty caps when there is no auth cap
  ceph: keep i_snap_realm while there are writers
  libceph: osdmap.h: Add missing format newlines
  ...
2015-04-22 11:30:10 -07:00
Linus Torvalds 4f2112351b This adds three fixes for the tracing code.
The first is a bug when ftrace_dump_on_oops is triggered in atomic context
 and function graph tracer is the tracer that is being reported.
 
 The second fix is bad parsing of the trace_events from the kernel
 command line, where it would ignore specific events if the system
 name is used with defining the event(it enables all events within the
 system).
 
 The last one is a fix to the TRACE_DEFINE_ENUM(), where a check was missing
 to see if the ptr was incremented to the end of the string, but the loop
 increments it again and can miss the nul delimiter to stop processing.
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Merge tag 'trace-v4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This adds three fixes for the tracing code.

  The first is a bug when ftrace_dump_on_oops is triggered in atomic
  context and function graph tracer is the tracer that is being
  reported.

  The second fix is bad parsing of the trace_events from the kernel
  command line, where it would ignore specific events if the system name
  is used with defining the event(it enables all events within the
  system).

  The last one is a fix to the TRACE_DEFINE_ENUM(), where a check was
  missing to see if the ptr was incremented to the end of the string,
  but the loop increments it again and can miss the nul delimiter to
  stop processing"

* tag 'trace-v4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix possible out of bounds memory access when parsing enums
  tracing: Fix incorrect enabling of trace events by boot cmdline
  tracing: Handle ftrace_dump() atomic context in graph_trace_open()
2015-04-22 11:27:36 -07:00
Linus Torvalds 9b60afee50 PCI updates for v4.1:
Resource management
     - ia64: Treat all Address Space Descriptors as windows (Bjorn Helgaas)
 
   Miscellaneous
     - MAINTAINERS: Remove Mohit Kumar (email bounces) (Bjorn Helgaas)
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Merge tag 'pci-v4.1-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "These fix an ia64 regression caused by tighter resource checking we
  merged during the merge window and remove an invalid email address
  from MAINTAINERS.

  Resource management:
    - ia64: Treat all Address Space Descriptors as windows (Bjorn Helgaas)

  Miscellaneous:
    - MAINTAINERS: Remove Mohit Kumar (email bounces) (Bjorn Helgaas)"

* tag 'pci-v4.1-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  ia64/PCI: Treat all host bridge Address Space Descriptors (even consumers) as windows
  MAINTAINERS: Remove Mohit Kumar (email bounces)
2015-04-22 11:26:00 -07:00
David S. Miller 0e2d686530 Merge branch 'mpls'
Robert Shearman says:

====================
mpls: ABI changes for security and correctness

V2:
 - don't treat loopback interfaces specially by enabling mpls by
   default

These changes make mpls not be enabled by default on all
interfaces when in use for security, along with ensuring that a label
not valid as an outgoing label can be added in mpls routes.

This series contains three ABI/behaviour-affecting changes which have
been split out from "[PATCH net-next v4 0/6] mpls: Behaviour-changing
improvements" without any further modification. These changes need to
be considered for 4.1 otherwise we'll be stuck with the current
behaviour/ABI forever.
====================

Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:24:55 -04:00
Robert Shearman 5a9ab01761 mpls: Prevent use of implicit NULL label as outgoing label
The reserved implicit-NULL label isn't allowed to appear in the label
stack for packets, so make it an error for the control plane to
specify it as an outgoing label.

Suggested-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:24:54 -04:00
Robert Shearman 37bde79979 mpls: Per-device enabling of packet input
An MPLS network is a single trust domain where the edges must be in
control of what labels make their way into the core. The simplest way
of ensuring this is for the edge device to always impose the labels,
and not allow forward labeled traffic from untrusted neighbours. This
is achieved by allowing a per-device configuration of whether MPLS
traffic input from that interface should be processed or not.

To be secure by default, the default state is changed to MPLS being
disabled on all interfaces unless explicitly enabled and no global
option is provided to change the default. Whilst this differs from
other protocols (e.g. IPv6), network operators are used to explicitly
enabling MPLS forwarding on interfaces, and with the number of links
to the MPLS core typically fairly low this doesn't present too much of
a burden on operators.

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:24:54 -04:00
Robert Shearman 03c57747a7 mpls: Per-device MPLS state
Add per-device MPLS state to supported interfaces. Use the presence of
this state in mpls_route_add to determine that this is a supported
interface.

Use the presence of mpls_dev to drop packets that arrived on an
unsupported interface - previously they were allowed through.

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:24:54 -04:00
Yuval Mintz 909d9faae2 bnx2x: Prevent inner-reload while VFs exist
On some feature changes, driver employes an inner-reload flow where it
resets the function and re-configures it with the new required set of
parameters.

Such a flow proves fatal to any VF since those were not intended to be used
while HW is being reset underneath, causing them [at best] to lose all
connectivity.

This changes driver behavior to fail all configuration changes [e.g., mtu
change] requested of the driver in case VFs are active.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:23:31 -04:00
Linus Torvalds 7dcca3e92a Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
 "This contains following changes:

   - Octeon: convert to watchdog-API and apply some fixes
   - Cadence wdt: remove dependency on ARCH
   - add DT bindings for qcom + msm
   - bcm281xx: Remove use of seq_printf return value
   - stmp3xxx_rtc_wdt + pnx4008_wdt: fix broken email addresses"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: stmp3xxx_rtc_wdt: fix broken email address
  watchdog: pnx4008_wdt: fix broken email address
  watchdog: octeon: use fixed length string for register names
  watchdog: octeon: fix some trivial coding style issues
  watchdog: octeon: convert to WATCHDOG_CORE API
  watchdog: cadence: Remove Kconfig dependency on ARCH
  ARM: msm: add watchdog entries to DT timer binding doc
  ARM: qcom: add description of KPSS WDT for IPQ8064
  watchdog: qcom: use timer devicetree binding
  watchdog: bcm281xx: Remove use of seq_printf return value
2015-04-22 11:22:55 -07:00
David S. Miller a2c3935aaa Merge branch 'rhashtable-fixes'
Thomas Graf says:

====================
rhashtable rehashing fixes

Some rhashtable rehashing bugs found while testing with the
next rhashtable self-test queued up for the next devel cycle:

https://github.com/tgraf/net-next/commits/rht

v2:
 - Moved schedule_work() call into rhashtable_insert_rehash()
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:17:23 -04:00
Thomas Graf a87b9ebf17 rhashtable: Do not schedule more than one rehash if we can't grow further
The current code currently only stops inserting rehashes into the
chain when no resizes are currently scheduled. As long as resizes
are scheduled and while inserting above the utilization watermark,
more and more rehashes will be scheduled.

This lead to a perfect DoS storm with thousands of rehashes
scheduled which lead to thousands of spinlocks to be taken
sequentially.

Instead, only allow either a series of resizes or a single rehash.
Drop any further rehashes and return -EBUSY.

Fixes: ccd57b1bd3 ("rhashtable: Add immediate rehash during insertion")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:17:22 -04:00
Thomas Graf e2307ed6cb rhashtable: Schedule async resize when sync realloc fails
When rhashtable_insert_rehash() fails with ENOMEM, this indicates that
we can't allocate the necessary memory in the current context but the
limits as set by the user would still allow to grow.

Thus attempt an async resize in the background where we can allocate
using GFP_KERNEL which is more likely to succeed. The insertion itself
will still fail to indicate pressure.

This fixes a bug where the table would never continue growing once the
utilization is above 100%.

Fixes: ccd57b1bd3 ("rhashtable: Add immediate rehash during insertion")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:17:22 -04:00
Eric Dumazet d83769a580 tcp: fix possible deadlock in tcp_send_fin()
Using sk_stream_alloc_skb() in tcp_send_fin() is dangerous in
case a huge process is killed by OOM, and tcp_mem[2] is hit.

To be able to free memory we need to make progress, so this
patch allows FIN packets to not care about tcp_mem[2], if
skb allocation succeeded.

In a follow-up patch, we might abort tcp_send_fin() infinite loop
in case TIF_MEMDIE is set on this thread, as memory allocator
did its best getting extra memory already.

This patch reverts d22e153718 ("tcp: fix tcp fin memory accounting")

Fixes: d22e153718 ("tcp: fix tcp fin memory accounting")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-22 14:13:11 -04:00
Linus Torvalds b9bb6fb73b Some virtio internal cleanups, a new virtio device "virtio input", and
a change to allow the legacy virtio balloon.
 
 Most excitingly, some lguest work!  No seriously, I got some cleanup
 patches.
 
 Cheers,
 Rusty.
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Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull virtio updates from Rusty Russell:
 "Some virtio internal cleanups, a new virtio device "virtio input", and
  a change to allow the legacy virtio balloon.

  Most excitingly, some lguest work! No seriously, I got some cleanup
  patches"

* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  virtio: drop virtio_device_is_legacy_only
  virtio_pci: support non-legacy balloon devices
  virtio_mmio: support non-legacy balloon devices
  virtio_ccw: support non-legacy balloon devices
  virtio: balloon might not be a legacy device
  virtio_balloon: transitional interface
  virtio_ring: Update weak barriers to use dma_wmb/rmb
  virtio_pci_modern: switch to type-safe io accessors
  virtio_pci_modern: type-safe io accessors
  lguest: handle traps on the "interrupt suppressed" iret instruction.
  virtio: drop a useless config read
  virtio_config: reorder functions
  Add virtio-input driver.
  lguest: suppress interrupts for single insn, not range.
  lguest: simplify lguest_iret
  lguest: rename i386_head.S in the comments
  lguest: explicitly set miscdevice's private_data NULL
  lguest: fix pending interrupt test.
2015-04-22 10:55:06 -07:00
Brian Norris 3e550d2396 Merge MTD fixes from 4.0 into -next 2015-04-22 10:29:19 -07:00
Linus Torvalds 15ce2658dd Quentin opened a can of worms by adding extable entry checking to modpost,
but most architectures seem fixed now.  Thanks to all involved.
 
 Last minute rebase because I noticed a "[PATCH]" had snuck into a commit
 message somehow.
 
 Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull module updates from Rusty Russell:
 "Quentin opened a can of worms by adding extable entry checking to
  modpost, but most architectures seem fixed now.  Thanks to all
  involved.

  Last minute rebase because I noticed a "[PATCH]" had snuck into a
  commit message somehow"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  modpost: don't emit section mismatch warnings for compiler optimizations
  modpost: expand pattern matching to support substring matches
  modpost: do not try to match the SHT_NUL section.
  modpost: fix extable entry size calculation.
  modpost: fix inverted logic in is_extable_fault_address().
  modpost: handle -ffunction-sections
  modpost: Whitelist .text.fixup and .exception.text
  params: handle quotes properly for values not of form foo="bar".
  modpost: document the use of struct section_check.
  modpost: handle relocations mismatch in __ex_table.
  scripts: add check_extable.sh script.
  modpost: mismatch_handler: retrieve tosym information only when needed.
  modpost: factorize symbol pretty print in get_pretty_name().
  modpost: add handler function pointer to sectioncheck.
  modpost: add .sched.text and .kprobes.text to the TEXT_SECTIONS list.
  modpost: add strict white-listing when referencing sections.
  module: do not print allocation-fail warning on bogus user buffer size
  kernel/module.c: fix typos in message about unused symbols
2015-04-22 09:49:24 -07:00