firefly-linux-kernel-4.4.55.git
8 years agommc: Extend wakelock if bus is dead
John Stultz [Fri, 4 Dec 2015 20:13:13 +0000 (12:13 -0800)]
mmc: Extend wakelock if bus is dead

This patch sets extend_wakelock if the host's
bus is marked dead due to card removal.

This change was originally made in bc4dc52f178828
(mmc: mmcblk: Add support for deferred SD bus resume),
which was reverted due to the majority of the patch
no longer building or making sense. However one small
part of that patch ought to be saved.

Signed-off-by: John Stultz <john.stultz@linaro.org>
8 years agommc: core: Hold a wake lock accross delayed work + mmc rescan
San Mehat [Mon, 23 Mar 2009 19:20:37 +0000 (12:20 -0700)]
mmc: core: Hold a wake lock accross delayed work + mmc rescan

Signed-off-by: San Mehat <san@android.com>
mmc: core: Rework mmc_delayed_work wakelock so that the wakelock is only extended if a card is added or removed.

Signed-off-by: San Mehat <san@google.com>
8 years agommc: Add concept of an 'embedded' SDIO device.
San Mehat [Mon, 14 Apr 2008 22:22:49 +0000 (15:22 -0700)]
mmc: Add concept of an 'embedded' SDIO device.

This is required to support chips which use SDIO for signaling/
communication but do not implement the various card enumeration registers
as required for full SD / SDIO cards.

mmc: sdio: Fix bug where we're freeing the CIS tables we never allocated when using EMBEDDED_SDIO
mmc: Add max_blksize to embedded SDIO data

Change-Id: Ibff2e3e991e5522f55ec8c6edc25ed09f2553736
Signed-off-by: San Mehat <san@google.com>
8 years agommc: sd: Add retries in re-detection
San Mehat [Thu, 4 Dec 2008 19:18:00 +0000 (11:18 -0800)]
mmc: sd: Add retries in re-detection

Signed-off-by: San Mehat <san@android.com>
mmc: sd: Remove debugging printk

Signed-off-by: Dima Zavin <dima@android.com>
8 years agommc: sd: When resuming, try a little harder to init the card
San Mehat [Mon, 1 Dec 2008 16:52:34 +0000 (08:52 -0800)]
mmc: sd: When resuming, try a little harder to init the card

Signed-off-by: San Mehat <san@android.com>
8 years agommc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD detection
San Mehat [Tue, 11 Nov 2008 17:35:36 +0000 (09:35 -0800)]
mmc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD detection

Signed-off-by: San Mehat <san@google.com>
8 years agommc: Add status IRQ and status callback function to mmc platform data
San Mehat [Tue, 11 Nov 2008 00:29:50 +0000 (16:29 -0800)]
mmc: Add status IRQ and status callback function to mmc platform data

Signed-off-by: San Mehat <san@google.com>
8 years agommc_block: Allow more than 8 partitions per card
Colin Cross [Fri, 3 Sep 2010 19:41:21 +0000 (12:41 -0700)]
mmc_block: Allow more than 8 partitions per card

Set the GENHD_FL_EXT_DEVT flag, which will allocate minor numbers
in major 259 for partitions past disk->minors.

Also remove the use of disk_devt to determine devidx from md->disk.
md->disk->first_minor is always initialized from devidx and can
always be used to recover it.

Signed-off-by: Colin Cross <ccross@android.com>
8 years agomtd: nand: Allow NAND chip ids to be included standalone.
Dima Zavin [Thu, 4 Dec 2008 20:19:57 +0000 (12:19 -0800)]
mtd: nand: Allow NAND chip ids to be included standalone.

Lets non-standard NAND drivers take advantage of known NAND
chip information.

Change-Id: I87e2fcb40b07b2ec91e102f1fa7f419a4b4af0a3
Signed-off-by: Dima Zavin <dima@android.com>
8 years agodrivers: switch: remove S_IWUSR from dev_attr
Qiao Zhou [Thu, 31 Oct 2013 01:36:50 +0000 (09:36 +0800)]
drivers: switch: remove S_IWUSR from dev_attr

it doesn't need S_IWUSR attribute since xxx_store API is un-needed.
otherwise the WARN check in device_create_file will alert.

Change-Id: I6360bf022dcd659bfb3f41c84624f954d5d15ea5
Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
8 years agogpio_input: convert from wakelocks to wakeup sources
Todd Poynor [Wed, 20 Jun 2012 04:06:47 +0000 (21:06 -0700)]
gpio_input: convert from wakelocks to wakeup sources

And add device names to wakeup source names

Change-Id: Ia5f2723319a2e749f00d6ec7d846edff6af6d5c2
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agohid-multitouch: Filter collections by application usage.
Jeff Brown [Sun, 24 Jul 2011 21:31:14 +0000 (14:31 -0700)]
hid-multitouch: Filter collections by application usage.

This change fixes two problems.

First, it ensures that the hid-multitouch driver does not incorrectly
map GenericDesktop usages that are intended for other applications,
such as a Mouse.

Second, it sets the appropriate input properties so that user-space
can distinguish TouchScreen devices (INPUT_PROP_DIRECT) from
TouchPad devices (INPUT_PROP_POINTER) and configure them accordingly.

Change-Id: I8c2d947929186ffe7cf04b37c76e29b9abecf8cb
Signed-off-by: jeffbrown@android.com
8 years agoHID: steelseries: validate output report details
Kees Cook [Wed, 11 Sep 2013 19:56:53 +0000 (21:56 +0200)]
HID: steelseries: validate output report details

A HID device could send a malicious output report that would cause the
steelseries HID driver to write beyond the output report allocation
during initialization, causing a heap overflow:

[  167.981534] usb 1-1: New USB device found, idVendor=1038, idProduct=1410
...
[  182.050547] BUG kmalloc-256 (Tainted: G        W   ): Redzone overwritten

CVE-2013-2891

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
8 years agoinput: Made keyreset more robust
Daniel Rosenberg [Fri, 27 Jun 2014 23:39:35 +0000 (16:39 -0700)]
input: Made keyreset more robust

Switched do_restart to run in a seperate workqueue to  handle
cases where kernel_restart hangs.

Change-Id: I1ecd61f8d0859f1a86d37c692351d644b5db9c69
Signed-off-by: Daniel Rosenberg <drosen@google.com>
8 years agoinput: Changed keyreset to act as a wrapper for keycombo.
Daniel Rosenberg [Wed, 7 May 2014 21:17:47 +0000 (14:17 -0700)]
input: Changed keyreset to act as a wrapper for keycombo.

keyreset now registers a keycombo driver that acts as the old
keyreset driver acted.

Change-Id: I08f5279e3a33b267571b699697f9f54508868983
Signed-off-by: Daniel Rosenberg <drosen@google.com>
8 years agoinput: add keycombo, a general key combo driver.
Daniel Rosenberg [Wed, 7 May 2014 23:52:10 +0000 (16:52 -0700)]
input: add keycombo, a general key combo driver.

Keycombo lets you provide a key up and key down function, and an
optional time delay for key down. The driver will call the key
down function after the specified key combo has been held for the
speicified time delay. After you release the combo, if the key down
has happened, it calls key up.

Change-Id: I6a9a94e96a8f58fadd908fd1dc7944b9102a089f
Signed-off-by: Daniel Rosenberg <drosen@google.com>
8 years agoinput: misc: keychord: move header to uapi
Colin Cross [Thu, 7 Nov 2013 20:46:33 +0000 (12:46 -0800)]
input: misc: keychord: move header to uapi

Move the entire contents of linux/keychord.h header to uapi, it only
contains a userspace interface.

Change-Id: If94f83328b19efb58c66391dce3bd8e927788d8d
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoinput: misc: keychord: log when keychord triggered
JP Abgrall [Tue, 5 Mar 2013 22:25:36 +0000 (14:25 -0800)]
input: misc: keychord: log when keychord triggered

log keychord id at info level just before waking up processes.

Signed-off-by: JP Abgrall <jpa@google.com>
8 years agoinput: keychord: Add keychord driver
Mike Lockwood [Mon, 15 Dec 2008 19:51:56 +0000 (14:51 -0500)]
input: keychord: Add keychord driver

This driver allows userspace to receive notification when client
specified key combinations are pressed.
The client opens /dev/keychord and writes a list of keychords
for the driver to monitor.
The client then reads or polls /dev/keychord for notifications.
A client specified ID for the keychord is returned from read()
when a keychord press is detected.

Signed-off-by: Mike Lockwood <lockwood@android.com>
keychord: fix to build without CONFIG_PREEMPT

Change-Id: I911f13aeda4224b6fa57863bc7e8972fec8837fb

8 years agoinput: Add keyreset driver.
Arve Hjønnevåg [Sat, 22 Nov 2008 05:47:23 +0000 (21:47 -0800)]
input: Add keyreset driver.

Add a platform device in the board file to specify a reset key-combo.
The first time the key-combo is detected a work function that syncs
the filesystems is scheduled. If all the keys are released and then
pressed again, it calls panic. Reboot on panic should be set for
this to work.

Change-Id: I9d54283ca1fba45e4b1ae1a407524cdda8171143
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoinput: misc: gpio_event: remove early suspend
Colin Cross [Thu, 2 Feb 2012 04:26:28 +0000 (20:26 -0800)]
input: misc: gpio_event: remove early suspend

Remove the early suspend handler.  Leave the suspend functions
for now, they should eventually get called through a userspace
interface.x

Change-Id: I67f9dafe32fe32577bab93c42b95824db96c215c
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoInput: Generic GPIO Input device.
Arve Hjønnevåg [Thu, 16 Oct 2008 01:23:47 +0000 (18:23 -0700)]
Input: Generic GPIO Input device.

Supports keyboard matrixces, direct inputs, direct outputs and axes connected to gpios.

Change-Id: I5e921e6e3a1cc169316ee3b665f4cc21b5735114
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Nick Pelly <npelly@google.com>
8 years agoswitch: switch class and GPIO drivers.
Mike Lockwood [Tue, 14 Oct 2008 16:50:16 +0000 (12:50 -0400)]
switch: switch class and GPIO drivers.

switch: Export symbol switch_set_state.

Signed-off-by: Mike Lockwood <lockwood@android.com>
switch: gpio: Don't call request_irq with interrupts disabled

Signed-off-by: Arve Hjønnevåg <arve@android.com>
switch: Use device_create instead of device_create_drvdata.

device_create_drvdata is obsolete.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
switch_gpio: Add missing #include <linux/interrupt.h>

Change-Id: I6c397e41bbe1457162cc69e31a29db5d9f76fccb
Signed-off-by: Mike Lockwood <lockwood@android.com>
8 years agolowmemorykiller: use module_param_cb instead of __module_param_call
Amit Pundir [Thu, 29 Oct 2015 19:46:29 +0000 (01:16 +0530)]
lowmemorykiller: use module_param_cb instead of __module_param_call

Use module_param_cb helper routine instead of
__module_param_call otherwise we run into following
build error:

  CC      drivers/staging/android/lowmemorykiller.o
drivers/staging/android/lowmemorykiller.c:293:28: error: macro "__module_param_call" requires 7 arguments, but only 6 given
       S_IRUGO | S_IWUSR, -1);
                            ^
drivers/staging/android/lowmemorykiller.c:290:1: warning: data definition has no type or storage class [enabled by default]
 __module_param_call(MODULE_PARAM_PREFIX, adj,
 ^
drivers/staging/android/lowmemorykiller.c:290:1: error: type defaults to ‘int’ in declaration of ‘__module_param_call’ [-Werror=implicit-int]
drivers/staging/android/lowmemorykiller.c:273:32: warning: ‘lowmem_adj_array_ops’ defined but not used [-Wunused-variable]
 static struct kernel_param_ops lowmem_adj_array_ops = {
                                ^
cc1: some warnings being treated as errors
make[3]: *** [drivers/staging/android/lowmemorykiller.o] Error 1

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agolowmemorykiller: trace kill events.
Martijn Coenen [Tue, 26 May 2015 09:28:47 +0000 (11:28 +0200)]
lowmemorykiller: trace kill events.

Allows for capturing lmk kill events and
their rationale.

Change-Id: Ibe215db5bb9806fc550c72c0b9832c85cbd56bf6
Signed-off-by: Martijn Coenen <maco@google.com>
8 years agolowmemorykiller: make default lowmemorykiller debug message useful
Colin Cross [Fri, 3 May 2013 21:57:29 +0000 (14:57 -0700)]
lowmemorykiller: make default lowmemorykiller debug message useful

lowmemorykiller debug messages are inscrutable and mostly useful
for debugging the lowmemorykiller, not explaining why a process
was killed.  Make the messages more useful by prefixing them
with "lowmemorykiller: " and explaining in more readable terms
what was killed, who it was killed for, and why it was killed.

The messages now look like:
[   76.997631] lowmemorykiller: Killing 'droid.gallery3d' (2172), adj 1000,
[   76.997635]    to free 27436kB on behalf of 'kswapd0' (29) because
[   76.997638]    cache 122624kB is below limit 122880kB for oom_score_adj 1000
[   76.997641]    Free memory is -53356kB above reserved

A negative number for free memory above reserved means some of the
reserved memory has been used and is being regenerated by kswapd,
which is likely what called the shrinkers.

Change-Id: I1fe983381e73e124b90aa5d91cb66e55eaca390f
Signed-off-by: Colin Cross <ccross@android.com>
8 years agostaging: android: lowmemorykiller: Add config option to support oom_adj values
Arve Hjønnevåg [Wed, 26 Sep 2012 00:37:14 +0000 (17:37 -0700)]
staging: android: lowmemorykiller: Add config option to support oom_adj values

The conversion to use oom_score_adj instead of the deprecated oom_adj
values breaks existing user-space code. Add a config option to convert
oom_adj values written to oom_score_adj values if they appear to be
valid oom_adj values.

Change-Id: I68308125059b802ee2991feefb07e9703bc48549
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoShrink ashmem directly through shmem_fallocate
Tobias Lindskog [Mon, 9 Feb 2015 07:10:39 +0000 (08:10 +0100)]
Shrink ashmem directly through shmem_fallocate

When ashmem_shrink is called from direct reclaim on a user thread, a
call to do_fallocate will check for permissions against the security
policy of that user thread.  It can thus fail by chance if called on a
thread that isn't permitted to modify the relevant ashmem areas.

Because we know that we have a shmem file underneath, call the shmem
implementation of fallocate directly instead of going through the
user-space interface for fallocate.

FIX=DMS06243560
Area: Kernel/Linux Kernel

Bug: 21951515
Change-Id: Ie98fff18a2bdeb535cd24d4fbdd13677e12681a7
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
8 years agostaging: android: ashmem: add missing include
Rom Lemarchand [Sat, 24 Jan 2015 23:08:42 +0000 (15:08 -0800)]
staging: android: ashmem: add missing include

Include <linux/types.h> into ashmem.h to ensure referenced types are defined

Signed-off-by: Rom Lemarchand <romlem@android.com>
Change-Id: Iac18ed86dd47296d02a269607b1514724aaa9958
(cherry picked from commit 0d7c7ba9f6428e694130a40e270516618f27ce14)

8 years agostaging: android: ashmem: Avoid deadlock with mmap/shrink
Laura Abbott [Fri, 24 Jan 2014 23:19:49 +0000 (15:19 -0800)]
staging: android: ashmem: Avoid deadlock with mmap/shrink

Both ashmem_mmap and ashmem_shrink take the ashmem_lock. It may
be possible for ashmem_mmap to invoke ashmem_shrink:

-000|mutex_lock(lock = 0x0)
-001|ashmem_shrink(?, sc = 0x0) <--- try to take ashmem_mutex again
-002|shrink_slab(shrink = 0xDA5F1CC0, nr_pages_scanned = 0, lru_pages
-002|=
-002|124)
-003|try_to_free_pages(zonelist = 0x0, ?, ?, ?)
-004|__alloc_pages_nodemask(gfp_mask = 21200, order = 1, zonelist =
-004|0xC11D0940,
-005|new_slab(s = 0xE4841E80, ?, node = -1)
-006|__slab_alloc.isra.43.constprop.50(s = 0xE4841E80, gfpflags =
-006|2148925462, ad
-007|kmem_cache_alloc(s = 0xE4841E80, gfpflags = 208)
-008|shmem_alloc_inode(?)
-009|alloc_inode(sb = 0xE480E800)
-010|new_inode_pseudo(?)
-011|new_inode(?)
-012|shmem_get_inode(sb = 0xE480E800, dir = 0x0, ?, dev = 0, flags =
-012|187)
-013|shmem_file_setup(?, ?, flags = 187)
-014|ashmem_mmap(?, vma = 0xC5D64210) <---- Acquire ashmem_mutex
-015|mmap_region(file = 0xDF8E2C00, addr = 1772974080, len = 233472,
-015|flags = 57,
-016|sys_mmap_pgoff(addr = 0, len = 230400, prot = 3, flags = 1, fd =
-016|157, pgoff
-017|ret_fast_syscall(asm)
-->|exception
-018|NUR:0x40097508(asm)
---|end of frame

Avoid this deadlock by using mutex_trylock in ashmem_shrink; if the mutex
is already held, do not attempt to shrink.

Change-Id: I222bbf55856d5849da813b730de0636c80966c8e
Reported-by: Matt Wagantall <mattw@codeaurora.org>
Reported-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Reported-by: Osvaldo Banuelos <osvaldob@codeaurora.org>
Reported-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
8 years agoashmem: Add shmem_set_file to mm/shmem.c
John Stultz [Fri, 16 Dec 2011 02:51:04 +0000 (18:51 -0800)]
ashmem: Add shmem_set_file to mm/shmem.c

NOT FOR STAGING
This patch re-adds the original shmem_set_file to mm/shmem.c
and converts ashmem.c back to using it.

CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
CC: Greg KH <greg@kroah.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
8 years agoPM / Sleep: Add wake lock api wrapper on top of wakeup sources
Arve Hjønnevåg [Sat, 17 Mar 2012 00:44:42 +0000 (17:44 -0700)]
PM / Sleep: Add wake lock api wrapper on top of wakeup sources

Change-Id: Icaad02fe1e8856fdc2e4215f380594a5dde8e002
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoandroid: Add android config documentation to boot framework.
Mike Chan [Thu, 22 Jan 2009 20:23:32 +0000 (12:23 -0800)]
android: Add android config documentation to boot framework.

Signed-off-by: Mike Chan <mike@android.com>
8 years agoLinux 4.4
Linus Torvalds [Sun, 10 Jan 2016 23:01:32 +0000 (15:01 -0800)]
Linux 4.4

8 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 9 Jan 2016 22:53:48 +0000 (14:53 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "A single fix for machines with pages > 4k (PPC mostly).

  There's a bug in our optimal transfer size code where we don't account
  for pages > 4k and can set the transfer size to be less than the page
  size causing nasty failures"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  sd: Reject optimal transfer length smaller than page size

8 years agoMerge tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Sat, 9 Jan 2016 22:44:44 +0000 (14:44 -0800)]
Merge tag 'pci-v4.4-fixes-4' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixlet from Bjorn Helgaas:
 "This marks the TI DRA7xx host bridge driver as broken.  Apparently it
  has never worked without some additional out-of-tree code, so I'm
  going to mark it broken now and remove it completely next cycle unless
  it's fixed"

* tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: dra7xx: Mark driver as broken

8 years agovmstat: allocate vmstat_wq before it is used
Michal Hocko [Fri, 8 Jan 2016 10:18:29 +0000 (11:18 +0100)]
vmstat: allocate vmstat_wq before it is used

kernel test robot has reported the following crash:

  BUG: unable to handle kernel NULL pointer dereference at 00000100
  IP: [<c1074df6>] __queue_work+0x26/0x390
  *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
  Oops: 0000 [#1] PREEMPT PREEMPT SMP SMP
  CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.4.0-rc4-00139-g373ccbe #1
  Workqueue: events vmstat_shepherd
  task: cb684600 ti: cb7ba000 task.ti: cb7ba000
  EIP: 0060:[<c1074df6>] EFLAGS: 00010046 CPU: 0
  EIP is at __queue_work+0x26/0x390
  EAX: 00000046 EBX: cbb37800 ECX: cbb37800 EDX: 00000000
  ESI: 00000000 EDI: 00000000 EBP: cb7bbe68 ESP: cb7bbe38
   DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  CR0: 8005003b CR2: 00000100 CR3: 01fd5000 CR4: 000006b0
  Stack:
  Call Trace:
    __queue_delayed_work+0xa1/0x160
    queue_delayed_work_on+0x36/0x60
    vmstat_shepherd+0xad/0xf0
    process_one_work+0x1aa/0x4c0
    worker_thread+0x41/0x440
    kthread+0xb0/0xd0
    ret_from_kernel_thread+0x21/0x40

The reason is that start_shepherd_timer schedules the shepherd work item
which uses vmstat_wq (vmstat_shepherd) before setup_vmstat allocates
that workqueue so if the further initialization takes more than HZ we
might end up scheduling on a NULL vmstat_wq.  This is really unlikely
but not impossible.

Fixes: 373ccbe59270 ("mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress")
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Tested-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 9 Jan 2016 00:11:05 +0000 (16:11 -0800)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is the final small set of ARM SoC bug fixes for linux-4.4, almost
  all regressions:

  OMAP:
   - data corruption on the Nokia N900 flash

  Allwinner:
   - Two defconfig change to get USB working again

  ARM Versatile:
   - Interrupt numbers gone bad after an older bug fix

  Nomadik:
   - Crashes from incorrect L2 cache settings

  VIA vt8500:
   - SD/MMC support on WM8650 never worked"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  dts: vt8500: Add SDHC node to DTS file for WM8650
  ARM: Fix broken USB support in multi_v7_defconfig for sunxi devices
  ARM: versatile: fix MMC/SD interrupt assignment
  ARM: nomadik: set latencies to 8 cycles
  ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption
  ARM: Fix broken USB support in sunxi_defconfig

8 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 8 Jan 2016 23:58:14 +0000 (15:58 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fix from Paolo Bonzini:
 "A simple fix.  I'm sending it before the merge window, because it
  refines a patch found in your master branch but not yet in the
  kvm/next branch that is destined for 4.5"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: x86: only channel 0 of the i8254 is linked to the HPET

8 years agoMerge tag 'pm+acpi-4.4-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 8 Jan 2016 23:50:59 +0000 (15:50 -0800)]
Merge tag 'pm+acpi-4.4-final' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Just one obvious fix that adds a missing function argument in ACPI
  code introduced recently (Kees Cook)"

* tag 'pm+acpi-4.4-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / property: avoid leaking format string into kobject name

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Jan 2016 23:21:48 +0000 (15:21 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "A handful of x86 fixes:

   - a syscall ABI fix, fixing an Android breakage
   - a Xen PV guest fix relating to the RTC device, causing a
     non-working console
   - a Xen guest syscall stack frame fix
   - an MCE hotplug CPU crash fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/numachip: Fix NumaConnect2 MMCFG PCI access
  x86/entry: Restore traditional SYSENTER calling convention
  x86/entry: Fix some comments
  x86/paravirt: Prevent rtc_cmos platform device init on PV guests
  x86/xen: Avoid fast syscall path for Xen PV guests
  x86/mce: Ensure offline CPUs don't participate in rendezvous process

8 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Jan 2016 21:57:13 +0000 (13:57 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc scheduler fixes"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Reset task's lockless wake-queues on fork()
  sched/core: Fix unserialized r-m-w scribbling stuff
  sched/core: Check tgid in is_global_init()
  sched/fair: Fix multiplication overflow on 32-bit systems

8 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Jan 2016 21:52:59 +0000 (13:52 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Two core subsystem fixes, plus a handful of tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix race in swevent hash
  perf: Fix race in perf_event_exec()
  perf list: Robustify event printing routine
  perf list: Add support for PERF_COUNT_SW_BPF_OUT
  perf hists browser: Fix segfault if use symbol filter in cmdline
  perf hists browser: Reset selection when refresh
  perf hists browser: Add NULL pointer check to prevent crash
  perf buildid-list: Fix return value of perf buildid-list -k
  perf buildid-list: Show running kernel build id fix

8 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Jan 2016 21:46:59 +0000 (13:46 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fix from Ingo Molnar:
 "Fixes a core IRQ subsystem deadlock"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Prevent chip buslock deadlock

8 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 8 Jan 2016 21:39:09 +0000 (13:39 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block revert from Jens Axboe:
 "The previous pull request had a split fix for NVMe, however there are
  corner cases where that ends up blowing up.

  So let's revert it for 4.4.  The regression isn't introduced in this
  cycle, and it's "just" a performance regression, not a
  stability/integrity issue"

* 'for-linus' of git://git.kernel.dk/linux-block:
  Revert "block: Split bios on chunk boundaries"

8 years agoMerge tag 'dmaengine-fix-4.4' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 8 Jan 2016 20:23:00 +0000 (12:23 -0800)]
Merge tag 'dmaengine-fix-4.4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "Late fixes for 4.4 are three fixes for drivers which include a revert
  of mic-x100 fix which is causing regression, xgene fix for double IRQ
  and async_tx fix to use GFP_NOWAIT"

* tag 'dmaengine-fix-4.4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag
  async_tx: use GFP_NOWAIT rather than GFP_IO
  dmaengine: Revert "dmaengine: mic_x100: add missing spin_unlock"

8 years agoMerge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Fri, 8 Jan 2016 20:18:45 +0000 (12:18 -0800)]
Merge branch 'dmi-for-linus' of git://git./linux/kernel/git/jdelvare/staging

Pull dmi fix from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6

8 years agoMerge tag 'sound-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 8 Jan 2016 19:52:18 +0000 (11:52 -0800)]
Merge tag 'sound-4.4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A slightly higher volume than a new year's wish, but not too
  worrisome: a large LOC is only for HD-audio device-specific quirks, so
  fairly safe to apply.  The rest ASoC fixes are all trivial and small;
  a simple replacement of mutex call with nested lock version, a few
  Arizona and Realtek codec fixes, and a regression fix for Skylake
  firmware handling"

* tag 'sound-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: Intel: Skylake: Fix the memory leak
  ASoC: Intel: Skylake: Revert previous broken fix memory leak fix
  ASoC: Use nested lock for snd_soc_dapm_mutex_lock
  ASoC: rt5645: add sys clk detection
  ALSA: hda - Add keycode map for alc input device
  ALSA: hda - Add mic mute hotkey quirk for Lenovo ThinkCentre AIO
  ASoC: arizona: Fix bclk for sample rates that are multiple of 4kHz

8 years agoMerge tag 'omap-for-v4.4/onenand-corruption' of git://git.kernel.org/pub/scm/linux...
Arnd Bergmann [Fri, 8 Jan 2016 16:46:45 +0000 (17:46 +0100)]
Merge tag 'omap-for-v4.4/onenand-corruption' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

Pull "urgent onenand file system corruption fix for n900" from Tony Lindgren:

Last minute urgent pull request to prevent file system corruption
on Nokia N900.

Looks like we have a GPMC bus timing bug that has gone unnoticed
because of bootloader configured registers until few days ago. We
are not detecting the onenand clock rate properly unless we have
CONFIG_OMAP_GPMC_DEBUG set and this causes onenand corruption
that can be easily be reproduced.

There seems to be also an additional bug still lurking around for
onenand corruption. But that is still being investigated and
it does not seem to be GPMC timings related.

Meanwhile, it would be good to get this fix into v4.4 to prevent
wrong timings from corrupting onenand.

* tag 'omap-for-v4.4/onenand-corruption' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption

8 years agoRevert "block: Split bios on chunk boundaries"
Jens Axboe [Fri, 8 Jan 2016 16:00:29 +0000 (09:00 -0700)]
Revert "block: Split bios on chunk boundaries"

This reverts commit d3805611130af9b911e908af9f67a3f64f4f0914.

If we end up splitting on the first segment, we don't adjust
the sector count. That results in hitting a BUG() with attempting
to split 0 sectors.

As this is just a performance issue and not a regression since
4.3 release, let's just rever this change. That gives us more
time to test a real fix for 4.5, which would be marked for
stable anyway.

8 years agoPCI: dra7xx: Mark driver as broken
Richard Cochran [Fri, 8 Jan 2016 15:58:31 +0000 (09:58 -0600)]
PCI: dra7xx: Mark driver as broken

Mark the dra7xx PCI host driver as broken.  This driver was first merged in
v3.17 and has never worked.  Although the driver compiles just fine, it is
missing an essential device reset.  If the driver is included, the kernel
locks up hard shortly after booting, before any console output appears.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
8 years agofirmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6
Andrea Arcangeli [Fri, 8 Jan 2016 08:00:54 +0000 (09:00 +0100)]
firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6

The dmi_ver wasn't updated correctly before the dmi_decode method run
to save the uuid.

That resulted in "dmidecode -s system-uuid" and
/sys/class/dmi/id/product_uuid disagreeing. The latter was buggy and
this fixes it.

Reported-by: Federico Simoncelli <fsimonce@redhat.com>
Fixes: 9f9c9cbb6057 ("drivers/firmware/dmi_scan.c: fetch dmi version from SMBIOS if it exists")
Fixes: 79bae42d51a5 ("dmi_scan: refactor dmi_scan_machine(), {smbios,dmi}_present()")
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
8 years agoACPI / property: avoid leaking format string into kobject name
Kees Cook [Thu, 7 Jan 2016 19:24:29 +0000 (11:24 -0800)]
ACPI / property: avoid leaking format string into kobject name

The dn->name is expected to be used as a literal, so add the missing
"%s".

Fixes: 263b4c1a64bc (ACPI / property: Expose data-only subnodes via sysfs)
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Thu, 7 Jan 2016 21:06:35 +0000 (13:06 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm nouveau fix from Dave Airlie:
 "Still not back to work, but I decided to forward this fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/nouveau/gr/nv40: fix oops in interrupt handler

8 years agoMerge tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 7 Jan 2016 20:56:23 +0000 (12:56 -0800)]
Merge tag 'iommu-fixes-v4.4-rc8' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:

 - Two build issues, one in the ipmmu-vmsa driver and one for the new
   generic dma-api implemention used on arm64

 - A performance fix for said dma-api implemention

 - An issue caused by a wrong offset in map_sg in the same code as above

* tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/dma: Use correct offset in map_sg
  iommu/ipmmu-vmsa: Don't truncate ttbr if LPAE is not enabled
  iommu/dma: Avoid unlikely high-order allocations
  iommu/dma: Add some missing #includes

8 years agoMerge tag 'trace-v4.4-rc4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Thu, 7 Jan 2016 20:42:22 +0000 (12:42 -0800)]
Merge tag 'trace-v4.4-rc4-4' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fix from Steven Rostedt:
 "PeiyangX Qiu reported that if a module fails to load between calling
  ftrace_module_init() and do_init_module() that the allocations made in
  ftrace_module_init() will not be freed, resulting in a memory leak.

  The solution is to call ftrace_release_mod() on the failing module in
  the fail path befor do_init_module() is called.  This will remove any
  allocations made for that module, and nothing if ftrace_module_init()
  wasn't called yet for that module.

  Note, once do_init_module() is called, the MODULE_GOING notifiers are
  called for the failed module, which calls into the ftrace code to do
  the proper clean up (basically calling ftrace_release_mod())"

* tag 'trace-v4.4-rc4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace/module: Call clean up function when module init fails early

8 years agoftrace/module: Call clean up function when module init fails early
Steven Rostedt (Red Hat) [Wed, 6 Jan 2016 01:32:47 +0000 (20:32 -0500)]
ftrace/module: Call clean up function when module init fails early

If the module init code fails after calling ftrace_module_init() and before
calling do_init_module(), we can suffer from a memory leak. This is because
ftrace_module_init() allocates pages to store the locations that ftrace
hooks are placed in the module text. If do_init_module() fails, it still
calls the MODULE_GOING notifiers which will tell ftrace to do a clean up of
the pages it allocated for the module. But if load_module() fails before
then, the pages allocated by ftrace_module_init() will never be freed.

Call ftrace_release_mod() on the module if load_module() fails before
getting to do_init_module().

Link: http://lkml.kernel.org/r/567CEA31.1070507@intel.com
Reported-by: "Qiu, PeiyangX" <peiyangx.qiu@intel.com>
Fixes: a949ae560a511 "ftrace/module: Hardcode ftrace_module_init() call into load_module()"
Cc: stable@vger.kernel.org # v2.6.38+
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
8 years agodts: vt8500: Add SDHC node to DTS file for WM8650
Roman Volkov [Fri, 1 Jan 2016 13:38:11 +0000 (16:38 +0300)]
dts: vt8500: Add SDHC node to DTS file for WM8650

Since WM8650 has the same 'WMT' SDHC controller as WM8505, and the driver
is already in the kernel, this node enables the controller support for
WM8650

Signed-off-by: Roman Volkov <rvolkov@v1ros.org>
Reviewed-by: Alexey Charkov <alchark@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
8 years agoARM: Fix broken USB support in multi_v7_defconfig for sunxi devices
Timo Sigurdsson [Fri, 1 Jan 2016 13:38:22 +0000 (14:38 +0100)]
ARM: Fix broken USB support in multi_v7_defconfig for sunxi devices

Commit 69fb4dcada77 ("power: Add an axp20x-usb-power driver") introduced a
new driver for the USB power supply used on various Allwinner based SBCs.
However, the driver was not added to multi_v7_defconfig which breaks USB
support for some boards (e.g. LeMaker BananaPi) as the kernel will now
turn off the USB power supply during boot by default if the driver isn't
present. (This was not the case in linux 4.3 or lower where the USB power
was always left on.)

Hence, add the driver to multi_v7_defconfig in order to keep USB support
working on those boards that require it.

Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
Tested-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
8 years agokvm: x86: only channel 0 of the i8254 is linked to the HPET
Paolo Bonzini [Thu, 7 Jan 2016 12:50:38 +0000 (13:50 +0100)]
kvm: x86: only channel 0 of the i8254 is linked to the HPET

While setting the KVM PIT counters in 'kvm_pit_load_count', if
'hpet_legacy_start' is set, the function disables the timer on
channel[0], instead of the respective index 'channel'. This is
because channels 1-3 are not linked to the HPET.  Fix the caller
to only activate the special HPET processing for channel 0.

Reported-by: P J P <pjp@fedoraproject.org>
Fixes: 0185604c2d82c560dab2f2933a18f797e74ab5a8
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoiommu/dma: Use correct offset in map_sg
Robin Murphy [Mon, 4 Jan 2016 16:19:42 +0000 (16:19 +0000)]
iommu/dma: Use correct offset in map_sg

When mapping a non-page-aligned scatterlist entry, we copy the original
offset to the output DMA address before aligning it to hand off to
iommu_map_sg(), then later adding the IOVA page address portion to get
the final mapped address. However, when the IOVA page size is smaller
than the CPU page size, it is the offset within the IOVA page we want,
not that within the CPU page, which can easily be larger than an IOVA
page and thus result in an incorrect final address.

Fix the bug by taking only the IOVA-aligned part of the offset as the
basis of the DMA address, not the whole thing.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
8 years agoMerge branch 'linux-4.4' of git://github.com/skeggsb/linux into drm-fixes
Dave Airlie [Thu, 7 Jan 2016 07:18:45 +0000 (17:18 +1000)]
Merge branch 'linux-4.4' of git://github.com/skeggsb/linux into drm-fixes

single nv40 oops fix.

* 'linux-4.4' of git://github.com/skeggsb/linux:
  drm/nouveau/gr/nv40: fix oops in interrupt handler

8 years agodmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag
Rameshwar Prasad Sahu [Wed, 23 Dec 2015 12:58:15 +0000 (18:28 +0530)]
dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag

For interrupt controller that doesn't support irq_disable and hardware
with level interrupt, an extra interrupt can be pending. This patch fixes
the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line.

Reference: http://git.kernel.org/tip/e9849777d0e27cdd2902805be51da73e7c79578c

Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
8 years agoasync_tx: use GFP_NOWAIT rather than GFP_IO
NeilBrown [Thu, 7 Jan 2016 00:02:34 +0000 (11:02 +1100)]
async_tx: use GFP_NOWAIT rather than GFP_IO

These async_XX functions are called from md/raid5 in an atomic
section, between get_cpu() and put_cpu(), so they must not sleep.
So use GFP_NOWAIT rather than GFP_IO.

Dan Williams writes: Longer term async_tx needs to be merged into md
directly as we can allocate this unmap data statically per-stripe
rather than per request.

Fixed: 7476bd79fc01 ("async_pq: convert to dmaengine_unmap_data")
Cc: stable@vger.kernel.org (v3.13+)
Reported-and-tested-by: Stanislav Samsonov <slava@annapurnalabs.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
8 years agoARM: versatile: fix MMC/SD interrupt assignment
Linus Walleij [Tue, 5 Jan 2016 08:59:30 +0000 (09:59 +0100)]
ARM: versatile: fix MMC/SD interrupt assignment

Commit 0976c946a610d06e907335b7a3afa6db046f8e1b
"arm/versatile: Fix versatile irq specifications"
has an off-by-one error on the Versatile AB that has
been regressing the Versatile AB hardware for some time.

However it seems like the interrupt assignments have
never been correct and I have now adjusted them according
to the specification. The masks for the valid interrupts
made it impossible to assign the right SIC interrupt
for the MMCI, so I went in and fixed these to correspond
to the specifications, and added references if anyone
wants to double-check.

Due to the Versatile PB including the Versatile AB
as a base DTS file, we need to override and correct
some values to correspond to the actual changes in the
hardware.

For the Versatile PB I don't think the IRQ line
assignment for MMCI has ever been correct for either of
the two MMCI blocks. It would be nice if someone with the
physical PB board could test this.

Patch tested on the Versatile AB, QEMU for Versatile AB
and QEMU for Versatile PB.

Cc: Rob Herring <robh@kernel.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: stable@vger.kernel.org
Fixes: 0976c946a610 ("arm/versatile: Fix versatile irq specifications")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agoARM: nomadik: set latencies to 8 cycles
Linus Walleij [Mon, 4 Jan 2016 01:18:28 +0000 (02:18 +0100)]
ARM: nomadik: set latencies to 8 cycles

The Nomadik has sporadic crashes because of these latencies, setting
them to max makes the platform work nicely, so use this values for
now.

These latencies were set to 2 since the Nomadik platform was merged,
but I suspect they never took effect until the right size and
associativity for the cache was specified in the device tree and
that is why the crash comes now.

Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agoMerge tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd
Linus Torvalds [Thu, 7 Jan 2016 04:32:08 +0000 (20:32 -0800)]
Merge tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 "Three last MTD fixes for v4.4.  These are all fixes for regressions
  and bugs reported mid cycle.  Unfortunately, some of them took a bit
  long to get proper testing and feedback.

   - Assign the default MTD name earlier in the registration process, so
     partition parsers (like cmdlinepart) see the right name.  Without
     this, some systems may come up with unpartitioned flash.  This was
     a v4.4-rc1 regression.

   - Revert some new Winbond SPI NOR flash unlocking/locking support;
     new code in v4.4 caused regressions on some Spansion flash.

   - Fix mis-typed parameter ordering in SPI NOR unlock function; this
     bug was introduced in v4.4-rc1"

* tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd:
  mtd: spi-nor: fix stm_is_locked_sr() parameters
  mtd: spi-nor: fix Spansion regressions (aliased with Winbond)
  mtd: fix cmdlinepart parser, early naming for auto-filled MTD

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 7 Jan 2016 00:15:03 +0000 (16:15 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "As usual, there are a couple straggler bug fixes:

   1) qlcnic_alloc_mbx_args() error returns are not checked in qlcnic
      driver.  Fix from Insu Yun.

   2) SKB refcounting bug in connector, from Florian Westphal.

   3) vrf_get_saddr() has to propagate fib_lookup() errors to it's
      callers, from David Ahern.

   4) Fix AF_UNIX splice/bind deadlock, from Rainer Weikusat.

   5) qdisc_rcu_free() fails to free the per-cpu qstats.  Fix from John
      Fastabend.

   6) vmxnet3 driver passes wrong page to dma_map_page(), fix from
     Shrikrishna Khare.

   7) Don't allow zero cwnd in tcp_cwnd_reduction(), from Yuchung Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  tcp: fix zero cwnd in tcp_cwnd_reduction
  Driver: Vmxnet3: Fix regression caused by 5738a09
  net: qmi_wwan: Add WeTelecom-WPD600N
  mkiss: fix scribble on freed memory
  net: possible use after free in dst_release
  net: sched: fix missing free per cpu on qstats
  ARM: net: bpf: fix zero right shift
  6pack: fix free memory scribbles
  net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
  bridge: Only call /sbin/bridge-stp for the initial network namespace
  af_unix: Fix splice-bind deadlock
  net: Propagate lookup failure in l3mdev_get_saddr to caller
  r8152: add reset_resume function
  connector: bump skb->users before callback invocation
  cxgb4: correctly handling failed allocation
  qlcnic: correctly handle qlcnic_alloc_mbx_args

8 years agotcp: fix zero cwnd in tcp_cwnd_reduction
Yuchung Cheng [Wed, 6 Jan 2016 20:42:38 +0000 (12:42 -0800)]
tcp: fix zero cwnd in tcp_cwnd_reduction

Patch 3759824da87b ("tcp: PRR uses CRB mode by default and SS mode
conditionally") introduced a bug that cwnd may become 0 when both
inflight and sndcnt are 0 (cwnd = inflight + sndcnt). This may lead
to a div-by-zero if the connection starts another cwnd reduction
phase by setting tp->prior_cwnd to the current cwnd (0) in
tcp_init_cwnd_reduction().

To prevent this we skip PRR operation when nothing is acked or
sacked. Then cwnd must be positive in all cases as long as ssthresh
is positive:

1) The proportional reduction mode
   inflight > ssthresh > 0

2) The reduction bound mode
  a) inflight == ssthresh > 0

  b) inflight < ssthresh
     sndcnt > 0 since newly_acked_sacked > 0 and inflight < ssthresh

Therefore in all cases inflight and sndcnt can not both be 0.
We check invalid tp->prior_cwnd to avoid potential div0 bugs.

In reality this bug is triggered only with a sequence of less common
events.  For example, the connection is terminating an ECN-triggered
cwnd reduction with an inflight 0, then it receives reordered/old
ACKs or DSACKs from prior transmission (which acks nothing). Or the
connection is in fast recovery stage that marks everything lost,
but fails to retransmit due to local issues, then receives data
packets from other end which acks nothing.

Fixes: 3759824da87b ("tcp: PRR uses CRB mode by default and SS mode conditionally")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoDriver: Vmxnet3: Fix regression caused by 5738a09
Shrikrishna Khare [Wed, 6 Jan 2016 18:44:27 +0000 (10:44 -0800)]
Driver: Vmxnet3: Fix regression caused by 5738a09

Reported-by: Bingkuo Liu <bingkuol@vmware.com>
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: qmi_wwan: Add WeTelecom-WPD600N
Kristian Evensen [Wed, 6 Jan 2016 13:15:50 +0000 (14:15 +0100)]
net: qmi_wwan: Add WeTelecom-WPD600N

The WeTelecom-WPD600N is an LTE module that, in addition to supporting most
"normal" bands, also supports LTE over 450MHz. Manual testing showed that
only interface number three replies to QMI messages.

Cc: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomkiss: fix scribble on freed memory
Alan [Wed, 6 Jan 2016 14:55:02 +0000 (14:55 +0000)]
mkiss: fix scribble on freed memory

commit d79f16c046086f4fe0d42184a458e187464eb83e fixed a user triggerable
scribble on free memory but added a new one which allows the user to
scribble even more and user controlled data into freed space.

As with 6pack we need to halt the queue before we free the buffers, because
the transmit logic is not protected by the semaphore.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: possible use after free in dst_release
Francesco Ruggeri [Wed, 6 Jan 2016 08:18:48 +0000 (00:18 -0800)]
net: possible use after free in dst_release

dst_release should not access dst->flags after decrementing
__refcnt to 0. The dst_entry may be in dst_busy_list and
dst_gc_task may dst_destroy it before dst_release gets a chance
to access dst->flags.

Fixes: d69bbf88c8d0 ("net: fix a race in dst_release()")
Fixes: 27b75c95f10d ("net: avoid RCU for NOCACHE dst")
Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'asoc-fix-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brooni...
Takashi Iwai [Wed, 6 Jan 2016 19:53:28 +0000 (20:53 +0100)]
Merge tag 'asoc-fix-v4.4-rc8' of git://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Last minute fixes for v4.4

A few final fixes for v4.4, the main one being the two patches to the
new Sky Lake drivers which fix a previous incorrect fix that went in
during an earlier -rc.

8 years agoARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption
Tony Lindgren [Tue, 5 Jan 2016 20:04:20 +0000 (12:04 -0800)]
ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption

Commit 63aa945b1013 ("memory: omap-gpmc: Add Kconfig option for debug")
unified the GPMC debug for the SoCs with GPMC. The commit also left out
the option for HWMOD_INIT_NO_RESET as we now require proper timings for
GPMC to be able to remap GPMC devices out of address 0.

Unfortunately on Nokia N900, onenand now only partially works with the
device tree provided timings. It works enough to get detected but the
clock rate supported by the onenand chip gets misdetected. This in turn
causes the GPMC timings to be miscalculated and this leads into file
system corruption on N900.

Looks like onenand needs CS_CONFIG1 bit 27 WRITETYPE set for for sync
write. This is needed also for async timings when we write to onenand
with omap2_onenand_set_async_mode(). Without sync write bit set, the
async read for the onenand ONENAND_REG_VERSION_ID will return 0xfff.

Let's exit with an error if onenand rate is not detected. And let's
remove the extra call to omap2_onenand_set_async_mode() as we only need
to do this once at the end of omap2_onenand_setup_async().

Fixes: 63aa945b1013 ("memory: omap-gpmc: Add Kconfig option for debug")
Cc: stable@vger.kernel.org # v4.2+
Reported-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Tested-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>
8 years agosched/core: Reset task's lockless wake-queues on fork()
Sebastian Andrzej Siewior [Mon, 21 Dec 2015 17:17:10 +0000 (18:17 +0100)]
sched/core: Reset task's lockless wake-queues on fork()

In the following commit:

  7675104990ed ("sched: Implement lockless wake-queues")

we gained lockless wake-queues.

The -RT kernel managed to lockup itself with those. There could be multiple
attempts for task X to enqueue it for a wakeup _even_ if task X is already
running.

The reason is that task X could be runnable but not yet on CPU. The the
task performing the wakeup did not leave the CPU it could performe
multiple wakeups.

With the proper timming task X could be running and enqueued for a
wakeup. If this happens while X is performing a fork() then its its
child will have a !NULL `wake_q` member copied.

This is not a problem as long as the child task does not participate in
lockless wakeups :)

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 7675104990ed ("sched: Implement lockless wake-queues")
Link: http://lkml.kernel.org/r/20151221171710.GA5499@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agosched/core: Fix unserialized r-m-w scribbling stuff
Peter Zijlstra [Wed, 25 Nov 2015 15:02:07 +0000 (16:02 +0100)]
sched/core: Fix unserialized r-m-w scribbling stuff

Some of the sched bitfieds (notably sched_reset_on_fork) can be set
on other than current, this can cause the r-m-w to race with other
updates.

Since all the sched bits are serialized by scheduler locks, pull them
in a separate word.

Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akpm@linux-foundation.org
Cc: hannes@cmpxchg.org
Cc: mhocko@kernel.org
Cc: vdavydov@parallels.com
Link: http://lkml.kernel.org/r/20151125150207.GM11639@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agosched/core: Check tgid in is_global_init()
Sergey Senozhatsky [Fri, 1 Jan 2016 14:03:01 +0000 (23:03 +0900)]
sched/core: Check tgid in is_global_init()

Our global init task can have sub-threads, so ->pid check is not reliable
enough for is_global_init(), we need to check tgid instead. This has been
spotted by Oleg and a fix was proposed by Richard a long time ago (see the
link below).

Oleg wrote:

  : Because is_global_init() is only true for the main thread of /sbin/init.
  :
  : Just look at oom_unkillable_task(). It tries to not kill init. But, say,
  : select_bad_process() can happily find a sub-thread of is_global_init()
  : and still kill it.

I recently hit the problem in question; re-sending the patch (to the
best of my knowledge it has never been submitted) with updated function
comment. Credit goes to Oleg and Richard.

Suggested-by: Richard Guy Briggs <rgb@redhat.com>
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric W . Biederman <ebiederm@xmission.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Serge E . Hallyn <serge.hallyn@ubuntu.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://www.redhat.com/archives/linux-audit/2013-December/msg00086.html
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agosched/fair: Fix multiplication overflow on 32-bit systems
Andrey Ryabinin [Mon, 14 Dec 2015 12:47:23 +0000 (15:47 +0300)]
sched/fair: Fix multiplication overflow on 32-bit systems

Make 'r' 64-bit type to avoid overflow in 'r * LOAD_AVG_MAX'
on 32-bit systems:

UBSAN: Undefined behaviour in kernel/sched/fair.c:2785:18
signed integer overflow:
87950 * 47742 cannot be represented in type 'int'

The most likely effect of this bug are bad load average numbers
resulting in weird scheduling. It's also likely that this can
persist for a longer time - until the system goes idle for
a long time so that all load avg numbers get reset.

[ This is the CFS load average metric, not the procfs output, which
  is separate. ]

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 9d89c257dfb9 ("sched/fair: Rewrite runnable load and utilization average tracking")
Link: http://lkml.kernel.org/r/1450097243-30137-1-git-send-email-aryabinin@virtuozzo.com
[ Improved the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Fix race in swevent hash
Peter Zijlstra [Tue, 15 Dec 2015 12:49:05 +0000 (13:49 +0100)]
perf: Fix race in swevent hash

There's a race on CPU unplug where we free the swevent hash array
while it can still have events on. This will result in a
use-after-free which is BAD.

Simply do not free the hash array on unplug. This leaves the thing
around and no use-after-free takes place.

When the last swevent dies, we do a for_each_possible_cpu() iteration
anyway to clean these up, at which time we'll free it, so no leakage
will occur.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf: Fix race in perf_event_exec()
Peter Zijlstra [Thu, 10 Dec 2015 19:57:40 +0000 (20:57 +0100)]
perf: Fix race in perf_event_exec()

I managed to tickle this warning:

  [ 2338.884942] ------------[ cut here ]------------
  [ 2338.890112] WARNING: CPU: 13 PID: 35162 at ../kernel/events/core.c:2702 task_ctx_sched_out+0x6b/0x80()
  [ 2338.900504] Modules linked in:
  [ 2338.903933] CPU: 13 PID: 35162 Comm: bash Not tainted 4.4.0-rc4-dirty #244
  [ 2338.911610] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
  [ 2338.923071]  ffffffff81f1468e ffff8807c6457cb8 ffffffff815c680c 0000000000000000
  [ 2338.931382]  ffff8807c6457cf0 ffffffff810c8a56 ffffe8ffff8c1bd0 ffff8808132ed400
  [ 2338.939678]  0000000000000286 ffff880813170380 ffff8808132ed400 ffff8807c6457d00
  [ 2338.947987] Call Trace:
  [ 2338.950726]  [<ffffffff815c680c>] dump_stack+0x4e/0x82
  [ 2338.956474]  [<ffffffff810c8a56>] warn_slowpath_common+0x86/0xc0
  [ 2338.963195]  [<ffffffff810c8b4a>] warn_slowpath_null+0x1a/0x20
  [ 2338.969720]  [<ffffffff811a49cb>] task_ctx_sched_out+0x6b/0x80
  [ 2338.976244]  [<ffffffff811a62d2>] perf_event_exec+0xe2/0x180
  [ 2338.982575]  [<ffffffff8121fb6f>] setup_new_exec+0x6f/0x1b0
  [ 2338.988810]  [<ffffffff8126de83>] load_elf_binary+0x393/0x1660
  [ 2338.995339]  [<ffffffff811dc772>] ? get_user_pages+0x52/0x60
  [ 2339.001669]  [<ffffffff8121e297>] search_binary_handler+0x97/0x200
  [ 2339.008581]  [<ffffffff8121f8b3>] do_execveat_common.isra.33+0x543/0x6e0
  [ 2339.016072]  [<ffffffff8121fcea>] SyS_execve+0x3a/0x50
  [ 2339.021819]  [<ffffffff819fc165>] stub_execve+0x5/0x5
  [ 2339.027469]  [<ffffffff819fbeb2>] ? entry_SYSCALL_64_fastpath+0x12/0x71
  [ 2339.034860] ---[ end trace ee1337c59a0ddeac ]---

Which is a WARN_ON_ONCE() indicating that cpuctx->task_ctx is not
what we expected it to be.

This is because context switches can swap the task_struct::perf_event_ctxp[]
pointer around. Therefore you have to either disable preemption when looking
at current, or hold ctx->lock.

Fix perf_event_enable_on_exec(), it loads current->perf_event_ctxp[]
before disabling interrupts, therefore a preemption in the right place
can swap contexts around and we're using the wrong one.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: syzkaller <syzkaller@googlegroups.com>
Link: http://lkml.kernel.org/r/20151210195740.GG6357@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agodmaengine: Revert "dmaengine: mic_x100: add missing spin_unlock"
Ashutosh Dixit [Wed, 23 Dec 2015 03:35:23 +0000 (19:35 -0800)]
dmaengine: Revert "dmaengine: mic_x100: add missing spin_unlock"

This reverts commit e958e079e254 ("dmaengine: mic_x100: add missing
spin_unlock").

The above patch is incorrect. There is nothing wrong with the original
code. The spin_lock is acquired in the "prep" functions and released
in "submit".

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
8 years agonet: sched: fix missing free per cpu on qstats
John Fastabend [Tue, 5 Jan 2016 17:11:36 +0000 (09:11 -0800)]
net: sched: fix missing free per cpu on qstats

When a qdisc is using per cpu stats (currently just the ingress
qdisc) only the bstats are being freed. This also free's the qstats.

Fixes: b0ab6f92752b9f9d8 ("net: sched: enable per cpu qstats")
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoARM: net: bpf: fix zero right shift
Rabin Vincent [Tue, 5 Jan 2016 17:34:04 +0000 (18:34 +0100)]
ARM: net: bpf: fix zero right shift

The LSR instruction cannot be used to perform a zero right shift since a
0 as the immediate value (imm5) in the LSR instruction encoding means
that a shift of 32 is perfomed.  See DecodeIMMShift() in the ARM ARM.

Make the JIT skip generation of the LSR if a zero-shift is requested.

This was found using american fuzzy lop.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years ago6pack: fix free memory scribbles
One Thousand Gnomes [Tue, 5 Jan 2016 11:51:25 +0000 (11:51 +0000)]
6pack: fix free memory scribbles

commit acf673a3187edf72068ee2f92f4dc47d66baed47 fixed a user triggerable free
memory scribble but in doing so replaced it with a different one that allows
the user to control the data and scribble even more.

sixpack_close is called by the tty layer in tty context. The tty context is
protected by sp_get() and sp_put(). However network layer activity via
sp_xmit() is not protected this way. We must therefore stop the queue
otherwise the user gets to dump a buffer mostly of their choice into freed
kernel pages.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: filter: make JITs zero A for SKF_AD_ALU_XOR_X
Rabin Vincent [Tue, 5 Jan 2016 15:23:07 +0000 (16:23 +0100)]
net: filter: make JITs zero A for SKF_AD_ALU_XOR_X

The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data
instructions since it XORs A with X while all the others replace A with
some loaded value.  All the BPF JITs fail to clear A if this is used as
the first instruction in a filter.  This was found using american fuzzy
lop.

Add a helper to determine if A needs to be cleared given the first
instruction in a filter, and use this in the JITs.  Except for ARM, the
rest have only been compile-tested.

Fixes: 3480593131e0 ("net: filter: get rid of BPF_S_* enum")
Signed-off-by: Rabin Vincent <rabin@rab.in>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomtd: spi-nor: fix stm_is_locked_sr() parameters
Brian Norris [Tue, 15 Dec 2015 18:48:21 +0000 (10:48 -0800)]
mtd: spi-nor: fix stm_is_locked_sr() parameters

stm_is_locked_sr() takes the status register (SR) value as the last
parameter, not the second.

Reported-by: Bayi Cheng <bayi.cheng@mediatek.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Bayi Cheng <bayi.cheng@mediatek.com>
8 years agomtd: spi-nor: fix Spansion regressions (aliased with Winbond)
Brian Norris [Tue, 15 Dec 2015 18:48:20 +0000 (10:48 -0800)]
mtd: spi-nor: fix Spansion regressions (aliased with Winbond)

Spansion and Winbond have occasionally used the same manufacturer ID,
and they don't support the same features. Particularly, writing SR=0
seems to break read access for Spansion's s25fl064k. Unfortunately, we
don't currently have a way to differentiate these Spansion and Winbond
parts, so rather than regressing support for these Spansion flash, let's
drop the new Winbond lock/unlock support for now. We can try to address
Winbond support during the next release cycle.

Original discussion:

http://patchwork.ozlabs.org/patch/549173/
http://patchwork.ozlabs.org/patch/553683/

Fixes: 357ca38d4751 ("mtd: spi-nor: support lock/unlock/is_locked for Winbond")
Fixes: c6fc2171b249 ("mtd: spi-nor: disable protection for Winbond flash at startup")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reported-by: Felix Fietkau <nbd@openwrt.org>
Cc: Felix Fietkau <nbd@openwrt.org>
8 years agoMerge remote-tracking branch 'asoc/fix/intel' into asoc-linus
Mark Brown [Tue, 5 Jan 2016 23:07:33 +0000 (23:07 +0000)]
Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus

8 years agoMerge remote-tracking branch 'asoc/fix/rt5645' into asoc-linus
Mark Brown [Tue, 5 Jan 2016 23:07:33 +0000 (23:07 +0000)]
Merge remote-tracking branch 'asoc/fix/rt5645' into asoc-linus

8 years agoMerge remote-tracking branch 'asoc/fix/dapm' into asoc-linus
Mark Brown [Tue, 5 Jan 2016 23:07:32 +0000 (23:07 +0000)]
Merge remote-tracking branch 'asoc/fix/dapm' into asoc-linus

8 years agoMerge remote-tracking branch 'asoc/fix/arizona' into asoc-linus
Mark Brown [Tue, 5 Jan 2016 23:07:32 +0000 (23:07 +0000)]
Merge remote-tracking branch 'asoc/fix/arizona' into asoc-linus

8 years agobridge: Only call /sbin/bridge-stp for the initial network namespace
Hannes Frederic Sowa [Tue, 5 Jan 2016 09:46:00 +0000 (10:46 +0100)]
bridge: Only call /sbin/bridge-stp for the initial network namespace

[I stole this patch from Eric Biederman. He wrote:]

> There is no defined mechanism to pass network namespace information
> into /sbin/bridge-stp therefore don't even try to invoke it except
> for bridge devices in the initial network namespace.
>
> It is possible for unprivileged users to cause /sbin/bridge-stp to be
> invoked for any network device name which if /sbin/bridge-stp does not
> guard against unreasonable arguments or being invoked twice on the
> same network device could cause problems.

[Hannes: changed patch using netns_eq]

Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'trace-v4.4-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Tue, 5 Jan 2016 21:32:39 +0000 (13:32 -0800)]
Merge tag 'trace-v4.4-rc4-3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two more fixes:

  1. The recordmcount change had an output that used sprintf()
     (incorrectly) when it should have been a fprintf() to stderr.

  2. The printk_formats file could crash if someone added a
     trace_printk() in the core kernel, and also added one in a module.
     This does not affect production kernels.  Only kernels where
     developers add trace_printk() for debugging can crash"

* tag 'trace-v4.4-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix setting of start_index in find_next()
  ftrace/scripts: Fix incorrect use of sprintf in recordmcount

8 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Tue, 5 Jan 2016 21:21:19 +0000 (13:21 -0800)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile

Pull tile bugfix from Chris Metcalf:
 "This fixes a bug that Sudip's buildbot found for tilepro allmodconfig.

  I've tagged it for stable only back to 3.19, which was when most of
  the other affected architectures added their support for working
  around this issue"

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro

8 years agotile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro
Chris Metcalf [Tue, 22 Dec 2015 17:28:51 +0000 (12:28 -0500)]
tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro

This allows the build system to know that it can't attempt to
configure the Lustre virtual block device, for example, when tilepro
is using 64KB pages (as it does by default).  The tilegx build
already provided those symbols.

Previously we required that the tilepro hypervisor be rebuilt with
a different hardcoded page size in its headers, and then Linux be
rebuilt using the updated hypervisor header.  Now we allow each of
the hypervisor and Linux to be built independently.  We still check
at boot time to ensure that the page size provided by the hypervisor
matches what Linux expects.

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: stable@vger.kernel.org [3.19+]
8 years agoASoC: Intel: Skylake: Fix the memory leak
Vinod Koul [Tue, 5 Jan 2016 11:46:04 +0000 (17:16 +0530)]
ASoC: Intel: Skylake: Fix the memory leak

This provide the fix for firmware memory by freeing the pointer in driver
remove where it is safe to do so

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
8 years agoASoC: Intel: Skylake: Revert previous broken fix memory leak fix
Vinod Koul [Tue, 5 Jan 2016 11:46:03 +0000 (17:16 +0530)]
ASoC: Intel: Skylake: Revert previous broken fix memory leak fix

This reverts commit 87b5ed8ecb9fe05a696e1c0b53c7a49ea66432c1 ("ASoC: Intel:
Skylake: fix memory leak") as it causes regression on Skylake devices

The SKL drivers can be deferred probe. The topology file based widgets can
have references to topology file so this can't be freed until card is fully
created, so revert this patch for now

[   66.682767] BUG: unable to handle kernel paging request at ffffc900001363fc
[   66.690735] IP: [<ffffffff806c94dd>] strnlen+0xd/0x40
[   66.696509] PGD 16e035067 PUD 16e036067 PMD 16e038067 PTE 0
[   66.702925] Oops: 0000 [#1] PREEMPT SMP
[   66.768390] CPU: 3 PID: 57 Comm: kworker/u16:3 Tainted: G O 4.4.0-rc7-skl #62
[   66.778869] Hardware name: Intel Corporation Skylake Client platform
[   66.793201] Workqueue: deferwq deferred_probe_work_func
[   66.799173] task: ffff88008b700f40 ti: ffff88008b704000 task.ti: ffff88008b704000
[   66.807692] RIP: 0010:[<ffffffff806c94dd>]  [<ffffffff806c94dd>] strnlen+0xd/0x40
[   66.816243] RSP: 0018:ffff88008b707878  EFLAGS: 00010286
[   66.822293] RAX: ffffffff80e60a82 RBX: 000000000000000e RCX: fffffffffffffffe
[   66.830406] RDX: ffffc900001363fc RSI: ffffffffffffffff RDI: ffffc900001363fc
[   66.838520] RBP: ffff88008b707878 R08: 000000000000ffff R09: 000000000000ffff
[   66.846649] R10: 0000000000000001 R11: ffffffffa01c6368 R12: ffffc900001363fc
[   66.854765] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000
[   66.862910] FS:  0000000000000000(0000) GS:ffff88016ecc0000(0000) knlGS:0000000000000000
[   66.872150] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.878696] CR2: ffffc900001363fc CR3: 0000000002c09000 CR4: 00000000003406e0
[   66.886820] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   66.894938] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   66.903052] Stack:
[   66.905346]  ffff88008b7078b0 ffffffff806cb1db 000000000000000e 0000000000000000
[   66.913854]  ffff88008b707928 ffffffffa00d1050 ffffffffa00d104e ffff88008b707918
[   66.922353]  ffffffff806ccbd6 ffff88008b707948 0000000000000046 ffff88008b707940
[   66.930855] Call Trace:
[   66.933646]  [<ffffffff806cb1db>] string.isra.4+0x3b/0xd0
[   66.939793]  [<ffffffff806ccbd6>] vsnprintf+0x116/0x540
[   66.945742]  [<ffffffff806d02f0>] kvasprintf+0x40/0x80
[   66.951591]  [<ffffffff806d0370>] kasprintf+0x40/0x50
[   66.957359]  [<ffffffffa00c085f>] dapm_create_or_share_kcontrol+0x1cf/0x300 [snd_soc_core]
[   66.966771]  [<ffffffff8057dd1e>] ? __kmalloc+0x16e/0x2a0
[   66.972931]  [<ffffffffa00c0dab>] snd_soc_dapm_new_widgets+0x41b/0x4b0 [snd_soc_core]
[   66.981857]  [<ffffffffa00be8c0>] ? snd_soc_dapm_add_routes+0xb0/0xd0 [snd_soc_core]
[   67.007828]  [<ffffffffa00b92ed>] soc_probe_component+0x23d/0x360 [snd_soc_core]
[   67.016244]  [<ffffffff80b14e69>] ? mutex_unlock+0x9/0x10
[   67.022405]  [<ffffffffa00ba02f>] snd_soc_instantiate_card+0x47f/0xd10 [snd_soc_core]
[   67.031329]  [<ffffffff8049eeb2>] ? debug_mutex_init+0x32/0x40
[   67.037973]  [<ffffffffa00baa92>] snd_soc_register_card+0x1d2/0x2b0 [snd_soc_core]
[   67.046619]  [<ffffffffa00c8b54>] devm_snd_soc_register_card+0x44/0x80 [snd_soc_core]
[   67.055539]  [<ffffffffa01c303b>] skylake_audio_probe+0x1b/0x20 [snd_soc_skl_rt286]
[   67.064292]  [<ffffffff808aa887>] platform_drv_probe+0x37/0x90

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
8 years agoaf_unix: Fix splice-bind deadlock
Rainer Weikusat [Sun, 3 Jan 2016 18:56:38 +0000 (18:56 +0000)]
af_unix: Fix splice-bind deadlock

On 2015/11/06, Dmitry Vyukov reported a deadlock involving the splice
system call and AF_UNIX sockets,

http://lists.openwall.net/netdev/2015/11/06/24

The situation was analyzed as

(a while ago) A: socketpair()
B: splice() from a pipe to /mnt/regular_file
does sb_start_write() on /mnt
C: try to freeze /mnt
wait for B to finish with /mnt
A: bind() try to bind our socket to /mnt/new_socket_name
lock our socket, see it not bound yet
decide that it needs to create something in /mnt
try to do sb_start_write() on /mnt, block (it's
waiting for C).
D: splice() from the same pipe to our socket
lock the pipe, see that socket is connected
try to lock the socket, block waiting for A
B: get around to actually feeding a chunk from
pipe to file, try to lock the pipe.  Deadlock.

on 2015/11/10 by Al Viro,

http://lists.openwall.net/netdev/2015/11/10/4

The patch fixes this by removing the kern_path_create related code from
unix_mknod and executing it as part of unix_bind prior acquiring the
readlock of the socket in question. This means that A (as used above)
will sb_start_write on /mnt before it acquires the readlock, hence, it
won't indirectly block B which first did a sb_start_write and then
waited for a thread trying to acquire the readlock. Consequently, A
being blocked by C waiting for B won't cause a deadlock anymore
(effectively, both A and B acquire two locks in opposite order in the
situation described above).

Dmitry Vyukov(<dvyukov@google.com>) tested the original patch.

Signed-off-by: Rainer Weikusat <rweikusat@mobileactivedefense.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Propagate lookup failure in l3mdev_get_saddr to caller
David Ahern [Mon, 4 Jan 2016 17:09:27 +0000 (09:09 -0800)]
net: Propagate lookup failure in l3mdev_get_saddr to caller

Commands run in a vrf context are not failing as expected on a route lookup:
    root@kenny:~# ip ro ls table vrf-red
    unreachable default

    root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
    ping: Warning: source address might be selected on device other than vrf-red.
    PING 10.100.1.254 (10.100.1.254) from 0.0.0.0 vrf-red: 56(84) bytes of data.

    --- 10.100.1.254 ping statistics ---
    2 packets transmitted, 0 received, 100% packet loss, time 999ms

Since the vrf table does not have a route for 10.100.1.254 the ping
should have failed. The saddr lookup causes a full VRF table lookup.
Propogating a lookup failure to the user allows the command to fail as
expected:

    root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
    connect: No route to host

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>