Commit Graph

751994 Commits

Author SHA1 Message Date
Arnd Bergmann 453972283d mm/filemap.c: provide dummy filemap_page_mkwrite() for NOMMU
Building orangefs on MMU-less machines now results in a link error
because of the newly introduced use of the filemap_page_mkwrite()
function:

  ERROR: "filemap_page_mkwrite" [fs/orangefs/orangefs.ko] undefined!

This adds a dummy version for it, similar to the existing
generic_file_mmap and generic_file_readonly_mmap stubs in the same file,
to avoid the link error without adding #ifdefs in each file system that
uses these.

Link: http://lkml.kernel.org/r/20180409105555.2439976-1-arnd@arndb.de
Fixes: a5135eeab2 ("orangefs: implement vm_ops->fault")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin Brandenburg <martin@omnibond.com>
Cc: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
Michael S. Tsirkin d081107867 mm/gup.c: document return value
__get_user_pages_fast handles errors differently from
get_user_pages_fast: the former always returns the number of pages
pinned, the later might return a negative error code.

Link: http://lkml.kernel.org/r/1522962072-182137-6-git-send-email-mst@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
Michael S. Tsirkin c61611f709 get_user_pages_fast(): return -EFAULT on access_ok failure
get_user_pages_fast is supposed to be a faster drop-in equivalent of
get_user_pages.  As such, callers expect it to return a negative return
code when passed an invalid address, and never expect it to return 0
when passed a positive number of pages, since its documentation says:

 * Returns number of pages pinned. This may be fewer than the number
 * requested. If nr_pages is 0 or negative, returns 0. If no pages
 * were pinned, returns -errno.

When get_user_pages_fast fall back on get_user_pages this is exactly
what happens.  Unfortunately the implementation is inconsistent: it
returns 0 if passed a kernel address, confusing callers: for example,
the following is pretty common but does not appear to do the right thing
with a kernel address:

        ret = get_user_pages_fast(addr, 1, writeable, &page);
        if (ret < 0)
                return ret;

Change get_user_pages_fast to return -EFAULT when supplied a kernel
address to make it match expectations.

All callers have been audited for consistency with the documented
semantics.

Link: http://lkml.kernel.org/r/1522962072-182137-4-git-send-email-mst@redhat.com
Fixes: 5b65c4677a ("mm, x86/mm: Fix performance regression in get_user_pages_fast()")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
Michael S. Tsirkin 09e35a4a1c mm/gup_benchmark: handle gup failures
Patch series "mm/get_user_pages_fast fixes, cleanups", v2.

Turns out get_user_pages_fast and __get_user_pages_fast return different
values on error when given a single page: __get_user_pages_fast returns
0.  get_user_pages_fast returns either 0 or an error.

Callers of get_user_pages_fast expect an error so fix it up to return an
error consistently.

Stress the difference between get_user_pages_fast and
__get_user_pages_fast to make sure callers aren't confused.

This patch (of 3):

__gup_benchmark_ioctl does not handle the case where get_user_pages_fast
fails:

 - a negative return code will cause a buffer overrun

 - returning with partial success will cause use of uninitialized
   memory.

[akpm@linux-foundation.org: simplification]
Link: http://lkml.kernel.org/r/1522962072-182137-3-git-send-email-mst@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
Takashi Iwai 60bb83b811 resource: fix integer overflow at reallocation
We've got a bug report indicating a kernel panic at booting on an x86-32
system, and it turned out to be the invalid PCI resource assigned after
reallocation.  __find_resource() first aligns the resource start address
and resets the end address with start+size-1 accordingly, then checks
whether it's contained.  Here the end address may overflow the integer,
although resource_contains() still returns true because the function
validates only start and end address.  So this ends up with returning an
invalid resource (start > end).

There was already an attempt to cover such a problem in the commit
47ea91b405 ("Resource: fix wrong resource window calculation"), but
this case is an overseen one.

This patch adds the validity check of the newly calculated resource for
avoiding the integer overflow problem.

Bugzilla: http://bugzilla.opensuse.org/show_bug.cgi?id=1086739
Link: http://lkml.kernel.org/r/s5hpo37d5l8.wl-tiwai@suse.de
Fixes: 23c570a674 ("resource: ability to resize an allocated resource")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reported-by: Michael Henders <hendersm@shaw.ca>
Tested-by: Michael Henders <hendersm@shaw.ca>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13 17:10:27 -07:00
Linus Torvalds 48023102b7 Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
 "In addition to bug fixes and cleanups there are two new features from
  Amir:

   - Consistent inode number support for the case when layers are not
     all on the same filesystem (feature is dubbed "xino").

   - Optimize overlayfs file handle decoding. This one touches the
     exportfs interface to allow detecting the disconnected directory
     case"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: update documentation w.r.t "xino" feature
  ovl: add support for "xino" mount and config options
  ovl: consistent d_ino for non-samefs with xino
  ovl: consistent i_ino for non-samefs with xino
  ovl: constant st_ino for non-samefs with xino
  ovl: allocate anon bdev per unique lower fs
  ovl: factor out ovl_map_dev_ino() helper
  ovl: cleanup ovl_update_time()
  ovl: add WARN_ON() for non-dir redirect cases
  ovl: cleanup setting OVL_INDEX
  ovl: set d->is_dir and d->opaque for last path element
  ovl: Do not check for redirect if this is last layer
  ovl: lookup in inode cache first when decoding lower file handle
  ovl: do not try to reconnect a disconnected origin dentry
  ovl: disambiguate ovl_encode_fh()
  ovl: set lower layer st_dev only if setting lower st_ino
  ovl: fix lookup with middle layer opaque dir and absolute path redirects
  ovl: Set d->last properly during lookup
  ovl: set i_ino to the value of st_ino for NFS export
2018-04-13 16:55:41 -07:00
Linus Torvalds ba2b137d10 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui:

 - Fix race condition in imx_thermal_probe() (Mikhail Lappo)

 - Add cooling device's statistics in sysfs (Viresh Kumar)

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: Add cooling device's statistics in sysfs
  thermal: imx: Fix race condition in imx_thermal_probe()
2018-04-13 16:52:26 -07:00
Linus Torvalds 71893f1161 Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull dmi updates from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi_scan: Use lowercase letters for UUID
  firmware: dmi_scan: Add DMI_OEM_STRING support to dmi_matches
  firmware: dmi_scan: Fix UUID length safety check
2018-04-13 16:32:16 -07:00
Linus Torvalds f6811370b9 Changes to chrome-platform for v4.17
Incorporates a series from Dmitry to remove platform data from
 chromeos_laptop.c, which was the only user of platform data
 for the atmel_mxt_ts driver.
 
 Includes a series to clean up sysfs and debugfs for cros_ec.
 
 Other misc. cleanups.
 
 Thanks,
 Benson
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Merge tag 'chrome-platform-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform

Pull chrome platform updates from Benson Leung:

 - a series from Dmitry to remove platform data from chromeos_laptop.c,
   which was the only user of platform data for the atmel_mxt_ts driver.

 - a series to clean up sysfs and debugfs for cros_ec

 - other misc cleanups

* tag 'chrome-platform-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform: (22 commits)
  platform/chrome: mfd/cros_ec_dev: Add sysfs entry to set keyboard wake lid angle
  platform/chrome: cros_ec_debugfs: Add PD port info to debugfs
  platform/chrome: cros_ec_debugfs: Use octal permissions '0444'
  platform/chrome: cros_ec_sysfs: use permission-specific DEVICE_ATTR variants
  platform/chrome: cros_ec_sysfs: introduce to_cros_ec_dev define.
  platform/chrome: cros_ec_sysfs: Modify error handling
  platform/chrome: cros_ec_lpc: Add support for Google devices using custom coreboot firmware
  platform/chrome: cros_ec_lpc: wake up from s2idle on Chrome EC
  Input: atmel_mxt_ts - remove platform data support
  platform/chrome: chromeos_laptop - discard data for unneeded boards
  platform/chrome: chromeos_laptop - use device properties for Pixel
  platform/chrome: chromeos_laptop - rely on I2C to set up interrupt trigger
  platform/chrome: chromeos_laptop - use I2C notifier to create devices
  platform/chrome: chromeos_laptop - parse DMI IRQ data once
  platform/chrome: chromeos_laptop - rework i2c peripherals initialization
  platform/chrome: chromeos_laptop - factor out getting IRQ from DMI
  platform/chrome: chromeos_laptop - introduce pr_fmt()
  platform/chrome: chromeos_laptop - stop setting suspend mode for Atmel devices
  platform/chrome: chromeos_laptop - add SPDX identifier
  Input: atmel_mxt_ts - switch ChromeOS ACPI devices to generic props
  ...
2018-04-13 16:20:36 -07:00
Linus Torvalds ca4e7c5120 The large diff this time around is from the addition of a new clk driver
for the TI Davinci family of SoCs. So far those clks have been supported
 with a custom implementation of the clk API in the arch port instead of in
 the CCF. With this driver merged we're one step closer to having a single
 clk API implementation.
 
 The other large diff is from the Amlogic clk driver that underwent some
 major surgery to use regmap. Beyond that, the biggest hitter is Samsung
 which needed some reworks to properly handle clk provider power domains
 and a bunch of PLL rate updates.
 
 The core framework was fairly quiet this round, just getting some cleanups
 and small fixes for some of the more esoteric features. And the usual
 set of driver non-critical fixes, cleanups, and minor additions are here as
 well.
 
 Core:
  - Rejig clk_ops::init() to be a little earlier for phase/accuracy ops
  - debugfs ops macroized to shave some lines of boilerplate code
  - Always calculate the phase instead of caching it in clk_get_phase()
  - More __must_check on bulk clk APIs
 
 New Drivers:
  - TI's Davinci family of SoCs
  - Intel's Stratix10 SoC
  - stm32mp157 SoC
  - Allwinner H6 CCU
  - Silicon Labs SI544 clock generator chip
  - Renesas R-Car M3-N and V3H SoCs
  - i.MX6SLL SoCs
 
 Removed Drivers:
  - ST-Ericsson AB8540/9540
 
 Updates:
  - Mediatek MT2701 and MT7622 audsys support and MT2712 updates
  - STM32F469 DSI and STM32F769 sdmmc2 support
  - GPIO clks can sleep now
  - Spreadtrum SC9860 RTC clks
  - Nvidia Tegra MBIST workarounds and various minor fixes
  - Rockchip phase handling fixes and a memory leak plugged
  - Renesas drivers switch to readl/writel from clk_readl/clk_writel
  - Renesas gained CPU (Z/Z2) and watchdog support
  - Rockchip rk3328 display clks and rk3399 1.6GHz PLL support
  - Qualcomm PM8921 PMIC XO buffers
  - Amlogic migrates to regmap APIs
  - TI Keystone clk latching support
  - Allwinner H3 and H5 video clk fixes
  - Broadcom BCM2835 PLLs needed another bit to enable
  - i.MX6SX CKO mux fix and i.MX7D Video PLL divider fix
  - i.MX6UL/ULL epdc_podf support
  - Hi3798CV200 COMBPHY0 and USB2_OTG_UTMI and phase support for eMMC
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "The large diff this time around is from the addition of a new clk
  driver for the TI Davinci family of SoCs. So far those clks have been
  supported with a custom implementation of the clk API in the arch port
  instead of in the CCF. With this driver merged we're one step closer
  to having a single clk API implementation.

  The other large diff is from the Amlogic clk driver that underwent
  some major surgery to use regmap. Beyond that, the biggest hitter is
  Samsung which needed some reworks to properly handle clk provider
  power domains and a bunch of PLL rate updates.

  The core framework was fairly quiet this round, just getting some
  cleanups and small fixes for some of the more esoteric features. And
  the usual set of driver non-critical fixes, cleanups, and minor
  additions are here as well.

  Core:
   - Rejig clk_ops::init() to be a little earlier for phase/accuracy ops
   - debugfs ops macroized to shave some lines of boilerplate code
   - Always calculate the phase instead of caching it in clk_get_phase()
   - More __must_check on bulk clk APIs

  New Drivers:
   - TI's Davinci family of SoCs
   - Intel's Stratix10 SoC
   - stm32mp157 SoC
   - Allwinner H6 CCU
   - Silicon Labs SI544 clock generator chip
   - Renesas R-Car M3-N and V3H SoCs
   - i.MX6SLL SoCs

  Removed Drivers:
   - ST-Ericsson AB8540/9540

  Updates:
   - Mediatek MT2701 and MT7622 audsys support and MT2712 updates
   - STM32F469 DSI and STM32F769 sdmmc2 support
   - GPIO clks can sleep now
   - Spreadtrum SC9860 RTC clks
   - Nvidia Tegra MBIST workarounds and various minor fixes
   - Rockchip phase handling fixes and a memory leak plugged
   - Renesas drivers switch to readl/writel from clk_readl/clk_writel
   - Renesas gained CPU (Z/Z2) and watchdog support
   - Rockchip rk3328 display clks and rk3399 1.6GHz PLL support
   - Qualcomm PM8921 PMIC XO buffers
   - Amlogic migrates to regmap APIs
   - TI Keystone clk latching support
   - Allwinner H3 and H5 video clk fixes
   - Broadcom BCM2835 PLLs needed another bit to enable
   - i.MX6SX CKO mux fix and i.MX7D Video PLL divider fix
   - i.MX6UL/ULL epdc_podf support
   - Hi3798CV200 COMBPHY0 and USB2_OTG_UTMI and phase support for eMMC"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (233 commits)
  clk: davinci: add a reset lookup table for psc0
  clk: imx: add clock driver for imx6sll
  dt-bindings: imx: update clock doc for imx6sll
  clk: imx: add new gate/gate2 wrapper funtion
  clk: imx: Add CLK_IS_CRITICAL flag for busy divider and busy mux
  clk: cs2000: set pm_ops in hibernate-compatible way
  clk: bcm2835: De-assert/assert PLL reset signal when appropriate
  clk: imx7d: Move clks_init_on before any clock operations
  clk: imx7d: Correct ahb clk parent select
  clk: imx7d: Correct dram pll type
  clk: imx7d: Add USB clock information
  clk: socfpga: stratix10: add clock driver for Stratix10 platform
  dt-bindings: documentation: add clock bindings information for Stratix10
  clk: ti: fix flag space conflict with clkctrl clocks
  clk: uniphier: add additional ethernet clock lines for Pro4
  clk: uniphier: add SATA clock control support
  clk: uniphier: add PCIe clock control support
  clk: Add driver for the si544 clock generator chip
  clk: davinci: Remove redundant dev_err calls
  clk: uniphier: add ethernet clock control support for PXs3
  ...
2018-04-13 15:51:06 -07:00
Linus Torvalds daf3ef6e96 pwm: Changes for v4.17-rc1
This set of changes adds support for more generations of the RCar
 controller as well as runtime PM support. The JZ4740 driver gains
 support for device tree and can now be used on all Ingenic SoCs.
 
 Rounding things off is a random assortment of fixes and cleanups
 all across the board.
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Merge tag 'pwm/for-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This set of changes adds support for more generations of the RCar
  controller as well as runtime PM support. The JZ4740 driver gains
  support for device tree and can now be used on all Ingenic SoCs.

  Rounding things off is a random assortment of fixes and cleanups all
  across the board"

* tag 'pwm/for-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (29 commits)
  pwm: rcar: Add suspend/resume support
  pwm: rcar: Use PM Runtime to control module clock
  dt-bindings: pwm: rcar: Add bindings for R-Car M3N support
  pwm: rcar: Fix a condition to prevent mismatch value setting to duty
  pwm: sysfs: Use put_device() instead of kfree()
  dt-bindings: pwm: sunxi: Add new compatible strings
  pwm: sun4i: Simplify controller mapping
  pwm: sun4i: Drop unused .has_rdy member
  pwm: sun4i: Properly check current state
  pwm: Remove depends on AVR32
  pwm: stm32: LPTimer: Use 3 cells ->of_xlate()
  dt-bindings: pwm-stm32-lp: Add #pwm-cells
  pwm: stm32: Protect common prescaler for all channels
  pwm: stm32: Remove unused struct device
  pwm: mediatek: Improve precision in rate calculation
  pwm: mediatek: Remove redundant MODULE_ALIAS entries
  pwm: mediatek: Fix up PWM4 and PWM5 malfunction on MT7623
  pwm: jz4740: Enable for all Ingenic SoCs
  pwm: jz4740: Add support for devicetree
  pwm: jz4740: Implement ->set_polarity()
  ...
2018-04-13 15:46:21 -07:00
Linus Torvalds 41531f58a6 linux-watchdog 4.17-rc1 merge window tag
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Merge tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog updates from Wim Van Sebroeck:

 - Add Nuvoton NPCM watchdog driver

 - renesas_wdt: Add R-Car Gen2 support

 - renesas_wdt: add suspend/resume and restart handler support

 - hpwdt: convert to watchdog core and improve NMI

 - improve timeout setting/handling in various drivers

 - coh901327: make license text and module licence match

 - fix error handling in asm9260_wdt, sprd_wdt and davinci_wdt

 - aspeed imrovements

 - dw improvements (for control register & suspend/resume)

 - add SPDX identifiers for watchdog subsystem

* tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog: (35 commits)
  watchdog: davinci_wdt: fix error handling in davinci_wdt_probe()
  watchdog: add SPDX identifiers for watchdog subsystem
  watchdog: aspeed: Allow configuring for alternate boot
  watchdog: Add Nuvoton NPCM watchdog driver
  dt-bindings: watchdog: Add Nuvoton NPCM description
  watchdog: dw: save/restore control and timeout across suspend/resume
  watchdog: dw: RMW the control register
  watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable()
  watchdog: aspeed: Fix translation of reset mode to ctrl register
  watchdog: renesas_wdt: Add restart handler
  watchdog: renesas_wdt: Add R-Car Gen2 support
  watchdog: renesas_wdt: Add suspend/resume support
  watchdog: f71808e_wdt: Fix WD_EN register read
  watchdog: hpwdt: Update driver version.
  watchdog: hpwdt: Add dynamic debug
  watchdog: hpwdt: Programable Pretimeout NMI
  watchdog: hpwdt: remove allow_kdump module parameter.
  watchdog: hpwdt: condition early return of NMI handler on iLO5
  watchdog: hpwdt: Modify to use watchdog core.
  watchdog: hpwdt: Update nmi_panic message.
  ...
2018-04-13 15:43:50 -07:00
Linus Torvalds 80a17a5f50 + Features
- add base infrastructure for socket mediation. ABI bump and
     additional checks to ensure only v8 compliant policy uses
     socket af mediation.
   - improve and cleanup dfa verification
   - improve profile attachment logic
     - improve overlapping expression handling
     - add the xattr matching to the attachment logic
   - improve signal mediation handling with stacked labels
   - improve handling of no_new_privs in a label stack
 
 + Cleanups and changes
   - use dfa to parse string split
   - bounded version of label_parse
   - proper line wrap nulldfa.in
   - split context out into task and cred naming to better match usage
   - simplify code in aafs
 
 + Bug fixes
   - fix display of .ns_name for containers
   - fix resource audit messages when auditing peer
   - fix logging of the existence test for signals
   - fix resource audit messages when auditing peer
   - fix display of .ns_name for containers
   - fix an error code in verify_table_headers()
   - fix memory leak on buffer on error exit path
   - fix error returns checks by making size a ssize_t
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Merge tag 'apparmor-pr-2018-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor

Pull apparmor updates from John Johansen:
 "Features:
  - add base infrastructure for socket mediation. ABI bump and
    additional checks to ensure only v8 compliant policy uses socket af
    mediation.
  - improve and cleanup dfa verification
  - improve profile attachment logic
     - improve overlapping expression handling
     - add the xattr matching to the attachment logic
  - improve signal mediation handling with stacked labels
  - improve handling of no_new_privs in a label stack

  Cleanups and changes:
  - use dfa to parse string split
  - bounded version of label_parse
  - proper line wrap nulldfa.in
  - split context out into task and cred naming to better match usage
  - simplify code in aafs

  Bug fixes:
  - fix display of .ns_name for containers
  - fix resource audit messages when auditing peer
  - fix logging of the existence test for signals
  - fix resource audit messages when auditing peer
  - fix display of .ns_name for containers
  - fix an error code in verify_table_headers()
  - fix memory leak on buffer on error exit path
  - fix error returns checks by making size a ssize_t"

* tag 'apparmor-pr-2018-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (36 commits)
  apparmor: fix memory leak on buffer on error exit path
  apparmor: fix dangling symlinks to policy rawdata after replacement
  apparmor: Fix an error code in verify_table_headers()
  apparmor: fix error returns checks by making size a ssize_t
  apparmor: update MAINTAINERS file git and wiki locations
  apparmor: remove POLICY_MEDIATES_SAFE
  apparmor: add base infastructure for socket mediation
  apparmor: improve overlapping domain attachment resolution
  apparmor: convert attaching profiles via xattrs to use dfa matching
  apparmor: Add support for attaching profiles via xattr, presence and value
  apparmor: cleanup: simplify code to get ns symlink name
  apparmor: cleanup create_aafs() error path
  apparmor: dfa split verification of table headers
  apparmor: dfa add support for state differential encoding
  apparmor: dfa move character match into a macro
  apparmor: update domain transitions that are subsets of confinement at nnp
  apparmor: move context.h to cred.h
  apparmor: move task related defines and fns to task.X files
  apparmor: cleanup, drop unused fn __aa_task_is_confined()
  apparmor: cleanup fixup description of aa_replace_profiles
  ...
2018-04-13 15:38:53 -07:00
Linus Torvalds edda415314 for-linus-20180413
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Merge tag 'for-linus-20180413' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Followup fixes for this merge window. This contains:

   - Series from Ming, fixing corner cases in our CPU <-> queue mapping.

     This triggered repeated warnings on especially s390, but I also hit
     it in cpu hot plug/unplug testing while doing IO on NVMe on x86-64.

   - Another fix from Ming, ensuring that we always order budget and
     driver tag identically, avoiding a deadlock on QD=1 devices.

   - Loop locking regression fix from this merge window, from Omar.

   - Another loop locking fix, this time missing an unlock, from Tetsuo
     Handa.

   - Fix for racing IO submission with device removal from Bart.

   - sr reference fix from me, fixing a case where disk change or
     getevents can race with device removal.

   - Set of nvme fixes by way of Keith, from various contributors"

* tag 'for-linus-20180413' of git://git.kernel.dk/linux-block: (28 commits)
  nvme: expand nvmf_check_if_ready checks
  nvme: Use admin command effects for admin commands
  nvmet: fix space padding in serial number
  nvme: check return value of init_srcu_struct function
  nvmet: Fix nvmet_execute_write_zeroes sector count
  nvme-pci: Separate IO and admin queue IRQ vectors
  nvme-pci: Remove unused queue parameter
  nvme-pci: Skip queue deletion if there are no queues
  nvme: target: fix buffer overflow
  nvme: don't send keep-alives to the discovery controller
  nvme: unexport nvme_start_keep_alive
  nvme-loop: fix kernel oops in case of unhandled command
  nvme: enforce 64bit offset for nvme_get_log_ext fn
  sr: get/drop reference to device in revalidate and check_events
  blk-mq: Revert "blk-mq: reimplement blk_mq_hw_queue_mapped"
  blk-mq: Avoid that submitting a bio concurrently with device removal triggers a crash
  backing: silence compiler warning using __printf
  blk-mq: remove code for dealing with remapping queue
  blk-mq: reimplement blk_mq_hw_queue_mapped
  blk-mq: don't check queue mapped in __blk_mq_delay_run_hw_queue()
  ...
2018-04-13 15:15:15 -07:00
Linus Torvalds 3e565a351e Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:

 - hot bugfix for i801 to make laptops with strange BIOS reboot again
   when using SMBUS Host notify

 - change to MAINTAINERS creating a specific fallback entry for I2C host
   drivers and settings its status to "Odd fixes"

 - a long overdue param checking for the I2C core

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: add param sanity check to i2c_transfer()
  MAINTAINERS: add maintainer for Renesas I2C related drivers
  MAINTAINERS: remove me as maintainer for I2C host drivers
  i2c: i801: Restore configuration at shutdown
  i2c: i801: Save register SMBSLVCMD value only once
2018-04-13 15:13:18 -07:00
Linus Torvalds 1bad9ce155 Fixes for bugs in futex, device tree, and userspace breakpoint traps,
and for PCI issues on SH7786.
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Merge tag 'sh-for-4.17' of git://git.libc.org/linux-sh

Pull arch/sh updates from Rich Felker:
 "Fixes for bugs in futex, device tree, and userspace breakpoint traps,
  and for PCI issues on SH7786"

* tag 'sh-for-4.17' of git://git.libc.org/linux-sh:
  arch/sh: pcie-sh7786: handle non-zero DMA offset
  arch/sh: pcie-sh7786: adjust the memory mapping
  arch/sh: pcie-sh7786: adjust PCI MEM and IO regions
  arch/sh: pcie-sh7786: exclude unusable PCI MEM areas
  arch/sh: pcie-sh7786: mark unavailable PCI resource as disabled
  arch/sh: pci: don't use disabled resources
  arch/sh: make the DMA mapping operations observe dev->dma_pfn_offset
  arch/sh: add sh7786_mm_sel() function
  sh: fix debug trap failure to process signals before return to user
  sh: fix memory corruption of unflattened device tree
  sh: fix futex FUTEX_OP_SET op on userspace addresses
2018-04-13 12:27:11 -07:00
Linus Torvalds e4e57f20fa Additional arm64 updates for 4.17
A few late updates to address some issues arising from conflicts with
 other trees:
 
 - Removal of Qualcomm-specific Spectre-v2 mitigation in favour of the
   generic SMCCC-based firmware call
 
 - Fix EL2 hardening capability checking, which was bodged to reduce
   conflicts with the KVM tree
 
 - Add some currently unused assembler macros for managing SIMD registers
   which will be used by some crypto code in the next merge window
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull more arm64 updates from Will Deacon:
 "A few late updates to address some issues arising from conflicts with
  other trees:

   - Removal of Qualcomm-specific Spectre-v2 mitigation in favour of the
     generic SMCCC-based firmware call

   - Fix EL2 hardening capability checking, which was bodged to reduce
     conflicts with the KVM tree

   - Add some currently unused assembler macros for managing SIMD
     registers which will be used by some crypto code in the next merge
     window"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: assembler: add macros to conditionally yield the NEON under PREEMPT
  arm64: assembler: add utility macros to push/pop stack frames
  arm64: Move the content of bpi.S to hyp-entry.S
  arm64: Get rid of __smccc_workaround_1_hvc_*
  arm64: capabilities: Rework EL2 vector hardening entry
  arm64: KVM: Use SMCCC_ARCH_WORKAROUND_1 for Falkor BP hardening
2018-04-13 11:24:18 -07:00
Linus Torvalds 6c21e4334a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull  more s390 updates from Martin Schwidefsky:
 "Three notable larger changes next to the usual bug fixing:

   - update the email addresses in MAINTAINERS for the s390 folks to use
     the simpler linux.ibm.com domain instead of the old
     linux.vnet.ibm.com

   - an update for the zcrypt device driver that removes some old and
     obsolete interfaces and add support for up to 256 crypto adapters

   - a rework of the IPL aka boot code"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
  s390: correct nospec auto detection init order
  s390/zcrypt: Support up to 256 crypto adapters.
  s390/zcrypt: Remove deprecated zcrypt proc interface.
  s390/zcrypt: Remove deprecated ioctls.
  s390/zcrypt: Make ap init functions static.
  MAINTAINERS: update s390 maintainers email addresses
  s390/ipl: remove reipl_method and dump_method
  s390/ipl: correct kdump reipl block checksum calculation
  s390/ipl: remove non-existing functions declaration
  s390: assume diag308 set always works
  s390/ipl: avoid adding scpdata to cmdline during ftp/dvd boot
  s390/ipl: correct ipl parmblock valid checks
  s390/ipl: rely on diag308 store to get ipl info
  s390/ipl: move ipl_flags to ipl.c
  s390/ipl: get rid of ipl_ssid and ipl_devno
  s390/ipl: unite diag308 and scsi boot ipl blocks
  s390/ipl: ensure loadparm valid flag is set
  s390/qdio: lock device while installing IRQ handler
  s390/qdio: clear intparm during shutdown
  s390/ccwgroup: require at least one ccw device
  ...
2018-04-13 09:43:20 -07:00
Don Zickus 17baab68d3 kconfig: extend output of 'listnewconfig'
We at Red Hat/Fedora have generally tried to have a per file breakdown of
every config option we set.  This makes it easy for us to add new options
when they are exposed and keep a changelog of why they were set.

A Fedora example is here:
  https://src.fedoraproject.org/cgit/rpms/kernel.git/tree/configs/fedora/generic

Using various merge scripts, we build up a config file and run it through
'make listnewconfig' and 'make oldnoconfig'.   The idea is to print out new
config options that haven't been manually set and use the default until
a patch is posted to set it properly.

To speed things up, it would be nice to make it easier to generate a
patch to post the default setting.  The output of 'make listnewconfig'
has two issues that limit us:

- it doesn't provide the default value
- it doesn't provide the new 'choice' options that get flagged in
  'oldconfig'

This patch extends 'listnewconfig' to address the above two issues.

This allows us to run a script

make listnewconfig | rhconfig-tool -o patches; git send-email patches/

The output of 'make listnewconfig':

CONFIG_NET_EMATCH_IPT
CONFIG_IPVLAN
CONFIG_ICE
CONFIG_NET_VENDOR_NI
CONFIG_IEEE802154_MCR20A
CONFIG_IR_IMON_DECODER
CONFIG_IR_IMON_RAW

The new output of 'make listnewconfig':

CONFIG_KERNEL_XZ=n
CONFIG_KERNEL_LZO=n
CONFIG_NET_EMATCH_IPT=n
CONFIG_IPVLAN=n
CONFIG_ICE=n
CONFIG_NET_VENDOR_NI=y
CONFIG_IEEE802154_MCR20A=n
CONFIG_IR_IMON_DECODER=n
CONFIG_IR_IMON_RAW=n

Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-04-13 23:23:11 +09:00
Javier Martinez Canillas eea6f62bc2 kbuild: rpm-pkg: use kernel-install as a fallback for new-kernel-pkg
The new-kernel-pkg script is only present when grubby is installed, but it
may not always be the case. So if the script isn't present, attempt to use
the kernel-install script as a fallback instead.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-04-13 23:18:41 +09:00
Qu Wenruo 5d41be6f70 btrfs: Only check first key for committed tree blocks
When looping btrfs/074 with many cpus (>= 8), it's possible to trigger
kernel warning due to first key verification:

[ 4239.523446] WARNING: CPU: 5 PID: 2381 at fs/btrfs/disk-io.c:460 btree_read_extent_buffer_pages+0x1ad/0x210
[ 4239.523830] Modules linked in:
[ 4239.524630] RIP: 0010:btree_read_extent_buffer_pages+0x1ad/0x210
[ 4239.527101] Call Trace:
[ 4239.527251]  read_tree_block+0x42/0x70
[ 4239.527434]  read_node_slot+0xd2/0x110
[ 4239.527632]  push_leaf_right+0xad/0x1b0
[ 4239.527809]  split_leaf+0x4ea/0x700
[ 4239.527988]  ? leaf_space_used+0xbc/0xe0
[ 4239.528192]  ? btrfs_set_lock_blocking_rw+0x99/0xb0
[ 4239.528416]  btrfs_search_slot+0x8cc/0xa40
[ 4239.528605]  btrfs_insert_empty_items+0x71/0xc0
[ 4239.528798]  __btrfs_run_delayed_refs+0xa98/0x1680
[ 4239.529013]  btrfs_run_delayed_refs+0x10b/0x1b0
[ 4239.529205]  btrfs_commit_transaction+0x33/0xaf0
[ 4239.529445]  ? start_transaction+0xa8/0x4f0
[ 4239.529630]  btrfs_alloc_data_chunk_ondemand+0x1b0/0x4e0
[ 4239.529833]  btrfs_check_data_free_space+0x54/0xa0
[ 4239.530045]  btrfs_delalloc_reserve_space+0x25/0x70
[ 4239.531907]  btrfs_direct_IO+0x233/0x3d0
[ 4239.532098]  generic_file_direct_write+0xcb/0x170
[ 4239.532296]  btrfs_file_write_iter+0x2bb/0x5f4
[ 4239.532491]  aio_write+0xe2/0x180
[ 4239.532669]  ? lock_acquire+0xac/0x1e0
[ 4239.532839]  ? __might_fault+0x3e/0x90
[ 4239.533032]  do_io_submit+0x594/0x860
[ 4239.533223]  ? do_io_submit+0x594/0x860
[ 4239.533398]  SyS_io_submit+0x10/0x20
[ 4239.533560]  ? SyS_io_submit+0x10/0x20
[ 4239.533729]  do_syscall_64+0x75/0x1d0
[ 4239.533979]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 4239.534182] RIP: 0033:0x7f8519741697

The problem here is, at btree_read_extent_buffer_pages() we don't have
acquired read/write lock on that extent buffer, only basic info like
level/bytenr is reliable.

So race condition leads to such false alert.

However in current call site, it's impossible to acquire proper lock
without race window.
To fix the problem, we only verify first key for committed tree blocks
(whose generation is no larger than fs_info->last_trans_committed), so
the content of such tree blocks will not change and there is no need to
get read/write lock.

Reported-by: Nikolay Borisov <nborisov@suse.com>
Fixes: 581c176041 ("btrfs: Validate child tree block's level and first key")
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-04-13 16:16:15 +02:00
Michael Ellerman 81b654c273 powerpc/64s: Fix CPU_FTRS_ALWAYS vs DT CPU features
The cpu_has_feature() mechanism has an optimisation where at build
time we construct a mask of the CPU feature bits that will always be
true for the given .config, based on the platform/bitness/etc. that we
are building for.

That is incompatible with DT CPU features, where the set of CPU
features is dependent on feature flags that are given to us by
firmware.

The result is that some feature bits can not be *disabled* by DT CPU
features. Or more accurately, they can be disabled but they will still
appear in the ALWAYS mask, meaning cpu_has_feature() will always
return true for them.

In the past this hasn't really been a problem because on Book3S
64 (where we support DT CPU features), the set of ALWAYS bits has been
very small. That was because we always built for POWER4 and later,
meaning the set of common bits was small.

The only bit that could be cleared by DT CPU features that was also in
the ALWAYS mask was CPU_FTR_NODSISRALIGN, and that was only used in
the alignment handler to create a fake DSISR. That code was itself
deleted in 31bfdb036f ("powerpc: Use instruction emulation
infrastructure to handle alignment faults") (Sep 2017).

However the set of ALWAYS features changed with the recent commit
db5ae1c155 ("powerpc/64s: Refine feature sets for little endian
builds") which restricted the set of feature flags when building
little endian to Power7 or later. That caused the ALWAYS mask to
become much larger for little endian builds.

The result is that the following feature bits can currently not
be *disabled* by DT CPU features:

  CPU_FTR_REAL_LE, CPU_FTR_MMCRA, CPU_FTR_CTRL, CPU_FTR_SMT,
  CPU_FTR_PURR, CPU_FTR_SPURR, CPU_FTR_DSCR, CPU_FTR_PKEY,
  CPU_FTR_VMX_COPY, CPU_FTR_CFAR, CPU_FTR_HAS_PPR.

To fix it we need to mask the set of ALWAYS features with the base set
of DT CPU features, ie. the features that are always enabled by DT CPU
features. That way there are no bits in the ALWAYS mask that are not
also always set by DT CPU features.

Fixes: db5ae1c155 ("powerpc/64s: Refine feature sets for little endian builds")
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-13 23:51:44 +10:00
Jean Delvare 712ff25450 firmware: dmi_scan: Use lowercase letters for UUID
RFC 4122 asks for letters a-f in UUID to be lowercase. Follow this
recommendation.

Suggested by Paul Dagnelie at:
https://savannah.nongnu.org/bugs/index.php?53569

Signed-off-by: Jean Delvare <jdelvare@suse.de>
2018-04-13 15:37:59 +02:00
Alex Hung de40614de9 firmware: dmi_scan: Add DMI_OEM_STRING support to dmi_matches
OEM strings are defined by each OEM and they contain customized and
useful OEM information. Supporting it provides more flexible uses of
the dmi_matches function.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2018-04-13 15:37:59 +02:00
Jean Delvare 90fe6f8ff0 firmware: dmi_scan: Fix UUID length safety check
The test which ensures that the DMI type 1 structure is long enough
to hold the UUID is off by one. It would fail if the structure is
exactly 24 bytes long, while that's sufficient to hold the UUID.

I don't expect this bug to cause problem in practice because all
implementations I have seen had length 8, 25 or 27 bytes, in line
with the SMBIOS specifications. But let's fix it still.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: a814c3597a ("firmware: dmi_scan: Check DMI structure length")
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2018-04-13 15:37:59 +02:00
Zhang Rui b907b408ca Merge branches 'thermal-core' and 'thermal-soc' into next 2018-04-13 14:11:53 +08:00
Linus Torvalds 16e205cf42 amdgpu, omap and snd regression fix
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Merge tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One omap, and one alsa pm fix (we merged the breaking patch via drm
  tree).

  Otherwise it's two bunches of amdgpu fixes, removing an unneeded file,
  some DC fixes, HDMI audio regression fix, and some vega12 fixes"

* tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux: (27 commits)
  Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)"
  Revert "drm/amd/display: fix dereferencing possible ERR_PTR()"
  drm/amd/display: Fix regamma not affecting full-intensity color values
  drm/amd/display: Fix FBC text console corruption
  drm/amd/display: Only register backlight device if embedded panel connected
  drm/amd/display: fix brightness level after resume from suspend
  drm/amd/display: HDMI has no sound after Panel power off/on
  drm/amdgpu: add MP1 and THM hw ip base reg offset
  drm/amdgpu: fix null pointer panic with direct fw loading on gpu reset
  drm/radeon: add PX quirk for Asus K73TK
  drm/omap: fix crash if there's no video PLL
  drm/amdgpu: Fix memory leaks at amdgpu_init() error path
  drm/amdgpu: Fix PCIe lane width calculation
  drm/radeon: Fix PCIe lane width calculation
  drm/amdgpu/si: implement get/set pcie_lanes asic callback
  drm/amdgpu: Add support for SRBM selection v3
  Revert "drm/amdgpu: Don't change preferred domian when fallback GTT v5"
  drm/amd/powerply: fix power reading on Fiji
  drm/amd/powerplay: Enable ACG SS feature
  drm/amdgpu/sdma: fix mask in emit_pipeline_sync
  ...
2018-04-12 20:56:10 -07:00
Linus Torvalds affb028071 A few clean ups and bug fixes
- Replace open coded "ARRAY_SIZE()" with macro
 
  - Updates to uprobes
 
  - Bug fix for perf event filter on error path
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Merge tag 'trace-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "A few clean ups and bug fixes:

   - replace open coded "ARRAY_SIZE()" with macro

   - updates to uprobes

   - bug fix for perf event filter on error path"

* tag 'trace-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Enforce passing in filter=NULL to create_filter()
  trace_uprobe: Simplify probes_seq_show()
  trace_uprobe: Use %lx to display offset
  tracing/uprobe: Add support for overlayfs
  tracing: Use ARRAY_SIZE() macro instead of open coding it
2018-04-12 20:54:01 -07:00
Alexey Dobriyan ee9294d6dd proc: fixup copyright sign
Add copyright in two files before they get autorubberstamped.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-12 20:52:25 -07:00
Linus Torvalds 0c314a9515 pci-v4.17-changes-2
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Merge tag 'pci-v4.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - mark Extended Tags as broken on Broadcom HT1100 and HT2000 Root Ports
   to fix drm/Xorg hangs and unresponsive keyboards (Sinan Kaya)

 - remove useless messages during resource reassignment (Desnes A. Nunes
   do Rosario)

* tag 'pci-v4.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Remove messages about reassigning resources
  PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as broken
2018-04-12 20:50:38 -07:00
Ronnie Sahlberg c1596ff524 cifs: change validate_buf to validate_iov
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-04-12 20:32:55 -05:00
Ronnie Sahlberg 05432e2938 cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data()
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-04-12 20:32:53 -05:00
Ronnie Sahlberg 91cb74f514 cifs: Change SMB2_open to return an iov for the error parameter
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-04-12 20:32:50 -05:00
Ronnie Sahlberg e19b2bc079 cifs: add resp_buf_size to the mid_q_entry structure
and get rid of some more calls to get_rfc1002_length()

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-04-12 20:32:48 -05:00
Steve French 0d4b46ba7d smb3.11: replace a 4 with server->vals->header_preamble_size
More cleanup of use of hardcoded 4 byte RFC1001 field size

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-04-12 20:32:13 -05:00
Linus Torvalds 681857ef0d Merge branch 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:

 - fix panic when halting system via "shutdown -h now"

 - drop own coding in favour of generic CONFIG_COMPAT_BINFMT_ELF
   implementation

 - add FPE_CONDTRAP constant: last outstanding parisc-specific cleanup
   for Eric Biedermans siginfo patches

 - move some functions to .init and some to .text.hot linker sections

* 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Prevent panic at system halt
  parisc: Switch to generic COMPAT_BINFMT_ELF
  parisc: Move cache flush functions into .text.hot section
  parisc/signal: Add FPE_CONDTRAP for conditional trap handling
2018-04-12 17:07:04 -07:00
Thomas Petazzoni bf9c7e3d79 arch/sh: pcie-sh7786: handle non-zero DMA offset
On SuperH, the base of the physical memory might be different from
zero. In this case, PCI address zero will map to a non-zero physical
address. In order to make sure that the DMA mapping API takes care of
this DMA offset, we must fill in the dev->dma_pfn_offset field for PCI
devices. This gets done in the pcibios_bus_add_device() hook, called
for each new PCI device detected.

The dma_pfn_offset global variable is re-calculated for every PCI
controller available on the platform, but that's not an issue because
its value will each time be exactly the same, as it only depends on
the memory start address and memory size.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:58 -04:00
Thomas Petazzoni 79e1c5e70b arch/sh: pcie-sh7786: adjust the memory mapping
The code setting up the PCI -> SuperHighway mapping doesn't take into
account the fact that the address stored in PCIELARx must be aligned
with the size stored in PCIELAMRx.

For example, when your physical memory starts at 0x0800_0000 (128 MB),
a size of 64 MB or 128 MB is fine. However, if you have 256 MB of
memory, it doesn't work because the base address is not aligned on the
size.

In such situation, we have to round down the base address to make sure
it is aligned on the size of the area. For for a 0x0800_0000 base
address with 256 MB of memory, we will round down to 0x0, and extend
the size of the mapping to 512 MB.

This allows the mapping to work on platforms that have 256 MB of
RAM. The current setup would only work with 128 MB of RAM or less.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:58 -04:00
Thomas Petazzoni 5da1bb96dc arch/sh: pcie-sh7786: adjust PCI MEM and IO regions
The current definition of the PCIe IO and MEM resources for SH7786
doesn't match what the datasheet says. For example, for PCIe0
0xfe100000 is advertised by the datasheet as a PCI IO region, while
0xfd000000 is advertised as a PCI MEM region. The code currently
inverts the two.

The SH4A_PCIEPARL and SH4A_PCIEPTCTLR registers allow to define the
base address and role of the different regions (including whether it's
a MEM or IO region). However, practical experience on a SH7786 shows
that if 0xfe100000 is used for LEL and 0xfd000000 for IO, a PCIe
device using two MEM BARs cannot be accessed at all. Simply using
0xfe100000 for IO and 0xfd000000 for MEM makes the PCIe device
accessible.

It is very likely that this was never seen because there are two other
PCI MEM region listed in the resources. However, for different
reasons, none of the two other MEM regions are usable on the specific
SH7786 platform the problem was encountered. Therefore, the last MEM
region at 0xfe100000 was used to place the BARs, making the device
non-functional.

This commit therefore adjusts those PCI MEM and IO resources
definitions so that they match what the datasheet says. They have only
been tested with PCIe 0.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:57 -04:00
Thomas Petazzoni d62e9bf5dd arch/sh: pcie-sh7786: exclude unusable PCI MEM areas
Depending on the physical memory layout, some PCI MEM areas are not
usable. According to the SH7786 datasheet, the PCI MEM area from
1000_0000 to 13FF_FFFF is only usable if the physical memory layout
(in MMSELR) is 1, 2, 5 or 6. In all other configurations, this PCI MEM
area is not usable (because it overlaps with DRAM).

Therefore, this commit adjusts the PCI SH7786 initialization to mark
the relevant PCI resource as IORESOURCE_DISABLED if we can't use it.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:56 -04:00
Thomas Petazzoni 7dd7f69809 arch/sh: pcie-sh7786: mark unavailable PCI resource as disabled
Some PCI MEM resources are marked as IORESOURCE_MEM_32BIT, which means
they are only usable when the SH core runs in 32-bit mode. In 29-bit
mode, such memory regions are not usable.

The existing code for SH7786 properly skips such regions when
configuring the PCIe controller registers. However, because such
regions are still described in the resource array, the
pcibios_scanbus() function in the SuperH pci.c will register them to
the PCI core. Due to this, the PCI core will allocate MEM areas from
this resource, and assign BARs pointing to this area, even though it's
unusable.

In order to prevent this from happening, we mark such regions as
IORESOURCE_DISABLED, which tells the SuperH pci.c pcibios_scanbus()
function to skip them.

Note that we separate marking the region as disabled from skipping it,
because other regions will be marked as disabled in follow-up patches.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:55 -04:00
Thomas Petazzoni 3aeb93a014 arch/sh: pci: don't use disabled resources
In pcibios_scanbus(), we provide to the PCI core the usable MEM and IO
regions using pci_add_resource_offset(). We travel through all
resources available in the "struct pci_channel".

Also, in register_pci_controller(), we travel through all resources to
request them, making sure they don't conflict with already requested
resources.

However, some resources may be disabled, in which case they should not
be requested nor provided to the PCI core.

In the current situation, none of the resources are disabled. However,
follow-up patches in this series will make some resources disabled,
making this preliminary change necessary.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:54 -04:00
Thomas Petazzoni ce88313069 arch/sh: make the DMA mapping operations observe dev->dma_pfn_offset
Some devices may have a non-zero DMA offset, i.e an offset between the
DMA address and the physical address. Such an offset can be encoded
into the dma_pfn_offset field of "struct device", but the SuperH
implementation of the DMA mapping API does not observe this
information.

This commit fixes that by ensuring the DMA address is properly
calculated depending on this DMA offset.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:53 -04:00
Thomas Petazzoni bc05aa6e13 arch/sh: add sh7786_mm_sel() function
The SH7786 has different physical memory layout configurations,
configurable through the MMSELR register. The configuration is
typically defined by the bootloader, so Linux generally doesn't care.

Except that depending on the configuration, some PCI MEM areas may or
may not be available. This commit adds a helper function that allows
to retrieve the current physical memory layout configuration. It will
be used in a following patch to exclude unusable PCI MEM areas during
the PCI initialization.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:53 -04:00
Rich Felker 96a598996f sh: fix debug trap failure to process signals before return to user
When responding to a debug trap (breakpoint) in userspace, the
kernel's trap handler raised SIGTRAP but returned from the trap via a
code path that ignored pending signals, resulting in an infinite loop
re-executing the trapping instruction.

Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:52 -04:00
Rich Felker eb6b6930a7 sh: fix memory corruption of unflattened device tree
unflatten_device_tree() makes use of memblock allocation, and
therefore must be called before paging_init() migrates the memblock
allocation data to the bootmem framework. Otherwise the record of the
allocation for the expanded device tree will be lost, and will
eventually be clobbered when allocated for another use.

Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:51 -04:00
Aurelien Jarno 9b7e30ab97 sh: fix futex FUTEX_OP_SET op on userspace addresses
Commit 00b73d8d1b ("sh: add working futex atomic ops on userspace
addresses for smp") changed the futex_atomic_op_inuser function to
use a loop. In case of the FUTEX_OP_SET op with a userspace address
containing a value different of 0, this loop is an endless loop.

Fix that by loading the value of oldval from the userspace before doing
the cmpxchg op, also for the FUTEX_OP_SET case.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Rich Felker <dalias@libc.org>
2018-04-12 19:47:50 -04:00
Dave Airlie a10beabba2 Merge branch 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-next
- Add a PX quirk for radeon
- Fix flickering and stability issues with DC on some platforms
- Fix HDMI audio regression
- Few other misc DC and base driver fixes

* 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux:
  Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)"
  Revert "drm/amd/display: fix dereferencing possible ERR_PTR()"
  drm/amd/display: Fix regamma not affecting full-intensity color values
  drm/amd/display: Fix FBC text console corruption
  drm/amd/display: Only register backlight device if embedded panel connected
  drm/amd/display: fix brightness level after resume from suspend
  drm/amd/display: HDMI has no sound after Panel power off/on
  drm/amdgpu: add MP1 and THM hw ip base reg offset
  drm/amdgpu: fix null pointer panic with direct fw loading on gpu reset
  drm/radeon: add PX quirk for Asus K73TK
2018-04-13 09:25:21 +10:00
Dave Airlie dece02f71d omap: Fix crash on AM4 EVM, and all OMAP2/3 boards (Tomi)
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Merge tag 'drm-misc-next-fixes-2018-04-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

omap: Fix crash on AM4 EVM, and all OMAP2/3 boards (Tomi)

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>

* tag 'drm-misc-next-fixes-2018-04-11' of git://anongit.freedesktop.org/drm/drm-misc:
  drm/omap: fix crash if there's no video PLL
2018-04-13 09:25:07 +10:00
Ronnie Sahlberg 9fdd2e0034 cifs: replace a 4 with server->vals->header_preamble_size
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-04-12 17:12:22 -05:00