openwrt/staging/blogic.git
5 years agowatchdog: stmp3xxx_rtc_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:57 +0000 (23:27 +0200)]
watchdog: stmp3xxx_rtc_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: stm32_iwdg: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:56 +0000 (23:27 +0200)]
watchdog: stm32_iwdg: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: st_lpc_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:55 +0000 (23:27 +0200)]
watchdog: st_lpc_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: sprd_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:54 +0000 (23:27 +0200)]
watchdog: sprd_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: sp805_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:53 +0000 (23:27 +0200)]
watchdog: sp805_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: sp5100_tco: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:52 +0000 (23:27 +0200)]
watchdog: sp5100_tco: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: sama5d4_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:51 +0000 (23:27 +0200)]
watchdog: sama5d4_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: s3c2410_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:50 +0000 (23:27 +0200)]
watchdog: s3c2410_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: rave-sp-wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:49 +0000 (23:27 +0200)]
watchdog: rave-sp-wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: qcom-wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:48 +0000 (23:27 +0200)]
watchdog: qcom-wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: pnx4008_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:47 +0000 (23:27 +0200)]
watchdog: pnx4008_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: pic32-wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:46 +0000 (23:27 +0200)]
watchdog: pic32-wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: pic32-dmt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:45 +0000 (23:27 +0200)]
watchdog: pic32-dmt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: of_xilinx_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:44 +0000 (23:27 +0200)]
watchdog: of_xilinx_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: npcm_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:43 +0000 (23:27 +0200)]
watchdog: npcm_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: nic7018_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:42 +0000 (23:27 +0200)]
watchdog: nic7018_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: ni903x_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:41 +0000 (23:27 +0200)]
watchdog: ni903x_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: mpc8xxx_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:40 +0000 (23:27 +0200)]
watchdog: mpc8xxx_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: menf21bmc_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:39 +0000 (23:27 +0200)]
watchdog: menf21bmc_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: mena21_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:38 +0000 (23:27 +0200)]
watchdog: mena21_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: mei_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:37 +0000 (23:27 +0200)]
watchdog: mei_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: max77620_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:36 +0000 (23:27 +0200)]
watchdog: max77620_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: loongson1_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:35 +0000 (23:27 +0200)]
watchdog: loongson1_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: jz4740_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:34 +0000 (23:27 +0200)]
watchdog: jz4740_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: intel-mid_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:33 +0000 (23:27 +0200)]
watchdog: intel-mid_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: imx_sc_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:32 +0000 (23:27 +0200)]
watchdog: imx_sc_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: imx2_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:31 +0000 (23:27 +0200)]
watchdog: imx2_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: ie6xx_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:30 +0000 (23:27 +0200)]
watchdog: ie6xx_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: i6300esb: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:29 +0000 (23:27 +0200)]
watchdog: i6300esb: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: hpwdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:28 +0000 (23:27 +0200)]
watchdog: hpwdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: ftwdt010_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:27 +0000 (23:27 +0200)]
watchdog: ftwdt010_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: digicolor_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:26 +0000 (23:27 +0200)]
watchdog: digicolor_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: davinci_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:25 +0000 (23:27 +0200)]
watchdog: davinci_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: da9062_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:24 +0000 (23:27 +0200)]
watchdog: da9062_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: da9052_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:23 +0000 (23:27 +0200)]
watchdog: da9052_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: cadence_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:22 +0000 (23:27 +0200)]
watchdog: cadence_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: bcm_kona_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:21 +0000 (23:27 +0200)]
watchdog: bcm_kona_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: bcm7038_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:20 +0000 (23:27 +0200)]
watchdog: bcm7038_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: bcm2835_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:19 +0000 (23:27 +0200)]
watchdog: bcm2835_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: aspeed_wdt: drop warning after registering device
Wolfram Sang [Sat, 18 May 2019 21:27:18 +0000 (23:27 +0200)]
watchdog: aspeed_wdt: drop warning after registering device

The core will print out details now.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: let core print error message when registering device fails
Wolfram Sang [Sat, 18 May 2019 21:27:17 +0000 (23:27 +0200)]
watchdog: let core print error message when registering device fails

So we can remove boilerplate code from drivers.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agowatchdog: make watchdog_deferred_registration_add() void
Wolfram Sang [Sat, 18 May 2019 21:27:16 +0000 (23:27 +0200)]
watchdog: make watchdog_deferred_registration_add() void

It cannot fail, so no return value needed.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
5 years agoMerge tag 'for-linus-20190706' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 6 Jul 2019 18:48:39 +0000 (11:48 -0700)]
Merge tag 'for-linus-20190706' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Just a single fix for a patch from Greg KH, which reportedly break
  block debugfs locations for certain setups. Trivial enough that I
  think we should include it now, rather than wait and release 5.2 with
  it, since it's a regression in this series"

* tag 'for-linus-20190706' of git://git.kernel.dk/linux-block:
  blk-mq: fix up placement of debugfs directory of queue files

5 years agoMerge tag 'mips_fixes_5.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Sat, 6 Jul 2019 17:32:12 +0000 (10:32 -0700)]
Merge tag 'mips_fixes_5.2_2' of git://git./linux/kernel/git/mips/linux

Pull MIPS fixes from Paul Burton:
 "A few more MIPS fixes:

   - Fix a silly typo in virt_addr_valid which led to completely bogus
     behavior (that happened to stop tripping up hardened usercopy
     despite being broken).

   - Fix UART parity setup on AR933x systems.

   - A build fix for non-Linux build machines.

   - Have the 'all' make target build DTBs, primarily to fit in with the
     behavior of scripts/package/builddeb.

   - Handle an execution hazard in TLB exceptions that use KScratch
     registers, which could inadvertently clobber the $1 register on
     some generally higher-end out-of-order CPUs.

   - A MAINTAINERS update to fix the path to the NAND driver for Ingenic
     systems"

* tag 'mips_fixes_5.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MAINTAINERS: Correct path to moved files
  MIPS: Add missing EHB in mtc0 -> mfc0 sequence.
  MIPS: have "plain" make calls build dtbs for selected platforms
  MIPS: fix build on non-linux hosts
  MIPS: ath79: fix ar933x uart parity mode
  MIPS: Fix bounds check virt_addr_valid

5 years agoMerge tag 'dmaengine-fix-5.2' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sat, 6 Jul 2019 17:06:37 +0000 (10:06 -0700)]
Merge tag 'dmaengine-fix-5.2' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:

 - bam_dma fix for completed descriptor count

 - fix for imx-sdma remove BD_INTR for channel0 and use-after-free on
   probe error path

 - endian bug fix in jz4780 IRQ handler

* tag 'dmaengine-fix-5.2' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: qcom: bam_dma: Fix completed descriptors count
  dmaengine: imx-sdma: remove BD_INTR for channel0
  dmaengine: imx-sdma: fix use-after-free on probe error path
  dmaengine: jz4780: Fix an endian bug in IRQ handler

5 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 6 Jul 2019 16:56:20 +0000 (09:56 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two iscsi fixes.

  One for an oops in the client which can be triggered by the server
  authentication protocol and the other in the target code which causes
  data corruption"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi: set auth_protocol back to NULL if CHAP_A value is not supported
  scsi: target/iblock: Fix overrun in WRITE SAME emulation

5 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 6 Jul 2019 16:53:08 +0000 (09:53 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/viro/vfs

Pull vfs fixlet from Al Viro:
 "Fix bogus default y in Kconfig (VALIDATE_FS_PARSER)

  That thing should not be turned on by default, especially since it's
  not quiet in case it finds no problems. Geert has sent the obvious fix
  quite a few times, but it fell through the cracks"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs: VALIDATE_FS_PARSER should default to n

5 years agoblk-mq: fix up placement of debugfs directory of queue files
Greg Kroah-Hartman [Sat, 6 Jul 2019 15:50:32 +0000 (17:50 +0200)]
blk-mq: fix up placement of debugfs directory of queue files

When the blk-mq debugfs file creation logic was "cleaned up" it was
cleaned up too much, causing the queue file to not be created in the
correct location.  Turns out the check for the directory being present
is needed as if that has not happened yet, the files should not be
created, and the function will be called later on in the initialization
code so that the files can be created in the correct location.

Fixes: 6cfc0081b046 ("blk-mq: no need to check return value of debugfs_create functions")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: linux-block@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
5 years agoRevert "mm: page cache: store only head pages in i_pages"
Linus Torvalds [Sat, 6 Jul 2019 02:55:18 +0000 (19:55 -0700)]
Revert "mm: page cache: store only head pages in i_pages"

This reverts commit 5fd4ca2d84b249f0858ce28cf637cf25b61a398f.

Mikhail Gavrilov reports that it causes the VM_BUG_ON_PAGE() in
__delete_from_swap_cache() to trigger:

   page:ffffd6d34dff0000 refcount:1 mapcount:1 mapping:ffff97812323a689 index:0xfecec363
   anon
   flags: 0x17fffe00080034(uptodate|lru|active|swapbacked)
   raw: 0017fffe00080034 ffffd6d34c67c508 ffffd6d3504b8d48 ffff97812323a689
   raw: 00000000fecec363 0000000000000000 0000000100000000 ffff978433ace000
   page dumped because: VM_BUG_ON_PAGE(entry != page)
   page->mem_cgroup:ffff978433ace000
   ------------[ cut here ]------------
   kernel BUG at mm/swap_state.c:170!
   invalid opcode: 0000 [#1] SMP NOPTI
   CPU: 1 PID: 221 Comm: kswapd0 Not tainted 5.2.0-0.rc2.git0.1.fc31.x86_64 #1
   Hardware name: System manufacturer System Product Name/ROG STRIX X470-I GAMING, BIOS 2202 04/11/2019
   RIP: 0010:__delete_from_swap_cache+0x20d/0x240
   Code: 30 65 48 33 04 25 28 00 00 00 75 4a 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 c7 c6 2f dc 0f 8a 48 89 c7 e8 93 1b fd ff <0f> 0b 48 c7 c6 a8 74 0f 8a e8 85 1b fd ff 0f 0b 48 c7 c6 a8 7d 0f
   RSP: 0018:ffffa982036e7980 EFLAGS: 00010046
   RAX: 0000000000000021 RBX: 0000000000000040 RCX: 0000000000000006
   RDX: 0000000000000000 RSI: 0000000000000086 RDI: ffff97843d657900
   RBP: 0000000000000001 R08: ffffa982036e7835 R09: 0000000000000535
   R10: ffff97845e21a46c R11: ffffa982036e7835 R12: ffff978426387120
   R13: 0000000000000000 R14: ffffd6d34dff0040 R15: ffffd6d34dff0000
   FS:  0000000000000000(0000) GS:ffff97843d640000(0000) knlGS:0000000000000000
   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
   CR2: 00002cba88ef5000 CR3: 000000078a97c000 CR4: 00000000003406e0
   Call Trace:
    delete_from_swap_cache+0x46/0xa0
    try_to_free_swap+0xbc/0x110
    swap_writepage+0x13/0x70
    pageout.isra.0+0x13c/0x350
    shrink_page_list+0xc14/0xdf0
    shrink_inactive_list+0x1e5/0x3c0
    shrink_node_memcg+0x202/0x760
    shrink_node+0xe0/0x470
    balance_pgdat+0x2d1/0x510
    kswapd+0x220/0x420
    kthread+0xfb/0x130
    ret_from_fork+0x22/0x40

and it's not immediately obvious why it happens.  It's too late in the
rc cycle to do anything but revert for now.

Link: https://lore.kernel.org/lkml/CABXGCsN9mYmBD-4GaaeW_NrDu+FDXLzr_6x+XNxfmFV6QkYCDg@mail.gmail.com/
Reported-and-bisected-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Kirill Shutemov <kirill@shutemov.name>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 6 Jul 2019 02:13:24 +0000 (19:13 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "x86 bugfix patches and one compilation fix for ARM"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: arm64/sve: Fix vq_present() macro to yield a bool
  KVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC
  KVM: nVMX: Change KVM_STATE_NESTED_EVMCS to signal vmcs12 is copied from eVMCS
  KVM: nVMX: Allow restore nested-state to enable eVMCS when vCPU in SMM
  KVM: x86: degrade WARN to pr_warn_ratelimited

5 years agoMerge tag 'mtd/fixes-for-5.2-final' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 6 Jul 2019 02:07:57 +0000 (19:07 -0700)]
Merge tag 'mtd/fixes-for-5.2-final' of git://git./linux/kernel/git/mtd/linux

Pull mtf fixes from Miquel Raynal:

 - Fix the memory organization structure of a Macronix SPI-NAND chip.

 - Fix a build dependency wrongly described.

 - Fix the sunxi NAND driver for A23/A33 SoCs by (a) reverting the
   faulty commit introducing broken DMA support and (b) applying another
   commit bringing working DMA support.

* tag 'mtd/fixes-for-5.2-final' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: rawnand: sunxi: Add A23/A33 DMA support with extra MBUS configuration
  Revert "mtd: rawnand: sunxi: Add A23/A33 DMA support"
  mtd: rawnand: ingenic: Fix ingenic_ecc dependency
  mtd: spinand: Fix max_bad_eraseblocks_per_lun info in memorg

5 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 6 Jul 2019 02:04:57 +0000 (19:04 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixlet from Wolfram Sang:
 "I2C has a MAINTAINERS update which will be benfitial for developers,
  so let's add it right away"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: tegra: Add Dmitry as a reviewer

5 years agoMerge tag 'nfsd-5.2-2' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Sat, 6 Jul 2019 02:00:37 +0000 (19:00 -0700)]
Merge tag 'nfsd-5.2-2' of git://linux-nfs.org/~bfields/linux

Pull nfsd fixes from Bruce Fields:
 "Two more quick bugfixes for nfsd: fixing a regression causing mount
  failures on high-memory machines and fixing the DRC over RDMA"

* tag 'nfsd-5.2-2' of git://linux-nfs.org/~bfields/linux:
  nfsd: Fix overflow causing non-working mounts on 1 TB machines
  svcrdma: Ignore source port when computing DRC hash

5 years agomtd: rawnand: sunxi: Add A23/A33 DMA support with extra MBUS configuration
Miquel Raynal [Mon, 8 Apr 2019 07:41:46 +0000 (09:41 +0200)]
mtd: rawnand: sunxi: Add A23/A33 DMA support with extra MBUS configuration

Allwinner NAND controllers can make use of DMA to enhance the I/O
throughput thanks to ECC pipelining. DMA handling with A23/A33 NAND IP
is a bit different than with the older SoCs, hence the introduction of
a new compatible to handle:
* the differences between register offsets,
* the burst length change from 4 to minimum 8,
* manage SRAM accesses through MBUS with extra configuration.

Fixes: c49836f05aa1 ("mtd: rawnand: sunxi: Add A23/A33 DMA support")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
5 years agoRevert "mtd: rawnand: sunxi: Add A23/A33 DMA support"
Miquel Raynal [Fri, 5 Jul 2019 09:25:29 +0000 (11:25 +0200)]
Revert "mtd: rawnand: sunxi: Add A23/A33 DMA support"

This reverts commit c49836f05aa15282f7280e06ede3f6f8a6324833.

The commit is wrong and its approach actually does not work. Let's
revert it in order to add the feature with a clean patch.

Fixes: c49836f05aa1 ("mtd: rawnand: sunxi: Add A23/A33 DMA support")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
5 years agoi2c: tegra: Add Dmitry as a reviewer
Dmitry Osipenko [Sun, 23 Jun 2019 17:46:55 +0000 (20:46 +0300)]
i2c: tegra: Add Dmitry as a reviewer

I'm contributing to Tegra's upstream development in general and happened
to review the Tegra's I2C patches for awhile because I'm actively using
upstream kernel on all of my Tegra-powered devices and initially some of
the submitted patches were getting my attention since they were causing
problems. Recently Wolfram Sang asked whether I'm interested in becoming
a reviewer for the driver and I don't mind at all.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
[wsa: ack was expressed by Thierry Reding in a mail thread]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
5 years agofs: VALIDATE_FS_PARSER should default to n
Geert Uytterhoeven [Mon, 1 Apr 2019 11:53:57 +0000 (13:53 +0200)]
fs: VALIDATE_FS_PARSER should default to n

CONFIG_VALIDATE_FS_PARSER is a debugging tool to check that the parser
tables are vaguely sane.  It was set to default to 'Y' for the moment to
catch errors in upcoming fs conversion development.

Make sure it is not enabled by default in the final release of v5.1.

Fixes: 31d921c7fb969172 ("vfs: Add configuration parser helpers")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
5 years agoKVM: arm64/sve: Fix vq_present() macro to yield a bool
Zhang Lei [Wed, 3 Jul 2019 17:42:50 +0000 (18:42 +0100)]
KVM: arm64/sve: Fix vq_present() macro to yield a bool

The original implementation of vq_present() relied on aggressive
inlining in order for the compiler to know that the code is
correct, due to some const-casting issues.  This was causing sparse
and clang to complain, while GCC compiled cleanly.

Commit 0c529ff789bc addressed this problem, but since vq_present()
is no longer a function, there is now no implicit casting of the
returned value to the return type (bool).

In set_sve_vls(), this uncast bit value is compared against a bool,
and so may spuriously compare as unequal when both are nonzero.  As
a result, KVM may reject valid SVE vector length configurations as
invalid, and vice versa.

Fix it by forcing the returned value to a bool.

Signed-off-by: Zhang Lei <zhang.lei@jp.fujitsu.com>
Fixes: 0c529ff789bc ("KVM: arm64: Implement vq_present() as a macro")
Signed-off-by: Dave Martin <Dave.Martin@arm.com> [commit message rewrite]
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agodmaengine: qcom: bam_dma: Fix completed descriptors count
Sricharan R [Fri, 28 Jun 2019 12:09:46 +0000 (17:39 +0530)]
dmaengine: qcom: bam_dma: Fix completed descriptors count

One space is left unused in circular FIFO to differentiate
'full' and 'empty' cases. So take that in to account while
counting for the descriptors completed.

Fixes the issue reported here,
https://lkml.org/lkml/2019/6/18/669

Cc: stable@vger.kernel.org
Reported-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
5 years agodmaengine: imx-sdma: remove BD_INTR for channel0
Robin Gong [Fri, 21 Jun 2019 08:23:06 +0000 (16:23 +0800)]
dmaengine: imx-sdma: remove BD_INTR for channel0

It is possible for an irq triggered by channel0 to be received later
after clks are disabled once firmware loaded during sdma probe. If
that happens then clearing them by writing to SDMA_H_INTR won't work
and the kernel will hang processing infinite interrupts. Actually,
don't need interrupt triggered on channel0 since it's pollling
SDMA_H_STATSTOP to know channel0 done rather than interrupt in
current code, just clear BD_INTR to disable channel0 interrupt to
avoid the above case.
This issue was brought by commit 1d069bfa3c78 ("dmaengine: imx-sdma:
ack channel 0 IRQ in the interrupt handler") which didn't take care
the above case.

Fixes: 1d069bfa3c78 ("dmaengine: imx-sdma: ack channel 0 IRQ in the interrupt handler")
Cc: stable@vger.kernel.org #5.0+
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reported-by: Sven Van Asbroeck <thesven73@gmail.com>
Tested-by: Sven Van Asbroeck <thesven73@gmail.com>
Reviewed-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
5 years agodmaengine: imx-sdma: fix use-after-free on probe error path
Sven Van Asbroeck [Mon, 24 Jun 2019 14:07:31 +0000 (10:07 -0400)]
dmaengine: imx-sdma: fix use-after-free on probe error path

If probe() fails anywhere beyond the point where
sdma_get_firmware() is called, then a kernel oops may occur.

Problematic sequence of events:
1. probe() calls sdma_get_firmware(), which schedules the
   firmware callback to run when firmware becomes available,
   using the sdma instance structure as the context
2. probe() encounters an error, which deallocates the
   sdma instance structure
3. firmware becomes available, firmware callback is
   called with deallocated sdma instance structure
4. use after free - kernel oops !

Solution: only attempt to load firmware when we're certain
that probe() will succeed. This guarantees that the firmware
callback's context will remain valid.

Note that the remove() path is unaffected by this issue: the
firmware loader will increment the driver module's use count,
ensuring that the module cannot be unloaded while the
firmware callback is pending or running.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Reviewed-by: Robin Gong <yibin.gong@nxp.com>
[vkoul: fixed braces for if condition]
Signed-off-by: Vinod Koul <vkoul@kernel.org>
5 years agodmaengine: jz4780: Fix an endian bug in IRQ handler
Dan Carpenter [Mon, 24 Jun 2019 13:49:40 +0000 (16:49 +0300)]
dmaengine: jz4780: Fix an endian bug in IRQ handler

The "pending" variable was a u32 but we cast it to an unsigned long
pointer when we do the for_each_set_bit() loop.  The problem is that on
big endian 64bit systems that results in an out of bounds read.

Fixes: 4e4106f5e942 ("dmaengine: jz4780: Fix transfers being ACKed too soon")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
5 years agoMerge tag 'drm-fixes-2019-07-05-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 5 Jul 2019 05:10:30 +0000 (14:10 +0900)]
Merge tag 'drm-fixes-2019-07-05-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "I skipped last week because there wasn't much worth doing, this week
  got a few more fixes in.

  amdgpu:
   - default register value change
   - runpm regression fix
   - fan control fix

  i915:
   - fix Ironlake regression

  panfrost:
   - fix a double free

  virtio:
   - fix a locking bug

  imx:
   - crtc disable fixes"

* tag 'drm-fixes-2019-07-05-1' of git://anongit.freedesktop.org/drm/drm:
  drm/imx: only send event on crtc disable if kept disabled
  drm/imx: notify drm core before sending event during crtc disable
  drm/i915/ringbuffer: EMIT_INVALIDATE *before* switch context
  drm/amdgpu/gfx9: use reset default for PA_SC_FIFO_SIZE
  drm/amdgpu: Don't skip display settings in hwmgr_resume()
  drm/amd/powerplay: use hardware fan control if no powerplay fan table
  drm/panfrost: Fix a double-free error
  drm/etnaviv: add missing failure path to destroy suballoc
  drm/virtio: move drm_connector_update_edid_property() call

5 years agoMerge tag 'imx-drm-fixes-2019-07-04' of git://git.pengutronix.de/git/pza/linux into...
Dave Airlie [Fri, 5 Jul 2019 02:54:48 +0000 (12:54 +1000)]
Merge tag 'imx-drm-fixes-2019-07-04' of git://git.pengutronix.de/git/pza/linux into drm-fixes

drm/imx: fix stale vblank timestamp after a modeset

This series fixes stale vblank timestamps in the first event sent after
a crtc was disabled. The core now is notified via drm_crtc_vblank_off
before sending the last pending event in atomic_disable. If the crtc is
reenabled right away during to a modeset, the event is not sent at all,
as the next vblank will take care of it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1562237119.6641.16.camel@pengutronix.de
5 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 5 Jul 2019 04:31:19 +0000 (13:31 +0900)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes two memory leaks and a list corruption bug"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: user - prevent operating on larval algorithms
  crypto: cryptd - Fix skcipher instance memory leak
  lib/mpi: Fix karactx leak in mpi_powm

5 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 5 Jul 2019 02:39:56 +0000 (11:39 +0900)]
Merge branch 'akpm' (patches from Andrew)

Merge more fixes from Andrew Morton:
 "5 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  swap_readpage(): avoid blk_wake_io_task() if !synchronous
  devres: allow const resource arguments
  mm/vmscan.c: prevent useless kswapd loops
  fs/userfaultfd.c: disable irqs for fault_pending and event locks
  mm/page_alloc.c: fix regression with deferred struct page init

5 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Linus Torvalds [Fri, 5 Jul 2019 02:35:45 +0000 (11:35 +0900)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/soc/soc

Pull ARM SoC fixes from Olof Johansson:
 "Likely our final small batch of fixes for 5.2:

   - Some fixes for USB on davinci, regressions were due to the recent
     conversion of the OCHI driver to use GPIO regulators

   - A fixup of kconfig dependencies for a TI irq controller

   - A switch of armada-38x to avoid dropped characters on uart, caused
     by switch of base inherited platform description earlier this year"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: davinci: da830-evm: fix GPIO lookup for OHCI
  ARM: davinci: omapl138-hawk: add missing regulator constraints for OHCI
  ARM: davinci: da830-evm: add missing regulator constraints for OHCI
  soc: ti: fix irq-ti-sci link error
  ARM: dts: armada-xp-98dx3236: Switch to armada-38x-uart serial node

5 years agoMerge tag 'dax-fix-5.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm...
Linus Torvalds [Fri, 5 Jul 2019 02:32:11 +0000 (11:32 +0900)]
Merge tag 'dax-fix-5.2-rc8' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull dax fix from Dan Williams:
 "A single dax fix that has been soaking awaiting other fixes under
  discussion to join it. As it is getting late in the cycle lets proceed
  with this fix and save follow-on changes for post-v5.3-rc1.

   - Fix xarray entry association for mixed mappings"

* tag 'dax-fix-5.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: Fix xarray entry association for mixed mappings

5 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Fri, 5 Jul 2019 02:21:36 +0000 (11:21 +0900)]
Merge branch 'fixes' of git://git./linux/kernel/git/viro/vfs

Pull do_move_mount() fix from Al Viro:
 "Regression fix"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: move_mount: reject moving kernel internal mounts

5 years agoswap_readpage(): avoid blk_wake_io_task() if !synchronous
Oleg Nesterov [Thu, 4 Jul 2019 22:14:49 +0000 (15:14 -0700)]
swap_readpage(): avoid blk_wake_io_task() if !synchronous

swap_readpage() sets waiter = bio->bi_private even if synchronous = F,
this means that the caller can get the spurious wakeup after return.

This can be fatal if blk_wake_io_task() does
set_current_state(TASK_RUNNING) after the caller does
set_special_state(), in the worst case the kernel can crash in
do_task_dead().

Link: http://lkml.kernel.org/r/20190704160301.GA5956@redhat.com
Fixes: 0619317ff8baa2d ("block: add polled wakeup task helper")
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Qian Cai <cai@lca.pw>
Acked-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agodevres: allow const resource arguments
Arnd Bergmann [Thu, 4 Jul 2019 22:14:45 +0000 (15:14 -0700)]
devres: allow const resource arguments

devm_ioremap_resource() does not currently take 'const' arguments, which
results in a warning from the first driver trying to do it anyway:

  drivers/gpio/gpio-amd-fch.c: In function 'amd_fch_gpio_probe':
  drivers/gpio/gpio-amd-fch.c:171:49: error: passing argument 2 of 'devm_ioremap_resource' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
    priv->base = devm_ioremap_resource(&pdev->dev, &amd_fch_gpio_iores);
                                                   ^~~~~~~~~~~~~~~~~~~

Change the prototype to allow it, as there is no real reason not to.

Link: http://lkml.kernel.org/r/20190628150049.1108048-1-arnd@arndb.de
Fixes: 9bb2e0452508 ("gpio: amd: Make resource struct const")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm/vmscan.c: prevent useless kswapd loops
Shakeel Butt [Thu, 4 Jul 2019 22:14:42 +0000 (15:14 -0700)]
mm/vmscan.c: prevent useless kswapd loops

In production we have noticed hard lockups on large machines running
large jobs due to kswaps hoarding lru lock within isolate_lru_pages when
sc->reclaim_idx is 0 which is a small zone.  The lru was couple hundred
GiBs and the condition (page_zonenum(page) > sc->reclaim_idx) in
isolate_lru_pages() was basically skipping GiBs of pages while holding
the LRU spinlock with interrupt disabled.

On further inspection, it seems like there are two issues:

(1) If kswapd on the return from balance_pgdat() could not sleep (i.e.
    node is still unbalanced), the classzone_idx is unintentionally set
    to 0 and the whole reclaim cycle of kswapd will try to reclaim only
    the lowest and smallest zone while traversing the whole memory.

(2) Fundamentally isolate_lru_pages() is really bad when the
    allocation has woken kswapd for a smaller zone on a very large machine
    running very large jobs.  It can hoard the LRU spinlock while skipping
    over 100s of GiBs of pages.

This patch only fixes (1).  (2) needs a more fundamental solution.  To
fix (1), in the kswapd context, if pgdat->kswapd_classzone_idx is
invalid use the classzone_idx of the previous kswapd loop otherwise use
the one the waker has requested.

Link: http://lkml.kernel.org/r/20190701201847.251028-1-shakeelb@google.com
Fixes: e716f2eb24de ("mm, vmscan: prevent kswapd sleeping prematurely due to mismatched classzone_idx")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Yang Shi <yang.shi@linux.alibaba.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agofs/userfaultfd.c: disable irqs for fault_pending and event locks
Eric Biggers [Thu, 4 Jul 2019 22:14:39 +0000 (15:14 -0700)]
fs/userfaultfd.c: disable irqs for fault_pending and event locks

When IOCB_CMD_POLL is used on a userfaultfd, aio_poll() disables IRQs
and takes kioctx::ctx_lock, then userfaultfd_ctx::fd_wqh.lock.

This may have to wait for userfaultfd_ctx::fd_wqh.lock to be released by
userfaultfd_ctx_read(), which in turn can be waiting for
userfaultfd_ctx::fault_pending_wqh.lock or
userfaultfd_ctx::event_wqh.lock.

But elsewhere the fault_pending_wqh and event_wqh locks are taken with
IRQs enabled.  Since the IRQ handler may take kioctx::ctx_lock, lockdep
reports that a deadlock is possible.

Fix it by always disabling IRQs when taking the fault_pending_wqh and
event_wqh locks.

Commit ae62c16e105a ("userfaultfd: disable irqs when taking the
waitqueue lock") didn't fix this because it only accounted for the
fd_wqh lock, not the other locks nested inside it.

Link: http://lkml.kernel.org/r/20190627075004.21259-1-ebiggers@kernel.org
Fixes: bfe4037e722e ("aio: implement IOCB_CMD_POLL")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reported-by: syzbot+fab6de82892b6b9c6191@syzkaller.appspotmail.com
Reported-by: syzbot+53c0b767f7ca0dc0c451@syzkaller.appspotmail.com
Reported-by: syzbot+a3accb352f9c22041cfa@syzkaller.appspotmail.com
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org> [4.19+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm/page_alloc.c: fix regression with deferred struct page init
Juergen Gross [Thu, 4 Jul 2019 22:14:36 +0000 (15:14 -0700)]
mm/page_alloc.c: fix regression with deferred struct page init

Commit 0e56acae4b4d ("mm: initialize MAX_ORDER_NR_PAGES at a time
instead of doing larger sections") is causing a regression on some
systems when the kernel is booted as Xen dom0.

The system will just hang in early boot.

Reason is an endless loop in get_page_from_freelist() in case the first
zone looked at has no free memory.  deferred_grow_zone() is always
returning true due to the following code snipplet:

  /* If the zone is empty somebody else may have cleared out the zone */
  if (!deferred_init_mem_pfn_range_in_zone(&i, zone, &spfn, &epfn,
                                           first_deferred_pfn)) {
          pgdat->first_deferred_pfn = ULONG_MAX;
          pgdat_resize_unlock(pgdat, &flags);
          return true;
  }

This in turn results in the loop as get_page_from_freelist() is assuming
forward progress can be made by doing some more struct page
initialization.

Link: http://lkml.kernel.org/r/20190620160821.4210-1-jgross@suse.com
Fixes: 0e56acae4b4d ("mm: initialize MAX_ORDER_NR_PAGES at a time instead of doing larger sections")
Signed-off-by: Juergen Gross <jgross@suse.com>
Suggested-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Acked-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge tag 'sound-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Thu, 4 Jul 2019 17:03:50 +0000 (02:03 +0900)]
Merge tag 'sound-5.2' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Here are a collection of small fixes for:

   - A race with ASoC HD-audio registration

   - LINE6 usb-audio memory overwrite by malformed descriptor

   - FireWire MIDI handling

   - Missing cast for bit shifts in a few USB-audio quirks

   - The wrong function calls in minor OSS sequencer code paths

   - A couple of HD-audio quirks"

* tag 'sound-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: line6: Fix write on zero-sized buffer
  ALSA: hda: Fix widget_mutex incomplete protection
  ALSA: firewire-lib/fireworks: fix miss detection of received MIDI messages
  ALSA: seq: fix incorrect order of dest_client/dest_ports arguments
  ALSA: hda/realtek - Change front mic location for Lenovo M710q
  ALSA: usb-audio: fix sign unintended sign extension on left shifts
  ALSA: hda/realtek: Add quirks for several Clevo notebook barebones

5 years agoptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
Jann Horn [Thu, 4 Jul 2019 15:32:23 +0000 (17:32 +0200)]
ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME

Fix two issues:

When called for PTRACE_TRACEME, ptrace_link() would obtain an RCU
reference to the parent's objective credentials, then give that pointer
to get_cred().  However, the object lifetime rules for things like
struct cred do not permit unconditionally turning an RCU reference into
a stable reference.

PTRACE_TRACEME records the parent's credentials as if the parent was
acting as the subject, but that's not the case.  If a malicious
unprivileged child uses PTRACE_TRACEME and the parent is privileged, and
at a later point, the parent process becomes attacker-controlled
(because it drops privileges and calls execve()), the attacker ends up
with control over two processes with a privileged ptrace relationship,
which can be abused to ptrace a suid binary and obtain root privileges.

Fix both of these by always recording the credentials of the process
that is requesting the creation of the ptrace relationship:
current_cred() can't change under us, and current is the proper subject
for access control.

This change is theoretically userspace-visible, but I am not aware of
any code that it will actually break.

Fixes: 64b875f7ac8a ("ptrace: Capture the ptracer's creds not PT_PTRACE_CAP")
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agodrm/imx: only send event on crtc disable if kept disabled
Robert Beckett [Tue, 25 Jun 2019 17:59:15 +0000 (18:59 +0100)]
drm/imx: only send event on crtc disable if kept disabled

The event will be sent as part of the vblank enable during the modeset
if the crtc is not being kept disabled.

Fixes: 5f2f911578fb ("drm/imx: atomic phase 3 step 1: Use atomic configuration")
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
5 years agodrm/imx: notify drm core before sending event during crtc disable
Robert Beckett [Tue, 25 Jun 2019 17:59:13 +0000 (18:59 +0100)]
drm/imx: notify drm core before sending event during crtc disable

Notify drm core before sending pending events during crtc disable.
This fixes the first event after disable having an old stale timestamp
by having drm_crtc_vblank_off update the timestamp to now.

This was seen while debugging weston log message:
Warning: computed repaint delay is insane: -8212 msec

This occurred due to:
1. driver starts up
2. fbcon comes along and restores fbdev, enabling vblank
3. vblank_disable_fn fires via timer disabling vblank, keeping vblank
seq number and time set at current value
(some time later)
4. weston starts and does a modeset
5. atomic commit disables crtc while it does the modeset
6. ipu_crtc_atomic_disable sends vblank with old seq number and time

Fixes: a474478642d5 ("drm/imx: fix crtc vblank state regression")
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
5 years agoMerge tag 'trace-v5.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Thu, 4 Jul 2019 01:26:17 +0000 (10:26 +0900)]
Merge tag 'trace-v5.2-rc5' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This includes three fixes:

   - Fix a deadlock from a previous fix to keep module loading and
     function tracing text modifications from stepping on each other
     (this has a few patches to help document the issue in comments)

   - Fix a crash when the snapshot buffer gets out of sync with the main
     ring buffer

   - Fix a memory leak when reading the memory logs"

* tag 'trace-v5.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()
  tracing/snapshot: Resize spare buffer if size changed
  tracing: Fix memory leak in tracing_err_log_open()
  ftrace/x86: Add a comment to why we take text_mutex in ftrace_arch_code_modify_prepare()
  ftrace/x86: Remove possible deadlock between register_kprobe() and ftrace_run_update_code()

5 years agoMerge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm...
Dave Airlie [Thu, 4 Jul 2019 01:19:23 +0000 (11:19 +1000)]
Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

Fix a kernel nullptr deref on module
unload when any etnaviv GPU failed to initialize properly.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1561974148.2321.1.camel@pengutronix.de
5 years agoMerge tag 'drm-misc-fixes-2019-07-03' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 4 Jul 2019 01:17:44 +0000 (11:17 +1000)]
Merge tag 'drm-misc-fixes-2019-07-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

panfrost- Avoid double free by deleting GEM handle in create_bo failure
          path (Boris)

Cc: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20190704001302.GA260390@art_vandelay
5 years agoMerge tag 'drm-fixes-5.2-2019-07-02' of git://people.freedesktop.org/~agd5f/linux...
Dave Airlie [Thu, 4 Jul 2019 01:17:23 +0000 (11:17 +1000)]
Merge tag 'drm-fixes-5.2-2019-07-02' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

drm-fixes-5.2-2019-07-02:

Fixes for stable

amdgpu:
- stability fix for gfx9
- regression fix for HG on some polaris boards
- crash fix for some new OEM boards

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190703015705.3162-1-alexander.deucher@amd.com
5 years agoMerge tag 'gpio-v5.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
Linus Torvalds [Thu, 4 Jul 2019 00:59:08 +0000 (09:59 +0900)]
Merge tag 'gpio-v5.2-4' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fix from Linus Walleij:
 "A single fixup for the SPI CS gpios that regressed in the current
  kernel cycle"

* tag 'gpio-v5.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio/spi: Fix spi-gpio regression on active high CS

5 years agonfsd: Fix overflow causing non-working mounts on 1 TB machines
Paul Menzel [Wed, 3 Jul 2019 11:28:15 +0000 (13:28 +0200)]
nfsd: Fix overflow causing non-working mounts on 1 TB machines

Since commit 10a68cdf10 (nfsd: fix performance-limiting session
calculation) (Linux 5.1-rc1 and 4.19.31), shares from NFS servers with
1 TB of memory cannot be mounted anymore. The mount just hangs on the
client.

The gist of commit 10a68cdf10 is the change below.

    -avail = clamp_t(int, avail, slotsize, avail/3);
    +avail = clamp_t(int, avail, slotsize, total_avail/3);

Here are the macros.

    #define min_t(type, x, y)       __careful_cmp((type)(x), (type)(y), <)
    #define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)

`total_avail` is 8,434,659,328 on the 1 TB machine. `clamp_t()` casts
the values to `int`, which for 32-bit integers can only hold values
−2,147,483,648 (−2^31) through 2,147,483,647 (2^31 − 1).

`avail` (in the function signature) is just 65536, so that no overflow
was happening. Before the commit the assignment would result in 21845,
and `num = 4`.

When using `total_avail`, it is causing the assignment to be
18446744072226137429 (printed as %lu), and `num` is then 4164608182.

My next guess is, that `nfsd_drc_mem_used` is then exceeded, and the
server thinks there is no memory available any more for this client.

Updating the arguments of `clamp_t()` and `min_t()` to `unsigned long`
fixes the issue.

Now, `avail = 65536` (before commit 10a68cdf10 `avail = 21845`), but
`num = 4` remains the same.

Fixes: c54f24e338ed (nfsd: fix performance-limiting session calculation)
Cc: stable@vger.kernel.org
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
5 years agocrypto: user - prevent operating on larval algorithms
Eric Biggers [Tue, 2 Jul 2019 21:17:00 +0000 (14:17 -0700)]
crypto: user - prevent operating on larval algorithms

Michal Suchanek reported [1] that running the pcrypt_aead01 test from
LTP [2] in a loop and holding Ctrl-C causes a NULL dereference of
alg->cra_users.next in crypto_remove_spawns(), via crypto_del_alg().
The test repeatedly uses CRYPTO_MSG_NEWALG and CRYPTO_MSG_DELALG.

The crash occurs when the instance that CRYPTO_MSG_DELALG is trying to
unregister isn't a real registered algorithm, but rather is a "test
larval", which is a special "algorithm" added to the algorithms list
while the real algorithm is still being tested.  Larvals don't have
initialized cra_users, so that causes the crash.  Normally pcrypt_aead01
doesn't trigger this because CRYPTO_MSG_NEWALG waits for the algorithm
to be tested; however, CRYPTO_MSG_NEWALG returns early when interrupted.

Everything else in the "crypto user configuration" API has this same bug
too, i.e. it inappropriately allows operating on larval algorithms
(though it doesn't look like the other cases can cause a crash).

Fix this by making crypto_alg_match() exclude larval algorithms.

[1] https://lkml.kernel.org/r/20190625071624.27039-1-msuchanek@suse.de
[2] https://github.com/linux-test-project/ltp/blob/20190517/testcases/kernel/crypto/pcrypt_aead01.c

Reported-by: Michal Suchanek <msuchanek@suse.de>
Fixes: a38f7907b926 ("crypto: Add userspace configuration API")
Cc: <stable@vger.kernel.org> # v3.2+
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
5 years agocrypto: cryptd - Fix skcipher instance memory leak
Vincent Whitchurch [Tue, 2 Jul 2019 07:53:25 +0000 (09:53 +0200)]
crypto: cryptd - Fix skcipher instance memory leak

cryptd_skcipher_free() fails to free the struct skcipher_instance
allocated in cryptd_create_skcipher(), leading to a memory leak.  This
is detected by kmemleak on bootup on ARM64 platforms:

 unreferenced object 0xffff80003377b180 (size 1024):
   comm "cryptomgr_probe", pid 822, jiffies 4294894830 (age 52.760s)
   backtrace:
     kmem_cache_alloc_trace+0x270/0x2d0
     cryptd_create+0x990/0x124c
     cryptomgr_probe+0x5c/0x1e8
     kthread+0x258/0x318
     ret_from_fork+0x10/0x1c

Fixes: 4e0958d19bd8 ("crypto: cryptd - Add support for skcipher")
Cc: <stable@vger.kernel.org>
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
5 years agolib/mpi: Fix karactx leak in mpi_powm
Herbert Xu [Mon, 24 Jun 2019 10:32:26 +0000 (18:32 +0800)]
lib/mpi: Fix karactx leak in mpi_powm

Sometimes mpi_powm will leak karactx because a memory allocation
failure causes a bail-out that skips the freeing of karactx.  This
patch moves the freeing of karactx to the end of the function like
everything else so that it can't be skipped.

Reported-by: syzbot+f7baccc38dcc1e094e77@syzkaller.appspotmail.com
Fixes: cdec9cb5167a ("crypto: GnuPG based MPI lib - source files...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
5 years agoBluetooth: Fix faulty expression for minimum encryption key size check
Matias Karhumaa [Tue, 2 Jul 2019 14:35:09 +0000 (16:35 +0200)]
Bluetooth: Fix faulty expression for minimum encryption key size check

Fix minimum encryption key size check so that HCI_MIN_ENC_KEY_SIZE is
also allowed as stated in the comment.

This bug caused connection problems with devices having maximum
encryption key size of 7 octets (56-bit).

Fixes: 693cd8ce3f88 ("Bluetooth: Fix regression with minimum encryption key size alignment")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203997
Signed-off-by: Matias Karhumaa <matias.karhumaa@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge tag '5.2-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Wed, 3 Jul 2019 08:06:36 +0000 (16:06 +0800)]
Merge tag '5.2-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fix from Steve French:
 "SMB3 fix (for stable as well) for crash mishandling one of the Windows
  reparse point symlink tags"

* tag '5.2-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix crash querying symlinks stored as reparse-points

5 years agoMerge tag 'for-linus-20190701' of git://git.kernel.org/pub/scm/linux/kernel/git/braun...
Linus Torvalds [Wed, 3 Jul 2019 08:00:21 +0000 (16:00 +0800)]
Merge tag 'for-linus-20190701' of git://git./linux/kernel/git/brauner/linux

Pull pidfd fork() fix from Christian Brauner:
 "A single small fix for copy_process() in kernel/fork.c:

  With Al's removal of ksys_close() from cleanup paths in copy_process()
  a bug was introduced. When anon_inode_getfile() failed the cleanup was
  correctly performed but the error code was not propagated to callers
  of copy_process() causing them to operate on a nonsensical pointer.

  The fix is a simple on-liner which makes sure that a proper negative
  error code is returned from copy_process().

  syzkaller has also verified that the bug is not reproducible with this
  fix"

* tag 'for-linus-20190701' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  fork: return proper negative error code

5 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Wed, 3 Jul 2019 07:57:30 +0000 (15:57 +0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Fix a build failure with the LLVM linker and a module allocation
  failure when KASLR is active:

   - Fix module allocation when running with KASLR enabled

   - Fix broken build due to bug in LLVM linker (ld.lld)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/efi: Mark __efistub_stext_offset as an absolute symbol explicitly
  arm64: kaslr: keep modules inside module region when KASAN is enabled

5 years agoMerge tag 'davinci-fixes-for-v5.2-part2' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Tue, 2 Jul 2019 22:13:20 +0000 (15:13 -0700)]
Merge tag 'davinci-fixes-for-v5.2-part2' of git://git./linux/kernel/git/nsekhar/linux-davinci into arm/fixes

This set of patches fixes regressions introduced in v5.2 kernel when DA8xx
OHCI driver was converted over to use GPIO regulators.

* tag 'davinci-fixes-for-v5.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: da830-evm: fix GPIO lookup for OHCI
  ARM: davinci: omapl138-hawk: add missing regulator constraints for OHCI
  ARM: davinci: da830-evm: add missing regulator constraints for OHCI
  + Linux 5.2-rc7

Signed-off-by: Olof Johansson <olof@lixom.net>
5 years agoscsi: iscsi: set auth_protocol back to NULL if CHAP_A value is not supported
Maurizio Lombardi [Wed, 26 Jun 2019 17:27:34 +0000 (19:27 +0200)]
scsi: iscsi: set auth_protocol back to NULL if CHAP_A value is not supported

If the CHAP_A value is not supported, the chap_server_open() function
should free the auth_protocol pointer and set it to NULL, or we will leave
a dangling pointer around.

[   66.010905] Unsupported CHAP_A value
[   66.011660] Security negotiation failed.
[   66.012443] iSCSI Login negotiation failed.
[   68.413924] general protection fault: 0000 [#1] SMP PTI
[   68.414962] CPU: 0 PID: 1562 Comm: targetcli Kdump: loaded Not tainted 4.18.0-80.el8.x86_64 #1
[   68.416589] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[   68.417677] RIP: 0010:__kmalloc_track_caller+0xc2/0x210

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: target/iblock: Fix overrun in WRITE SAME emulation
Roman Bolshakov [Tue, 2 Jul 2019 19:16:38 +0000 (22:16 +0300)]
scsi: target/iblock: Fix overrun in WRITE SAME emulation

WRITE SAME corrupts data on the block device behind iblock if the command
is emulated. The emulation code issues (M - 1) * N times more bios than
requested, where M is the number of 512 blocks per real block size and N is
the NUMBER OF LOGICAL BLOCKS specified in WRITE SAME command. So, for a
device with 4k blocks, 7 * N more LBAs gets written after the requested
range.

The issue happens because the number of 512 byte sectors to be written is
decreased one by one while the real bios are typically from 1 to 8 512 byte
sectors per bio.

Fixes: c66ac9db8d4a ("[SCSI] target: Add LIO target core v4.0.0-rc6")
Cc: <stable@vger.kernel.org>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agogpio/spi: Fix spi-gpio regression on active high CS
Linus Walleij [Tue, 2 Jul 2019 19:39:59 +0000 (21:39 +0200)]
gpio/spi: Fix spi-gpio regression on active high CS

I ran into an intriguing bug caused by
commit ""spi: gpio: Don't request CS GPIO in DT use-case"
affecting all SPI GPIO devices with an active high
chip select line.

The commit switches the CS gpio handling over to the GPIO
core, which will parse and handle "cs-gpios" from the OF
node without even calling down to the driver to get the
job done.

However the GPIO core handles the standard bindings in
Documentation/devicetree/bindings/spi/spi-controller.yaml
that specifies that active high CS needs to be specified
using "spi-cs-high" in the DT node.

The code in drivers/spi/spi-gpio.c never respected this
and never tried to inspect subnodes to see if they contained
"spi-cs-high" like the gpiolib OF quirks does. Instead the
only way to get an active high CS was to tag it in the
device tree using the flags cell such as
cs-gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;

This alters the quirks to not inspect the subnodes of SPI
masters on "spi-gpio" for the standard attribute "spi-cs-high",
making old device trees work as expected.

This semantic is a bit ambigous, but just allowing the
flags on the GPIO descriptor to modify polarity is what
the kernel at large mostly uses so let's encourage that.

Fixes: 249e2632dcd0 ("spi: gpio: Don't request CS GPIO in DT use-case")
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-spi@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
5 years agoftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process...
Jiri Kosina [Sat, 29 Jun 2019 21:22:33 +0000 (23:22 +0200)]
ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()

ftrace_arch_code_modify_prepare() is acquiring text_mutex, while the
corresponding release is happening in ftrace_arch_code_modify_post_process().

This has already been documented in the code, but let's also make the fact
that this is intentional clear to the semantic analysis tools such as sparse.

Link: http://lkml.kernel.org/r/nycvar.YFH.7.76.1906292321170.27227@cbobk.fhfr.pm
Fixes: 39611265edc1a ("ftrace/x86: Add a comment to why we take text_mutex in ftrace_arch_code_modify_prepare()")
Fixes: d5b844a2cf507 ("ftrace/x86: Remove possible deadlock between register_kprobe() and ftrace_run_update_code()")
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
5 years agoALSA: line6: Fix write on zero-sized buffer
Takashi Iwai [Tue, 2 Jul 2019 18:07:21 +0000 (20:07 +0200)]
ALSA: line6: Fix write on zero-sized buffer

LINE6 drivers allocate the buffers based on the value returned from
usb_maxpacket() calls.  The manipulated device may return zero for
this, and this results in the kmalloc() with zero size (and it may
succeed) while the other part of the driver code writes the packet
data with the fixed size -- which eventually overwrites.

This patch adds a simple sanity check for the invalid buffer size for
avoiding that problem.

Reported-by: syzbot+219f00fb49874dcaea17@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
5 years agoKVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC
Wanpeng Li [Tue, 2 Jul 2019 09:25:02 +0000 (17:25 +0800)]
KVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC

Thomas reported that:

 | Background:
 |
 |    In preparation of supporting IPI shorthands I changed the CPU offline
 |    code to software disable the local APIC instead of just masking it.
 |    That's done by clearing the APIC_SPIV_APIC_ENABLED bit in the APIC_SPIV
 |    register.
 |
 | Failure:
 |
 |    When the CPU comes back online the startup code triggers occasionally
 |    the warning in apic_pending_intr_clear(). That complains that the IRRs
 |    are not empty.
 |
 |    The offending vector is the local APIC timer vector who's IRR bit is set
 |    and stays set.
 |
 | It took me quite some time to reproduce the issue locally, but now I can
 | see what happens.
 |
 | It requires apicv_enabled=0, i.e. full apic emulation. With apicv_enabled=1
 | (and hardware support) it behaves correctly.
 |
 | Here is the series of events:
 |
 |     Guest CPU
 |
 |     goes down
 |
 |       native_cpu_disable()
 |
 |  apic_soft_disable();
 |
 |     play_dead()
 |
 |     ....
 |
 |     startup()
 |
 |       if (apic_enabled())
 |         apic_pending_intr_clear() <- Not taken
 |
 |      enable APIC
 |
 |         apic_pending_intr_clear() <- Triggers warning because IRR is stale
 |
 | When this happens then the deadline timer or the regular APIC timer -
 | happens with both, has fired shortly before the APIC is disabled, but the
 | interrupt was not serviced because the guest CPU was in an interrupt
 | disabled region at that point.
 |
 | The state of the timer vector ISR/IRR bits:
 |
 |                            ISR     IRR
 | before apic_soft_disable()    0       1
 | after apic_soft_disable()     0       1
 |
 | On startup         0       1
 |
 | Now one would assume that the IRR is cleared after the INIT reset, but this
 | happens only on CPU0.
 |
 | Why?
 |
 | Because our CPU0 hotplug is just for testing to make sure nothing breaks
 | and goes through an NMI wakeup vehicle because INIT would send it through
 | the boots-trap code which is not really working if that CPU was not
 | physically unplugged.
 |
 | Now looking at a real world APIC the situation in that case is:
 |
 |                           ISR     IRR
 | before apic_soft_disable()    0       1
 | after apic_soft_disable()     0       1
 |
 | On startup         0       0
 |
 | Why?
 |
 | Once the dying CPU reenables interrupts the pending interrupt gets
 | delivered as a spurious interupt and then the state is clear.
 |
 | While that CPU0 hotplug test case is surely an esoteric issue, the APIC
 | emulation is still wrong, Even if the play_dead() code would not enable
 | interrupts then the pending IRR bit would turn into an ISR .. interrupt
 | when the APIC is reenabled on startup.

From SDM 10.4.7.2 Local APIC State After It Has Been Software Disabled
* Pending interrupts in the IRR and ISR registers are held and require
  masking or handling by the CPU.

In Thomas's testing, hardware cpu will not respect soft disable LAPIC
when IRR has already been set or APICv posted-interrupt is in flight,
so we can skip soft disable APIC checking when clearing IRR and set ISR,
continue to respect soft disable APIC when attempting to set IRR.

Reported-by: Rong Chen <rong.a.chen@intel.com>
Reported-by: Feng Tang <feng.tang@intel.com>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rong Chen <rong.a.chen@intel.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: Change KVM_STATE_NESTED_EVMCS to signal vmcs12 is copied from eVMCS
Liran Alon [Wed, 26 Jun 2019 13:09:27 +0000 (16:09 +0300)]
KVM: nVMX: Change KVM_STATE_NESTED_EVMCS to signal vmcs12 is copied from eVMCS

Currently KVM_STATE_NESTED_EVMCS is used to signal that eVMCS
capability is enabled on vCPU.
As indicated by vmx->nested.enlightened_vmcs_enabled.

This is quite bizarre as userspace VMM should make sure to expose
same vCPU with same CPUID values in both source and destination.
In case vCPU is exposed with eVMCS support on CPUID, it is also
expected to enable KVM_CAP_HYPERV_ENLIGHTENED_VMCS capability.
Therefore, KVM_STATE_NESTED_EVMCS is redundant.

KVM_STATE_NESTED_EVMCS is currently used on restore path
(vmx_set_nested_state()) only to enable eVMCS capability in KVM
and to signal need_vmcs12_sync such that on next VMEntry to guest
nested_sync_from_vmcs12() will be called to sync vmcs12 content
into eVMCS in guest memory.
However, because restore nested-state is rare enough, we could
have just modified vmx_set_nested_state() to always signal
need_vmcs12_sync.

From all the above, it seems that we could have just removed
the usage of KVM_STATE_NESTED_EVMCS. However, in order to preserve
backwards migration compatibility, we cannot do that.
(vmx_get_nested_state() needs to signal flag when migrating from
new kernel to old kernel).

Returning KVM_STATE_NESTED_EVMCS when just vCPU have eVMCS enabled
have a bad side-effect of userspace VMM having to send nested-state
from source to destination as part of migration stream. Even if
guest have never used eVMCS as it doesn't even run a nested
hypervisor workload. This requires destination userspace VMM and
KVM to support setting nested-state. Which make it more difficult
to migrate from new host to older host.
To avoid this, change KVM_STATE_NESTED_EVMCS to signal eVMCS is
not only enabled but also active. i.e. Guest have made some
eVMCS active via an enlightened VMEntry. i.e. vmcs12 is copied
from eVMCS and therefore should be restored into eVMCS resident
in memory (by copy_vmcs12_to_enlightened()).

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Maran Wilson <maran.wilson@oracle.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: Allow restore nested-state to enable eVMCS when vCPU in SMM
Liran Alon [Tue, 25 Jun 2019 11:26:42 +0000 (14:26 +0300)]
KVM: nVMX: Allow restore nested-state to enable eVMCS when vCPU in SMM

As comment in code specifies, SMM temporarily disables VMX so we cannot
be in guest mode, nor can VMLAUNCH/VMRESUME be pending.

However, code currently assumes that these are the only flags that can be
set on kvm_state->flags. This is not true as KVM_STATE_NESTED_EVMCS
can also be set on this field to signal that eVMCS should be enabled.

Therefore, fix code to check for guest-mode and pending VMLAUNCH/VMRESUME
explicitly.

Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>