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2017-05-14PM / hibernate: Declare variables as staticPushkar Jambhlekar
Fixing sparse warnings: 'symbol not declared. Should it be static?' Signed-off-by: Pushkar Jambhlekar <pushkar.iit@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-05-14PowerCap: Fix an error code in powercap_register_zone()Dan Carpenter
In the current code we accidentally return the successful result from idr_alloc() instead of a negative error pointer. The caller is looking for an error pointer and so it treats the returned value as a valid pointer. This one might be a bit serious because if it lets people get around the kernel's protection for remapping NULL. I'm not sure. Fixes: 75d2364ea0ca (PowerCap: Add class driver) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-05-14net/mlx5: Use underlay QPN from the root name spaceYishai Hadas
Root flow table is dynamically changed by the underlying flow steering layer, and IPoIB/ULPs have no idea what will be the root flow table in the future, hence we need a dynamic infrastructure to move Underlay QPs with the root flow table. Fixes: b3ba51498bdd ("net/mlx5: Refactor create flow table method to accept underlay QP") Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-05-14net/mlx5e: IPoIB, Only support regular RQ for nowSaeed Mahameed
IPoIB doesn't support striding RQ at the moment, for this we need to explicitly choose non striding RQ in IPoIB init, even if the HW supports it. Fixes: 8f493ffd88ea ("net/mlx5e: IPoIB, RX steering RSS RQTs and TIRs") Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-05-14net/mlx5e: Fix setup TC ndoSaeed Mahameed
Fail-safe support patches introduced a trivial bug, setup tc callback is doing a wrong check of the netdevice state, the fix is simply to invert the condition. Fixes: 6f9485af4020 ("net/mlx5e: Fail safe tc setup") Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-05-14net/mlx5e: Fix ethtool pause support and advertise reportingGal Pressman
Pause bit should set when RX pause is on, not TX pause. Also, setting Asym_Pause is incorrect, and should be turned off. Fixes: 665bc53969d7 ("net/mlx5e: Use new ethtool get/set link ksettings API") Signed-off-by: Gal Pressman <galp@mellanox.com> Cc: kernel-team@fb.com Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-05-14net/mlx5e: Use the correct pause values for ethtool advertisingGal Pressman
Query the operational pause from firmware (PFCC register) instead of always passing zeros. Fixes: 665bc53969d7 ("net/mlx5e: Use new ethtool get/set link ksettings API") Signed-off-by: Gal Pressman <galp@mellanox.com> Cc: kernel-team@fb.com Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-05-14ASoC: rt5665: add ADC STO2 ASRC supportBard Liao
"ADC Stereo2 Filter" is with ASRC supported. Signed-off-by: Bard Liao <bardliao@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: rt5514: Add more width and channels support in the TDM modeOder Chiou
This patch adds more width and channels support in the TDM mode. Signed-off-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: nau8824: TDM supportJohn Hsu
Support TDM format for NAU88L24. Signed-off-by: John Hsu <KCHSU0@nuvoton.com> Signed-off-by: John Hsu <supercraig0719@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: Intel: sst: fix spelling mistake: "allocationf" -> "allocation"Colin Ian King
Trivial fix to spelling mistake in dev_err message. Also replace "fail" with "failure". Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: tlv320dac31xx: Fix mistype in tlv320dac31xx codecTomas Vilda
Signed-off-by: Tomas Vilda <tomas.vilda@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: intel: atom: localize variable without external linkageTakashi Sakamoto
A driver for Intel SST driver for old atom platform includes a variable which has no external linkage. These functions should have static qualifier. This commit adds the qualifier to localize the variable. This issue is detected by sparse: sst.c:261:1: warning: symbol 'dev_attr_firmware_version' was not declared. Should it be static? Cc: Sebastien Guiriec <sebastien.guiriec@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: hisilicon: localize functions without external linkageTakashi Sakamoto
A driver for hi6210 sound interface on hi6220 boards includes some functions which has no external linkage. These functions should have static qualifier. This commit adds the qualifier to localize the functions. This issue is detected by sparse: hi6210-i2s.c:100:5: warning: symbol 'hi6210_i2s_startup' was not declared. Should it be static? hi6210-i2s.c:178:6: warning: symbol 'hi6210_i2s_shutdown' was not declared. Should it be static? hi6210-i2s.c:527:27: warning: symbol 'hi6210_i2s_dai_init' was not declared. Should it be static? Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: codecs: msm8916: fix invalid cast to bool typeTakashi Sakamoto
A function snd_soc_update_bits() is an application of regmap_update_bits_base(). This function takes some arguments for bitmask and new value, thus the arguments should be a type which has width. However bool is used to variable for the argument. This brings truncation and results in invalid operation. This commit fixes this bug by using unsigned int type, instead of bool. This bug is detected by sparse: smsm8916-wcd-analog.c:809:43: warning: odd constant _Bool cast (40 becomes 1) smsm8916-wcd-analog.c:814:43: warning: odd constant _Bool cast (40 becomes 1) Fixes: 585e881e5b9e ("ASoC: codecs: Add msm8916-wcd analog codec") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: da7213: Fix incorrect usage of bitwise '&' operator for SRM checkAdam Thomson
In the SRM lock check section of code the '&' bitwise operator is used as part of checking lock status. Functionally the code works as intended, but the conditional statement is a boolean comparison so should really use '&&' logical operator instead. This commit rectifies this discrepancy. Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14rt286: add Thinkpad Helix 2 to force_combo_jack_tableYifeng Li
Thinkpad Helix 2 is a tablet PC, the audio is powered by Core M broadwell-audio and rt286 codec. For all versions of Linux kernel, the stereo output doesn't work properly when earphones are plugged in, the sound was coming out from both channels even if the audio contains only the left or right channel. Furthermore, if a music recorded in stereo is played, the two channels cancle out each other out, as a result, no voice but only distorted background music can be heard, like a sound card with builtin a Karaoke sount effect. Apparently this tablet uses a combo jack with polarity incorrectly set by rt286 driver. This patch adds DMI information of Thinkpad Helix 2 to force_combo_jack_table[] and the issue is resolved. The microphone input doesn't work regardless to the presence of this patch and still needs help from other developers to investigate. This is my first patch to LKML directly, sorry for CC-ing too many people here. Link: https://bugzilla.kernel.org/show_bug.cgi?id=93841 Signed-off-by: Yifeng Li <tomli@tomli.me> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: Intel: Skylake: Fix typo for token d0i3 capsSubhransu S. Prusty
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: Intel: Skylake: Move i915 registration to worker threadVinod Koul
The i915 component framework expects the caller to be invoking snd_hdac_i915_init() from a thread context. Otherwise it results in lockups on drm side. So move the registering of component interface and probing of codecs on this bus to a worker thread. init_failed in skl structure is not used currently, so renamed to init_done and used to track the initialization done in worker thread. Reported-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Sodhi, VunnyX <vunnyx.sodhi@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: ak4613: disable asymmetric audio interface formatKuninori Morimoto
Asymmetric audio interface formats exist in ak4613 by same register settings. Capture Playback 24bit LEFT_J 16bit RIGHT_J 24bit LEFT_J 20bit RIGHT_J 24bit LEFT_J 24bit RIGHT_J 24bit LEFT_J 24bit LEFT_J 24bit I2S 24bit I2S These asymmetric formats makes driver / behavior difficult. It is not HW limitation, but SW limitation. To makes code reading easy, this patch removes asymmetric format support. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: rt5665: fix gcc-7 warningArnd Bergmann
gcc-7 warns that there is a duplicate 'const' specifier in some variables that are declared using the SOC_ENUM_SINGLE_DECL macro: sound/soc/codecs/rt5665.c:915:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL(rt5665_if1_1_01_adc_enum, sound/soc/codecs/rt5665.c:918:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL(rt5665_if1_1_23_adc_enum, sound/soc/codecs/rt5665.c:921:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL(rt5665_if1_1_45_adc_enum, sound/soc/codecs/rt5665.c:924:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL(rt5665_if1_1_67_adc_enum, ... This removes one to fix the 68 warnings in this file Fixes: 33ada14a26c8 ("ASoC: add rt5665 codec driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: rt5514: fix gcc-7 warningArnd Bergmann
gcc-7 warns that there is a duplicate 'const' specifier in some variables that are declared using the SOC_ENUM_SINGLE_DECL macro: sound/soc/codecs/rt5514.c:398:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL( sound/soc/codecs/rt5514.c:405:14: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const SOC_ENUM_SINGLE_DECL( This removes one to fix the warning. Fixes: 4a6180ea7399 ("ASoC: rt5514: add rt5514 codec driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ASoC: davinci-mcasp: Support for one channel (mono) audioPeter Ujfalusi
Mono audio can be achieved by configuring McASP to transmit/receive only during one timeslot. McASP will still going to generate clocks for the other slot(s), but will only use the single slot to transmit/receive. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14ARM: sunxi: h3/h5: fix the compatible of R_CCUIcenowy Zheng
The R_CCU of H3/H5 currently wrongly used A64 R_CCU compatible. Fix it by changing it to the correct H3 compatible. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-05-14clk: sunxi-ng: v3s: Fix usb otg device reset bitYong Deng
V3S's usb otg device reset bit should be 24, not 23. Cc: stable@vger.kernel.org Signed-off-by: Yong Deng <iemdey@gmail.com> Reviewed-By: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-05-14clk: sunxi-ng: a31: Correct lcd1-ch1 clock register offsetChen-Yu Tsai
The register offset for the lcd1-ch1 clock was incorrectly pointing to the lcd0-ch1 clock. This resulted in the lcd0-ch1 clock being disabled when the clk core disables unused clocks. This then stops the simplefb HDMI output path. Reported-by: Bob Ham <rah@settrans.net> Fixes: c6e6c96d8fa6 ("clk: sunxi-ng: Add A31/A31s clocks") Cc: stable@vger.kernel.org # 4.9.x- Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-05-13soc: bcm: brcmstb: Correctly match 7435 SoCFlorian Fainelli
Remove the duplicate brcm,bcm7425-sun-top-ctrl compatible string and replace it with brcm,bcm7435-sun-top-ctrl which was intended. Fixes: bd0faf08dc7f ("soc: bcm: brcmstb: Match additional compatible strings") Reported-by: Andreas Oberritter <obi@saftware.de> Acked-by: Gregory Fong <gregory.0xf0@gmail.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-05-13Merge tag 'bcm2835-dt-next-2017-03-30' into devicetree/fixesFlorian Fainelli
This pull request brings back bcm2835 DT fixups from Baruch Siach that got misplaced after a PR for 4.11 got rejected. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-05-13dax, xfs, ext4: compile out iomap-dax paths in the FS_DAX=n caseDan Williams
Tetsuo reports: fs/built-in.o: In function `xfs_file_iomap_end': xfs_iomap.c:(.text+0xe0ef9): undefined reference to `put_dax' fs/built-in.o: In function `xfs_file_iomap_begin': xfs_iomap.c:(.text+0xe1a7f): undefined reference to `dax_get_by_host' make: *** [vmlinux] Error 1 $ grep DAX .config CONFIG_DAX=m # CONFIG_DEV_DAX is not set # CONFIG_FS_DAX is not set When FS_DAX=n we can/must throw away the dax code in filesystems. Implement 'fs_' versions of dax_get_by_host() and put_dax() that are nops in the FS_DAX=n case. Cc: <linux-xfs@vger.kernel.org> Cc: <linux-ext4@vger.kernel.org> Cc: Jan Kara <jack@suse.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: "Darrick J. Wong" <darrick.wong@oracle.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Tested-by: Tony Luck <tony.luck@intel.com> Fixes: ef51042472f5 ("block, dax: move 'select DAX' from BLOCK to FS_DAX") Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2017-05-14RTC: rtc-cmos: Fix wakeup from suspend-to-idleRafael J. Wysocki
Commit eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle) modified the core suspend-to-idle code to filter out spurious SCI interrupts received while suspended, which requires ACPI event source handlers to report wakeup events in a way that will trigger a wakeup from suspend to idle (or abort system suspends in progress, which is equivalent). That needs to be done in the rtc-cmos driver too, which was overlooked by the above commit, so do that now. Fixes: eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle) Reported-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-05-14PM / wakeup: Fix up wakeup_source_report_event()Rafael J. Wysocki
Commit 8a537ece3d94 (PM / wakeup: Integrate mechanism to abort transitions in progress) modified wakeup_source_report_event() and wakeup_source_activate() to make it possible to call pm_system_wakeup() from the latter if so indicated by the caller of the former (via a new function argument added by that commit), but it overlooked the fact that in some situations wakeup_source_report_event() is called to signal a "hard" event (ie. such that should abort a system suspend in progress) after pm_stay_awake() has been called for the same wakeup source object, in which case the pm_system_wakeup() will not trigger. To work around this issue, modify wakeup_source_activate() and wakeup_source_report_event() again so that pm_system_wakeup() is called by the latter directly (if its last argument is true), in which case the additional argument does not need to be passed to wakeup_source_activate() any more, so drop it from there. Fixes: 8a537ece3d94 (PM / wakeup: Integrate mechanism to abort transitions in progress) Reported-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-05-14cpufreq: intel_pstate: Document the current behavior and user interfaceRafael J. Wysocki
Add a document describing the current behavior and user space interface of the intel_pstate driver in the RST format and drop the existing outdated intel_pstate.txt document. Also update admin-guide/pm/cpufreq.rst with proper RST references to the new intel_pstate.rst document. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-05-13dax: fix false CONFIG_BLOCK dependencyDan Williams
In the BLOCK=n case the dax core does not need to / must not emit the block-device-dax helpers. Otherwise it leads to compile errors. Cc: Arnd Bergmann <arnd@arndb.de> Reported-by: Fabian Frederick <fabf@skynet.be> Fixes: ef51042472f5 ("block, dax: move 'select DAX' from BLOCK to FS_DAX") Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2017-05-13pid_ns: Fix race between setns'ed fork() and zap_pid_ns_processes()Kirill Tkhai
Imagine we have a pid namespace and a task from its parent's pid_ns, which made setns() to the pid namespace. The task is doing fork(), while the pid namespace's child reaper is dying. We have the race between them: Task from parent pid_ns Child reaper copy_process() .. alloc_pid() .. .. zap_pid_ns_processes() .. disable_pid_allocation() .. read_lock(&tasklist_lock) .. iterate over pids in pid_ns .. kill tasks linked to pids .. read_unlock(&tasklist_lock) write_lock_irq(&tasklist_lock); .. attach_pid(p, PIDTYPE_PID); .. .. .. So, just created task p won't receive SIGKILL signal, and the pid namespace will be in contradictory state. Only manual kill will help there, but does the userspace care about this? I suppose, the most users just inject a task into a pid namespace and wait a SIGCHLD from it. The patch fixes the problem. It simply checks for (pid_ns->nr_hashed & PIDNS_HASH_ADDING) in copy_process(). We do it under the tasklist_lock, and can't skip PIDNS_HASH_ADDING as noted by Oleg: "zap_pid_ns_processes() does disable_pid_allocation() and then takes tasklist_lock to kill the whole namespace. Given that copy_process() checks PIDNS_HASH_ADDING under write_lock(tasklist) they can't race; if copy_process() takes this lock first, the new child will be killed, otherwise copy_process() can't miss the change in ->nr_hashed." If allocation is disabled, we just return -ENOMEM like it's made for such cases in alloc_pid(). v2: Do not move disable_pid_allocation(), do not introduce a new variable in copy_process() and simplify the patch as suggested by Oleg Nesterov. Account the problem with double irq enabling found by Eric W. Biederman. Fixes: c876ad768215 ("pidns: Stop pid allocation when init dies") Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: Ingo Molnar <mingo@kernel.org> CC: Peter Zijlstra <peterz@infradead.org> CC: Oleg Nesterov <oleg@redhat.com> CC: Mike Rapoport <rppt@linux.vnet.ibm.com> CC: Michal Hocko <mhocko@suse.com> CC: Andy Lutomirski <luto@kernel.org> CC: "Eric W. Biederman" <ebiederm@xmission.com> CC: Andrei Vagin <avagin@openvz.org> CC: Cyrill Gorcunov <gorcunov@openvz.org> CC: Serge Hallyn <serge@hallyn.com> Cc: stable@vger.kernel.org Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2017-05-13pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processesEric W. Biederman
The code can potentially sleep for an indefinite amount of time in zap_pid_ns_processes triggering the hung task timeout, and increasing the system average. This is undesirable. Sleep with a task state of TASK_INTERRUPTIBLE instead of TASK_UNINTERRUPTIBLE to remove these undesirable side effects. Apparently under heavy load this has been allowing Chrome to trigger the hung time task timeout error and cause ChromeOS to reboot. Reported-by: Vovo Yang <vovoy@google.com> Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Fixes: 6347e9009104 ("pidns: guarantee that the pidns init will be the last pidns process reaped") Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2017-05-13Linux 4.12-rc1v4.12-rc1Linus Torvalds
2017-05-13Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull some more input subsystem updates from Dmitry Torokhov: "An updated xpad driver with a few more recognized device IDs, and a new psxpad-spi driver, allowing connecting Playstation 1 and 2 joypads via SPI bus" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: cros_ec_keyb - remove extraneous 'const' Input: add support for PlayStation 1/2 joypads connected via SPI Input: xpad - add USB IDs for Mad Catz Brawlstick and Razer Sabertooth Input: xpad - sync supported devices with xboxdrv Input: xpad - sort supported devices by USB ID
2017-05-13Merge tag 'upstream-4.12-rc1' of git://git.infradead.org/linux-ubifsLinus Torvalds
Pull UBI/UBIFS updates from Richard Weinberger: - new config option CONFIG_UBIFS_FS_SECURITY - minor improvements - random fixes * tag 'upstream-4.12-rc1' of git://git.infradead.org/linux-ubifs: ubi: Add debugfs file for tracking PEB state ubifs: Fix a typo in comment of ioctl2ubifs & ubifs2ioctl ubifs: Remove unnecessary assignment ubifs: Fix cut and paste error on sb type comparisons ubi: fastmap: Fix slab corruption ubifs: Add CONFIG_UBIFS_FS_SECURITY to disable/enable security labels ubi: Make mtd parameter readable ubi: Fix section mismatch
2017-05-13Merge branch 'for-linus-4.12-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML fixes from Richard Weinberger: "No new stuff, just fixes" * 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Add missing NR_CPUS include um: Fix to call read_initrd after init_bootmem um: Include kbuild.h instead of duplicating its macros um: Fix PTRACE_POKEUSER on x86_64 um: Set number of CPUs um: Fix _print_addr()
2017-05-13Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc fixes from Andrew Morton: "15 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm, docs: update memory.stat description with workingset* entries mm: vmscan: scan until it finds eligible pages mm, thp: copying user pages must schedule on collapse dax: fix PMD data corruption when fault races with write dax: fix data corruption when fault races with write ext4: return to starting transaction in ext4_dax_huge_fault() mm: fix data corruption due to stale mmap reads dax: prevent invalidation of mapped DAX entries Tigran has moved mm, vmalloc: fix vmalloc users tracking properly mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin gcov: support GCC 7.1 mm, vmstat: Remove spurious WARN() during zoneinfo print time: delete current_fs_time() hwpoison, memcg: forcibly uncharge LRU pages
2017-05-12[CIFS] Minor cleanup of xattr query functionSteve French
Some minor cleanup of cifs query xattr functions (will also make SMB3 xattr implementation cleaner as well). Signed-off-by: Steve French <steve.french@primarydata.com>
2017-05-12fs: cifs: transport: Use time_after for time comparisonKarim Eshapa
Use time_after kernel macro for time comparison that has safety check. Signed-off-by: Karim Eshapa <karim.eshapa@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-05-12SMB2: Fix share type handlingChristophe JAILLET
In fs/cifs/smb2pdu.h, we have: #define SMB2_SHARE_TYPE_DISK 0x01 #define SMB2_SHARE_TYPE_PIPE 0x02 #define SMB2_SHARE_TYPE_PRINT 0x03 Knowing that, with the current code, the SMB2_SHARE_TYPE_PRINT case can never trigger and printer share would be interpreted as disk share. So, test the ShareType value for equality instead. Fixes: faaf946a7d5b ("CIFS: Add tree connect/disconnect capability for SMB2") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-05-12cifs: cifsacl: Use a temporary ops variable to reduce code lengthJoe Perches via samba-technical
Create an ops variable to store tcon->ses->server->ops and cache indirections and reduce code size a trivial bit. $ size fs/cifs/cifsacl.o* text data bss dec hex filename 5338 136 8 5482 156a fs/cifs/cifsacl.o.new 5371 136 8 5515 158b fs/cifs/cifsacl.o.old Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2017-05-12mm, docs: update memory.stat description with workingset* entriesRoman Gushchin
Commit 4b4cea91691d ("mm: vmscan: fix IO/refault regression in cache workingset transition") introduced three new entries in memory stat file: - workingset_refault - workingset_activate - workingset_nodereclaim This commit adds a corresponding description to the cgroup v2 docs. Link: http://lkml.kernel.org/r/1494530293-31236-1-git-send-email-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12mm: vmscan: scan until it finds eligible pagesMinchan Kim
Although there are a ton of free swap and anonymous LRU page in elgible zones, OOM happened. balloon invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=0, oom_score_adj=0 CPU: 7 PID: 1138 Comm: balloon Not tainted 4.11.0-rc6-mm1-zram-00289-ge228d67e9677-dirty #17 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 Call Trace: oom_kill_process+0x21d/0x3f0 out_of_memory+0xd8/0x390 __alloc_pages_slowpath+0xbc1/0xc50 __alloc_pages_nodemask+0x1a5/0x1c0 pte_alloc_one+0x20/0x50 __pte_alloc+0x1e/0x110 __handle_mm_fault+0x919/0x960 handle_mm_fault+0x77/0x120 __do_page_fault+0x27a/0x550 trace_do_page_fault+0x43/0x150 do_async_page_fault+0x2c/0x90 async_page_fault+0x28/0x30 Mem-Info: active_anon:424716 inactive_anon:65314 isolated_anon:0 active_file:52 inactive_file:46 isolated_file:0 unevictable:0 dirty:27 writeback:0 unstable:0 slab_reclaimable:3967 slab_unreclaimable:4125 mapped:133 shmem:43 pagetables:1674 bounce:0 free:4637 free_pcp:225 free_cma:0 Node 0 active_anon:1698864kB inactive_anon:261256kB active_file:208kB inactive_file:184kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:532kB dirty:108kB writeback:0kB shmem:172kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no DMA free:7316kB min:32kB low:44kB high:56kB active_anon:8064kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB slab_reclaimable:464kB slab_unreclaimable:40kB kernel_stack:0kB pagetables:24kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 992 992 1952 DMA32 free:9088kB min:2048kB low:3064kB high:4080kB active_anon:952176kB inactive_anon:0kB active_file:36kB inactive_file:0kB unevictable:0kB writepending:88kB present:1032192kB managed:1019388kB mlocked:0kB slab_reclaimable:13532kB slab_unreclaimable:16460kB kernel_stack:3552kB pagetables:6672kB bounce:0kB free_pcp:56kB local_pcp:24kB free_cma:0kB lowmem_reserve[]: 0 0 0 959 Movable free:3644kB min:1980kB low:2960kB high:3940kB active_anon:738560kB inactive_anon:261340kB active_file:188kB inactive_file:640kB unevictable:0kB writepending:20kB present:1048444kB managed:1010816kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:832kB local_pcp:60kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 DMA: 1*4kB (E) 0*8kB 18*16kB (E) 10*32kB (E) 10*64kB (E) 9*128kB (ME) 8*256kB (E) 2*512kB (E) 2*1024kB (E) 0*2048kB 0*4096kB = 7524kB DMA32: 417*4kB (UMEH) 181*8kB (UMEH) 68*16kB (UMEH) 48*32kB (UMEH) 14*64kB (MH) 3*128kB (M) 1*256kB (H) 1*512kB (M) 2*1024kB (M) 0*2048kB 0*4096kB = 9836kB Movable: 1*4kB (M) 1*8kB (M) 1*16kB (M) 1*32kB (M) 0*64kB 1*128kB (M) 2*256kB (M) 4*512kB (M) 1*1024kB (M) 0*2048kB 0*4096kB = 3772kB 378 total pagecache pages 17 pages in swap cache Swap cache stats: add 17325, delete 17302, find 0/27 Free swap = 978940kB Total swap = 1048572kB 524157 pages RAM 0 pages HighMem/MovableOnly 12629 pages reserved 0 pages cma reserved 0 pages hwpoisoned [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [ 433] 0 433 4904 5 14 3 82 0 upstart-udev-br [ 438] 0 438 12371 5 27 3 191 -1000 systemd-udevd With investigation, skipping page of isolate_lru_pages makes reclaim void because it returns zero nr_taken easily so LRU shrinking is effectively nothing and just increases priority aggressively. Finally, OOM happens. The problem is that get_scan_count determines nr_to_scan with eligible zones so although priority drops to zero, it couldn't reclaim any pages if the LRU contains mostly ineligible pages. get_scan_count: size = lruvec_lru_size(lruvec, lru, sc->reclaim_idx); size = size >> sc->priority; Assumes sc->priority is 0 and LRU list is as follows. N-N-N-N-H-H-H-H-H-H-H-H-H-H-H-H-H-H-H-H (Ie, small eligible pages are in the head of LRU but others are almost ineligible pages) In that case, size becomes 4 so VM want to scan 4 pages but 4 pages from tail of the LRU are not eligible pages. If get_scan_count counts skipped pages, it doesn't reclaim any pages remained after scanning 4 pages so it ends up OOM happening. This patch makes isolate_lru_pages try to scan pages until it encounters eligible zones's pages. [akpm@linux-foundation.org: clean up mind-bending `for' statement. Tweak comment text] Fixes: 3db65812d688 ("Revert "mm, vmscan: account for skipped pages as a partial scan"") Link: http://lkml.kernel.org/r/1494457232-27401-1-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12mm, thp: copying user pages must schedule on collapseDavid Rientjes
We have encountered need_resched warnings in __collapse_huge_page_copy() while doing {clear,copy}_user_highpage() over HPAGE_PMD_NR source pages. mm->mmap_sem is held for write, but the iteration is well bounded. Reschedule as needed. Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1705101426380.109808@chino.kir.corp.google.com Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12dax: fix PMD data corruption when fault races with writeRoss Zwisler
This is based on a patch from Jan Kara that fixed the equivalent race in the DAX PTE fault path. Currently DAX PMD read fault can race with write(2) in the following way: CPU1 - write(2) CPU2 - read fault dax_iomap_pmd_fault() ->iomap_begin() - sees hole dax_iomap_rw() iomap_apply() ->iomap_begin - allocates blocks dax_iomap_actor() invalidate_inode_pages2_range() - there's nothing to invalidate grab_mapping_entry() - we add huge zero page to the radix tree and map it to page tables The result is that hole page is mapped into page tables (and thus zeros are seen in mmap) while file has data written in that place. Fix the problem by locking exception entry before mapping blocks for the fault. That way we are sure invalidate_inode_pages2_range() call for racing write will either block on entry lock waiting for the fault to finish (and unmap stale page tables after that) or read fault will see already allocated blocks by write(2). Fixes: 9f141d6ef6258 ("dax: Call ->iomap_begin without entry lock during dax fault") Link: http://lkml.kernel.org/r/20170510172700.18991-1-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12dax: fix data corruption when fault races with writeJan Kara
Currently DAX read fault can race with write(2) in the following way: CPU1 - write(2) CPU2 - read fault dax_iomap_pte_fault() ->iomap_begin() - sees hole dax_iomap_rw() iomap_apply() ->iomap_begin - allocates blocks dax_iomap_actor() invalidate_inode_pages2_range() - there's nothing to invalidate grab_mapping_entry() - we add zero page in the radix tree and map it to page tables The result is that hole page is mapped into page tables (and thus zeros are seen in mmap) while file has data written in that place. Fix the problem by locking exception entry before mapping blocks for the fault. That way we are sure invalidate_inode_pages2_range() call for racing write will either block on entry lock waiting for the fault to finish (and unmap stale page tables after that) or read fault will see already allocated blocks by write(2). Fixes: 9f141d6ef6258a3a37a045842d9ba7e68f368956 Link: http://lkml.kernel.org/r/20170510085419.27601-5-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12ext4: return to starting transaction in ext4_dax_huge_fault()Jan Kara
DAX will return to locking exceptional entry before mapping blocks for a page fault to fix possible races with concurrent writes. To avoid lock inversion between exceptional entry lock and transaction start, start the transaction already in ext4_dax_huge_fault(). Fixes: 9f141d6ef6258a3a37a045842d9ba7e68f368956 Link: http://lkml.kernel.org/r/20170510085419.27601-4-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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