- 25 7月, 2016 17 次提交
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由 Ziyuan Xu 提交于
To slove the issue which was found on gru board for hs400. [ 4.616946] sdhci: Secure Digital Host Controller Interface driver [ 4.623135] sdhci: Copyright(c) Pierre Ossman [ 4.722575] sdhci-pltfm: SDHCI platform and OF driver helper [ 4.730962] sdhci-arasan fe330000.sdhci: No vmmc regulator found [ 4.737444] sdhci-arasan fe330000.sdhci: No vqmmc regulator found [ 4.774930] mmc0: SDHCI controller on fe330000.sdhci [fe330000.sdhci] using ADMA [ 4.980295] mmc0: switch to high-speed from hs200 failed, err:-84 [ 4.986487] mmc0: error -84 whilst initialising MMC card We should change HS400 mode selection timing to meet JEDEC specification. The JEDEC 5.1 said that change the frequency to <= 52MHZ after HS_TIMING switch. Refer to section 6.6.2.3 "HS400" timing mode selection: Set the "Timing Interface" parameter in the HS_TIMING[185] field of the Extended CSD register to 0x1 to switch to High Speed mode and then set the clock frequency to a value not greater than 52MHZ. Signed-off-by: NZiyuan Xu <xzy.xu@rock-chips.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Chaotian Jing 提交于
with CONFIG_HZ=100, the precision of jiffies is 10ms, and the generic_cmd6_time of some card is also 10ms. then, may be current time is only 5ms, but already timed out caused by jiffies precision. Signed-off-by: NChaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Chaotian Jing 提交于
Per JEDEC spec, it is not recommended to use CMD13 to get card status after speed mode switch. below are two reason about this: 1. CMD13 cannot be guaranteed due to the asynchronous operation. Therefore it is not recommended to use CMD13 to check busy completion of the timing change indication. 2. After switch to HS200, CMD13 will get response of 0x800, and even the busy signal gets de-asserted, the response of CMD13 is aslo 0x800. Signed-off-by: NChaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Chaotian Jing 提交于
Some MMC hosts do not support MMC_CAP_WAIT_WHILE_BUSY, but implements the ->card_busy() callback. In such cases, extend __mmc_switch() to use this method to check card status after switch command. Signed-off-by: NChaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Adrian Hunter 提交于
host->card_busy() was introduced for SD voltage switching which checks all 4 data lines. Increasingly, host->card_busy is being used to poll the the busy signal which is only data line 0 (DAT[0]). The current logic in sdhci_card_busy() does not work in that case because it returns false if any of the data lines is high. It also ignores possibilities: - data lines 1-3 are not connected and could show at any level - data lines 1-2 can be used by SDIO for other purposes According to the SD specification, it is OK to check any of the data lines for voltage switching, so change to use DAT[0] only. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Wolfram Sang 提交于
Sparse complains about the implicit cast. Making it explicit is indeed better coding style. Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Shawn Lin 提交于
Currently sdhci-arasan 5.1 can support enhanced strobe function, and we now limit it just for "arasan,sdhci-5.1". Add mmc-hs400-enhanced-strobe in DT to enable the function if we're sure our controller can support it. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Acked-by: NAdrian Hunter <adrian.hunter@intel.com> Reviewed-by: NDoug Anderson <dianders@chromium.org> Tested-by: NDoug Anderson <dianders@chromium.org> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Shawn Lin 提交于
We introduce HS400 with enhanced strobe function, so we need to add it for debug show. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Reviewed-by: NDouglas Anderson <dianders@chromium.org> Tested-by: NDouglas Anderson <dianders@chromium.org> Tested-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Shawn Lin 提交于
Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers. This new feature is optional, so it depends both on device's cap and host's cap to decide whether to use it or not. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com> Tested-by: NDouglas Anderson <dianders@chromium.org> Tested-by: NJaehoon Chung <jh80.chung@samsung.com> Acked-by: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Shawn Lin 提交于
This patch introduce mmc-hs400-enhanced-strobe for platforms which want to enable enhanced strobe function from DT if the mmc host controller claims to support enhanced strobe. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Reviewed-by: NDouglas Anderson <dianders@chromium.org> Tested-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Shawn Lin 提交于
mmc-hs400-enhanced-strobe is used to claim that the host can support hs400 mode with enhanced strobe introduced by emmc 5.1 spec. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Acked-by: NRob Herring <robh@kernel.org> Reviewed-by: NDouglas Anderson <dianders@chromium.org> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Geert Uytterhoeven 提交于
Submitters of device tree binding documentation may forget to CC the subsystem maintainer if this is missing. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Ludovic Desroches 提交于
Activating wakeup event is not enough to get a wakeup signal. The corresponding events have to be enabled in the Interrupt Status Enable Register too. It follows the specification and is needed at least by sdhci-of-at91. Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com> Acked-by: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Yuan, Juntao 提交于
In sectors alignment check, brq->data.blocks means sectors of the previous mqrq since data.blocks for mqrq_cur hasn't been updated yet. data.blocks will be updated later in mmc_blk_packed_hdr_wrq_prep or mmc_blk_rw_rq_prep. static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, ...... ...... struct mmc_blk_request *brq = &mq->mqrq_cur->brq; Signed-off-by: NYuan Juntao <juntao.yuan@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Simon Horman 提交于
Since commit 7ce45e95 ("mmc: sdhci: SD tuning is broken for some controllers") sdhci_execute_tuning() no longer includes a timeout in its loop counter(s) so remove portion of the comment regarding this. Signed-off-by: NSimon Horman <horms+renesas@verge.net.au> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Wolfram Sang 提交于
Replace hardcoded values with meaningful names and document what we know. Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: NSimon Horman <horms+renesas@verge.net.au> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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由 Linus Torvalds 提交于
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- 24 7月, 2016 1 次提交
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git://github.com/ceph/ceph-client由 Linus Torvalds 提交于
Pull ceph fix from Ilya Dryomov: "A fix for a long-standing bug in the incremental osdmap handling code that caused misdirected requests, tagged for stable" The tag is signed with a brand new key - Sage is on vacation and I didn't anticipate this" * tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client: libceph: apply new_state before new_up_client on incrementals
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- 23 7月, 2016 22 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 Linus Torvalds 提交于
Pull networking fixes from David Miller: 1) Fix memory leak in nftables, from Liping Zhang. 2) Need to check result of vlan_insert_tag() in batman-adv otherwise we risk NULL skb derefs, from Sven Eckelmann. 3) Check for dev_alloc_skb() failures in cfg80211, from Gregory Greenman. 4) Handle properly when we have ppp_unregister_channel() happening in parallel with ppp_connect_channel(), from WANG Cong. 5) Fix DCCP deadlock, from Eric Dumazet. 6) Bail out properly in UDP if sk_filter() truncates the packet to be smaller than even the space that the protocol headers need. From Michal Kubecek. 7) Similarly for rose, dccp, and sctp, from Willem de Bruijn. 8) Make TCP challenge ACKs less predictable, from Eric Dumazet. 9) Fix infinite loop in bgmac_dma_tx_add() from Florian Fainelli. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits) packet: propagate sock_cmsg_send() error net/mlx5e: Fix del vxlan port command buffer memset packet: fix second argument of sock_tx_timestamp() net: switchdev: change ageing_time type to clock_t Update maintainer for EHEA driver. net/mlx4_en: Add resilience in low memory systems net/mlx4_en: Move filters cleanup to a proper location sctp: load transport header after sk_filter net/sched/sch_htb: clamp xstats tokens to fit into 32-bit int net: cavium: liquidio: Avoid dma_unmap_single on uninitialized ndata net: nb8800: Fix SKB leak in nb8800_receive() et131x: Fix logical vs bitwise check in et131x_tx_timeout() vlan: use a valid default mtu value for vlan over macsec net: bgmac: Fix infinite loop in bgmac_dma_tx_add() mlxsw: spectrum: Prevent invalid ingress buffer mapping mlxsw: spectrum: Prevent overwrite of DCB capability fields mlxsw: spectrum: Don't emit errors when PFC is disabled mlxsw: spectrum: Indicate support for autonegotiation mlxsw: spectrum: Force link training according to admin state r8152: add MODULE_VERSION ...
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs由 Linus Torvalds 提交于
Pull overlayfs fixes from Miklos Szeredi: "This contains a fix for a potential crash/corruption issue and another where the suid/sgid bits weren't cleared on write" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: verify upper dentry in ovl_remove_and_whiteout() ovl: Copy up underlying inode's ->i_mode to overlay inode ovl: handle ATTR_KILL*
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由 Linus Torvalds 提交于
Merge misc fixes from Andrew Morton: "Five fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: pps: do not crash when failed to register tools/vm/slabinfo: fix an unintentional printf testing/radix-tree: fix a macro expansion bug radix-tree: fix radix_tree_iter_retry() for tagged iterators. mm: memcontrol: fix cgroup creation failure after many small jobs
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git://people.freedesktop.org/~airlied/linux由 Linus Torvalds 提交于
Pull intel kabylake drm fixes from Dave Airlie: "As mentioned Intel has gathered all the Kabylake fixes from -next, which we've enabled in 4.7 for the first time, these are pretty much limited in scope to only affects kabylake, which is hw that isn't shipping yet. So I'm mostly okay with it going in now. If we don't land this, it might be a good idea to disable kabylake support in 4.7 before we ship" * tag 'drm-fixes-for-v4.7-rc8-intel-kbl' of git://people.freedesktop.org/~airlied/linux: (28 commits) drm/i915/kbl: Introduce the first official DMC for Kabylake. drm/i915: Introduce Kabypoint PCH for Kabylake H/DT. drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidate drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance drm/i195/fbc: Add WaFbcNukeOnHostModify drm/i915/gen9: Add WaFbcWakeMemOn drm/i915/gen9: Add WaFbcTurnOffFbcWatermark drm/i915/kbl: Add WaClearSlmSpaceAtContextSwitch drm/i915/gen9: Add WaEnableChickenDCPR drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing drm/i915/kbl: Add WaDisableGafsUnitClkGating drm/i915/kbl: Add WaForGAMHang drm/i915: Add WaInsertDummyPushConstP for bxt and kbl drm/i915/kbl: Add WaDisableDynamicCreditSharing drm/i915/kbl: Add WaDisableGamClockGating drm/i915/gen9: Enable must set chicken bits in config0 reg drm/i915/kbl: Add WaDisableLSQCROPERFforOCL drm/i915/kbl: Add WaDisableSDEUnitClockGating drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0 drm/i915/kbl: Add WaEnableGapsTsvCreditFix ...
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git://people.freedesktop.org/~airlied/linux由 Linus Torvalds 提交于
Pull drm fixes from Dave Airlie: "Two i915 regression fixes. Intel have submitted some Kabylake fixes I'll send separately, since this is the first kernel with kabylake support and they don't go much outside that area I think they should be fine" * tag 'drm-fixes-for-v4.7-rc8-intel' of git://people.freedesktop.org/~airlied/linux: drm/i915: add missing condition for committing planes on crtc drm/i915: Treat eDP as always connected, again
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k由 Linus Torvalds 提交于
Pull m68k upddates from Geert Uytterhoeven: - assorted spelling fixes - defconfig updates * tag 'm68k-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k/defconfig: Update defconfigs for v4.7-rc2 m68k: Assorted spelling fixes
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc由 Linus Torvalds 提交于
Pull ARM SoC fixes from Olof Johansson: "A handful of fixes before final release: Marvell Armada: - One to fix a typo in the devicetree specifying memory ranges for the crypto engine - Two to deal with marking PCI and device-memory as strongly ordered to avoid hardware deadlocks, in particular when enabling above crypto driver. - Compile fix for PM Allwinner: - DT clock fixes to deal with u-boot-enabled framebuffer (simplefb). - Make R8 (C.H.I.P. SoC) inherit system compatibility from A13 to make clocks register proper. Tegra: - Fix SD card voltage setting on the Tegra3 Beaver dev board Misc: - Two maintainers updates for STM32 and STi platforms" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: tegra: beaver: Allow SD card voltage to be changed MAINTAINERS: update STi maintainer list MAINTAINERS: update STM32 maintainers list ARM: mvebu: compile pm code conditionally ARM: dts: sun7i: Fix pll3x2 and pll7x2 not having a parent clock ARM: dts: sunxi: Add pll3 to simplefb nodes clocks lists ARM: dts: armada-38x: fix MBUS_ID for crypto SRAM on Armada 385 Linksys ARM: mvebu: map PCI I/O regions strongly ordered ARM: mvebu: fix HW I/O coherency related deadlocks ARM: sunxi/dt: make the CHIP inherit from allwinner,sun5i-a13
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6由 Linus Torvalds 提交于
Pull crypto fixes from Herbert Xu: "This fixes a sporadic build failure in the qat driver as well as a memory corruption bug in rsa-pkcs1pad" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: rsa-pkcs1pad - fix rsa-pkcs1pad request struct crypto: qat - make qat_asym_algs.o depend on asn1 headers
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security由 Linus Torvalds 提交于
Pull key handling fixes from James Morris: "Quoting David Howells: Here are three miscellaneous fixes: (1) Fix a panic in some debugging code in PKCS#7. This can only happen by explicitly inserting a #define DEBUG into the code. (2) Fix the calculation of the digest length in the PE file parser. This causes a failure where there should be a success. (3) Fix the case where an X.509 cert can be added as an asymmetric key to a trusted keyring with no trust restriction if no AKID is supplied. Bugs (1) and (2) aren't particularly problematic, but (3) allows a security check to be bypassed. Happily, this is a recent regression and never made it into a released kernel" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: KEYS: Fix for erroneous trust of incorrectly signed X.509 certs pefile: Fix the failure of calculation for digest PKCS#7: Fix panic when referring to the empty AKID when DEBUG defined
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input由 Linus Torvalds 提交于
Pull input fixes from Dmitry Torokhov: "A few more fixes for the input subsystem: - restore naming for tsc2005 touchscreens as some userspace match on it - fix out of bound access in legacy keyboard driver - fixup in RMI4 driver Everything is tagged for stable as well" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: tsc200x - report proper input_dev name tty/vt/keyboard: fix OOB access in do_compute_shiftstate() Input: synaptics-rmi4 - fix maximum size check for F12 control register 8
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm由 Linus Torvalds 提交于
Pull libnvdimm fix from Dan Williams: "This contains a regression fix for a problem that was introduced in v4.7-rc6. In 4.7-rc1 we introduced auto-probing for the ACPI DSM (device- specific-method) format that the platform firmware implements for nvdimm devices. We initially fixed a regression in probing the QEMU DSM implementation by making acpi_check_dsm() tolerant of the way QEMU reports the "0 DSMs supported" condition. However, that broke HPE platforms since that tolerance caused the driver to mistakenly match the 1-zero-byte response those platforms give to "unknown" commands. Instead, we simply make the driver tolerant of not finding any supported DSMs. This has been tested to work with both QEMU and HPE platforms. This commit has appeared in a -next release with no reported issues" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nfit: make DIMM DSMs optional
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio由 Linus Torvalds 提交于
Pull GPIO fix from Linus Walleij: "Compile problem fix for Tegra, Sorry to send this in the last minute but Ingo says this build failure is very prominent so I'm not going to wait for v4.7 before sending it. It is a case of COMPILE_TEST causing more problems than it solves and I'm already swearing about me shooting myself in the foot with that gun :(" * tag 'gpio-v4.7-6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: tegra: don't auto-enable for COMPILE_TEST
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux由 Linus Torvalds 提交于
Pull clk fixes from Michael Turquette: "Fix a bug in the at91 clk driver, two compile time warnings in sunxi clk drivers, and one bug in a sunxi clk driver introduced in the 4.7 merge window" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: at91: fix clk_programmable_set_parent() clk: sunxi: remove unused variable clk: sunxi: display: Add per-clock flags clk: sunxi: tcon-ch1: Do not return a negative error in get_parent
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata由 Linus Torvalds 提交于
Pull libata fix from Tejun Heo: "Another fallout from max_sectors bump a couple years ago. The lite-on optical drive times out on large requests" * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: libata: LITE-ON CX1-JB256-HP needs lower max_sectors
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git://git.linaro.org/people/ulf.hansson/mmc由 Linus Torvalds 提交于
Pull MMC fixes from Ulf Hansson: "Here are a few late mmc fixes intended for v4.7 final. MMC core: - Fix eMMC packed command header endianness - Fix free of uninitialized buffer for mmc ioctl MMC host: - pxamci: Fix potential oops in ->probe()" * tag 'mmc-v4.7-rc7' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: pxamci: fix potential oops mmc: block: fix packed command header endianness mmc: block: fix free of uninitialized 'idata->buf'
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound由 Linus Torvalds 提交于
Pull sound fixes from Takashi Iwai: "No surprise, just a few small fixes: a couple of changes are seen in the core part, and both of them are rather for unusual error paths. The rest are the regular HD-audio fixes and one USB-audio regression fix" * tag 'sound-4.7-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: usb-audio: Fix quirks code is not called ALSA: hda: add AMD Stoney PCI ID with proper driver caps ALSA: hda - fix use-after-free after module unload ALSA: pcm: Free chmap at PCM free callback, too ALSA: ctl: Stop notification after disconnection ALSA: hda/realtek - add new pin definition in alc225 pin quirk table
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git://git.kernel.dk/linux-block由 Linus Torvalds 提交于
Pull NVMe fix from Jens Axboe: "Late addition here, it's basically a revert of a patch that was added in this merge window, but has proven to cause problems. This is swapping out the RCU based namespace protection with a good old mutex instead" * 'for-linus' of git://git.kernel.dk/linux-block: nvme: Remove RCU namespace protection
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由 Jiri Slaby 提交于
With this command sequence: modprobe plip modprobe pps_parport rmmod pps_parport the partport_pps modules causes this crash: BUG: unable to handle kernel NULL pointer dereference at (null) IP: parport_detach+0x1d/0x60 [pps_parport] Oops: 0000 [#1] SMP ... Call Trace: parport_unregister_driver+0x65/0xc0 [parport] SyS_delete_module+0x187/0x210 The sequence that builds up to this is: 1) plip is loaded and takes the parport device for exclusive use: plip0: Parallel port at 0x378, using IRQ 7. 2) pps_parport then fails to grab the device: pps_parport: parallel port PPS client parport0: cannot grant exclusive access for device pps_parport pps_parport: couldn't register with parport0 3) rmmod of pps_parport is then killed because it tries to access pardev->name, but pardev (taken from port->cad) is NULL. So add a check for NULL in the test there too. Link: http://lkml.kernel.org/r/20160714115245.12651-1-jslaby@suse.czSigned-off-by: NJiri Slaby <jslaby@suse.cz> Acked-by: NRodolfo Giometti <giometti@enneenne.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dan Carpenter 提交于
The curly braces are missing here so we print stuff unintentionally. Fixes: 9da4714a ('slub: slabinfo update for cmpxchg handling') Link: http://lkml.kernel.org/r/20160715211243.GE19522@mwandaSigned-off-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NChristoph Lameter <cl@linux.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Laura Abbott <labbott@fedoraproject.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dan Carpenter 提交于
There are no parentheses around this macro and it causes a problem when we do: index = rand() % THRASH_SIZE; Link: http://lkml.kernel.org/r/20160715210953.GC19522@mwandaSigned-off-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrey Ryabinin 提交于
radix_tree_iter_retry() resets slot to NULL, but it doesn't reset tags. Then NULL slot and non-zero iter.tags passed to radix_tree_next_slot() leading to crash: RIP: radix_tree_next_slot include/linux/radix-tree.h:473 find_get_pages_tag+0x334/0x930 mm/filemap.c:1452 .... Call Trace: pagevec_lookup_tag+0x3a/0x80 mm/swap.c:960 mpage_prepare_extent_to_map+0x321/0xa90 fs/ext4/inode.c:2516 ext4_writepages+0x10be/0x2b20 fs/ext4/inode.c:2736 do_writepages+0x97/0x100 mm/page-writeback.c:2364 __filemap_fdatawrite_range+0x248/0x2e0 mm/filemap.c:300 filemap_write_and_wait_range+0x121/0x1b0 mm/filemap.c:490 ext4_sync_file+0x34d/0xdb0 fs/ext4/fsync.c:115 vfs_fsync_range+0x10a/0x250 fs/sync.c:195 vfs_fsync fs/sync.c:209 do_fsync+0x42/0x70 fs/sync.c:219 SYSC_fdatasync fs/sync.c:232 SyS_fdatasync+0x19/0x20 fs/sync.c:230 entry_SYSCALL_64_fastpath+0x23/0xc1 arch/x86/entry/entry_64.S:207 We must reset iterator's tags to bail out from radix_tree_next_slot() and go to the slow-path in radix_tree_next_chunk(). Fixes: 46437f9a ("radix-tree: fix race in gang lookup") Link: http://lkml.kernel.org/r/1468495196-10604-1-git-send-email-aryabinin@virtuozzo.comSigned-off-by: NAndrey Ryabinin <aryabinin@virtuozzo.com> Reported-by: NDmitry Vyukov <dvyukov@google.com> Acked-by: NKonstantin Khlebnikov <koct9i@gmail.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Weiner 提交于
The memory controller has quite a bit of state that usually outlives the cgroup and pins its CSS until said state disappears. At the same time it imposes a 16-bit limit on the CSS ID space to economically store IDs in the wild. Consequently, when we use cgroups to contain frequent but small and short-lived jobs that leave behind some page cache, we quickly run into the 64k limitations of outstanding CSSs. Creating a new cgroup fails with -ENOSPC while there are only a few, or even no user-visible cgroups in existence. Although pinning CSSs past cgroup removal is common, there are only two instances that actually need an ID after a cgroup is deleted: cache shadow entries and swapout records. Cache shadow entries reference the ID weakly and can deal with the CSS having disappeared when it's looked up later. They pose no hurdle. Swap-out records do need to pin the css to hierarchically attribute swapins after the cgroup has been deleted; though the only pages that remain swapped out after offlining are tmpfs/shmem pages. And those references are under the user's control, so they are manageable. This patch introduces a private 16-bit memcg ID and switches swap and cache shadow entries over to using that. This ID can then be recycled after offlining when the CSS remains pinned only by objects that don't specifically need it. This script demonstrates the problem by faulting one cache page in a new cgroup and deleting it again: set -e mkdir -p pages for x in `seq 128000`; do [ $((x % 1000)) -eq 0 ] && echo $x mkdir /cgroup/foo echo $$ >/cgroup/foo/cgroup.procs echo trex >pages/$x echo $$ >/cgroup/cgroup.procs rmdir /cgroup/foo done When run on an unpatched kernel, we eventually run out of possible IDs even though there are no visible cgroups: [root@ham ~]# ./cssidstress.sh [...] 65000 mkdir: cannot create directory '/cgroup/foo': No space left on device After this patch, the IDs get released upon cgroup destruction and the cache and css objects get released once memory reclaim kicks in. [hannes@cmpxchg.org: init the IDR] Link: http://lkml.kernel.org/r/20160621154601.GA22431@cmpxchg.org Fixes: b2052564 ("mm: memcontrol: continue cache reclaim from offlined groups") Link: http://lkml.kernel.org/r/20160617162516.GD19084@cmpxchg.orgSigned-off-by: NJohannes Weiner <hannes@cmpxchg.org> Reported-by: NJohn Garcia <john.garcia@mesosphere.io> Reviewed-by: NVladimir Davydov <vdavydov@virtuozzo.com> Acked-by: NTejun Heo <tj@kernel.org> Cc: Nikolay Borisov <kernel@kyup.com> Cc: <stable@vger.kernel.org> [3.19+] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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