Commit Graph

812003 Commits

Author SHA1 Message Date
Corey Minyard a1466ec5b6 ipmi: Fix SSIF flag requests
Commit 89986496de ("ipmi: Turn off all activity on an idle ipmi
interface") modified the IPMI code to only request events when the
driver had somethine waiting for events.  The SSIF code, however,
was using the event fetch request to also fetch the flags.

Add a timer and the proper handling for the upper layer telling
whether flags fetches are required.

Reported-by: Kamlakant Patel <Kamlakant.Patel@cavium.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Kamlakant Patel <kamlakant.patel@cavium.com>
2019-02-09 19:48:41 -06:00
Yang Yingliang 401e7e88d4 ipmi_si: fix use-after-free of resource->name
When we excute the following commands, we got oops
rmmod ipmi_si
cat /proc/ioports

[ 1623.482380] Unable to handle kernel paging request at virtual address ffff00000901d478
[ 1623.482382] Mem abort info:
[ 1623.482383]   ESR = 0x96000007
[ 1623.482385]   Exception class = DABT (current EL), IL = 32 bits
[ 1623.482386]   SET = 0, FnV = 0
[ 1623.482387]   EA = 0, S1PTW = 0
[ 1623.482388] Data abort info:
[ 1623.482389]   ISV = 0, ISS = 0x00000007
[ 1623.482390]   CM = 0, WnR = 0
[ 1623.482393] swapper pgtable: 4k pages, 48-bit VAs, pgdp = 00000000d7d94a66
[ 1623.482395] [ffff00000901d478] pgd=000000dffbfff003, pud=000000dffbffe003, pmd=0000003f5d06e003, pte=0000000000000000
[ 1623.482399] Internal error: Oops: 96000007 [#1] SMP
[ 1623.487407] Modules linked in: ipmi_si(E) nls_utf8 isofs rpcrdma ib_iser ib_srpt target_core_mod ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_umad rdma_cm ib_cm dm_mirror dm_region_hash dm_log iw_cm dm_mod aes_ce_blk crypto_simd cryptd aes_ce_cipher ses ghash_ce sha2_ce enclosure sha256_arm64 sg sha1_ce hisi_sas_v2_hw hibmc_drm sbsa_gwdt hisi_sas_main ip_tables mlx5_ib ib_uverbs marvell ib_core mlx5_core ixgbe mdio hns_dsaf ipmi_devintf hns_enet_drv ipmi_msghandler hns_mdio [last unloaded: ipmi_si]
[ 1623.532410] CPU: 30 PID: 11438 Comm: cat Kdump: loaded Tainted: G            E     5.0.0-rc3+ #168
[ 1623.541498] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.37 11/21/2017
[ 1623.548822] pstate: a0000005 (NzCv daif -PAN -UAO)
[ 1623.553684] pc : string+0x28/0x98
[ 1623.557040] lr : vsnprintf+0x368/0x5e8
[ 1623.560837] sp : ffff000013213a80
[ 1623.564191] x29: ffff000013213a80 x28: ffff00001138abb5
[ 1623.569577] x27: ffff000013213c18 x26: ffff805f67d06049
[ 1623.574963] x25: 0000000000000000 x24: ffff00001138abb5
[ 1623.580349] x23: 0000000000000fb7 x22: ffff0000117ed000
[ 1623.585734] x21: ffff000011188fd8 x20: ffff805f67d07000
[ 1623.591119] x19: ffff805f67d06061 x18: ffffffffffffffff
[ 1623.596505] x17: 0000000000000200 x16: 0000000000000000
[ 1623.601890] x15: ffff0000117ed748 x14: ffff805f67d07000
[ 1623.607276] x13: ffff805f67d0605e x12: 0000000000000000
[ 1623.612661] x11: 0000000000000000 x10: 0000000000000000
[ 1623.618046] x9 : 0000000000000000 x8 : 000000000000000f
[ 1623.623432] x7 : ffff805f67d06061 x6 : fffffffffffffffe
[ 1623.628817] x5 : 0000000000000012 x4 : ffff00000901d478
[ 1623.634203] x3 : ffff0a00ffffff04 x2 : ffff805f67d07000
[ 1623.639588] x1 : ffff805f67d07000 x0 : ffffffffffffffff
[ 1623.644974] Process cat (pid: 11438, stack limit = 0x000000008d4cbc10)
[ 1623.651592] Call trace:
[ 1623.654068]  string+0x28/0x98
[ 1623.657071]  vsnprintf+0x368/0x5e8
[ 1623.660517]  seq_vprintf+0x70/0x98
[ 1623.668009]  seq_printf+0x7c/0xa0
[ 1623.675530]  r_show+0xc8/0xf8
[ 1623.682558]  seq_read+0x330/0x440
[ 1623.689877]  proc_reg_read+0x78/0xd0
[ 1623.697346]  __vfs_read+0x60/0x1a0
[ 1623.704564]  vfs_read+0x94/0x150
[ 1623.711339]  ksys_read+0x6c/0xd8
[ 1623.717939]  __arm64_sys_read+0x24/0x30
[ 1623.725077]  el0_svc_common+0x120/0x148
[ 1623.732035]  el0_svc_handler+0x30/0x40
[ 1623.738757]  el0_svc+0x8/0xc
[ 1623.744520] Code: d1000406 aa0103e2 54000149 b4000080 (39400085)
[ 1623.753441] ---[ end trace f91b6a4937de9835 ]---
[ 1623.760871] Kernel panic - not syncing: Fatal exception
[ 1623.768935] SMP: stopping secondary CPUs
[ 1623.775718] Kernel Offset: disabled
[ 1623.781998] CPU features: 0x002,21006008
[ 1623.788777] Memory Limit: none
[ 1623.798329] Starting crashdump kernel...
[ 1623.805202] Bye!

If io_setup is called successful in try_smi_init() but try_smi_init()
goes out_err before calling ipmi_register_smi(), so ipmi_unregister_smi()
will not be called while removing module. It leads to the resource that
allocated in io_setup() can not be freed, but the name(DEVICE_NAME) of
resource is freed while removing the module. It causes use-after-free
when cat /proc/ioports.

Fix this by calling io_cleanup() while try_smi_init() goes to out_err.
and don't call io_cleanup() until io_setup() returns successful to avoid
warning prints.

Fixes: 93c303d204 ("ipmi_si: Clean up shutdown a bit")
Cc: stable@vger.kernel.org
Reported-by: NuoHan Qiao <qiaonuohan@huawei.com>
Suggested-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-02-09 19:48:41 -06:00
Linus Torvalds df3865f8f5 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "One PM related driver bugfix and a MAINTAINERS update"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: Update the ocores i2c bus driver maintainer, etc
  i2c: omap: Use noirq system sleep pm ops to idle device for suspend
2019-02-09 13:43:12 -08:00
Linus Torvalds e8b50608f6 A batch of MIPS fixes for 5.0, nothing too scary.
- A workaround for a Loongson 3 CPU bug is the biggest change, but
    still fairly straightforward. It adds extra memory barriers (sync
    instructions) around atomics to avoid a CPU bug that can break
    atomicity.
 
  - Loongson64 also sees a fix for powering off some systems which would
    incorrectly reboot rather than waiting for the power down sequence to
    complete.
 
  - We have DT fixes for the Ingenic JZ4740 SoC & the JZ4780-based Ci20
    board, and a DT warning fix for the Nexsys4/MIPSfpga board.
 
  - The Cavium Octeon platform sees a further fix to the behaviour of the
    pcie_disable command line argument that was introduced in v3.3.
 
  - The VDSO, introduced in v4.4, sees build fixes for configurations of
    GCC that were built using the --with-fp-32= flag to specify a default
    32-bit floating point ABI.
 
  - get_frame_info() sees a fix for configurations with
    CONFIG_KALLSYMS=n, for which it previously always returned an error.
 
  - If the MIPS Coherence Manager (CM) reports an error then we'll now
    clear that error correctly so that the GCR_ERROR_CAUSE register will
    be updated with information about any future errors.
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Merge tag 'mips_fixes_5.0_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Paul Burton:
 "A batch of MIPS fixes for 5.0, nothing too scary.

   - A workaround for a Loongson 3 CPU bug is the biggest change, but
     still fairly straightforward. It adds extra memory barriers (sync
     instructions) around atomics to avoid a CPU bug that can break
     atomicity.

   - Loongson64 also sees a fix for powering off some systems which
     would incorrectly reboot rather than waiting for the power down
     sequence to complete.

   - We have DT fixes for the Ingenic JZ4740 SoC & the JZ4780-based Ci20
     board, and a DT warning fix for the Nexsys4/MIPSfpga board.

   - The Cavium Octeon platform sees a further fix to the behaviour of
     the pcie_disable command line argument that was introduced in v3.3.

   - The VDSO, introduced in v4.4, sees build fixes for configurations
     of GCC that were built using the --with-fp-32= flag to specify a
     default 32-bit floating point ABI.

   - get_frame_info() sees a fix for configurations with
     CONFIG_KALLSYMS=n, for which it previously always returned an
     error.

   - If the MIPS Coherence Manager (CM) reports an error then we'll now
     clear that error correctly so that the GCR_ERROR_CAUSE register
     will be updated with information about any future errors"

* tag 'mips_fixes_5.0_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: cm: reprime error cause
  mips: loongson64: remove unreachable(), fix loongson_poweroff().
  MIPS: Remove function size check in get_frame_info()
  MIPS: Use lower case for addresses in nexys4ddr.dts
  MIPS: Loongson: Introduce and use loongson_llsc_mb()
  MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
  MIPS: VDSO: Use same -m%-float cflag as the kernel proper
  MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
  DTS: CI20: Fix bugs in ci20's device tree.
  MIPS: DTS: jz4740: Correct interrupt number of DMA core
2019-02-09 12:41:14 -08:00
Linus Torvalds e5a8a11632 for-linus-20190209
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Merge tag 'for-linus-20190209' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request from Christoph, fixing namespace locking when
   dealing with the effects log, and a rapid add/remove issue (Keith)

 - blktrace tweak, ensuring requests with -1 sectors are shown (Jan)

 - link power management quirk for a Smasung SSD (Hans)

 - m68k nfblock dynamic major number fix (Chengguang)

 - series fixing blk-iolatency inflight counter issue (Liu)

 - ensure that we clear ->private when setting up the aio kiocb (Mike)

 - __find_get_block_slow() rate limit print (Tetsuo)

* tag 'for-linus-20190209' of git://git.kernel.dk/linux-block:
  blk-mq: remove duplicated definition of blk_mq_freeze_queue
  Blk-iolatency: warn on negative inflight IO counter
  blk-iolatency: fix IO hang due to negative inflight counter
  blktrace: Show requests without sector
  fs: ratelimit __find_get_block_slow() failure message.
  m68k: set proper major_num when specifying module param major_num
  libata: Add NOLPM quirk for SAMSUNG MZ7TE512HMHP-000L1 SSD
  nvme-pci: fix rapid add remove sequence
  nvme: lock NS list changes while handling command effects
  aio: initialize kiocb private in case any filesystems expect it.
2019-02-09 10:26:09 -08:00
Linus Torvalds 5610789ad0 - Fix a problem with the imx28 ECC engine
- Remove a debug trace introduced in 2b6f0090a3 ("mtd: Check
   add_mtd_device() ret code")
 - Make sure partitions of size 0 can be registered
 - Fix kernel-doc warning in the rawnand core
 - Fix the error path of spinand_init() (missing manufacturer cleanup
   in a few places)
 - Address a problem with the SPI NAND PROGRAM LOAD operation which
   does not work as expected on some parts.
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Merge tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:

 - Fix a problem with the imx28 ECC engine

 - Remove a debug trace introduced in 2b6f0090a3 ("mtd: Check
   add_mtd_device() ret code")

 - Make sure partitions of size 0 can be registered

 - Fix kernel-doc warning in the rawnand core

 - Fix the error path of spinand_init() (missing manufacturer cleanup in
   a few places)

 - Address a problem with the SPI NAND PROGRAM LOAD operation which does
   not work as expected on some parts.

* tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: gpmi: fix MX28 bus master lockup problem
  mtd: Make sure mtd->erasesize is valid even if the partition is of size 0
  mtd: Remove a debug trace in mtdpart.c
  mtd: rawnand: fix kernel-doc warnings
  mtd: spinand: Fix the error/cleanup path in spinand_init()
  mtd: spinand: Handle the case where PROGRAM LOAD does not reset the cache
2019-02-09 10:17:01 -08:00
Linus Torvalds 3e5e692fcd xen: fixes for 5.0-rc6
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Merge tag 'for-linus-5.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "Two very minor fixes: one remove of a #include for an unused header
  and a fix of the xen ML address in MAINTAINERS"

* tag 'for-linus-5.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  MAINTAINERS: unify reference to xen-devel list
  arch/arm/xen: Remove duplicate header
2019-02-09 09:44:08 -08:00
Linus Torvalds 46c291e277 ARM: SoC fixes for linux-5.0
This is a bit larger than normal, as we had not managed to send out
 a pull request before traveling for a week without my signing key.
 
 There are multiple code fixes for older bugs, all of which should
 get backported into stable kernels:
 
 - tango: one fix for multiplatform configurations broken on other
   platforms when tango is enabled
 - arm_scmi: device unregistration fix
 - iop32x: fix kernel oops from extraneous __init annotation
 - pxa: remove a double kfree
 - fsl qbman: close an interrupt clearing race
 
 The rest is the usual collection of smaller fixes for device tree
 files, on the renesas, allwinner, meson, omap, davinci, qualcomm
 and imx platforms. Some of these are for compile-time warnings,
 most are for board specific functionality that fails to work
 because of incorrect settings.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a bit larger than normal, as we had not managed to send out a
  pull request before traveling for a week without my signing key.

  There are multiple code fixes for older bugs, all of which should get
  backported into stable kernels:

   - tango: one fix for multiplatform configurations broken on other
     platforms when tango is enabled

   - arm_scmi: device unregistration fix

   - iop32x: fix kernel oops from extraneous __init annotation

   - pxa: remove a double kfree

   - fsl qbman: close an interrupt clearing race

  The rest is the usual collection of smaller fixes for device tree
  files, on the renesas, allwinner, meson, omap, davinci, qualcomm and
  imx platforms.

  Some of these are for compile-time warnings, most are for board
  specific functionality that fails to work because of incorrect
  settings"

* tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
  ARM: tango: Improve ARCH_MULTIPLATFORM compatibility
  firmware: arm_scmi: provide the mandatory device release callback
  ARM: iop32x/n2100: fix PCI IRQ mapping
  arm64: dts: add msm8996 compatible to gicv3
  ARM: dts: am335x-shc.dts: fix wrong cd pin level
  ARM: dts: n900: fix mmc1 card detect gpio polarity
  ARM: dts: omap3-gta04: Fix graph_port warning
  ARM: pxa: ssp: unneeded to free devm_ allocated data
  ARM: dts: r8a7743: Convert to new LVDS DT bindings
  soc: fsl: qbman: avoid race in clearing QMan interrupt
  arm64: dts: renesas: r8a77965: Enable DMA for SCIF2
  arm64: dts: renesas: r8a7796: Enable DMA for SCIF2
  arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2
  ARM: dts: da850: fix interrupt numbers for clocksource
  dt-bindings: imx8mq: Number clocks consecutively
  arm64: dts: meson: Fix mmc cd-gpios polarity
  ARM: dts: imx6sx: correct backward compatible of gpt
  ARM: dts: imx: replace gpio-key,wakeup with wakeup-source property
  ARM: dts: vf610-bk4: fix incorrect #address-cells for dspi3
  ARM: dts: meson8m2: mxiii-plus: mark the SD card detection GPIO active-low
  ...
2019-02-08 16:23:41 -08:00
Linus Torvalds 5bb513ed83 arm64 fixes for -rc6
- Fix kernel oops when attemping kexec_file() with a NULL cmdline
 
 - Fix page table output in debugfs when CONFIG_ARM64_USER_VA_BITS_52=y
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Two arm64 fixes for -rc6. They resolve a kernel NULL dereference in
  kexec and bogus kernel page table dumping when userspace is configured
  for 52-bit virtual addressing.

  Summary:

   - Fix kernel oops when attemping kexec_file() with a NULL cmdline

   - Fix page table output in debugfs when ARM64_USER_VA_BITS_52=y"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: kexec_file: handle empty command-line
  arm64: ptdump: Don't iterate kernel page tables using PTRS_PER_PXX
2019-02-08 16:21:33 -08:00
Linus Torvalds 820828bffe powerpc fixes for 5.0 #4
Just two fixes, both going to stable.
 
 Our support for split pmd page table lock had a bug which could lead to a crash
 on mremap() when using the Radix MMU (Power9 only).
 
 A fix for the PAPR SCM driver (nvdimm) we added last release, which had a bug
 where we might mis-handle a hypervisor response leading to us failing to attach
 the memory region.
 
 Thanks to:
   Aneesh Kumar K.V, Oliver O'Halloran.
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Merge tag 'powerpc-5.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Just two fixes, both going to stable.

   - Our support for split pmd page table lock had a bug which could
     lead to a crash on mremap() when using the Radix MMU (Power9 only).

   - A fix for the PAPR SCM driver (nvdimm) we added last release, which
     had a bug where we might mis-handle a hypervisor response leading
     to us failing to attach the memory region.

  Thanks to: Aneesh Kumar K.V, Oliver O'Halloran"

* tag 'powerpc-5.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/papr_scm: Use the correct bind address
  powerpc/radix: Fix kernel crash with mremap()
2019-02-08 16:04:12 -08:00
Linus Torvalds 6b2912cedc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull signal fixes from Eric Biederman:
 "This contains four small fixes for signal handling. A missing range
  check, a regression fix, prioritizing signals we have already started
  a signal group exit for, and better detection of synchronous signals.

  The confused decision of which signals to handle failed spectacularly
  when a timer was pointed at SIGBUS and the stack overflowed. Resulting
  in an unkillable process in an infinite loop instead of a SIGSEGV and
  core dump"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  signal: Better detection of synchronous signals
  signal: Always notice exiting tasks
  signal: Always attempt to allocate siginfo for SIGSTOP
  signal: Make siginmask safe when passed a signal of 0
2019-02-08 15:39:28 -08:00
Linus Torvalds 3b6e8204a9 SCSI fixes on 20190208
This is a set of five minor fixes (although, tecnhincally, the aicxxx
 fix is for a major problem in that the driver won't load without it,
 but I think the fact it's taken us since 4.10 to discover this
 indicates that the user base for these things has declined).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of five minor fixes (although, tecnhincally, the aicxxx
  fix is for a major problem in that the driver won't load without it,
  but I think the fact it's taken us since 4.10 to discover this
  indicates that the user base for these things has declined)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: cxlflash: Prevent deadlock when adapter probe fails
  Revert "scsi: libfc: Add WARN_ON() when deleting rports"
  scsi: sd_zbc: Fix zone information messages
  scsi: target: make the pi_prot_format ConfigFS path readable
  scsi: aic94xx: fix module loading
2019-02-08 15:37:17 -08:00
Linus Torvalds 2e277fa089 IOMMU Fix for Linux v5.0-rc5:
* Intel decided to leave the newly added Scalable Mode Feature
 	  default-disabled for now. The patch here accomplishes that.
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Merge tag 'iommu-fixes-v5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fix from Joerg Roedel:
 "Intel decided to leave the newly added Scalable Mode Feature
  default-disabled for now. The patch here accomplishes that"

* tag 'iommu-fixes-v5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Leave scalable mode default off
2019-02-08 15:34:10 -08:00
Linus Torvalds 70be9ac2b6 pci-v5.0-fixes-4
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Merge tag 'pci-v5.0-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX) that
  breaks PCIe on I.MX SoCs (Thinh Nguyen)"

* tag 'pci-v5.0-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX)
2019-02-08 15:32:10 -08:00
Linus Torvalds e2dac603d4 ACPI fix for 5.0-rc6
Prevent excessive ACPI debug messages from being printed to the
 kernel log, which has started to happen after one of the recent
 ACPICA commits (Erik Schmauss).
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Merge tag 'acpi-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "This prevents excessive ACPI debug messages from being printed to the
  kernel log, which has started to happen after one of the recent ACPICA
  commits (Erik Schmauss)"

* tag 'acpi-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Set debug output flags independent of ACPICA
2019-02-08 15:30:02 -08:00
Andrew Lunn 13c80dda84 MAINTAINERS: Update the ocores i2c bus driver maintainer, etc
The listed maintainer has not been responding to emails for a while.
Add myself as a second maintainer.

Add the platform data include file, which was not listed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-02-08 22:15:24 +01:00
Liu Bo 2698484178 blk-mq: remove duplicated definition of blk_mq_freeze_queue
As the prototype has been defined in "include/linux/blk-mq.h", the one
in "block/blk-mq.h" can be removed then.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08 12:42:29 -07:00
Liu Bo 391f552af2 Blk-iolatency: warn on negative inflight IO counter
This is to catch any unexpected negative value of inflight IO counter.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08 12:42:27 -07:00
Liu Bo 8c772a9bfc blk-iolatency: fix IO hang due to negative inflight counter
Our test reported the following stack, and vmcore showed that
->inflight counter is -1.

[ffffc9003fcc38d0] __schedule at ffffffff8173d95d
[ffffc9003fcc3958] schedule at ffffffff8173de26
[ffffc9003fcc3970] io_schedule at ffffffff810bb6b6
[ffffc9003fcc3988] blkcg_iolatency_throttle at ffffffff813911cb
[ffffc9003fcc3a20] rq_qos_throttle at ffffffff813847f3
[ffffc9003fcc3a48] blk_mq_make_request at ffffffff8137468a
[ffffc9003fcc3b08] generic_make_request at ffffffff81368b49
[ffffc9003fcc3b68] submit_bio at ffffffff81368d7d
[ffffc9003fcc3bb8] ext4_io_submit at ffffffffa031be00 [ext4]
[ffffc9003fcc3c00] ext4_writepages at ffffffffa03163de [ext4]
[ffffc9003fcc3d68] do_writepages at ffffffff811c49ae
[ffffc9003fcc3d78] __filemap_fdatawrite_range at ffffffff811b6188
[ffffc9003fcc3e30] filemap_write_and_wait_range at ffffffff811b6301
[ffffc9003fcc3e60] ext4_sync_file at ffffffffa030cee8 [ext4]
[ffffc9003fcc3ea8] vfs_fsync_range at ffffffff8128594b
[ffffc9003fcc3ee8] do_fsync at ffffffff81285abd
[ffffc9003fcc3f18] sys_fsync at ffffffff81285d50
[ffffc9003fcc3f28] do_syscall_64 at ffffffff81003c04
[ffffc9003fcc3f50] entry_SYSCALL_64_after_swapgs at ffffffff81742b8e

The ->inflight counter may be negative (-1) if

1) blk-iolatency was disabled when the IO was issued,

2) blk-iolatency was enabled before this IO reached its endio,

3) the ->inflight counter is decreased from 0 to -1 in endio()

In fact the hang can be easily reproduced by the below script,

H=/sys/fs/cgroup/unified/
P=/sys/fs/cgroup/unified/test

echo "+io" > $H/cgroup.subtree_control
mkdir -p $P

echo $$ > $P/cgroup.procs

xfs_io -f -d -c "pwrite 0 4k" /dev/sdg

echo "`cat /sys/block/sdg/dev` target=1000000" > $P/io.latency

xfs_io -f -d -c "pwrite 0 4k" /dev/sdg

This fixes the problem by freezing the queue so that while
enabling/disabling iolatency, there is no inflight rq running.

Note that quiesce_queue is not needed as this only updating iolatency
configuration about which dispatching request_queue doesn't care.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-08 12:42:26 -07:00
Linus Torvalds 27b4ad621e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "This pull request is dedicated to the upcoming snowpocalypse parts 2
  and 3 in the Pacific Northwest:

   1) Drop profiles are broken because some drivers use dev_kfree_skb*
      instead of dev_consume_skb*, from Yang Wei.

   2) Fix IWLWIFI kconfig deps, from Luca Coelho.

   3) Fix percpu maps updating in bpftool, from Paolo Abeni.

   4) Missing station release in batman-adv, from Felix Fietkau.

   5) Fix some networking compat ioctl bugs, from Johannes Berg.

   6) ucc_geth must reset the BQL queue state when stopping the device,
      from Mathias Thore.

   7) Several XDP bug fixes in virtio_net from Toshiaki Makita.

   8) TSO packets must be sent always on queue 0 in stmmac, from Jose
      Abreu.

   9) Fix socket refcounting bug in RDS, from Eric Dumazet.

  10) Handle sparse cpu allocations in bpf selftests, from Martynas
      Pumputis.

  11) Make sure mgmt frames have enough tailroom in mac80211, from Felix
      Feitkau.

  12) Use safe list walking in sctp_sendmsg() asoc list traversal, from
      Greg Kroah-Hartman.

  13) Make DCCP's ccid_hc_[rt]x_parse_options always check for NULL
      ccid, from Eric Dumazet.

  14) Need to reload WoL password into bcmsysport device after deep
      sleeps, from Florian Fainelli.

  15) Remove filter from mask before freeing in cls_flower, from Petr
      Machata.

  16) Missing release and use after free in error paths of s390 qeth
      code, from Julian Wiedmann.

  17) Fix lockdep false positive in dsa code, from Marc Zyngier.

  18) Fix counting of ATU violations in mv88e6xxx, from Andrew Lunn.

  19) Fix EQ firmware assert in qed driver, from Manish Chopra.

  20) Don't default Caivum PTP to Y in kconfig, from Bjorn Helgaas"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
  net: dsa: b53: Fix for failure when irq is not defined in dt
  sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
  geneve: should not call rt6_lookup() when ipv6 was disabled
  net: Don't default Cavium PTP driver to 'y'
  net: broadcom: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: via-velocity: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: tehuti: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: sun: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: fsl_ucc_hdlc: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: fec_mpc52xx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: smsc: epic100: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: dscc4: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: tulip: de2104x: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net: defxx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
  net/mlx5e: Don't overwrite pedit action when multiple pedit used
  net/mlx5e: Update hw flows when encap source mac changed
  qed*: Advance drivers version to 8.37.0.20
  qed: Change verbosity for coalescing message.
  qede: Fix system crash on configuring channels.
  qed: Consider TX tcs while deriving the max num_queues for PF.
  ...
2019-02-08 11:21:54 -08:00
Linus Torvalds 680905431b Char/Misc fixes for 5.0-rc6
Here are some small char and misc driver fixes for 5.0-rc6.
 
 Nothing huge here, some more binderfs fixups found as people use it, and
 there is a "large" selftest added to validate the binderfs code, which
 makes up the majority of this pull request.
 
 There's also some small mei and mic fixes to resolve some reported
 issues.
 
 All of these have been in linux-next for over a week with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Here are some small char and misc driver fixes for 5.0-rc6.

  Nothing huge here, some more binderfs fixups found as people use it,
  and there is a "large" selftest added to validate the binderfs code,
  which makes up the majority of this pull request.

  There's also some small mei and mic fixes to resolve some reported
  issues.

  All of these have been in linux-next for over a week with no reported
  issues"

* tag 'char-misc-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mic: vop: Fix crash on remove
  mic: vop: Fix use-after-free on remove
  binderfs: remove separate device_initcall()
  fpga: stratix10-soc: fix wrong of_node_put() in init function
  mic: vop: Fix broken virtqueues
  mei: free read cb on ctrl_wr list flush
  samples: mei: use /dev/mei0 instead of /dev/mei
  mei: me: add ice lake point device id.
  binderfs: respect limit on binder control creation
  binder: fix CONFIG_ANDROID_BINDER_DEVICES
  selftests: add binderfs selftests
2019-02-08 10:56:31 -08:00
Linus Torvalds 8c8e62cc98 Driver core fixes for 5.0-rc6
Here are some driver core fixes for 5.0-rc6.
 
 Well, not so much "driver core" as "debugfs".  There's a lot of
 outstanding debugfs cleanup patches coming in through different
 subsystem trees, and in that process the debugfs core was found that it
 really should return errors when something bad happens, to prevent
 random files from showing up in the root of debugfs afterward.  So
 debugfs was fixed up to handle this properly, and then two fixes for
 the relay and blk-mq code was needed as it was making invalid
 assumptions about debugfs return values.
 
 There's also a cacheinfo fix in here that resolves a tiny issue.
 
 All of these have been in linux-next for over a week with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are some driver core fixes for 5.0-rc6.

  Well, not so much "driver core" as "debugfs". There's a lot of
  outstanding debugfs cleanup patches coming in through different
  subsystem trees, and in that process the debugfs core was found that
  it really should return errors when something bad happens, to prevent
  random files from showing up in the root of debugfs afterward. So
  debugfs was fixed up to handle this properly, and then two fixes for
  the relay and blk-mq code was needed as it was making invalid
  assumptions about debugfs return values.

  There's also a cacheinfo fix in here that resolves a tiny issue.

  All of these have been in linux-next for over a week with no reported
  problems"

* tag 'driver-core-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  blk-mq: protect debugfs_create_files() from failures
  relay: check return of create_buf_file() properly
  debugfs: debugfs_lookup() should return NULL if not found
  debugfs: return error values, not NULL
  debugfs: fix debugfs_rename parameter checking
  cacheinfo: Keep the old value if of_property_read_u32 fails
2019-02-08 10:53:44 -08:00
Linus Torvalds e464f50c05 Staging/IIO driver fixes for 5.0-rc6
Here are some small iio and staging driver fixes for 5.0-rc6.
 
 Nothing big, just resolve some reported IIO driver issues, and one
 staging driver bug.  One staging driver patch was added and then
 reverted as well.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver fixes from Greg KH:
 "Here are some small iio and staging driver fixes for 5.0-rc6.

  Nothing big, just resolve some reported IIO driver issues, and one
  staging driver bug. One staging driver patch was added and then
  reverted as well.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  Revert "staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()"
  staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()
  staging: octeon: fix broken phylib usage
  iio: ti-ads8688: Update buffer allocation for timestamps
  tools: iio: iio_generic_buffer: make num_loops signed
  iio: adc: axp288: Fix TS-pin handling
  iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
2019-02-08 10:51:59 -08:00
Linus Torvalds e22a15d1c4 TTY/Serial fixes for 5.0-rc6
Here are some small tty and serial fixes for 5.0-rc6.
 
 Nothing huge, just a few small fixes for reported issues.  The speakup
 fix is in here as it is a tty operation issue.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some small tty and serial fixes for 5.0-rc6.

  Nothing huge, just a few small fixes for reported issues. The speakup
  fix is in here as it is a tty operation issue.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'tty-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: fix race between flush_to_ldisc and tty_open
  staging: speakup: fix tty-operation NULL derefs
  serial: sh-sci: Do not free irqs that have already been freed
  serial: 8250_pci: Make PCI class test non fatal
  tty: serial: 8250_mtk: Fix potential NULL pointer dereference
2019-02-08 10:49:55 -08:00
Linus Torvalds 00a159a000 USB fixes for 5.0-rc6
Here are some small USB fixes for 5.0-rc6.
 
 Nothing huge, the normal amount of USB gadget fixes as well as some USB
 phy fixes.  There's also a typec fix as well.  Full details are in the
 shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Grek KH:
 "Here are some small USB fixes for 5.0-rc6.

  Nothing huge, the normal amount of USB gadget fixes as well as some
  USB phy fixes. There's also a typec fix as well. Full details are in
  the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: typec: tcpm: Correct the PPS out_volt calculation
  usb: gadget: musb: fix short isoc packets with inventra dma
  usb: phy: am335x: fix race condition in _probe
  usb: dwc3: exynos: Fix error handling of clk_prepare_enable
  usb: phy: fix link errors
  usb: gadget: udc: net2272: Fix bitwise and boolean operations
  usb: dwc3: gadget: Handle 0 xfer length for OUT EP
2019-02-08 10:48:26 -08:00
Linus Torvalds bd5ff862ec Changes since last update:
- Fix cache coherency problem with writeback mappings
 - Fix buffer deadlock when shutting fs down
 - Fix a null pointer dereference when running online repair
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Merge tag 'xfs-5.0-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "Here are a handful of XFS fixes to fix a data corruption problem, a
  crasher bug, and a deadlock.

  Summary:

   - Fix cache coherency problem with writeback mappings

   - Fix buffer deadlock when shutting fs down

   - Fix a null pointer dereference when running online repair"

* tag 'xfs-5.0-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: set buffer ops when repair probes for btree type
  xfs: end sync buffer I/O properly on shutdown error
  xfs: eof trim writeback mapping as soon as it is cached
2019-02-08 10:46:14 -08:00
Linus Torvalds adcbc921d3 drm amdgpu, vmwgfx, i915, omap, sun4i fixes
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Merge tag 'drm-fixes-2019-02-08' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Missed fixes last week as had nothing until amdgpu showed up on
  Saturday. Other stuff has since rolled in along with some more amdgpu
  fixes, so we have two weeks of those, and some i915, vmwgfx, sun4i,
  rockchip and omap fixes.

  amdgpu/radeon:
   - fix crash on passthrough for SI
   - fencing fix for shared buffers
   - APU hwmon fix
   - API powerplay fix
   - eDP freesync fix
   - PASID mgr locking fix
   - KFD warning fix
   - DC/powerplay fix
   - raven revision ids fix
   - vega20 doorbell fix

  i915:
   - SNB display fix
   - SKL srckey mask fix
   - ICL DDI clock selection fix

  vmwgfx:
   - DMA API fix
   - IOMMU detection fix
   - display fixes

  sun4i:
   - tcon clock fix

  rockchip:
   - SPDX identifier fix

  omap:
   - DSI fixes"

* tag 'drm-fixes-2019-02-08' of git://anongit.freedesktop.org/drm/drm: (28 commits)
  drm/omap: dsi: Hack-fix DSI bus flags
  drm/omap: dsi: Fix OF platform depopulate
  drm/omap: dsi: Fix crash in DSI debug dumps
  drm/i915: Try to sanitize bogus DPLL state left over by broken SNB BIOSen
  drm/amd/display: Attach VRR properties for eDP connectors
  drm/amdkfd: Fix if preprocessor statement above kfd_fill_iolink_info_for_cpu
  drm/amdgpu: use spin_lock_irqsave to protect vm_manager.pasid_idr
  drm/i915: always return something on DDI clock selection
  drm/i915: Fix skl srckey mask bits
  drm/vmwgfx: Improve on IOMMU detection
  drm/vmwgfx: Fix setting of dma masks
  drm/vmwgfx: Also check for crtc status while checking for DU active
  drm/vmwgfx: Fix an uninitialized fence handle value
  drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
  drm/sun4i: tcon: Prepare and enable TCON channel 0 clock at init
  drm/amdgpu: fix the incorrect external id for raven series
  drm/amdgpu: Implement doorbell self-ring for NBIO 7.4
  drm/amd/display: Fix fclk idle state
  drm/amdgpu: Transfer fences to dmabuf importer
  drm/amd/powerplay: Fix missing break in switch
  ...
2019-02-08 10:43:15 -08:00
Lukas Bulwahn 9ab7d228e9 MAINTAINERS: unify reference to xen-devel list
In the linux kernel MAINTAINERS file, largely
  "xen-devel@lists.xenproject.org (moderated for non-subscribers)"
is used to refer to the xen-devel mailing list.

The DRM DRIVERS FOR XEN section entry mentions
xen-devel@lists.xen.org instead, but that is just the same
mailing list as the mailing list above.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2019-02-08 17:18:00 +01:00
Arun Parameswaran 39841cc1cb net: dsa: b53: Fix for failure when irq is not defined in dt
Fixes the issues with non BCM58XX chips in the b53 driver
failing, when the irq is not specified in the device tree.

Removed the check for BCM58XX in b53_srab_prepare_irq(),
so the 'port->irq' will be set to '-EXIO' if the irq is not
specified in the device tree.

Fixes: 16994374a6 ("net: dsa: b53: Make SRAB driver manage port interrupts")
Fixes: b2ddc48a81 ("net: dsa: b53: Do not fail when IRQ are not initialized")
Signed-off-by: Arun Parameswaran <arun.parameswaran@broadcom.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07 18:18:37 -08:00
Dave Airlie dada163c5e drm-misc-fixes for v5.0-rc6:
- Fixes to omap/dsi encoder.
 - Clock fix for sun4i.
 - Licensing header fix for rockchip.
 - Fix division by zero in the mode when trying to set a mode on
   i915 with GVT-g enabled.
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Merge tag 'drm-misc-fixes-2019-02-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v5.0-rc6:
- Fixes to omap/dsi encoder.
- Clock fix for sun4i.
- Licensing header fix for rockchip.
- Fix division by zero in the mode when trying to set a mode on
  i915 with GVT-g enabled.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/84462cef-609f-e2af-084a-f9fe2b05c53e@linux.intel.com
2019-02-08 10:32:49 +10:00
Dave Airlie 151e3d6add drm/i915 fixes for v5.0-rc6:
- SNB DPLL sanitize
 - ICL DDI clock selection
 - SLK srckey mask
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Merge tag 'drm-intel-fixes-2019-02-07-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.0-rc6:
- SNB DPLL sanitize
- ICL DDI clock selection
- SLK srckey mask

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87lg2s6nur.fsf@intel.com
2019-02-08 10:30:57 +10:00
Linus Torvalds 74e96711e3 platform-drivers-x86 for v5.0-2
Correct Documentation/ABI 4.21 KernelVersion to 5.0.
 
 The following is an automated git shortlog grouped by driver:
 
 Documentation/ABI:
  -  Correct mlxreg-io KernelVersion for 5.0
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Merge tag 'platform-drivers-x86-v5.0-2' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fixlet from Darren Hart:
 "Correct Documentation/ABI 4.21 KernelVersion to 5.0"

* tag 'platform-drivers-x86-v5.0-2' of git://git.infradead.org/linux-platform-drivers-x86:
  Documentation/ABI: Correct mlxreg-io KernelVersion for 5.0
2019-02-07 15:54:45 -07:00
Linus Torvalds e303a067ce Three security fixes.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Three security fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
  KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
  kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
2019-02-07 15:53:26 -07:00
Linus Torvalds ee6c0737a0 Two small nfsd bugfixes for 5.0, for an RDMA bug and a file clone bug.
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Merge tag 'nfsd-5.0-1' of git://linux-nfs.org/~bfields/linux

Pull nfsd fixes from Bruce Fields:
 "Two small nfsd bugfixes for 5.0, for an RDMA bug and a file clone bug"

* tag 'nfsd-5.0-1' of git://linux-nfs.org/~bfields/linux:
  svcrdma: Remove max_sge check at connect time
  nfsd: Fix error return values for nfsd4_clone_file_range()
2019-02-07 15:44:45 -07:00
Linus Torvalds 8b5cdbe595 - Fix DM core's missing memory barrier before waitqueue_active() calls.
- Fix DM core's clone_bio() to work when cloning a subset of a bio with
   an integrity payload; bio_integrity_trim() wasn't getting called due
   to bio_trim()'s early return.
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Merge tag 'for-5.0/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "Both of these fixes address issues in changes merged for 5.0-rc4:

   - Fix DM core's missing memory barrier before waitqueue_active()
     calls.

   - Fix DM core's clone_bio() to work when cloning a subset of a bio
     with an integrity payload; bio_integrity_trim() wasn't getting
     called due to bio_trim()'s early return"

* tag 'for-5.0/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: don't use bio_trim() afterall
  dm: add memory barrier before waitqueue_active
2019-02-07 15:42:43 -07:00
Jan Kara 0803de7804 blktrace: Show requests without sector
Currently, blktrace will not show requests that don't have any data as
rq->__sector is initialized to -1 which is out of device range and thus
discarded by act_log_check(). This is most notably the case for cache
flush requests sent to the device. Fix the problem by making
blk_rq_trace_sector() return 0 for requests without initialized sector.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-07 12:57:17 -07:00
Vladimir Kondratiev 05dc6001af
mips: cm: reprime error cause
Accordingly to the documentation
---cut---
The GCR_ERROR_CAUSE.ERR_TYPE field and the GCR_ERROR_MULT.ERR_TYPE
fields can be cleared by either a reset or by writing the current
value of GCR_ERROR_CAUSE.ERR_TYPE to the
GCR_ERROR_CAUSE.ERR_TYPE register.
---cut---
Do exactly this. Original value of cm_error may be safely written back;
it clears error cause and keeps other bits untouched.

Fixes: 3885c2b463 ("MIPS: CM: Add support for reporting CM cache errors")
Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@linux.intel.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org # v4.3+
2019-02-07 11:55:24 -08:00
Yifeng Li 8a96669d77
mips: loongson64: remove unreachable(), fix loongson_poweroff().
On my Yeeloong 8089, I noticed the machine fails to shutdown
properly, and often, the function mach_prepare_reboot() is
unexpectedly executed, thus the machine reboots instead. A
wait loop is needed to ensure the system is in a well-defined
state before going down.

In commit 997e93d4df ("MIPS: Hang more efficiently on
halt/powerdown/restart"), a general superset of the wait loop for all
platforms is already provided, so we don't need to implement our own.

This commit simply removes the unreachable() compiler marco after
mach_prepare_reboot(), thus allowing the execution of machine_hang().
My test shows that the machine is now able to shutdown successfully.

Please note that there are two different bugs preventing the machine
from shutting down, another work-in-progress commit is needed to
fix a lockup in cpufreq / i8259 driver, please read Reference, this
commit does not fix that bug.

Reference: https://lkml.org/lkml/2019/2/5/908
Signed-off-by: Yifeng Li <tomli@tomli.me>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-kernel@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org # v4.17+
2019-02-07 11:50:14 -08:00
David S. Miller ec7fd009e8 Merge branch 'ipv6-fixes'
Hangbin Liu says:

====================
fix two kernel panics when disabled IPv6 on boot up

When disabled IPv6 on boot up, since there is no ipv6 route tables, we should
not call rt6_lookup. Fix them by checking if we have inet6_dev pointer on
netdevice.

v2: Fix idev reference leak, declarations and code mixing as Stefano,
    Eric pointed. Since we only want to check if idev exists and not
    reference it, use __in6_dev_get() insteand of in6_dev_get().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07 10:48:42 -08:00
Hangbin Liu 173656acca sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
If we disabled IPv6 from the kernel command line (ipv6.disable=1), we should
not call ip6_err_gen_icmpv6_unreach(). This:

  ip link add sit1 type sit local 192.0.2.1 remote 192.0.2.2 ttl 1
  ip link set sit1 up
  ip addr add 198.51.100.1/24 dev sit1
  ping 198.51.100.2

if IPv6 is disabled at boot time, will crash the kernel.

v2: there's no need to use in6_dev_get(), use __in6_dev_get() instead,
    as we only need to check that idev exists and we are under
    rcu_read_lock() (from netif_receive_skb_internal()).

Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: ca15a078bd ("sit: generate icmpv6 error when receiving icmpv4 error")
Cc: Oussama Ghorbel <ghorbel@pivasoftware.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07 10:48:42 -08:00
Hangbin Liu c0a47e44c0 geneve: should not call rt6_lookup() when ipv6 was disabled
When we add a new GENEVE device with IPv6 remote, checking only for
IS_ENABLED(CONFIG_IPV6) is not enough as we may disable IPv6 in the
kernel command line (ipv6.disable=1), and calling rt6_lookup() would
cause a NULL pointer dereference.

v2:
- don't mix declarations and code (reported by Stefano Brivio, Eric Dumazet)
- there's no need to use in6_dev_get() as we only need to check that
  idev exists (reported by David Ahern). This is under RTNL, so we can
  simply use __in6_dev_get() instead (Stefano, Eric).

Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: c40e89fd35 ("geneve: configure MTU based on a lower device")
Cc: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07 10:48:42 -08:00
Peter Shier ecec76885b KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
Bugzilla: 1671904

There are multiple code paths where an hrtimer may have been started to
emulate an L1 VMX preemption timer that can result in a call to free_nested
without an intervening L2 exit where the hrtimer is normally
cancelled. Unconditionally cancel in free_nested to cover all cases.

Embargoed until Feb 7th 2019.

Signed-off-by: Peter Shier <pshier@google.com>
Reported-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Reported-by: Felix Wilhelm <fwilhelm@google.com>
Cc: stable@kernel.org
Message-Id: <20181011184646.154065-1-pshier@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-07 19:03:01 +01:00
Paolo Bonzini 353c0956a6 KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
Bugzilla: 1671930

Emulation of certain instructions (VMXON, VMCLEAR, VMPTRLD, VMWRITE with
memory operand, INVEPT, INVVPID) can incorrectly inject a page fault
when passed an operand that points to an MMIO address.  The page fault
will use uninitialized kernel stack memory as the CR2 and error code.

The right behavior would be to abort the VM with a KVM_EXIT_INTERNAL_ERROR
exit to userspace; however, it is not an easy fix, so for now just
ensure that the error code and CR2 are zero.

Embargoed until Feb 7th 2019.

Reported-by: Felix Wilhelm <fwilhelm@google.com>
Cc: stable@kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-07 19:02:56 +01:00
Jann Horn cfa3938117 kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
kvm_ioctl_create_device() does the following:

1. creates a device that holds a reference to the VM object (with a borrowed
   reference, the VM's refcount has not been bumped yet)
2. initializes the device
3. transfers the reference to the device to the caller's file descriptor table
4. calls kvm_get_kvm() to turn the borrowed reference to the VM into a real
   reference

The ownership transfer in step 3 must not happen before the reference to the VM
becomes a proper, non-borrowed reference, which only happens in step 4.
After step 3, an attacker can close the file descriptor and drop the borrowed
reference, which can cause the refcount of the kvm object to drop to zero.

This means that we need to grab a reference for the device before
anon_inode_getfd(), otherwise the VM can disappear from under us.

Fixes: 852b6d57dc ("kvm: add device control API")
Cc: stable@kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-07 19:02:38 +01:00
Eric W. Biederman 7146db3317 signal: Better detection of synchronous signals
Recently syzkaller was able to create unkillablle processes by
creating a timer that is delivered as a thread local signal on SIGHUP,
and receiving SIGHUP SA_NODEFERER.  Ultimately causing a loop failing
to deliver SIGHUP but always trying.

When the stack overflows delivery of SIGHUP fails and force_sigsegv is
called.  Unfortunately because SIGSEGV is numerically higher than
SIGHUP next_signal tries again to deliver a SIGHUP.

From a quality of implementation standpoint attempting to deliver the
timer SIGHUP signal is wrong.  We should attempt to deliver the
synchronous SIGSEGV signal we just forced.

We can make that happening in a fairly straight forward manner by
instead of just looking at the signal number we also look at the
si_code.  In particular for exceptions (aka synchronous signals) the
si_code is always greater than 0.

That still has the potential to pick up a number of asynchronous
signals as in a few cases the same si_codes that are used
for synchronous signals are also used for asynchronous signals,
and SI_KERNEL is also included in the list of possible si_codes.

Still the heuristic is much better and timer signals are definitely
excluded.  Which is enough to prevent all known ways for someone
sending a process signals fast enough to cause unexpected and
arguably incorrect behavior.

Cc: stable@vger.kernel.org
Fixes: a27341cd5f ("Prioritize synchronous signals over 'normal' signals")
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2019-02-07 09:00:36 -06:00
Eric W. Biederman 35634ffa17 signal: Always notice exiting tasks
Recently syzkaller was able to create unkillablle processes by
creating a timer that is delivered as a thread local signal on SIGHUP,
and receiving SIGHUP SA_NODEFERER.  Ultimately causing a loop
failing to deliver SIGHUP but always trying.

Upon examination it turns out part of the problem is actually most of
the solution.  Since 2.5 signal delivery has found all fatal signals,
marked the signal group for death, and queued SIGKILL in every threads
thread queue relying on signal->group_exit_code to preserve the
information of which was the actual fatal signal.

The conversion of all fatal signals to SIGKILL results in the
synchronous signal heuristic in next_signal kicking in and preferring
SIGHUP to SIGKILL.  Which is especially problematic as all
fatal signals have already been transformed into SIGKILL.

Instead of dequeueing signals and depending upon SIGKILL to
be the first signal dequeued, first test if the signal group
has already been marked for death.  This guarantees that
nothing in the signal queue can prevent a process that needs
to exit from exiting.

Cc: stable@vger.kernel.org
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Ref: ebf5ebe31d2c ("[PATCH] signal-fixes-2.5.59-A4")
History Tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2019-02-07 08:59:50 -06:00
Linus Torvalds d47e3da175 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fix from Jiri Kosina:
 "A fix for a bug in hid-debug that can lock up the kernel in infinite
  loop (CVE-2019-3819), from Vladis Dronov"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: debug: fix the ring buffer implementation
2019-02-07 11:51:31 +00:00
Erik Schmauss ce5cbf5349 ACPI: Set debug output flags independent of ACPICA
There was a divergence between Linux and ACPICA on the definition of
ACPI_DEBUG_DEFAULT. This divergence was solved by taking ACPICA's
definition in 4c1379d7bb. After resolving the divergence, it was
clear that Linux users wanted to use their old set of debug flags.
This change fixes the divergence by setting these debug flags during
acpi_early_init() rather than during global variable initialization
in acpixf.h (owned by ACPICA).

Fixes: 4c1379d7bb ("ACPICA: Debug output: Add option to display method/object evaluation")
Reported-by: Michael J Ruhl <michael.j.ruhl@intel.com>
Reported-by: Alex Gagniuc <Alex_Gagniuc@Dellteam.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-02-07 12:24:28 +01:00
Linus Torvalds 6f64e3a4de sound fixes for 5.0-rc6
A collection of a few small fixes.  The most significant one is the
 fix for the possible race at loading HD-audio drivers.  This has been
 present for long time and surfaced only in a rare occasion, but
 finally spotted out.
 
 The rest are usual device-specific fixes for HD-audio and USB-audio.
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Merge tag 'sound-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of a few small fixes.

  The most significant one is the fix for the possible race at loading
  HD-audio drivers. This has been present for long time and surfaced
  only in a rare occasion, but finally spotted out"

* tag 'sound-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/ca0132 - Fix build error without CONFIG_PCI
  ALSA: compress: Fix stop handling on compressed capture streams
  ALSA: usb-audio: Add support for new T+A USB DAC
  ALSA: hda - Serialize codec registrations
  ALSA: hda/realtek - Use a common helper for hp pin reference
  ALSA: hda/realtek - Fix lose hp_pins for disable auto mute
  ALSA: hda/realtek - Headset microphone support for System76 darp5
2019-02-07 08:33:56 +00:00
Linus Torvalds b0314565da virtio: fixes
A small fix for a uapi header, and a fix for VDPA for non-x86 guests.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "A small fix for a uapi header, and a fix for VDPA for non-x86 guests"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: drop internal struct from UAPI
  virtio: support VIRTIO_F_ORDER_PLATFORM
2019-02-07 08:05:28 +00:00