1. 06 Jul, 2018 7 commits
  2. 05 Jul, 2018 11 commits
    • Linus Torvalds's avatar
      Fix up non-directory creation in SGID directories · 0fa3ecd8
      Linus Torvalds authored
      sgid directories have special semantics, making newly created files in
      the directory belong to the group of the directory, and newly created
      subdirectories will also become sgid.  This is historically used for
      group-shared directories.
      
      But group directories writable by non-group members should not imply
      that such non-group members can magically join the group, so make sure
      to clear the sgid bit on non-directories for non-members (but remember
      that sgid without group execute means "mandatory locking", just to
      confuse things even more).
      Reported-by: default avatarJann Horn <jannh@google.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0fa3ecd8
    • Linus Torvalds's avatar
      autofs: rename 'autofs' module back to 'autofs4' · d02d21ea
      Linus Torvalds authored
      It turns out that systemd has a bug: it wants to load the autofs module
      early because of some initialization ordering with udev, and it doesn't
      do that correctly.  Everywhere else it does the proper "look up module
      name" that does the proper alias resolution, but in that early code, it
      just uses a hardcoded "autofs4" for the module name.
      
      The result of that is that as of commit a2225d93 ("autofs: remove
      left-over autofs4 stubs"), you get
      
          systemd[1]: Failed to insert module 'autofs4': No such file or directory
      
      in the system logs, and a lack of module loading.  All this despite the
      fact that we had very clearly marked 'autofs4' as an alias for this
      module.
      
      What's so ridiculous about this is that literally everything else does
      the module alias handling correctly, including really old versions of
      systemd (that just used 'modprobe' to do this), and even all the other
      systemd module loading code.
      
      Only that special systemd early module load code is broken, hardcoding
      the module names for not just 'autofs4', but also "ipv6", "unix",
      "ip_tables" and "virtio_rng".  Very annoying.
      
      Instead of creating an _additional_ separate compatibility 'autofs4'
      module, just rely on the fact that everybody else gets this right, and
      just call the module 'autofs4' for compatibility reasons, with 'autofs'
      as the alias name.
      
      That will allow the systemd people to fix their bugs, adding the proper
      alias handling, and maybe even fix the name of the module to be just
      "autofs" (so that they can _test_ the alias handling).  And eventually,
      we can revert this silly compatibility hack.
      
      See also
      
          https://github.com/systemd/systemd/issues/9501
          https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=902946
      
      for the systemd bug reports upstream and in the Debian bug tracker
      respectively.
      
      Fixes: a2225d93 ("autofs: remove left-over autofs4 stubs")
      Reported-by: default avatarBen Hutchings <ben@decadent.org.uk>
      Reported-by: default avatarMichael Biebl <biebl@debian.org>
      Cc: Ian Kent <raven@themaw.net>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d02d21ea
    • Linus Torvalds's avatar
      Merge tag 'acpi-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 06c85639
      Linus Torvalds authored
      Pull ACPI fixes from Rafael Wysocki:
       "These fix a recent ACPICA regression, fix a battery driver regression
        introduced during the 4.17 cycle and fix up the recently added support
        for the PPTT ACPI table.
      
        Specifics:
      
         - Revert part of a recent ACPICA regression fix that added leading
           newlines to ACPICA error messages and made the kernel log look
           broken (Rafael Wysocki).
      
         - Fix an ACPI battery driver regression introduced during the 4.17
           cycle due to incorrect error handling that made Thinkpad 13 laptops
           crash on boot (Jouke Witteveen).
      
         - Fix up the recently added PPTT ACPI table support by covering the
           case when a PPTT structure represents a processors group correctly
           (Sudeep Holla)"
      
      * tag 'acpi-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI / battery: Safe unregistering of hooks
        ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID is set
        ACPICA: Drop leading newlines from error messages
      06c85639
    • Linus Torvalds's avatar
      Merge tag 'pm-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 90dc8b65
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "These fix a PCI power management regression introduced during the 4.17
        cycle and fix up the recently added support for devices in multiple
        power domains.
      
        Specifics:
      
         - Resume parallel PCI (non-PCIe) bridges on suspend-to-RAM (ACP S3)
           to avoid confusing the platform firmware which started to happen
           after a core power management regression fix that went in during
           the 4.17 cycle (Rafael Wysocki).
      
         - Fix up the recently added support for devices in multiple power
           domains by avoiding to power up the entire domain unnecessarily
           when attaching a device to it (Ulf Hansson)"
      
      * tag 'pm-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        PM / Domains: Don't power on at attach for the multi PM domain case
        PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
      90dc8b65
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-4.18-rc4' of... · b19b9282
      Linus Torvalds authored
      Merge tag 'riscv-for-linus-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
      
      Pull RISC-V fixes from Palmer Dabbelt:
       "This contains a handful of fixes for the RISC-V port:
      
         - A fix to R_RISCV_ADD32/R_RISCV_SUB32 relocations that allows
           modules that use these to load correctly.
      
         - The removal of of_platform_populate(), which is obselete.
      
         - The removal of irq-riscv-intc.h, which is obselete.
      
         - A fix to PTRACE_SETREGSET.
      
         - Fixes that allow the RV32I kernel to build (at least for Zong, I've
           got another patch on the mailing list that's necessary on my setup :)).
      
        I've just given these a defconfig build test"
      
      * tag 'riscv-for-linus-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
        RISC-V: Fix PTRACE_SETREGSET bug.
        RISC-V: Don't include irq-riscv-intc.h
        riscv: remove unnecessary of_platform_populate call
        RISC-V: fix R_RISCV_ADD32/R_RISCV_SUB32 relocations
        RISC-V: Change variable type for 32-bit compatible
        RISC-V: Add definiion of extract symbol's index and type for 32-bit
        RISC-V: Select GENERIC_UCMPDI2 on RV32I
        RISC-V: Add conditional macro for zone of DMA32
      b19b9282
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu · 760885f2
      Linus Torvalds authored
      Pull m68knommu fix from Greg Ungerer:
       "A single fix for breakage introduced in this merge window"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
        m68k: fix "bad page state" oops on ColdFire boot
      760885f2
    • Mikita Lipski's avatar
      drm/amd/display: add a check for display depth validity · 413ff0b9
      Mikita Lipski authored
      [why]
      HDMI 2.0 fails to validate 4K@60 timing with 10 bpc
      [how]
      Adding a helper function that would verify if the display depth
      assigned would pass a bandwidth validation.
      Drop the display depth by one level till calculated pixel clk
      is lower than maximum TMDS clk.
      
      Bugzilla: https://bugs.freedesktop.org/106959Tested-by: default avatarMike Lothian <mike@fireburn.co.uk>
      Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
      Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      413ff0b9
    • Mikita Lipski's avatar
      drm/amd/display: adding ycbcr420 pixel encoding for hdmi · a6311be8
      Mikita Lipski authored
      [why]
      HDMI EDID's VSDB contains spectial timings for specifically
      YCbCr 4:2:0 colour space. In those cases we need to verify
      if the mode provided is one of the special ones has to use
      YCbCr 4:2:0 pixel encoding for display info.
      [how]
      Verify if the mode is using specific ycbcr420 colour space with
      the help of DRM helper function and assign the mode to use
      ycbcr420 pixel encoding.
      Tested-by: default avatarMike Lothian <mike@fireburn.co.uk>
      Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
      Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      a6311be8
    • Rafael J. Wysocki's avatar
      Merge branches 'acpi-tables' and 'acpica' · df958569
      Rafael J. Wysocki authored
      Merge ACPICA regression fix and a fix for the recently added PPTT
      support.
      
      * acpi-tables:
        ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID is set
      
      * acpica:
        ACPICA: Drop leading newlines from error messages
      df958569
    • Rafael J. Wysocki's avatar
      Merge branch 'pm-pci' · 88b96088
      Rafael J. Wysocki authored
      Merge a PCI power management regression fix.
      
      * pm-pci:
        PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
      88b96088
    • Mikulas Patocka's avatar
      drm/udl: fix display corruption of the last line · 99ec9e77
      Mikulas Patocka authored
      The displaylink hardware has such a peculiarity that it doesn't render a
      command until next command is received. This produces occasional
      corruption, such as when setting 22x11 font on the console, only the first
      line of the cursor will be blinking if the cursor is located at some
      specific columns.
      
      When we end up with a repeating pixel, the driver has a bug that it leaves
      one uninitialized byte after the command (and this byte is enough to flush
      the command and render it - thus it fixes the screen corruption), however
      whe we end up with a non-repeating pixel, there is no byte appended and
      this results in temporary screen corruption.
      
      This patch fixes the screen corruption by always appending a byte 0xAF at
      the end of URB. It also removes the uninitialized byte.
      Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      99ec9e77
  3. 04 Jul, 2018 21 commits
  4. 03 Jul, 2018 1 commit
    • Changbin Du's avatar
      tracing: Fix missing return symbol in function_graph output · 1fe4293f
      Changbin Du authored
      The function_graph tracer does not show the interrupt return marker for the
      leaf entry. On leaf entries, we see an unbalanced interrupt marker (the
      interrupt was entered, but nevern left).
      
      Before:
       1)               |  SyS_write() {
       1)               |    __fdget_pos() {
       1)   0.061 us    |      __fget_light();
       1)   0.289 us    |    }
       1)               |    vfs_write() {
       1)   0.049 us    |      rw_verify_area();
       1) + 15.424 us   |      __vfs_write();
       1)   ==========> |
       1)   6.003 us    |      smp_apic_timer_interrupt();
       1)   0.055 us    |      __fsnotify_parent();
       1)   0.073 us    |      fsnotify();
       1) + 23.665 us   |    }
       1) + 24.501 us   |  }
      
      After:
       0)               |  SyS_write() {
       0)               |    __fdget_pos() {
       0)   0.052 us    |      __fget_light();
       0)   0.328 us    |    }
       0)               |    vfs_write() {
       0)   0.057 us    |      rw_verify_area();
       0)               |      __vfs_write() {
       0)   ==========> |
       0)   8.548 us    |      smp_apic_timer_interrupt();
       0)   <========== |
       0) + 36.507 us   |      } /* __vfs_write */
       0)   0.049 us    |      __fsnotify_parent();
       0)   0.066 us    |      fsnotify();
       0) + 50.064 us   |    }
       0) + 50.952 us   |  }
      
      Link: http://lkml.kernel.org/r/1517413729-20411-1-git-send-email-changbin.du@intel.com
      
      Cc: stable@vger.kernel.org
      Fixes: f8b755ac ("tracing/function-graph-tracer: Output arrows signal on hardirq call/return")
      Signed-off-by: default avatarChangbin Du <changbin.du@intel.com>
      Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
      1fe4293f