1. Apr 01, 2013
  2. Mar 26, 2013
  3. Mar 20, 2013
    • Igor Zhbanov's avatar
      Fix NULL pointer dereference in smack_inode_unlink() and smack_inode_rmdir() · cdb56b60
      Igor Zhbanov authored
      
      
      This patch fixes kernel Oops because of wrong common_audit_data type
      in smack_inode_unlink() and smack_inode_rmdir().
      
      When SMACK security module is enabled and SMACK logging is on (/smack/logging
      is not zero) and you try to delete the file which
      1) you cannot delete due to SMACK rules and logging of failures is on
      or
      2) you can delete and logging of success is on,
      
      you will see following:
      
      	Unable to handle kernel NULL pointer dereference at virtual address 000002d7
      
      	[<...>] (strlen+0x0/0x28)
      	[<...>] (audit_log_untrustedstring+0x14/0x28)
      	[<...>] (common_lsm_audit+0x108/0x6ac)
      	[<...>] (smack_log+0xc4/0xe4)
      	[<...>] (smk_curacc+0x80/0x10c)
      	[<...>] (smack_inode_unlink+0x74/0x80)
      	[<...>] (security_inode_unlink+0x2c/0x30)
      	[<...>] (vfs_unlink+0x7c/0x100)
      	[<...>] (do_unlinkat+0x144/0x16c)
      
      The function smack_inode_unlink() (and smack_inode_rmdir()) need
      to log two structures of different types. First of all it does:
      
      	smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
      	smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
      
      This will set common audit data type to LSM_AUDIT_DATA_DENTRY
      and store dentry for auditing (by function smk_curacc(), which in turn calls
      dump_common_audit_data(), which is actually uses provided data and logs it).
      
      	/*
      	 * You need write access to the thing you're unlinking
      	 */
      	rc = smk_curacc(smk_of_inode(ip), MAY_WRITE, &ad);
      	if (rc == 0) {
      		/*
      		 * You also need write access to the containing directory
      		 */
      
      Then this function wants to log anoter data:
      
      		smk_ad_setfield_u_fs_path_dentry(&ad, NULL);
      		smk_ad_setfield_u_fs_inode(&ad, dir);
      
      The function sets inode field, but don't change common_audit_data type.
      
      		rc = smk_curacc(smk_of_inode(dir), MAY_WRITE, &ad);
      	}
      
      So the dump_common_audit() function incorrectly interprets inode structure
      as dentry, and Oops will happen.
      
      This patch reinitializes common_audit_data structures with correct type.
      Also I removed unneeded
      	smk_ad_setfield_u_fs_path_dentry(&ad, NULL);
      initialization, because both dentry and inode pointers are stored
      in the same union.
      
      Signed-off-by: default avatarIgor Zhbanov <i.zhbanov@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      cdb56b60
    • Rafal Krypa's avatar
      Smack: add support for modification of existing rules · e05b6f98
      Rafal Krypa authored
      Rule modifications are enabled via /smack/change-rule. Format is as follows:
      "Subject Object rwaxt rwaxt"
      
      First two strings are subject and object labels up to 255 characters.
      Third string contains permissions to enable.
      Fourth string contains permissions to disable.
      
      All unmentioned permissions will be left unchanged.
      If no rule previously existed, it will be created.
      
      Targeted for git://git.gitorious.org/smack-next/kernel.git
      
      
      
      Signed-off-by: default avatarRafal Krypa <r.krypa@samsung.com>
      e05b6f98
    • Jarkko Sakkinen's avatar
      smack: SMACK_MAGIC to include/uapi/linux/magic.h · cee7e443
      Jarkko Sakkinen authored
      
      
      SMACK_MAGIC moved to a proper place for easy user space access
      (i.e. libsmack).
      
      Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@iki.fi>
      cee7e443
    • Rafal Krypa's avatar
      Smack: add missing support for transmute bit in smack_str_from_perm() · a87d79ad
      Rafal Krypa authored
      This fixes audit logs for granting or denial of permissions to show
      information about transmute bit.
      
      Targeted for git://git.gitorious.org/smack-next/kernel.git
      
      
      
      Signed-off-by: default avatarRafal Krypa <r.krypa@samsung.com>
      a87d79ad
    • Rafal Krypa's avatar
      Smack: prevent revoke-subject from failing when unseen label is written to it · d15d9fad
      Rafal Krypa authored
      Special file /smack/revoke-subject will silently accept labels that are not
      present on the subject label list. Nothing has to be done for such labels,
      as there are no rules for them to revoke.
      
      Targeted for git://git.gitorious.org/smack-next/kernel.git
      
      
      
      Signed-off-by: default avatarRafal Krypa <r.krypa@samsung.com>
      d15d9fad
  4. Mar 18, 2013
  5. Mar 11, 2013
  6. Mar 10, 2013
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace · 72932611
      Linus Torvalds authored
      Pull namespace bugfixes from Eric Biederman:
       "This is three simple fixes against 3.9-rc1.  I have tested each of
        these fixes and verified they work correctly.
      
        The userns oops in key_change_session_keyring and the BUG_ON triggered
        by proc_ns_follow_link were found by Dave Jones.
      
        I am including the enhancement for mount to only trigger requests of
        filesystem modules here instead of delaying this for the 3.10 merge
        window because it is both trivial and the kind of change that tends to
        bit-rot if left untouched for two months."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
        proc: Use nd_jump_link in proc_ns_follow_link
        fs: Limit sys_mount to only request filesystem modules (Part 2).
        fs: Limit sys_mount to only request filesystem modules.
        userns: Stop oopsing in key_change_session_keyring
      72932611
    • Linus Torvalds's avatar
      Atmel MXT touchscreen: increase reset timeouts · 8343bce1
      Linus Torvalds authored
      
      
      There is a more complete atmel patch-series out by Nick Dyer that fixes
      this and other things, but in the meantime this is the minimal thing to
      get the touchscreen going on (at least my) Pixel Chromebook.
      
      Not that I want my dirty fingers near that beautiful screen, but it
      seems that a non-initialized touchscreen will also end up being a
      constant wakeup source, so you have to disable it to go to sleep.  And
      it's easier to just fix the initialization sequence.
      
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8343bce1
  7. Mar 09, 2013
  8. Mar 08, 2013
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 47b3bc90
      Linus Torvalds authored
      Pull x86 fixes from Peter Anvin:
       "Several boot fixes (MacBook, legacy EFI bootloaders), another
        please-don't-brick fix, and some minor stuff."
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86: Do not try to sync identity map for non-mapped pages
        x86, doc: Be explicit about what the x86 struct boot_params requires
        x86: Don't clear efi_info even if the sentinel hits
        x86, mm: Make sure to find a 2M free block for the first mapped area
        x86: Fix 32-bit *_cpu_data initializers
        efivarfs: return accurate error code in efivarfs_fill_super()
        efivars: efivarfs_valid_name() should handle pstore syntax
        efi: be more paranoid about available space when creating variables
        iommu, x86: Add DMA remap fault reason
        x86, smpboot: Remove unused variable
      47b3bc90
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · af2841cd
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Misc radeon, nouveau, mgag200 and intel fixes.
      
        The intel fixes should contain the fix for the touchpad on the
        Chromebook - hey I'm an input maintainer now!"
      
      Hate to pee on your parade, Dave, but I don't think being an input
      maintainer is necessarily something to strive for..
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (25 commits)
        drm/tegra: drop "select DRM_HDMI"
        drm: Documentation typo fixes
        drm/mgag200: Bug fix: Renesas board now selects native resolution.
        drm/mgag200: Reject modes that are too big for VRAM
        drm/mgag200: 'fbdev_list' in 'struct mga_fbdev' is not used
        drm/radeon: don't check mipmap alignment if MIP_ADDRESS is FMASK
        drm/radeon: skip MC reset as it's probably not hung
        drm/radeon: add primary dac adj quirk for R200 board
        drm/radeon: don't set hpd, afmt interrupts when interrupts are disabled
        drm/i915: Turn off hsync and vsync on ADPA when disabling crt
        drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits
        drm/i915: also disable south interrupts when handling them
        drm/i915: enable irqs earlier when resuming
        drm/i915: Increase the RC6p threshold.
        DRM/i915: On G45 enable cursor plane briefly after enabling the display plane.
        drm/nv50-: prevent some races between modesetting and page flipping
        drm/nouveau/i2c: drop parent refcount when creating ports
        drm/nv84: fix regression in page flipping
        drm/nouveau: Fix typo in init_idx_addr_latched().
        drm/nouveau: Disable AGP on PowerPC again.
        ...
      af2841cd
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-3.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · c89b148f
      Linus Torvalds authored
      Pull ACPI and power management fixes from Rafael J Wysocki:
      
       - Two fixes for the new intel_pstate driver from Dirk Brandewie.
      
       - Fix for incorrect usage of the .find_bridge() callback from struct
         acpi_bus_type in the USB core and subsequent removal of that callback
         from Rafael J Wysocki.
      
       - ACPI processor driver cleanups from Chen Gang and Syam Sidhardhan.
      
       - ACPI initialization and error messages fix from Joe Perches.
      
       - Operating Performance Points documentation improvement from Nishanth
         Menon.
      
       - Fixes for memory leaks and potential concurrency issues and sysfs
        attributes leaks during device removal in the core device PM QoS code
        from Rafael J Wysocki.
      
       - Calxeda Highbank cpufreq driver simplification from Emilio López.
      
       - cpufreq comment cleanup from Namhyung Kim.
      
       - Fix for a section mismatch in Calxeda Highbank interprocessor
         communication code from Mark Langsdorf (this is not a PM ...
      c89b148f
    • Paul Bolle's avatar
      drm/tegra: drop "select DRM_HDMI" · 36c1813b
      Paul Bolle authored
      Commit ac24c220
      
       ("drm/tegra: Use generic
      HDMI infoframe helpers") added "select DRM_HDMI" to the DRM_TEGRA
      Kconfig entry. But there is no Kconfig symbol named DRM_HDMI. The select
      statement for that symbol is a nop. Drop it.
      
      What was needed to use HDMI functionality was to select HDMI (which this
      entry already did through depending on DRM) and to include linux/hdmi.h
      (which this commit also did).
      
      Signed-off-by: default avatarPaul Bolle <pebolle@tiscali.nl>
      Acked-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      36c1813b