1. 04 Jun, 2015 5 commits
    • Stephen Smalley's avatar
      selinux: enable genfscon labeling for sysfs and pstore files · 8e014720
      Stephen Smalley authored
      Support per-file labeling of sysfs and pstore files based on
      genfscon policy entries.  This is safe because the sysfs
      and pstore directory tree cannot be manipulated by userspace,
      except to unlink pstore entries.
      This provides an alternative method of assigning per-file labeling
      to sysfs or pstore files without needing to set the labels from
      userspace on each boot.  The advantages of this approach are that
      the labels are assigned as soon as the dentry is first instantiated
      and userspace does not need to walk the sysfs or pstore tree and
      set the labels on each boot.  The limitations of this approach are
      that the labels can only be assigned based on pathname prefix matching.
      You can initially assign labels using this mechanism and then change
      them at runtime via setxattr if allowed to do so by policy.
      Signed-off-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
      Suggested-by: default avatarDominick Grift <dac.override@gmail.com>
      Acked-by: default avatarJeff Vander Stoep <jeffv@google.com>
      Signed-off-by: default avatarPaul Moore <pmoore@redhat.com>
      8e014720
    • Stephen Smalley's avatar
      selinux: enable per-file labeling for debugfs files. · 134509d5
      Stephen Smalley authored
      Add support for per-file labeling of debugfs files so that
      we can distinguish them in policy.  This is particularly
      important in Android where certain debugfs files have to be writable
      by apps and therefore the debugfs directory tree can be read and
      searched by all.
      
      Since debugfs is entirely kernel-generated, the directory tree is
      immutable by userspace, and the inodes are pinned in memory, we can
      simply use the same approach as with proc and label the inodes from
      policy based on pathname from the root of the debugfs filesystem.
      Generalize the existing labeling support used for proc and reuse it
      for debugfs too.
      Signed-off-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
      Signed-off-by: default avatarPaul Moore <pmoore@redhat.com>
      134509d5
    • Stephen Smalley's avatar
      selinux: update netlink socket classes · 6c6d2e9b
      Stephen Smalley authored
      Update the set of SELinux netlink socket class definitions to match
      the set of netlink protocols implemented by the kernel.  The
      ip_queue implementation for the NETLINK_FIREWALL and NETLINK_IP6_FW protocols
      was removed in d16cf20e, so we can remove
      the corresponding class definitions as this is dead code.  Add new
      classes for NETLINK_ISCSI, NETLINK_FIB_LOOKUP, NETLINK_CONNECTOR,
      NETLINK_NETFILTER, NETLINK_GENERIC, NETLINK_SCSITRANSPORT, NETLINK_RDMA,
      and NETLINK_CRYPTO so that we can distinguish among sockets created
      for each of these protocols.  This change does not define the finer-grained
      nlsmsg_read/write permissions or map specific nlmsg_type values to those
      permissions in the SELinux nlmsgtab; if finer-grained control of these
      sockets is desired/required, that can be added as a follow-on change.
      We do not define a SELinux class for NETLINK_ECRYPTFS as the implementation
      was removed in 624ae528.
      Signed-off-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
      Signed-off-by: default avatarPaul Moore <pmoore@redhat.com>
      6c6d2e9b
    • Oleg Nesterov's avatar
      signals: don't abuse __flush_signals() in selinux_bprm_committed_creds() · 9e7c8f8c
      Oleg Nesterov authored
      selinux_bprm_committed_creds()->__flush_signals() is not right, we
      shouldn't clear TIF_SIGPENDING unconditionally. There can be other
      reasons for signal_pending(): freezing(), JOBCTL_PENDING_MASK, and
      potentially more.
      
      Also change this code to check fatal_signal_pending() rather than
      SIGNAL_GROUP_EXIT, it looks a bit better.
      
      Now we can kill __flush_signals() before it finds another buggy user.
      
      Note: this code looks racy, we can flush a signal which was sent after
      the task SID has been updated.
      Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
      Signed-off-by: default avatarPaul Moore <pmoore@redhat.com>
      9e7c8f8c
    • Marek Milkovic's avatar
      selinux: Print 'sclass' as string when unrecognized netlink message occurs · cded3fff
      Marek Milkovic authored
      This prints the 'sclass' field as string instead of index in unrecognized netlink message.
      The textual representation makes it easier to distinguish the right class.
      Signed-off-by: default avatarMarek Milkovic <mmilkovi@redhat.com>
      Acked-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
      [PM: 80-char width fixes]
      Signed-off-by: default avatarPaul Moore <pmoore@redhat.com>
      cded3fff
  2. 03 Jun, 2015 1 commit
  3. 02 Jun, 2015 2 commits
    • Rafal Krypa's avatar
      Smack: allow multiple labels in onlycap · c0d77c88
      Rafal Krypa authored
      Smack onlycap allows limiting of CAP_MAC_ADMIN and CAP_MAC_OVERRIDE to
      processes running with the configured label. But having single privileged
      label is not enough in some real use cases. On a complex system like Tizen,
      there maybe few programs that need to configure Smack policy in run-time
      and running them all with a single label is not always practical.
      This patch extends onlycap feature for multiple labels. They are configured
      in the same smackfs "onlycap" interface, separated by spaces.
      Signed-off-by: default avatarRafal Krypa <r.krypa@samsung.com>
      c0d77c88
    • Rafal Krypa's avatar
      Smack: fix seq operations in smackfs · 01fa8474
      Rafal Krypa authored
      Use proper RCU functions and read locking in smackfs seq_operations.
      
      Smack gets away with not using proper RCU functions in smackfs, because
      it never removes entries from these lists. But now one list will be
      needed (with interface in smackfs) that will have both elements added and
      removed to it.
      This change will also help any future changes implementing removal of
      unneeded entries from other Smack lists.
      
      The patch also fixes handling of pos argument in smk_seq_start and
      smk_seq_next. This fixes a bug in case when smackfs is read with a small
      buffer:
      
      Kernel panic - not syncing: Kernel mode fault at addr 0xfa0000011b
      CPU: 0 PID: 1292 Comm: dd Not tainted 4.1.0-rc1-00012-g98179b8 #13
      Stack:
       00000003 0000000d 7ff39e48 7f69fd00
       7ff39ce0 601ae4b0 7ff39d50 600e587b
       00000010 6039f690 7f69fd40 00612003
      Call Trace:
       [<601ae4b0>] load2_seq_show+0x19/0x1d
       [<600e587b>] seq_read+0x168/0x331
       [<600c5943>] __vfs_read+0x21/0x101
       [<601a595e>] ? security_file_permission+0xf8/0x105
       [<600c5ec6>] ? rw_verify_area+0x86/0xe2
       [<600c5fc3>] vfs_read+0xa1/0x14c
       [<600c68e2>] SyS_read+0x57/0xa0
       [<6001da60>] handle_syscall+0x60/0x80
       [<6003087d>] userspace+0x442/0x548
       [<6001aa77>] ? interrupt_end+0x0/0x80
       [<6001daae>] ? copy_chunk_to_user+0x0/0x2b
       [<6002cb6b>] ? save_registers+0x1f/0x39
       [<60032ef7>] ? arch_prctl+0xf5/0x170
       [<6001a92d>] fork_handler+0x85/0x87
      Signed-off-by: default avatarRafal Krypa <r.krypa@samsung.com>
      01fa8474
  4. 21 May, 2015 10 commits
  5. 15 May, 2015 2 commits
    • Lukasz Pawelczyk's avatar
      smack: pass error code through pointers · e774ad68
      Lukasz Pawelczyk authored
      This patch makes the following functions to use ERR_PTR() and related
      macros to pass the appropriate error code through returned pointers:
      
      smk_parse_smack()
      smk_import_entry()
      smk_fetch()
      
      It also makes all the other functions that use them to handle the
      error cases properly. This ways correct error codes from places
      where they happened can be propagated to the user space if necessary.
      
      Doing this it fixes a bug in onlycap and unconfined files
      handling. Previously their content was cleared on any error from
      smk_import_entry/smk_parse_smack, be it EINVAL (as originally intended)
      or ENOMEM. Right now it only reacts on EINVAL passing other codes
      properly to userspace.
      
      Comments have been updated accordingly.
      Signed-off-by: default avatarLukasz Pawelczyk <l.pawelczyk@samsung.com>
      e774ad68
    • Seung-Woo Kim's avatar
      Smack: ignore private inode for smack_file_receive · 9777582e
      Seung-Woo Kim authored
      The dmabuf fd can be shared between processes via unix domain
      socket. The file of dmabuf fd is came from anon_inode. The inode
      has no set and get xattr operations, so it can not be shared
      between processes with smack. This patch fixes just to ignore
      private inode including anon_inode for smack_file_receive.
      Signed-off-by: default avatarSeung-Woo Kim <sw0312.kim@samsung.com>
      9777582e
  6. 13 May, 2015 2 commits
  7. 12 May, 2015 7 commits
  8. 27 Apr, 2015 9 commits
    • Linus Torvalds's avatar
      Linux 4.1-rc1 · b787f68c
      Linus Torvalds authored
      b787f68c
    • Andy Lutomirski's avatar
      x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue · 61f01dd9
      Andy Lutomirski authored
      AMD CPUs don't reinitialize the SS descriptor on SYSRET, so SYSRET with
      SS == 0 results in an invalid usermode state in which SS is apparently
      equal to __USER_DS but causes #SS if used.
      
      Work around the issue by setting SS to __KERNEL_DS __switch_to, thus
      ensuring that SYSRET never happens with SS set to NULL.
      
      This was exposed by a recent vDSO cleanup.
      
      Fixes: e7d6eefa x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
      Signed-off-by: default avatarAndy Lutomirski <luto@kernel.org>
      Cc: Peter Anvin <hpa@zytor.com>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Denys Vlasenko <vda.linux@googlemail.com>
      Cc: Brian Gerst <brgerst@gmail.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      61f01dd9
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 1190944f
      Linus Torvalds authored
      Pull intel drm fixes from Dave Airlie.
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/i915: vlv: fix save/restore of GFX_MAX_REQ_COUNT reg
        drm/i915: Workaround to avoid lite restore with HEAD==TAIL
        drm/i915: cope with large i2c transfers
      1190944f
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/intel-iommu · 9f86262d
      Linus Torvalds authored
      Pull intel iommu updates from David Woodhouse:
       "This lays a little of the groundwork for upcoming Shared Virtual
        Memory support — fixing some bogus #defines for capability bits and
        adding the new ones, and starting to use the new wider page tables
        where we can, in anticipation of actually filling in the new fields
        therein.
      
        It also allows graphics devices to be assigned to VM guests again.
        This got broken in 3.17 by disallowing assignment of RMRR-afflicted
        devices.  Like USB, we do understand why there's an RMRR for graphics
        devices — and unlike USB, it's actually sane.  So we can make an
        exception for graphics devices, just as we do USB controllers.
      
        Finally, tone down the warning about the X2APIC_OPT_OUT bit, due to
        persistent requests.  X2APIC_OPT_OUT was added to the spec as a nasty
        hack to allow broken BIOSes to forbid us from using X2APIC when they
        do stupid and invasive things and would break if we did.
      
        Someone noticed that since Windows doesn't have full IOMMU support for
        DMA protection, setting the X2APIC_OPT_OUT bit made Windows avoid
        initialising the IOMMU on the graphics unit altogether.
      
        This means that it would be available for use in "driver mode", where
        the IOMMU registers are made available through a BAR of the graphics
        device and the graphics driver can do SVM all for itself.
      
        So they started setting the X2APIC_OPT_OUT bit on *all* platforms with
        SVM capabilities.  And even the platforms which *might*, if the
        planets had been aligned correctly, possibly have had SVM capability
        but which in practice actually don't"
      
      * git://git.infradead.org/intel-iommu:
        iommu/vt-d: support extended root and context entries
        iommu/vt-d: Add new extended capabilities from v2.3 VT-d specification
        iommu/vt-d: Allow RMRR on graphics devices too
        iommu/vt-d: Print x2apic opt out info instead of printing a warning
        iommu/vt-d: kill bogus ecap_niotlb_iunits()
      9f86262d
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · 85f2901b
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
       "This has a mixture of merge window cleanups and bugfixes"
      
      * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        i2c: st: add include for pinctrl
        i2c: mux: use proper dev when removing "channel-X" symlinks
        i2c: digicolor: remove duplicate include
        i2c: Mark adapter devices with pm_runtime_no_callbacks
        i2c: pca-platform: fix broken email address
        i2c: mxs: fix broken email address
        i2c: rk3x: report number of messages transmitted
      85f2901b
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · f583381f
      Linus Torvalds authored
      Pull btrfs fixes from Chris Mason:
       "Filipe hit two problems in my block group cache patches.  We finalized
        the fixes last week and ran through more tests"
      
      * 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: prevent list corruption during free space cache processing
        Btrfs: fix inode cache writeout
      f583381f
    • Dave Airlie's avatar
      Merge tag 'drm-intel-next-fixes-2015-04-25' of... · 59fd7e4b
      Dave Airlie authored
      Merge tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm-intel into drm-fixes
      
      three fixes for i915.
      
      * tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm-intel:
        drm/i915: vlv: fix save/restore of GFX_MAX_REQ_COUNT reg
        drm/i915: Workaround to avoid lite restore with HEAD==TAIL
        drm/i915: cope with large i2c transfers
      59fd7e4b
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 59953fba
      Linus Torvalds authored
      Pull NFS client updates from Trond Myklebust:
       "Another set of mainly bugfixes and a couple of cleanups.  No new
        functionality in this round.
      
        Highlights include:
      
        Stable patches:
         - Fix a regression in /proc/self/mountstats
         - Fix the pNFS flexfiles O_DIRECT support
         - Fix high load average due to callback thread sleeping
      
        Bugfixes:
         - Various patches to fix the pNFS layoutcommit support
         - Do not cache pNFS deviceids unless server notifications are enabled
         - Fix a SUNRPC transport reconnection regression
         - make debugfs file creation failure non-fatal in SUNRPC
         - Another fix for circular directory warnings on NFSv4 "junctioned"
           mountpoints
         - Fix locking around NFSv4.2 fallocate() support
         - Truncating NFSv4 file opens should also sync O_DIRECT writes
         - Prevent infinite loop in rpcrdma_ep_create()
      
        Features:
         - Various improvements to the RDMA transport code's handling of
           memory registration
         - Various code cleanups"
      
      * tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (55 commits)
        fs/nfs: fix new compiler warning about boolean in switch
        nfs: Remove unneeded casts in nfs
        NFS: Don't attempt to decode missing directory entries
        Revert "nfs: replace nfs_add_stats with nfs_inc_stats when add one"
        NFS: Rename idmap.c to nfs4idmap.c
        NFS: Move nfs_idmap.h into fs/nfs/
        NFS: Remove CONFIG_NFS_V4 checks from nfs_idmap.h
        NFS: Add a stub for GETDEVICELIST
        nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes
        nfs: fix DIO good bytes calculation
        nfs: Fetch MOUNTED_ON_FILEID when updating an inode
        sunrpc: make debugfs file creation failure non-fatal
        nfs: fix high load average due to callback thread sleeping
        NFS: Reduce time spent holding the i_mutex during fallocate()
        NFS: Don't zap caches on fallocate()
        xprtrdma: Make rpcrdma_{un}map_one() into inline functions
        xprtrdma: Handle non-SEND completions via a callout
        xprtrdma: Add "open" memreg op
        xprtrdma: Add "destroy MRs" memreg op
        xprtrdma: Add "reset MRs" memreg op
        ...
      59953fba
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 9ec3a646
      Linus Torvalds authored
      Pull fourth vfs update from Al Viro:
       "d_inode() annotations from David Howells (sat in for-next since before
        the beginning of merge window) + four assorted fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        RCU pathwalk breakage when running into a symlink overmounting something
        fix I_DIO_WAKEUP definition
        direct-io: only inc/dec inode->i_dio_count for file systems
        fs/9p: fix readdir()
        VFS: assorted d_backing_inode() annotations
        VFS: fs/inode.c helpers: d_inode() annotations
        VFS: fs/cachefiles: d_backing_inode() annotations
        VFS: fs library helpers: d_inode() annotations
        VFS: assorted weird filesystems: d_inode() annotations
        VFS: normal filesystems (and lustre): d_inode() annotations
        VFS: security/: d_inode() annotations
        VFS: security/: d_backing_inode() annotations
        VFS: net/: d_inode() annotations
        VFS: net/unix: d_backing_inode() annotations
        VFS: kernel/: d_inode() annotations
        VFS: audit: d_backing_inode() annotations
        VFS: Fix up some ->d_inode accesses in the chelsio driver
        VFS: Cachefiles should perform fs modifications on the top layer only
        VFS: AF_UNIX sockets should call mknod on the top layer only
      9ec3a646
  9. 26 Apr, 2015 2 commits
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · c8b3fd0c
      Linus Torvalds authored
      Pull more power management and ACPI updates from Rafael Wysocki:
       "These are fixes mostly (intel_pstate, ACPI core, ACPI EC driver,
        cpupower tool), a new CPU ID for the Intel RAPL driver and one
        intel_pstate driver improvement that didn't make it to my previous
        pull requests due to timing.
      
        Specifics:
      
         - Fix a build warning in the intel_pstate driver showing up in
           non-SMP builds (Borislav Petkov)
      
         - Change one of the intel_pstate's P-state selection parameters for
           Baytrail and Cherrytrail CPUs to significantly improve performance
           at the cost of a small increase in energy consumption (Kristen
           Carlson Accardi)
      
         - Fix a NULL pointer dereference in the ACPI EC driver due to an
           unsafe list walk in the query handler removal routine (Chris
           Bainbridge)
      
         - Get rid of a false-positive lockdep warning in the ACPI container
           hot-remove code (Rafael J Wysocki)
      
         - Prevent the ACPI device enumeration code from creating device
           objects of a wrong type in some cases (Rafael J Wysocki)
      
         - Add Skylake processors support to the Intel RAPL power capping
           driver (Brian Bian)
      
         - Drop the stale MAINTAINERS entry for the ACPI dock driver that is
           regarded as part of the ACPI core and maintained along with it now
           (Chao Yu)
      
         - Fix cpupower tool breakage caused by a library API change in libpci
           3.3.0 (Lucas Stach)"
      
      * tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI / scan: Add a scan handler for PRP0001
        ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()
        ACPI / EC: fix NULL pointer dereference in acpi_ec_remove_query_handler()
        MAINTAINERS: remove maintainship entry of docking station driver
        powercap / RAPL: Add support for Intel Skylake processors
        cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
        intel_pstate: Change the setpoint for Atom params
        cpupower: fix breakage from libpci API change
      c8b3fd0c
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · d89b3e19
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
       "This push fixes a build problem with img-hash under non-standard
        configurations and a serious regression with sha512_ssse3 which can
        lead to boot failures"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: img-hash - CRYPTO_DEV_IMGTEC_HASH should depend on HAS_DMA
        crypto: x86/sha512_ssse3 - fixup for asm function prototype change
      d89b3e19