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Message-Id: <1476959131-6153-1-git-send-email-elena.reshetova@intel.com>
Date: Thu, 20 Oct 2016 13:25:18 +0300
From: Elena Reshetova <elena.reshetova@...el.com>
To: kernel-hardening@...ts.openwall.com
Cc: keescook@...omium.org,
Elena Reshetova <elena.reshetova@...el.com>
Subject: [RFC v2 PATCH 00/13] HARDENED_ATOMIC
Changes since RFC v1:
- documentation added: Documentation/security/hardened-atomic.txt
- percpu-refcount diversion from PaX/Grsecurity explained better
- arch. independent base has full functional coverage for atomic,
atomic-long and atomic64 types.
- arch. independent base is better structured and organized
- lkdtm: tests are now defined using macros
- x86 implementation added for missing functions
- fixed trap handling on x86 and overall reporting
- many small polishing and fixes
Open items:
- performance measurements: we are still waiting for numbers
- arch. independent implementation doesn't have coverage for
local_wrap_t type in cases when include/asm-generic/local.h
is not used (meaning architecture does provide its implementation
but does not yet provide *_wrap functions). We haven't yet
find a nice way of doing it in arch. independent definitions,
since some kernel code includes asm/local.h directly and we
are not sure where to place new definitions (new file under
inlcude/linux/local_wrap.h (to be inline with include/linux/
atomic.h) + definition of local_wrap_t to include/linux/types.h?)
Ideas and suggestions on this are very warlmy welcomed!
Compilation and testing results:
- CONFIG_HARDENED_ATOMIC=y, arch=x86_64 or x86_32, full x86 coverage implementation: compiles, lkdtm atomic tests PASS
- CONFIG_HARDENED_ATOMIC=n, arch=x86_64 or x86_32, full x86 coverage implementation: compiles, feature not enabled, so tests not run
- CONFIG_HARDENED_ATOMIC=n, arch=x86_64 or x86_32, with x86 hardening implementation removed
(simulate not implemented for arch. case): compile does not yet pass due to issues with local_wrap_t decribed above
This series brings the PaX/Grsecurity PAX_REFCOUNT
feature support to the upstream kernel. All credit for the
feature goes to the feature authors.
The name of the upstream feature is HARDENED_ATOMIC
and it is configured using CONFIG_HARDENED_ATOMIC and
HAVE_ARCH_HARDENED_ATOMIC.
This series only adds x86 support; other architectures are expected
to add similar support gradually.
More information about the feature can be found in the following
commit messages.
Special thank you goes to Kees Cook for pre-reviwing this feature
and all the valuable feedback he provided to us.
David Windsor (7):
kernel: identify wrapping atomic usage
mm: identify wrapping atomic usage
fs: identify wrapping atomic usage
net: identify wrapping atomic usage
security: identify wrapping atomic usage
drivers: identify wrapping atomic usage (part 1/2)
drivers: identify wrapping atomic usage (part 2/2)
Elena Reshetova (2):
Add architecture independent hardened atomic base
x86: implementation for HARDENED_ATOMIC
Hans Liljestrand (4):
percpu-refcount: leave atomic counter unprotected
net: atm: identify wrapping atomic usage
x86: identify wrapping atomic usage
lkdtm: add tests for atomic over-/underflow
Documentation/security/hardened-atomic.txt | 141 +++++++++
arch/x86/Kconfig | 1 +
arch/x86/include/asm/atomic.h | 323 ++++++++++++++++++++-
arch/x86/include/asm/atomic64_32.h | 201 ++++++++++++-
arch/x86/include/asm/atomic64_64.h | 228 ++++++++++++++-
arch/x86/include/asm/bitops.h | 8 +-
arch/x86/include/asm/cmpxchg.h | 39 +++
arch/x86/include/asm/hw_irq.h | 4 +-
arch/x86/include/asm/local.h | 89 +++++-
arch/x86/include/asm/preempt.h | 2 +-
arch/x86/include/asm/rmwcc.h | 82 +++++-
arch/x86/include/asm/rwsem.h | 50 ++++
arch/x86/kernel/apic/apic.c | 2 +-
arch/x86/kernel/apic/io_apic.c | 4 +-
arch/x86/kernel/cpu/mcheck/mce.c | 12 +-
arch/x86/kernel/i8259.c | 2 +-
arch/x86/kernel/irq.c | 8 +-
arch/x86/kernel/kgdb.c | 6 +-
arch/x86/kernel/pvclock.c | 8 +-
arch/x86/kernel/tboot.c | 8 +-
arch/x86/kernel/traps.c | 4 +
arch/x86/lib/atomic64_386_32.S | 135 +++++++++
arch/x86/lib/atomic64_cx8_32.S | 78 ++++-
arch/x86/mm/mmio-mod.c | 4 +-
drivers/acpi/apei/ghes.c | 4 +-
drivers/ata/libata-core.c | 5 +-
drivers/ata/libata-scsi.c | 2 +-
drivers/ata/libata.h | 2 +-
drivers/atm/adummy.c | 2 +-
drivers/atm/ambassador.c | 8 +-
drivers/atm/atmtcp.c | 14 +-
drivers/atm/eni.c | 10 +-
drivers/atm/firestream.c | 8 +-
drivers/atm/fore200e.c | 14 +-
drivers/atm/he.c | 18 +-
drivers/atm/horizon.c | 4 +-
drivers/atm/idt77252.c | 36 +--
drivers/atm/iphase.c | 34 +--
drivers/atm/lanai.c | 12 +-
drivers/atm/nicstar.c | 47 +--
drivers/atm/solos-pci.c | 4 +-
drivers/atm/suni.c | 5 +-
drivers/atm/uPD98402.c | 16 +-
drivers/atm/zatm.c | 7 +-
drivers/base/power/wakeup.c | 8 +-
drivers/block/drbd/drbd_bitmap.c | 2 +-
drivers/block/drbd/drbd_int.h | 9 +-
drivers/block/drbd/drbd_main.c | 15 +-
drivers/block/drbd/drbd_nl.c | 16 +-
drivers/block/drbd/drbd_receiver.c | 34 +--
drivers/block/drbd/drbd_worker.c | 8 +-
drivers/char/ipmi/ipmi_msghandler.c | 8 +-
drivers/char/ipmi/ipmi_si_intf.c | 8 +-
drivers/crypto/hifn_795x.c | 4 +-
drivers/edac/edac_device.c | 4 +-
drivers/edac/edac_pci.c | 4 +-
drivers/edac/edac_pci_sysfs.c | 20 +-
drivers/firewire/core-card.c | 4 +-
drivers/firmware/efi/cper.c | 8 +-
drivers/gpio/gpio-vr41xx.c | 2 +-
drivers/gpu/drm/i810/i810_drv.h | 4 +-
drivers/gpu/drm/mga/mga_drv.h | 4 +-
drivers/gpu/drm/mga/mga_irq.c | 9 +-
drivers/gpu/drm/qxl/qxl_cmd.c | 12 +-
drivers/gpu/drm/qxl/qxl_debugfs.c | 8 +-
drivers/gpu/drm/qxl/qxl_drv.h | 8 +-
drivers/gpu/drm/qxl/qxl_irq.c | 16 +-
drivers/gpu/drm/r128/r128_cce.c | 2 +-
drivers/gpu/drm/r128/r128_drv.h | 4 +-
drivers/gpu/drm/r128/r128_irq.c | 4 +-
drivers/gpu/drm/r128/r128_state.c | 4 +-
drivers/gpu/drm/via/via_drv.h | 4 +-
drivers/gpu/drm/via/via_irq.c | 18 +-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 2 +-
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 6 +-
drivers/gpu/drm/vmwgfx/vmwgfx_irq.c | 4 +-
drivers/gpu/drm/vmwgfx/vmwgfx_marker.c | 2 +-
drivers/hid/hid-core.c | 4 +-
drivers/hv/channel.c | 4 +-
drivers/hv/hv_balloon.c | 19 +-
drivers/hv/hyperv_vmbus.h | 2 +-
drivers/hwmon/sht15.c | 12 +-
drivers/infiniband/core/cm.c | 52 ++--
drivers/infiniband/core/fmr_pool.c | 23 +-
drivers/infiniband/hw/cxgb4/mem.c | 4 +-
drivers/infiniband/hw/mlx4/mad.c | 2 +-
drivers/infiniband/hw/mlx4/mcg.c | 2 +-
drivers/infiniband/hw/mlx4/mlx4_ib.h | 2 +-
drivers/infiniband/hw/nes/nes.c | 4 +-
drivers/infiniband/hw/nes/nes.h | 40 +--
drivers/infiniband/hw/nes/nes_cm.c | 62 ++--
drivers/infiniband/hw/nes/nes_mgt.c | 8 +-
drivers/infiniband/hw/nes/nes_nic.c | 40 +--
drivers/infiniband/hw/nes/nes_verbs.c | 10 +-
drivers/input/gameport/gameport.c | 4 +-
drivers/input/input.c | 4 +-
drivers/input/misc/ims-pcu.c | 4 +-
drivers/input/serio/serio.c | 4 +-
drivers/input/serio/serio_raw.c | 4 +-
drivers/isdn/capi/capi.c | 11 +-
drivers/md/dm-core.h | 4 +-
drivers/md/dm-raid.c | 3 +-
drivers/md/dm-raid1.c | 18 +-
drivers/md/dm-stripe.c | 11 +-
drivers/md/dm.c | 12 +-
drivers/md/md.c | 32 ++-
drivers/md/md.h | 15 +-
drivers/md/raid1.c | 8 +-
drivers/md/raid10.c | 20 +-
drivers/md/raid5.c | 17 +-
drivers/media/pci/ivtv/ivtv-driver.c | 2 +-
drivers/media/pci/solo6x10/solo6x10-p2m.c | 3 +-
drivers/media/pci/solo6x10/solo6x10.h | 2 +-
drivers/media/pci/tw68/tw68-core.c | 2 +-
drivers/media/radio/radio-maxiradio.c | 2 +-
drivers/media/radio/radio-shark.c | 2 +-
drivers/media/radio/radio-shark2.c | 2 +-
drivers/media/radio/radio-si476x.c | 2 +-
drivers/media/v4l2-core/v4l2-device.c | 4 +-
drivers/misc/lis3lv02d/lis3lv02d.c | 8 +-
drivers/misc/lis3lv02d/lis3lv02d.h | 2 +-
drivers/misc/lkdtm.h | 17 ++
drivers/misc/lkdtm_bugs.c | 122 ++++++--
drivers/misc/lkdtm_core.c | 17 ++
drivers/misc/sgi-gru/gruhandles.c | 4 +-
drivers/misc/sgi-gru/gruprocfs.c | 8 +-
drivers/misc/sgi-gru/grutables.h | 158 +++++-----
drivers/net/hyperv/hyperv_net.h | 2 +-
drivers/net/hyperv/rndis_filter.c | 4 +-
drivers/net/ipvlan/ipvlan_core.c | 2 +-
drivers/net/macvlan.c | 2 +-
drivers/net/usb/sierra_net.c | 4 +-
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 2 +-
drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 4 +-
drivers/oprofile/buffer_sync.c | 8 +-
drivers/oprofile/event_buffer.c | 2 +-
drivers/oprofile/oprof.c | 2 +-
drivers/oprofile/oprofile_stats.c | 10 +-
drivers/oprofile/oprofile_stats.h | 10 +-
drivers/oprofile/oprofilefs.c | 8 +-
drivers/regulator/core.c | 4 +-
drivers/scsi/fcoe/fcoe_sysfs.c | 12 +-
drivers/scsi/libfc/fc_exch.c | 54 ++--
drivers/scsi/lpfc/lpfc.h | 8 +-
drivers/scsi/lpfc/lpfc_debugfs.c | 18 +-
drivers/scsi/lpfc/lpfc_scsi.c | 10 +-
drivers/scsi/pmcraid.c | 24 +-
drivers/scsi/pmcraid.h | 8 +-
drivers/scsi/qla4xxx/ql4_def.h | 3 +-
drivers/scsi/qla4xxx/ql4_os.c | 7 +-
drivers/scsi/scsi_lib.c | 8 +-
drivers/scsi/scsi_sysfs.c | 2 +-
drivers/scsi/scsi_transport_fc.c | 6 +-
drivers/scsi/scsi_transport_iscsi.c | 7 +-
drivers/scsi/scsi_transport_srp.c | 6 +-
drivers/scsi/sd.c | 2 +-
drivers/target/sbp/sbp_target.c | 4 +-
drivers/tty/hvc/hvsi.c | 12 +-
drivers/tty/hvc/hvsi_lib.c | 4 +-
drivers/tty/serial/ioc4_serial.c | 6 +-
drivers/tty/serial/msm_serial.c | 4 +-
drivers/uio/uio.c | 13 +-
drivers/usb/atm/usbatm.c | 24 +-
drivers/usb/core/devices.c | 6 +-
drivers/usb/core/hcd.c | 4 +-
drivers/usb/core/sysfs.c | 2 +-
drivers/usb/core/usb.c | 2 +-
drivers/usb/host/ehci-hub.c | 4 +-
drivers/usb/misc/appledisplay.c | 4 +-
drivers/usb/usbip/vhci.h | 2 +-
drivers/usb/usbip/vhci_hcd.c | 6 +-
drivers/usb/usbip/vhci_rx.c | 2 +-
drivers/usb/wusbcore/wa-hc.h | 4 +-
drivers/usb/wusbcore/wa-xfer.c | 2 +-
drivers/video/fbdev/hyperv_fb.c | 4 +-
drivers/video/fbdev/udlfb.c | 32 +--
fs/afs/inode.c | 4 +-
fs/btrfs/delayed-inode.c | 6 +-
fs/btrfs/delayed-inode.h | 4 +-
fs/cachefiles/daemon.c | 4 +-
fs/cachefiles/internal.h | 16 +-
fs/cachefiles/namei.c | 6 +-
fs/cachefiles/proc.c | 12 +-
fs/ceph/super.c | 4 +-
fs/cifs/cifs_debug.c | 14 +-
fs/cifs/cifsfs.c | 4 +-
fs/cifs/cifsglob.h | 55 ++--
fs/cifs/misc.c | 4 +-
fs/cifs/smb1ops.c | 80 +++---
fs/cifs/smb2ops.c | 84 +++---
fs/coda/cache.c | 10 +-
fs/coredump.c | 6 +-
fs/ext4/ext4.h | 20 +-
fs/ext4/mballoc.c | 44 +--
fs/fscache/cookie.c | 40 +--
fs/fscache/internal.h | 202 ++++++-------
fs/fscache/object.c | 26 +-
fs/fscache/operation.c | 38 +--
fs/fscache/page.c | 110 +++----
fs/fscache/stats.c | 348 +++++++++++------------
fs/inode.c | 5 +-
fs/kernfs/file.c | 12 +-
fs/lockd/clntproc.c | 4 +-
fs/namespace.c | 4 +-
fs/nfs/inode.c | 6 +-
fs/notify/notification.c | 4 +-
fs/ocfs2/localalloc.c | 2 +-
fs/ocfs2/ocfs2.h | 10 +-
fs/ocfs2/suballoc.c | 12 +-
fs/ocfs2/super.c | 20 +-
fs/proc/meminfo.c | 2 +-
fs/quota/netlink.c | 4 +-
fs/reiserfs/do_balan.c | 2 +-
fs/reiserfs/procfs.c | 2 +-
fs/reiserfs/reiserfs.h | 4 +-
include/asm-generic/atomic-long.h | 264 ++++++++++++++---
include/asm-generic/atomic.h | 56 ++++
include/asm-generic/atomic64.h | 13 +
include/asm-generic/bug.h | 7 +
include/asm-generic/local.h | 15 +
include/linux/atmdev.h | 2 +-
include/linux/atomic.h | 114 ++++++++
include/linux/blktrace_api.h | 2 +-
include/linux/fscache-cache.h | 2 +-
include/linux/genhd.h | 2 +-
include/linux/irqdesc.h | 2 +-
include/linux/kgdb.h | 2 +-
include/linux/mm.h | 2 +-
include/linux/mmzone.h | 4 +-
include/linux/netdevice.h | 8 +-
include/linux/oprofile.h | 2 +-
include/linux/padata.h | 2 +-
include/linux/percpu-refcount.h | 18 +-
include/linux/perf_event.h | 10 +-
include/linux/sched.h | 2 +-
include/linux/slab_def.h | 8 +-
include/linux/sonet.h | 2 +-
include/linux/sunrpc/svc_rdma.h | 18 +-
include/linux/swapops.h | 10 +-
include/linux/types.h | 17 ++
include/linux/uio_driver.h | 2 +-
include/linux/usb.h | 2 +-
include/linux/vmstat.h | 38 +--
include/media/v4l2-device.h | 2 +-
include/net/bonding.h | 2 +-
include/net/caif/cfctrl.h | 4 +-
include/net/flow.h | 2 +-
include/net/gro_cells.h | 2 +-
include/net/inetpeer.h | 3 +-
include/net/ip_fib.h | 2 +-
include/net/ip_vs.h | 4 +-
include/net/iucv/af_iucv.h | 2 +-
include/net/net_namespace.h | 12 +-
include/net/netns/ipv4.h | 4 +-
include/net/netns/ipv6.h | 4 +-
include/net/netns/xfrm.h | 2 +-
include/net/sock.h | 8 +-
include/net/tcp.h | 2 +-
include/net/xfrm.h | 2 +-
include/scsi/scsi_device.h | 6 +-
include/video/udlfb.h | 12 +-
kernel/audit.c | 8 +-
kernel/auditsc.c | 4 +-
kernel/debug/debug_core.c | 16 +-
kernel/events/core.c | 27 +-
kernel/irq/manage.c | 2 +-
kernel/irq/spurious.c | 2 +-
kernel/locking/lockdep.c | 2 +-
kernel/padata.c | 4 +-
kernel/panic.c | 11 +
kernel/profile.c | 14 +-
kernel/rcu/rcutorture.c | 61 ++--
kernel/rcu/tree.c | 36 +--
kernel/rcu/tree.h | 10 +-
kernel/rcu/tree_exp.h | 2 +-
kernel/rcu/tree_plugin.h | 12 +-
kernel/rcu/tree_trace.c | 14 +-
kernel/sched/auto_group.c | 4 +-
kernel/time/timer_stats.c | 11 +-
kernel/trace/blktrace.c | 6 +-
kernel/trace/ftrace.c | 4 +-
kernel/trace/ring_buffer.c | 98 +++----
kernel/trace/trace_clock.c | 4 +-
kernel/trace/trace_functions_graph.c | 4 +-
kernel/trace/trace_mmiotrace.c | 8 +-
lib/percpu-refcount.c | 12 +-
lib/show_mem.c | 3 +-
mm/backing-dev.c | 4 +-
mm/memory-failure.c | 2 +-
mm/slab.c | 16 +-
mm/sparse.c | 2 +-
mm/swapfile.c | 12 +-
mm/vmstat.c | 26 +-
net/atm/atm_misc.c | 8 +-
net/atm/proc.c | 8 +-
net/atm/resources.c | 4 +-
net/batman-adv/bat_iv_ogm.c | 8 +-
net/batman-adv/fragmentation.c | 3 +-
net/batman-adv/soft-interface.c | 6 +-
net/batman-adv/types.h | 6 +-
net/caif/cfctrl.c | 11 +-
net/ceph/messenger.c | 4 +-
net/core/datagram.c | 2 +-
net/core/dev.c | 18 +-
net/core/flow.c | 9 +-
net/core/net-sysfs.c | 2 +-
net/core/netpoll.c | 4 +-
net/core/rtnetlink.c | 2 +-
net/core/sock.c | 14 +-
net/core/sock_diag.c | 8 +-
net/ipv4/devinet.c | 4 +-
net/ipv4/fib_frontend.c | 6 +-
net/ipv4/fib_semantics.c | 2 +-
net/ipv4/inet_connection_sock.c | 4 +-
net/ipv4/inet_timewait_sock.c | 3 +-
net/ipv4/inetpeer.c | 2 +-
net/ipv4/ip_fragment.c | 2 +-
net/ipv4/ping.c | 2 +-
net/ipv4/raw.c | 5 +-
net/ipv4/route.c | 12 +-
net/ipv4/tcp_input.c | 2 +-
net/ipv4/udp.c | 10 +-
net/ipv6/addrconf.c | 7 +-
net/ipv6/af_inet6.c | 2 +-
net/ipv6/datagram.c | 2 +-
net/ipv6/ip6_fib.c | 4 +-
net/ipv6/raw.c | 6 +-
net/ipv6/udp.c | 6 +-
net/iucv/af_iucv.c | 5 +-
net/key/af_key.c | 4 +-
net/l2tp/l2tp_eth.c | 38 +--
net/netfilter/ipvs/ip_vs_conn.c | 6 +-
net/netfilter/ipvs/ip_vs_core.c | 8 +-
net/netfilter/ipvs/ip_vs_ctl.c | 12 +-
net/netfilter/ipvs/ip_vs_sync.c | 6 +-
net/netfilter/ipvs/ip_vs_xmit.c | 4 +-
net/netfilter/nfnetlink_log.c | 4 +-
net/netfilter/xt_statistic.c | 9 +-
net/netlink/af_netlink.c | 4 +-
net/packet/af_packet.c | 4 +-
net/phonet/pep.c | 6 +-
net/phonet/socket.c | 2 +-
net/rds/cong.c | 6 +-
net/rds/ib.h | 2 +-
net/rds/ib_cm.c | 2 +-
net/rds/ib_recv.c | 4 +-
net/rxrpc/af_rxrpc.c | 2 +-
net/rxrpc/ar-internal.h | 4 +-
net/rxrpc/call_object.c | 2 +-
net/rxrpc/conn_event.c | 4 +-
net/rxrpc/conn_object.c | 2 +-
net/rxrpc/local_object.c | 2 +-
net/rxrpc/output.c | 4 +-
net/rxrpc/peer_object.c | 2 +-
net/rxrpc/proc.c | 2 +-
net/rxrpc/rxkad.c | 4 +-
net/sched/sch_generic.c | 4 +-
net/sctp/sctp_diag.c | 2 +-
net/sunrpc/auth_gss/svcauth_gss.c | 4 +-
net/sunrpc/sched.c | 4 +-
net/sunrpc/xprtrdma/svc_rdma.c | 36 +--
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 8 +-
net/sunrpc/xprtrdma/svc_rdma_sendto.c | 2 +-
net/sunrpc/xprtrdma/svc_rdma_transport.c | 2 +-
net/xfrm/xfrm_policy.c | 11 +-
net/xfrm/xfrm_state.c | 4 +-
security/Kconfig | 19 ++
security/integrity/ima/ima.h | 4 +-
security/integrity/ima/ima_api.c | 2 +-
security/integrity/ima/ima_fs.c | 4 +-
security/integrity/ima/ima_queue.c | 2 +-
security/selinux/avc.c | 7 +-
security/selinux/include/xfrm.h | 2 +-
373 files changed, 3964 insertions(+), 2035 deletions(-)
create mode 100644 Documentation/security/hardened-atomic.txt
--
2.7.4
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