Laura Abbott
1414c7f4f7
mm/page_poisoning.c: allow for zero poisoning ...
By default, page poisoning uses a poison value (0xaa) on free. If this
is changed to 0, the page is not only sanitized but zeroing on alloc
with __GFP_ZERO can be skipped as well. The tradeoff is that detecting
corruption from the poisoning is harder to detect. This feature also
cannot be used with hibernation since pages are not guaranteed to be
zeroed after hibernation.
Credit to Grsecurity/PaX team for inspiring this work
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mathias Krause <minipli@googlemail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-15 16:55:16 -07:00
ceph: initial CEPH_FEATURE_FS_FILE_LAYOUT_V2 support
2016-03-04 21:00:37 +01:00
ARM: SoC multiplatform code changes for v4.5
2016-01-20 18:03:56 -08:00
crush: add chooseleaf_stable tunable
2016-02-04 18:25:55 +01:00
RTC for 4.5
2016-01-18 12:10:45 -08:00
net/mlx4_core: Set UAR page size to 4KB regardless of system page size
2016-02-17 10:29:27 -05:00
net/mlx5e: Fix ethtool RX hash func configuration change
2016-03-02 14:37:25 -05:00
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2016-01-24 12:50:56 -08:00
power: bq27xxx_battery: Restore device name
2016-02-21 20:49:34 +01:00
raid6/algos.c : bug fix : Add the missing definitions to the pq.h file
2016-01-21 14:47:08 -08:00
sched/debug: Make schedstats a runtime tunable that is disabled by default
2016-02-09 11:54:23 +01:00
soc: ti: knav_dma: rename pad in struct knav_dma_desc to sw_data
2016-02-21 22:03:15 -05:00
Initial roundup of 4.5 merge window patches
2016-01-23 18:45:06 -08:00
libata: fix HDIO_GET_32BIT ioctl
2016-02-11 10:07:18 -05:00
mmc: atmel: get rid of struct mci_dma_data
2016-01-14 13:40:30 +01:00
atomic: Export fetch_or()
2016-02-13 15:34:28 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2016-01-17 19:13:15 -08:00
MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
2016-01-24 03:47:37 +01:00
MIPS: bcm963xx: Update bcm_tag field image_sequence
2016-01-24 03:49:03 +01:00
block: don't optimize for non-cloned bio in bio_get_last_bvec()
2016-03-12 14:12:10 -07:00
block: fix blk_rq_get_max_sectors for driver private requests
2016-03-03 14:43:45 -07:00
arch: Introduce post-init read-only memory
2016-02-22 08:51:38 +01:00
cgroup: make sure a parent css isn't offlined before its children
2016-01-22 10:42:57 -05:00
include/linux/cleancache.h: Clean up code
2016-01-27 09:10:29 -05:00
Linux 4.5-rc6
2016-02-29 09:55:22 +01:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2016-01-20 17:20:53 -08:00
printk: do cond_resched() between lines while outputting to consoles
2016-01-16 11:17:25 -08:00
kernel/cpu.c: make set_cpu_* static inlines
2016-01-20 17:09:18 -08:00
cpuset: make mm migration asynchronous
2016-01-22 10:22:46 -05:00
dax: move writeback calls into the filesystems
2016-02-27 10:28:52 -08:00
use ->d_seq to get coherency between ->d_inode and ->d_flags
2016-02-29 12:16:43 -05:00
pty: make sure super_block is still valid in final /dev/tty close
2016-02-06 23:45:46 -08:00
dma-mapping: always provide the dma_map_ops based implementation
2016-01-20 17:09:18 -08:00
Merge branch 'mm-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-14 16:31:41 -07:00
firmware: dmi_scan: Save SMBIOS Type 9 System Slots
2016-01-15 22:08:45 +01:00
efi: Make efivarfs entries immutable by default
2016-02-10 16:25:52 +00:00
err.h: add (missing) unlikely() to IS_ERR_OR_NULL()
2016-01-16 11:17:24 -08:00
mm: fault-inject take over bootstrap kmem_cache check
2016-03-15 16:55:16 -07:00
block: revert runtime dax control of the raw block device
2016-01-30 13:35:31 -08:00
Revert "fsnotify: destroy marks with call_srcu instead of dedicated thread"
2016-02-18 16:23:24 -08:00
sched/debug: Fix preempt_disable_ip recording for preempt_disable()
2016-02-29 09:53:10 +01:00
mm, tracing: unify mm flags handling in tracepoints and printk
2016-03-15 16:55:16 -07:00
hrtimer: Handle remaining time proper for TIME_LOW_RES
2016-01-17 11:13:55 +01:00
thp: change pmd_trans_huge_lock() interface to return ptl
2016-01-21 17:20:51 -08:00
hugetlb: fix compile error on tile
2016-01-15 17:56:32 -08:00
asm-generic: Consolidate mark_rodata_ro()
2016-02-22 08:51:37 +01:00
iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts
2016-02-15 12:42:38 +00:00
Initial roundup of 4.5 merge window patches
2016-01-23 18:45:06 -08:00
lib/iomap_copy.c: add __ioread32_copy()
2016-01-20 17:09:18 -08:00
iommu: Update struct iommu_ops comments
2016-01-29 12:34:29 +01:00
resource: Kill walk_iomem_res()
2016-01-30 09:49:59 +01:00
irqdomain: Allow domain lookup with DOMAIN_BUS_WIRED token
2016-01-26 16:00:14 +01:00
kasan: add functions to clear stack poison
2016-03-09 15:43:42 -08:00
include/linux/kdev_t.h: remove new_valid_dev()
2016-01-16 11:17:23 -08:00
include/linux/kernel.h: change abs() macro so it uses consistent return type
2016-01-16 11:17:22 -08:00
kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE
2016-01-20 17:09:18 -08:00
KVM: Use simple waitqueue for vcpu->wq
2016-02-25 11:27:16 +01:00
kvm: rename pfn_t to kvm_pfn_t
2016-01-15 17:56:32 -08:00
sched/debug: Make schedstats a runtime tunable that is disabled by default
2016-02-09 11:54:23 +01:00
libata: Align ata_device's id on a cacheline
2016-02-25 16:37:06 -05:00
nfit: update address range scrub commands to the acpi 6.1 format
2016-02-23 17:17:20 -08:00
lightnvm: allow to force mm initialization
2016-02-04 09:19:45 -07:00
list: kill list_force_poison()
2016-03-09 15:43:42 -08:00
mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
2016-01-20 17:09:18 -08:00
kernel/locking/lockdep.c: convert hash tables to hlists
2016-02-11 18:35:48 -08:00
lz4: fix wrong compress buffer size for 64-bits
2016-01-20 17:09:18 -08:00
memblock: fix section mismatch
2016-01-15 17:56:32 -08:00
mm: fix some spelling
2016-03-15 16:55:16 -07:00
x86, mm: introduce vmem_altmap to augment vmemmap_populate()
2016-01-15 17:56:32 -08:00
mm/mempolicy.c: convert the shared_policy lock to a rwlock
2016-01-14 16:00:49 -08:00
mm, dax, pmem: introduce {get|put}_dev_pagemap() for dax-gup
2016-01-15 17:56:32 -08:00
mm, page_owner: track and print last migrate reason
2016-03-15 16:55:16 -07:00
mm/page_poisoning.c: allow for zero poisoning
2016-03-15 16:55:16 -07:00
mm: move lru_to_page to mm_inline.h
2016-01-14 16:00:49 -08:00
mm: polish virtual memory accounting
2016-02-03 08:28:43 -08:00
mm, debug: move bad flags printing to bad_page()
2016-03-15 16:55:16 -07:00
mm, page_owner: print migratetype of page and pageblock, symbolic flags
2016-03-15 16:55:16 -07:00
modules: fix longstanding /proc/kallsyms vs module insertion race.
2016-02-03 16:58:15 +10:30
PCI changes for the v4.5 merge window:
2016-01-21 11:52:16 -08:00
net: make netdev_for_each_lower_dev safe for device removal
2016-02-19 15:29:26 -05:00
NFS client updates for Linux 4.5
2016-01-14 16:08:23 -08:00
nfs: fix nfs_size_to_loff_t
2016-02-08 15:20:01 -05:00
pnfs/blocklayout: fix a memeory leak when using,vmalloc_to_page
2016-02-17 11:44:45 -05:00
of: drop symbols declared by _OF_DECLARE() from modules
2016-01-25 08:35:50 -06:00
PCI: host: Add of_pci_get_host_bridge_resources() stub
2016-01-15 12:30:35 -06:00
mm: rework mapcount accounting to enable 4k mapping of THPs
2016-01-15 17:56:32 -08:00
mm, page_owner: track and print last migrate reason
2016-03-15 16:55:16 -07:00
mm, page_owner: dump page owner info from dump_page()
2016-03-15 16:55:16 -07:00
mm: add find_get_entries_tag()
2016-01-22 17:02:18 -08:00
Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"
2016-02-17 17:23:36 -06:00
PCI: Add Netronome NFP4000 PF device ID
2016-01-15 17:29:37 -06:00
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-14 19:44:38 -07:00
mm: fix pfn_t vs highmem
2016-02-11 18:35:48 -08:00
mm: fix pfn_t vs highmem
2016-02-11 18:35:48 -08:00
pipe: limit the per-user amount of pages allocated in pipes
2016-01-19 19:25:21 -05:00
pmem: add wb_cache_pmem() to the PMEM API
2016-01-22 17:02:18 -08:00
mm/page_poisoning.c: allow for zero poisoning
2016-03-15 16:55:16 -07:00
posix-cpu-timers: Migrate to use new tick dependency mask model
2016-03-02 16:44:27 +01:00
printk: help pr_debug and pr_devel to optimize out arguments
2016-01-16 11:17:29 -08:00
ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-01-20 17:09:18 -08:00
radix-tree: fix oops after radix_tree_iter_retry
2016-02-05 18:10:40 -08:00
drivers: char: random: add get_random_long()
2016-02-27 10:28:52 -08:00
rbtree: use READ_ONCE in RB_EMPTY_ROOT
2016-01-20 17:09:18 -08:00
mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
2016-02-05 18:10:40 -08:00
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-14 19:44:38 -07:00
ipc/shm.c: is_file_shm_hugepages() can be boolean
2016-01-20 17:09:18 -08:00
make sure that freeing shmem fast symlinks is RCU-delayed
2016-01-22 18:08:52 -05:00
mld, igmp: Fix reserved tailroom calculation
2016-03-03 15:41:07 -05:00
slub: convert SLAB_DEBUG_FREE to SLAB_CONSISTENCY_CHECKS
2016-03-15 16:55:16 -07:00
mm/slab: alternative implementation for DEBUG_SLAB_LEAK
2016-03-15 16:55:16 -07:00
mm/slub: support left redzone
2016-03-15 16:55:16 -07:00
stmmac: Fix 'eth0: No PHY found' regression
2016-03-03 15:02:05 -05:00
wait.[ch]: Introduce the simple waitqueue (swait) implementation
2016-02-25 11:27:16 +01:00
mm: free swap cache aggressively if memcg swap is full
2016-01-20 17:09:18 -08:00
swiotlb: Make linux/swiotlb.h standalone includible
2016-01-20 17:29:52 -05:00
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
posix-cpu-timers: Migrate to use new tick dependency mask model
2016-03-02 16:44:27 +01:00
numa: remove stale node_has_online_mem() define
2016-01-18 14:49:33 -05:00
tracepoints: move trace_print_flags definitions to tracepoint-defs.h
2016-03-15 16:55:16 -07:00
tracepoints: move trace_print_flags definitions to tracepoint-defs.h
2016-03-15 16:55:16 -07:00
tracing: Fix check for cpu online when event is disabled
2016-03-09 11:58:41 -05:00
tty: Wait interruptibly for tty lock on reopen
2016-01-26 23:17:54 -08:00
lib/ucs2_string: Add ucs2 -> utf8 helper functions
2016-02-10 13:19:03 +00:00
mm: support madvise(MADV_FREE)
2016-01-15 17:56:32 -08:00
mm, vmalloc: remove VM_VPAGES
2016-01-14 16:00:49 -08:00
mm: memcontrol: hook up vmpressure to socket pressure
2016-01-14 16:00:49 -08:00
vmstat: make vmstat_updater deferrable again and shut down on idle
2016-01-14 16:00:49 -08:00
sched/wait: Fix wait_event_freezable() documentation
2016-02-24 09:09:45 +01:00
workqueue: skip flush dependency checks for legacy workqueues
2016-01-29 13:31:10 -05:00
writeback: flush inode cgroup wb switches instead of pinning super_block
2016-03-03 14:42:50 -07:00
