Andrea Arcangeli
dd0db88d80
userfaultfd: non-cooperative: rollback userfaultfd_exit ...
Patch series "userfaultfd non-cooperative further update for 4.11 merge
window".
Unfortunately I noticed one relevant bug in userfaultfd_exit while doing
more testing. I've been doing testing before and this was also tested
by kbuild bot and exercised by the selftest, but this bug never
reproduced before.
I dropped userfaultfd_exit as result. I dropped it because of
implementation difficulty in receiving signals in __mmput and because I
think -ENOSPC as result from the background UFFDIO_COPY should be enough
already.
Before I decided to remove userfaultfd_exit, I noticed userfaultfd_exit
wasn't exercised by the selftest and when I tried to exercise it, after
moving it to a more correct place in __mmput where it would make more
sense and where the vma list is stable, it resulted in the
event_wait_completion in D state. So then I added the second patch to
be sure even if we call userfaultfd_event_wait_completion too late
during task exit(), we won't risk to generate tasks in D state. The
same check exists in handle_userfault() for the same reason, except it
makes a difference there, while here is just a robustness check and it's
run under WARN_ON_ONCE.
While looking at the userfaultfd_event_wait_completion() function I
looked back at its callers too while at it and I think it's not ok to
stop executing dup_fctx on the fcs list because we relay on
userfaultfd_event_wait_completion to execute
userfaultfd_ctx_put(fctx->orig) which is paired against
userfaultfd_ctx_get(fctx->orig) in dup_userfault just before
list_add(fcs). This change only takes care of fctx->orig but this area
also needs further review looking for similar problems in fctx->new.
The only patch that is urgent is the first because it's an use after
free during a SMP race condition that affects all processes if
CONFIG_USERFAULTFD=y. Very hard to reproduce though and probably
impossible without SLUB poisoning enabled.
This patch (of 3):
I once reproduced this oops with the userfaultfd selftest, it's not
easily reproducible and it requires SLUB poisoning to reproduce.
general protection fault: 0000 [#1 ] SMP
Modules linked in:
CPU: 2 PID: 18421 Comm: userfaultfd Tainted: G ------------ T 3.10.0+ #15
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.1-0-g8891697-prebuilt.qemu-project.org 04/01/2014
task: ffff8801f83b9440 ti: ffff8801f833c000 task.ti: ffff8801f833c000
RIP: 0010:[<ffffffff81451299>] [<ffffffff81451299>] userfaultfd_exit+0x29/0xa0
RSP: 0018:ffff8801f833fe80 EFLAGS: 00010202
RAX: ffff8801f833ffd8 RBX: 6b6b6b6b6b6b6b6b RCX: ffff8801f83b9440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800baf18600
RBP: ffff8801f833fee8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff8127ceb3 R12: 0000000000000000
R13: ffff8800baf186b0 R14: ffff8801f83b99f8 R15: 00007faed746c700
FS: 0000000000000000(0000) GS:ffff88023fc80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007faf0966f028 CR3: 0000000001bc6000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
do_exit+0x297/0xd10
SyS_exit+0x17/0x20
tracesys+0xdd/0xe2
Code: 00 00 66 66 66 66 90 55 48 89 e5 41 54 53 48 83 ec 58 48 8b 1f 48 85 db 75 11 eb 73 66 0f 1f 44 00 00 48 8b 5b 10 48 85 db 74 64 <4c> 8b a3 b8 00 00 00 4d 85 e4 74 eb 41 f6 84 24 2c 01 00 00 80
RIP [<ffffffff81451299>] userfaultfd_exit+0x29/0xa0
RSP <ffff8801f833fe80>
---[ end trace 9fecd6dcb442846a ]---
In the debugger I located the "mm" pointer in the stack and walking
mm->mmap->vm_next through the end shows the vma->vm_next list is fully
consistent and it is null terminated list as expected. So this has to
be an SMP race condition where userfaultfd_exit was running while the
vma list was being modified by another CPU.
When userfaultfd_exit() run one of the ->vm_next pointers pointed to
SLAB_POISON (RBX is the vma pointer and is 0x6b6b..).
The reason is that it's not running in __mmput but while there are still
other threads running and it's not holding the mmap_sem (it can't as it
has to wait the even to be received by the manager). So this is an use
after free that was happening for all processes.
One more implementation problem aside from the race condition:
userfaultfd_exit has really to check a flag in mm->flags before walking
the vma or it's going to slowdown the exit() path for regular tasks.
One more implementation problem: at that point signals can't be
delivered so it would also create a task in D state if the manager
doesn't read the event.
The major design issue: it overall looks superfluous as the manager can
check for -ENOSPC in the background transfer:
if (mmget_not_zero(ctx->mm)) {
[..]
} else {
return -ENOSPC;
}
It's safer to roll it back and re-introduce it later if at all.
[rppt@linux.vnet.ibm.com: documentation fixup after removal of UFFD_EVENT_EXIT]
Link: http://lkml.kernel.org/r/1488345437-4364-1-git-send-email-rppt@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/20170224181957.19736-2-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-09 17:01:09 -08:00
mtd: bcm47xxsflash: use platform_(set|get)_drvdata
2017-02-08 11:19:43 -08:00
can: rx-offload: Add support for timestamp based irq offloading
2017-02-06 15:13:24 +01:00
libceph: get rid of ack vs commit
2017-02-24 19:04:57 +01:00
crush: merge working data and scratch
2017-02-20 12:16:11 +01:00
firmware /meson
fpga: Add scatterlist based programming
2017-02-10 15:20:44 +01:00
This is the bulk of GPIO changes for the v4.11 cycle
2017-02-23 08:46:04 -08:00
Input: tca8418 - switch to using generic device properties
2017-01-31 11:31:49 -08:00
4.11 is going to be a relatively large release for KVM, with a little over
2017-02-22 18:22:53 -08:00
nlm: Ensure callback code also checks that the files match
2017-02-13 17:02:50 -05:00
RTC for 4.11
2017-02-27 19:59:21 -08:00
net/mlx4: && vs & typo
2017-03-01 09:50:58 -08:00
Mellanox specific updates for 4.11 merge window
2017-02-23 11:27:49 -08:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2017-02-22 10:15:09 -08:00
scripts/spelling.txt: add "partiton" pattern and fix typo instances
2017-02-27 18:43:46 -08:00
netfilter: nfnetlink: allow to check for generation ID
2017-02-12 14:45:11 +01:00
RTC for 4.11
2017-02-27 19:59:21 -08:00
qed: Add support for hardware offloaded FCoE.
2017-02-19 18:10:42 -05:00
scripts/spelling.txt: add "disble(d)" pattern and fix typo instances
2017-03-09 17:01:09 -08:00
rpmsg: qcom: smd: Return positively when not enabled
2017-02-06 13:49:29 -08:00
sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>
2017-03-03 01:45:41 +01:00
ARM: SoC driver updates
2017-02-23 15:57:04 -08:00
scripts/spelling.txt: add "partiton" pattern and fix typo instances
2017-02-27 18:43:46 -08:00
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
ACPI updates for v4.11-rc1
2017-02-20 17:55:15 -08:00
ARM: smccc: Update HVC comment to describe new quirk parameter
2017-02-08 14:54:12 +00:00
async_tx: deprecate broken support for channel switching
2017-02-16 10:08:41 +05:30
Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit
2017-02-21 13:25:50 -08:00
average: change to declare precision, not factor
2017-03-02 08:32:46 +01:00
block: Dynamically allocate and refcount backing_dev_info
2017-02-02 08:20:50 -07:00
block: Get rid of blk_get_backing_dev_info()
2017-02-02 08:21:32 -07:00
sched/headers, vfs/execve: Move the do_execve*() prototypes from <linux/sched.h> to <linux/binfmts.h>
2017-03-03 01:45:23 +01:00
block: introduce bio_clone_bioset_partial()
2017-02-15 11:22:05 -08:00
bitfield.h: add FIELD_FIT() helper
2017-02-10 15:52:24 -05:00
blk-mq: provide a default queue mapping for virtio device
2017-02-27 20:54:05 +02:00
blk-mq: Provide freeze queue timeout
2017-03-02 08:56:04 -07:00
block: fold cmd_type into the REQ_OP_ space
2017-01-31 14:00:44 -07:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>
2017-03-02 08:42:27 +01:00
blktrace: make do_blk_trace_setup() static
2017-02-02 10:20:16 -07:00
bpf: introduce BPF_F_ALLOW_OVERRIDE flag
2017-02-12 21:52:19 -05:00
bpf: make jited programs visible in traces
2017-02-17 13:40:05 -05:00
net: phy: bcm7xxx: Add BCM74371 PHY ID
2017-02-07 13:03:10 -05:00
mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers
2017-02-08 15:41:43 -08:00
bug: switch data corruption check to __must_check
2017-02-24 17:46:56 -08:00
cdrom: Make device operations read-only
2017-02-14 08:29:56 -07:00
sched/headers, cgroups: Remove the threadgroup_change_*() wrappery
2017-03-02 08:42:25 +01:00
clockevents: Add a clkevt-of mechanism like clksrc-of
2017-02-07 20:58:30 +01:00
mm: cma_alloc: allow to specify GFP mask
2017-02-24 17:46:55 -08:00
sigaltstack: support SS_AUTODISARM for CONFIG_COMPAT
2017-02-27 18:43:45 -08:00
objtool, modules: Discard objtool annotation sections for modules
2017-03-01 20:32:25 +01:00
Merge branch 'akpm' (patches from Andrew)
2017-02-27 23:09:29 -08:00
sched/headers: Prepare to move _init() prototypes from <linux/sched.h> to <linux/sched/init.h>
2017-03-02 08:42:40 +01:00
cpufreq: Fix typos in comments
2017-02-04 00:47:59 +01:00
virtio, vhost: optimizations, fixes
2017-03-02 13:53:13 -08:00
cpuidle:powernv: Add helper function to populate powernv idle states.
2017-01-31 08:32:13 +11:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 10:06:32 -08:00
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
ext4: move halfmd4 into hash.c directly
2017-02-02 11:52:14 -05:00
mm: replace FAULT_FLAG_SIZE with parameter to huge_fault
2017-02-24 17:46:54 -08:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
sched/headers: Remove <linux/sched.h> and <linux/slab.h> from <linux/delayacct.h>
2017-03-03 01:45:28 +01:00
PM / devfreq: Fix available_governor sysfs
2017-01-31 15:46:49 +09:00
This is a tree wide change and has been kept separate for that reason.
2017-02-25 13:45:43 -08:00
mm: wire up GFP flag passing in dma_alloc_from_contiguous
2017-02-24 17:46:55 -08:00
iommu/dma: Remove bogus dma_supported() implementation
2017-02-06 13:14:10 +01:00
This is a tree wide change and has been kept separate for that reason.
2017-02-25 13:45:43 -08:00
dmaengine: Provide a wrapper for memcpy operations
2017-01-31 09:03:20 +05:30
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
efi/x86: Move the EFI BGRT init code to early init code
2017-02-01 08:45:46 +01:00
efi: Get and store the secure boot status
2017-02-07 10:42:10 +01:00
blk-mq: pass bio to blk_mq_sched_get_rq_priv
2017-02-10 09:09:59 -07:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
module: unify absolute krctab definitions for 32-bit and 64-bit
2017-02-03 08:28:25 -08:00
f2fs: introduce free nid bitmap
2017-02-27 10:07:47 -08:00
sched/headers: Remove <linux/sched.h> and <linux/slab.h> from <linux/delayacct.h>
2017-03-03 01:45:28 +01:00
This renames the (now inaccurate) CONFIG_DEBUG_RODATA and related config
2017-02-21 17:56:45 -08:00
objtool, modules: Discard objtool annotation sections for modules
2017-03-01 20:32:25 +01:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
fscache: Fix dead object requeue
2017-01-31 13:23:09 -05:00
fscrypt: split supp and notsupp declarations into their own headers
2017-02-06 23:26:43 -05:00
fscrypt: split supp and notsupp declarations into their own headers
2017-02-06 23:26:43 -05:00
fscrypt: split supp and notsupp declarations into their own headers
2017-02-06 23:26:43 -05:00
drivers/fsi: add driver to device matches
2017-02-10 15:19:48 +01:00
video: fbdev: fsl-diu-fb: fix spelling mistake "palette"
2017-02-20 13:51:07 +01:00
mtd: nand: ifc: Fix location of eccstat registers for IFC V1.0
2017-02-06 08:54:01 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
scsi, block: fix duplicate bdi name registration crashes
2017-02-02 08:23:19 -07:00
mm: alloc_contig_range: allow to specify GFP mask
2017-02-24 17:46:55 -08:00
sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
2017-03-03 01:45:40 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
userfaultfd: hugetlbfs: gup: support VM_FAULT_RETRY
2017-02-22 16:41:28 -08:00
vmbus: constify parameters where possible
2017-02-14 10:20:35 -08:00
sched/headers: Prepare for the removal of <linux/rtmutex.h> from <linux/sched.h>
2017-03-02 08:42:32 +01:00
block: fold cmd_type into the REQ_OP_ space
2017-01-31 14:00:44 -07:00
idr: Return the deleted entry from idr_remove
2017-02-13 21:44:03 -05:00
nl80211: add HT/VHT capabilities to AP parameters
2017-02-08 10:06:24 +01:00
bridge: uapi: add per vlan tunnel info
2017-02-03 15:21:21 -05:00
tap: Renaming tap related APIs, data structures, macros
2017-02-11 20:59:41 -05:00
tap: tap as an independent module
2017-02-11 20:59:41 -05:00
arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX
2017-02-07 12:32:52 -08:00
sched/headers: Move the 'root_task_group' declaration to <linux/sched/autogroup.h>
2017-03-03 01:43:47 +01:00
Merge branches 'iommu/fixes', 'arm/exynos', 'arm/renesas', 'arm/smmu', 'arm/mediatek', 'arm/core', 'x86/vt-d' and 'core' into next
2017-02-10 15:13:10 +01:00
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -08:00
Merge branches 'iommu/fixes', 'arm/exynos', 'arm/renesas', 'arm/smmu', 'arm/mediatek', 'arm/core', 'x86/vt-d' and 'core' into next
2017-02-10 15:13:10 +01:00
include/linux/iopoll.h: include <linux/ktime.h> instead of <linux/hrtimer.h>
2017-02-24 17:46:56 -08:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 10:52:23 -08:00
time: Introduce jiffies64_to_nsecs()
2017-02-01 09:13:45 +01:00
There was some breakage with the changes for jump labels in the 4.11 merge
2017-03-07 09:37:28 -08:00
kasan, sched/headers: Remove <linux/sched.h> from <linux/kasan.h>
2017-03-03 01:45:32 +01:00
scripts/spelling.txt: add "followings" pattern and fix typo instances
2017-02-27 18:43:47 -08:00
linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors
2017-02-24 17:46:57 -08:00
sched/cputime: Push time to account_system_time() in nsecs
2017-02-01 09:13:58 +01:00
KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()
2017-03-02 10:09:00 +11:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/coredump.h>
2017-03-02 08:42:28 +01:00
kprobes: move kprobe declarations to asm-generic/kprobes.h
2017-02-27 18:43:45 -08:00
kref: Implement 'struct kref' using refcount_t
2017-02-10 09:04:19 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/coredump.h>
2017-03-02 08:42:28 +01:00
kvm: convert kvm.users_count from atomic_t to refcount_t
2017-03-01 17:03:21 +01:00
Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2017-02-21 17:21:32 -08:00
nfit, libnvdimm: fix interleave set cookie calculation
2017-03-01 00:49:42 -08:00
lightnvm: allow targets to use sysfs
2017-01-31 08:32:13 -07:00
list: introduce list_for_each_entry_from_reverse helper
2017-02-03 16:35:42 -05:00
give up on gcc ilog2() constant optimizations
2017-03-02 12:17:22 -08:00
Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/selinux into next
2017-02-10 10:28:49 +11:00
lib/lz4: remove back-compat wrappers
2017-02-24 17:46:57 -08:00
net: phy: marvell: Add support for 88e1545 PHY
2017-02-02 22:05:28 -05:00
net: phy: Allow pre-declaration of MDIO devices
2017-02-07 10:51:46 -05:00
memblock: embed memblock type name within struct memblock_type
2017-02-24 17:46:54 -08:00
slab: use memcg_kmem_cache_wq for slab destruction operations
2017-02-22 16:41:27 -08:00
memory-hotplug: use dev_online for memhp_auto_online
2017-02-24 17:46:56 -08:00
base/memory, hotplug: fix a kernel oops in show_valid_zones()
2017-02-03 14:13:19 -08:00
mm/migration: make isolate_movable_page always defined
2017-02-24 17:46:55 -08:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2017-02-23 09:54:19 -08:00
mm: remove shmem_mapping() shmem_zero_setup() duplicates
2017-02-24 17:46:56 -08:00
mm: vmscan: move dirty pages out of the way until they're flushed
2017-02-24 17:46:54 -08:00
mm/headers, sched/headers: Move task related MM types from <linux/mm_types.> to <linux/mm_types_task.h>
2017-03-03 01:43:48 +01:00
sched/headers, mm: Move 'struct tlbflush_unmap_batch' from <linux/sched.h> to <linux/mm_types_task.h>
2017-03-03 01:45:25 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
mm: vmscan: scan dirty pages even in laptop mode
2017-02-24 17:46:54 -08:00
net: phy: Allow pre-declaration of MDIO devices
2017-02-07 10:51:46 -05:00
Modules updates for v4.11
2017-02-22 17:08:33 -08:00
fs: Better permission checking for submounts
2017-02-02 04:36:12 +13:00
pci-v4.11-changes
2017-02-23 11:53:22 -08:00
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-02-20 13:23:30 -08:00
net: remove support for per driver ndo_busy_poll()
2017-02-03 17:28:29 -05:00
net: solve a NAPI race
2017-03-01 09:50:58 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
sched/headers: Move softlockup detector watchdog methods to <linux/nmi.h>
2017-03-03 01:43:38 +01:00
nvme-rdma: move nvme cm status helper to .h file
2017-02-22 13:34:00 -07:00
nvme: Enable autonomous power state transitions
2017-02-22 13:34:00 -07:00
DeviceTree updates for 4.11:
2017-02-22 19:23:14 -08:00
of: introduce of_graph_get_remote_node
2017-02-15 08:53:32 -06:00
iommu: Remove iommu_register_instance interface
2017-02-10 14:54:37 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
mm: fix <linux/pagemap.h> stray kernel-doc notation
2017-02-22 16:41:30 -08:00
lib: Introduce priority array area manager
2017-02-03 16:35:42 -05:00
PCI: add an API to get node from vector
2017-03-02 08:56:04 -07:00
PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
2017-02-09 09:13:20 -06:00
perf/core: Allow kernel filters on CPU events
2017-02-10 09:08:09 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
net: phy: Check phydev->drv
2017-02-20 10:15:11 -05:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
procfs: use an enum for possible hidepid values
2017-02-24 17:46:56 -08:00
PM / core / docs: Convert sleep states API document to reST
2017-02-06 11:25:55 -07:00
PM / Domains: Provide dummy governors if CONFIG_PM_GENERIC_DOMAINS=n
2017-02-09 14:29:27 +01:00
PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API
2017-02-09 22:52:17 +01:00
Merge branches 'pm-cpuidle', 'pm-cpufreq' and 'pm-sleep'
2017-03-03 00:43:11 +01:00
timers/itimer: Convert internal cputime_t units to nsec
2017-02-01 09:13:55 +01:00
sched/headers: Move the PREEMPT_COUNT defines from <linux/sched.h> to <linux/preempt.h>
2017-03-03 01:43:47 +01:00
printk: introduce per-cpu safe_print seq buffer
2017-02-08 11:07:11 +01:00
device property: export code duplicating array of property entries
2017-02-07 13:21:15 +01:00
ptr_ring: fix race conditions when resizing
2017-02-20 10:27:56 -05:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
radix-tree: Fix __rcu annotations
2017-02-13 21:44:09 -05:00
rbtree: use designated initializers
2017-02-24 17:46:57 -08:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
rcu: Separate the RCU synchronization types and APIs into <linux/rcupdate_wait.h>
2017-03-02 08:42:24 +01:00
sched/wait, rcuwait: Fix typo in comment
2017-02-01 09:17:51 +01:00
locking/refcounts: Add missing kernel.h header to have UINT_MAX defined
2017-02-24 09:02:10 +01:00
Merge remote-tracking branches 'regmap/topic/doc' and 'regmap/topic/rbtree' into regmap-next
2017-02-03 12:34:59 +01:00
remoteproc: Drop firmware_loading_complete
2017-01-30 14:18:54 -08:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
mm: drop page_check_address{,_transhuge}
2017-02-24 17:46:55 -08:00
mm: add arch-independent testcases for RODATA
2017-02-27 18:43:48 -08:00
sched/headers: Clean up <linux/sched.h>
2017-03-03 01:45:41 +01:00
sctp: add support for generating stream reconf resp chunk
2017-02-19 18:17:59 -05:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
block/sed-opal: Introduce free_opal_dev to free the structure and clean up state
2017-02-23 11:55:41 -07:00
ipc/sem: add hysteresis
2017-02-27 18:43:46 -08:00
serdev: add a tty port controller driver
2017-02-03 10:17:02 +01:00
mm: remove shmem_mapping() shmem_zero_setup() duplicates
2017-02-24 17:46:56 -08:00
signals: Move signal data types from <linux/signal.h> to <linux/signal_types.h>
2017-03-03 01:43:48 +01:00
signals: Move signal data types from <linux/signal.h> to <linux/signal_types.h>
2017-03-03 01:43:48 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>
2017-03-02 08:42:27 +01:00
slab: remove synchronous synchronize_sched() from memcg cache deactivation path
2017-02-22 16:41:27 -08:00
slub: separate out sysfs_slab_release() from sysfs_slab_remove()
2017-02-22 16:41:27 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
net: stmmac: Remove the bus_setup function pointer
2017-02-08 15:11:22 -05:00
mm/swap: add cache for swap slots allocation
2017-02-22 16:41:30 -08:00
mm/swap: skip readahead only when swap slot cache is enabled
2017-02-22 16:41:30 -08:00
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
proc/sysctl: prune stale dentries during unregistering
2017-02-13 17:00:06 +13:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
tcp: add tcp_mss_clamp() helper
2017-02-03 11:19:34 -05:00
sched/headers, timekeeping: Move the timer tick function prototypes to <linux/timekeeping.h>
2017-03-03 01:45:25 +01:00
sched/headers, timekeeping: Move the timer tick function prototypes to <linux/timekeeping.h>
2017-03-03 01:45:25 +01:00
sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h>
2017-03-03 01:45:39 +01:00
tracing: add __print_flags_u64()
2017-02-22 16:41:26 -08:00
tty_port: Add port client functions
2017-02-03 10:17:02 +01:00
ucount: Remove the atomicity from ucount->count
2017-03-06 15:26:37 -06:00
userfaultfd: non-cooperative: rollback userfaultfd_exit
2017-03-09 17:01:09 -08:00
afs: Move UUID struct to linux/uuid.h
2017-02-10 16:34:17 +00:00
virtio_net: refactor freeze/restore logic into virtnet reset logic
2017-02-07 10:05:12 -05:00
virtio: provide a method to get the IRQ affinity mask for a virtqueue
2017-02-27 20:54:05 +02:00
mm, compaction: add vmstats for kcompactd work
2017-02-22 16:41:29 -08:00
mm/vmacache, sched/headers: Introduce 'struct vmacache' and move it from <linux/sched.h> to <linux/mm_types>
2017-03-02 08:42:25 +01:00
vmw_vmci: switch to pci_irq_alloc_vectors
2017-02-03 11:49:06 +01:00
sched/headers: fix up header file dependency on <linux/sched/signal.h>
2017-03-08 10:36:03 -08:00
watchdog: Introduce watchdog_stop_on_unregister helper
2017-02-24 14:00:23 -08:00
workqueue: avoid clang warning
2017-02-02 15:22:18 -05:00
mm: vmscan: kick flushers when we encounter dirty pages on the LRU
2017-02-24 17:46:54 -08:00
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