Vladimir Davydov 4f7d461433 fork: copy mm's vm usage counters under mmap_sem ...

If a forking process has a thread calling (un)mmap (silly but still),
the child process may have some of its mm's vm usage counters (total_vm
and friends) screwed up, because currently they are copied from oldmm
w/o holding any locks (memcpy in dup_mm).

This patch moves the counters initialization to dup_mmap() to be called
under oldmm->mmap_sem, which eliminates any possibility of race.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2014-08-08 15:57:23 -07:00

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bpf

net: filter: split 'struct sk_filter' into socket and bpf parts

2014-08-02 15:03:58 -07:00

debug

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events

mm: memcontrol: rewrite charge API

2014-08-08 15:57:17 -07:00

gcov

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irq

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-05 17:38:45 -07:00

locking

arch, locking: Ciao arch_mutex_cpu_relax()

2014-07-17 12:32:47 +02:00

power

Merge tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-08-06 20:34:19 -07:00

printk

kernel/printk/printk.c: fix bool assignements

2014-08-06 18:01:24 -07:00

rcu

Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-04 15:55:08 -07:00

sched

Merge tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-08-06 20:34:19 -07:00

time

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-05 17:46:42 -07:00

trace

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-05 17:46:42 -07:00

.gitignore

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acct.c

sched: Make task->start_time nanoseconds based

2014-07-23 10:18:05 -07:00

async.c

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audit_tree.c

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audit_watch.c

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audit.c

CAPABILITIES: remove undefined caps from all processes

2014-07-24 21:53:47 +10:00

audit.h

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auditfilter.c

kernel/auditfilter.c: replace count*size kmalloc by kcalloc

2014-08-06 18:01:12 -07:00

auditsc.c

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backtracetest.c

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bounds.c

page-cgroup: get rid of NR_PCG_FLAGS

2014-08-08 15:57:18 -07:00

capability.c

CAPABILITIES: remove undefined caps from all processes

2014-07-24 21:53:47 +10:00

cgroup_freezer.c

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cgroup.c

Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2014-08-04 10:11:28 -07:00

compat.c

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configs.c

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context_tracking.c

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cpu_pm.c

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cpu.c

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cpuset.c

Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2014-08-04 10:11:28 -07:00

crash_dump.c

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cred.c

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delayacct.c

delayacct: Remove braindamaged type conversions

2014-07-23 10:18:06 -07:00

dma.c

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elfcore.c

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exec_domain.c

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exit.c

kernel/exit.c: fix coding style warnings and errors

2014-08-08 15:57:22 -07:00

extable.c

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fork.c

fork: copy mm's vm usage counters under mmap_sem

2014-08-08 15:57:23 -07:00

freezer.c

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futex_compat.c

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futex.c

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groups.c

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hung_task.c

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irq_work.c

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jump_label.c

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kallsyms.c

kernel/kallsyms.c: fix %pB when there's no symbol at the address

2014-08-08 15:57:18 -07:00

kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER

2014-07-16 14:57:13 +02:00

Kconfig.preempt

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kexec.c

kexec: fix build error when hugetlbfs is disabled

2014-07-30 20:09:37 -07:00

kmod.c

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kprobes.c

kprobes: Fix "Failed to find blacklist" probing errors on ia64 and ppc64

2014-07-18 06:23:40 +02:00

ksysfs.c

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kthread.c

kthread_work: wake up worker only when the worker is idle

2014-07-28 14:07:52 -04:00

latencytop.c

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Makefile

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2014-08-06 09:38:14 -07:00

module_signing.c

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module-internal.h

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module.c

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notifier.c

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nsproxy.c

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padata.c

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panic.c

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params.c

Add module param type 'ullong'

2014-07-17 22:07:37 +02:00

pid_namespace.c

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pid.c

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profile.c

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ptrace.c

sched: Remove proliferation of wait_on_bit() action functions

2014-07-16 15:10:39 +02:00

range.c

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reboot.c

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relay.c

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res_counter.c

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resource.c

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seccomp.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2014-08-06 09:38:14 -07:00

signal.c

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smp.c

kernel/smp.c:on_each_cpu_cond(): fix warning in fallback path

2014-08-06 18:01:22 -07:00

smpboot.c

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smpboot.h

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softirq.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

seccomp: add "seccomp" syscall

2014-07-18 12:13:37 -07:00

sys.c

sched: move no_new_privs into new atomic flags

2014-07-18 12:13:38 -07:00

sysctl_binary.c

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sysctl.c

mm, hugetlb: remove hugetlb_zero and hugetlb_infinity

2014-08-06 18:01:19 -07:00

system_certificates.S

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system_keyring.c

KEYS: validate certificate trust only with builtin keys

2014-07-17 09:35:17 -04:00

task_work.c

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taskstats.c

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test_kprobes.c

kernel/test_kprobes.c: use current logging functions

2014-08-08 15:57:18 -07:00

torture.c

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tracepoint.c

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tsacct.c

sched: Make task->start_time nanoseconds based

2014-07-23 10:18:05 -07:00

uid16.c

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up.c

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user_namespace.c

proc: constify seq_operations

2014-08-08 15:57:22 -07:00

user-return-notifier.c

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user.c

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utsname_sysctl.c

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utsname.c

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watchdog.c

kernel/watchdog.c: convert printk/pr_warning to pr_foo()

2014-08-06 18:01:13 -07:00

workqueue_internal.h

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workqueue.c

Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-08-04 10:09:27 -07:00