Peter Zijlstra 177c53d943 stop_machine: Fix^2 race between stop_two_cpus() and stop_cpus() ...

We must use smp_call_function_single(.wait=1) for the
irq_cpu_stop_queue_work() to ensure the queueing is actually done under
stop_cpus_lock. Without this we could have dropped the lock by the time
we do the queueing and get the race we tried to fix.

Fixes: 7053ea1a34 ("stop_machine: Fix race between stop_two_cpus() and stop_cpus()")

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140228123905.GK3104@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2014-03-11 11:33:47 +01:00

..

cpu

sched/preempt: Fix up missed PREEMPT_NEED_RESCHED folding

2014-01-13 17:38:55 +01:00

debug

kgdb/kdb: Fix no KDB config problem

2014-01-25 08:55:09 +01:00

events

perf: Fix hotplug splat

2014-02-27 12:38:03 +01:00

gcov

gcov: reuse kbasename helper

2013-11-13 12:09:34 +09:00

irq

genirq: Include missing header file in irqdomain.c

2014-02-27 13:29:35 +01:00

locking

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

2014-01-20 10:42:08 -08:00

power

arm, pm, vmpressure: add missing slab.h includes

2014-02-03 13:24:01 -05:00

printk

printk: fix syslog() overflowing user buffer

2014-02-17 12:24:45 -08:00

rcu

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2014-01-28 08:38:04 -08:00

sched

sched/deadline: Deny unprivileged users to set/change SCHED_DEADLINE policy

2014-03-11 11:33:46 +01:00

time

sched_clock: Prevent callers from seeing half-updated data

2014-02-19 17:07:22 +01:00

trace

tracing: Do not add event files for modules that fail tracepoints

2014-03-03 21:11:05 -05:00

.gitignore

Ignore generated file kernel/x509_certificate_list

2013-12-10 18:21:34 +00:00

acct.c

…

async.c

…

audit_tree.c

inotify: Fix reporting of cookies for inotify events

2014-02-18 11:17:17 +01:00

audit_watch.c

inotify: Fix reporting of cookies for inotify events

2014-02-18 11:17:17 +01:00

audit.c

audit: fix location of __net_initdata for audit_net_ops

2014-01-17 17:14:32 -05:00

audit.h

audit: Convert int limit uses to u32

2014-01-14 14:54:00 -05:00

auditfilter.c

audit: log on errors from filter user rules

2014-01-13 22:32:31 -05:00

auditsc.c

execve: use 'struct filename *' for executable name passing

2014-02-05 12:54:53 -08:00

backtracetest.c

…

bounds.c

mm: do not allocate page->ptl dynamically, if spinlock_t fits to long

2013-12-20 12:25:45 -08:00

capability.c

audit: Simplify and correct audit_log_capset

2014-01-13 22:26:48 -05:00

cgroup_freezer.c

cgroup: replace cftype->read_seq_string() with cftype->seq_show()

2013-12-05 12:28:04 -05:00

cgroup.c

cgroup: update cgroup_enable_task_cg_lists() to grab siglock

2014-02-18 18:23:18 -05:00

compat.c

…

configs.c

…

context_tracking.c

context_tracking: Wrap static key check into more intuitive function name

2013-12-02 20:43:14 +01:00

cpu_pm.c

…

cpu.c

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

2013-11-14 16:55:11 +09:00

cpuset.c

cpuset: fix a race condition in __cpuset_node_allowed_softwall()

2014-02-27 09:39:54 -05:00

crash_dump.c

…

cred.c

…

delayacct.c

kernel/delayacct.c: remove redundant checking in __delayacct_add_tsk()

2013-11-13 12:09:12 +09:00

dma.c

…

elfcore.c

switch elf_core_write_extra_phdrs() to dump_emit()

2013-11-09 00:16:23 -05:00

exec_domain.c

…

exit.c

introduce for_each_thread() to replace the buggy while_each_thread()

2014-01-21 16:19:46 -08:00

extable.c

kernel/extable: fix address-checks for core_kernel and init areas

2013-11-28 09:49:41 -08:00

fork.c

exec: kill task_struct->did_exec

2014-01-23 16:37:02 -08:00

freezer.c

libata, freezer: avoid block device removal while system is frozen

2013-12-19 13:50:32 -05:00

futex_compat.c

…

futex.c

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

2014-01-20 10:42:08 -08:00

groups.c

userns: Kill nsown_capable it makes the wrong thing easy

2013-08-30 23:44:11 -07:00

hrtimer.c

sched/deadline: Add SCHED_DEADLINE structures & implementation

2014-01-13 13:41:06 +01:00

hung_task.c

hung_task: Display every hung task warning

2014-01-25 12:13:33 +01:00

irq_work.c

…

itimer.c

…

jump_label.c

static_key: WARN on usage before jump_label_init was called

2013-10-19 19:45:35 -04:00

kallsyms.c

…

kcmp.c

…

Kconfig.freezer

…

Kconfig.hz

kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS

2013-11-15 09:32:22 +09:00

Kconfig.locks

…

Kconfig.preempt

…

kexec.c

kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()

2014-01-27 21:02:40 -08:00

kmod.c

execve: use 'struct filename *' for executable name passing

2014-02-05 12:54:53 -08:00

kprobes.c

kprobes: use KSYM_NAME_LEN to size identifier buffers

2013-11-13 12:09:26 +09:00

ksysfs.c

kdump: fix exported size of vmcoreinfo note

2014-01-23 16:37:03 -08:00

kthread.c

kthread: make kthread_create() killable

2013-11-13 12:08:59 +09:00

latencytop.c

…

Makefile

KEYS: Remove files generated when SYSTEM_TRUSTED_KEYRING=y

2013-12-13 15:59:11 +00:00

module_signing.c

keys: change asymmetric keys to use common hash definitions

2013-10-25 17:15:18 -04:00

module-internal.h

KEYS: Separate the kernel signature checking keyring from module signing

2013-09-25 17:17:01 +01:00

module.c

module: Add missing newline in printk call.

2014-01-21 09:59:16 +10:30

notifier.c

…

nsproxy.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2013-09-07 14:35:32 -07:00

padata.c

padata: Fix wrong usage of rcu_dereference()

2013-12-05 21:28:42 +08:00

panic.c

panic: Make panic_timeout configurable

2013-11-26 12:12:26 +01:00

params.c

params: improve standard definitions

2013-12-04 14:09:46 +10:30

pid_namespace.c

pid_namespace: make freeing struct pid_namespace rcu-delayed

2013-10-24 23:43:29 -04:00

pid.c

pidns: fix free_pid() to handle the first fork failure

2013-09-30 14:31:03 -07:00

posix-cpu-timers.c

posix-timers: Convert abuses of BUG_ON to WARN_ON

2013-12-09 16:56:29 +01:00

posix-timers.c

…

profile.c

mm: fix GFP_THISNODE callers and clarify

2014-03-10 17:26:19 -07:00

ptrace.c

exec/ptrace: fix get_dumpable() incorrect tests

2013-11-13 12:09:33 +09:00

range.c

…

reboot.c

kexec: migrate to reboot cpu

2013-12-18 19:04:50 -08:00

relay.c

…

res_counter.c

memcg: reduce function dereference

2013-09-12 15:38:02 -07:00

resource.c

…

seccomp.c

…

signal.c

kernel/signal.c: change do_signal_stop/do_sigaction to use while_each_thread()

2014-01-23 16:37:02 -08:00

smp.c

kernel/smp.c: remove cpumask_ipi

2014-01-30 16:56:54 -08:00

smpboot.c

…

smpboot.h

…

softirq.c

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

2014-01-31 09:02:51 -08:00

stacktrace.c

…

stop_machine.c

stop_machine: Fix^2 race between stop_two_cpus() and stop_cpus()

2014-03-11 11:33:47 +01:00

sys_ni.c

…

sys.c

kernel/sys.c: k_getrusage() can use while_each_thread()

2014-01-23 16:37:02 -08:00

sysctl_binary.c

kernel/sysctl_binary.c: use scnprintf() instead of snprintf()

2013-11-13 12:09:33 +09:00

sysctl.c

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

2014-01-31 08:59:46 -08:00

system_certificates.S

KEYS: correct alignment of system_certificate_list content in assembly file

2013-12-10 18:25:28 +00:00

system_keyring.c

KEYS: correct alignment of system_certificate_list content in assembly file

2013-12-10 18:25:28 +00:00

task_work.c

task_work: documentation

2013-09-11 15:58:27 -07:00

taskstats.c

genetlink: only pass array to genl_register_family_with_ops()

2013-11-19 16:39:05 -05:00

test_kprobes.c

…

time.c

…

timeconst.bc

…

timer.c

timer: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)

2013-11-19 14:59:50 +01:00

tracepoint.c

tracing: Do not add event files for modules that fail tracepoints

2014-03-03 21:11:05 -05:00

tsacct.c

…

uid16.c

userns: Kill nsown_capable it makes the wrong thing easy

2013-08-30 23:44:11 -07:00

up.c

kernel: provide a __smp_call_function_single stub for !CONFIG_SMP

2013-11-15 09:32:22 +09:00

user_namespace.c

user_namespace.c: Remove duplicated word in comment

2014-02-20 11:58:35 -08:00

user-return-notifier.c

…

user.c

KEYS: fix uninitialized persistent_keyring_register_sem

2013-12-13 15:59:11 +00:00

utsname_sysctl.c

…

utsname.c

userns: Kill nsown_capable it makes the wrong thing easy

2013-08-30 23:44:11 -07:00

watchdog.c

watchdog: update watchdog_thresh properly

2013-09-24 17:00:25 -07:00

workqueue_internal.h

…

workqueue.c

workqueue: ensure @task is valid across kthread_stop()

2014-02-18 16:35:20 -05:00