Andy Lutomirski 7cc78f8fa0 context_tracking: Restore previous state in schedule_user ...

It appears that some SCHEDULE_USER (asm for schedule_user) callers
in arch/x86/kernel/entry_64.S are called from RCU kernel context,
and schedule_user will return in RCU user context.  This causes RCU
warnings and possible failures.

This is intended to be a minimal fix suitable for 3.18.

Reported-and-tested-by: Dave Jones <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Frédéric Weisbecker <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2014-12-03 20:55:58 -08:00

..

bpf

bpf: split eBPF out of NET

2014-10-27 19:09:59 -04:00

configs

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debug

kdb: replace strnicmp with strncasecmp

2014-10-14 02:18:25 +02:00

events

uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME

2014-11-23 14:25:28 -08:00

gcov

gcov: add ARM64 to GCOV_PROFILE_ALL

2014-10-29 16:33:14 -07:00

irq

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

locking

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

2014-10-13 15:51:40 +02:00

power

PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set

2014-11-08 22:30:05 +01:00

printk

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

rcu

rcu: Make rcu_barrier() understand about missing rcuo kthreads

2014-10-28 13:24:13 -07:00

sched

context_tracking: Restore previous state in schedule_user

2014-12-03 20:55:58 -08:00

time

sched/cputime: Fix cpu_timer_sample_group() double accounting

2014-11-16 10:04:18 +01:00

trace

tracing: Do not risk busy looping in buffer splice

2014-11-10 16:47:31 -05:00

.gitignore

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acct.c

acct: eliminate compile warning

2014-10-09 22:26:04 -04:00

async.c

kernel/async.c: switch to pr_foo()

2014-10-09 22:26:04 -04:00

audit_tree.c

audit: keep inode pinned

2014-11-11 14:20:22 -05:00

audit_watch.c

audit: invalid op= values for rules

2014-09-23 16:37:53 -04:00

audit.c

Merge branch 'stable-3.18' of git://git.infradead.org/users/pcmoore/audit

2014-11-13 09:36:39 -08:00

audit.h

audit: reduce scope of audit_log_fcaps

2014-09-23 16:37:51 -04:00

auditfilter.c

Merge git://git.infradead.org/users/eparis/audit

2014-10-19 16:25:56 -07:00

auditsc.c

Merge git://git.infradead.org/users/eparis/audit

2014-10-19 16:25:56 -07:00

backtracetest.c

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bounds.c

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capability.c

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cgroup_freezer.c

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cgroup.c

Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-10 07:26:02 -04:00

compat.c

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configs.c

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context_tracking.c

sched: stop the unbound recursion in preempt_schedule_context()

2014-10-28 10:46:05 +01:00

cpu_pm.c

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cpu.c

rcu: More on deadlock between CPU hotplug and expedited grace periods

2014-10-23 07:51:17 -07:00

cpuset.c

Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2014-10-10 07:24:40 -04:00

crash_dump.c

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cred.c

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delayacct.c

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dma.c

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elfcore.c

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exec_domain.c

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exit.c

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

2014-10-13 16:23:15 +02:00

extable.c

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fork.c

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

2014-10-13 16:23:15 +02:00

freezer.c

freezer: remove obsolete comments in __thaw_task()

2014-10-21 23:44:20 +02:00

futex_compat.c

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futex.c

futex: Fix a race condition between REQUEUE_PI and task death

2014-10-26 16:16:18 +01:00

groups.c

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hung_task.c

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irq_work.c

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

jump_label.c

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kallsyms.c

kernel/kallsyms.c: use __seq_open_private()

2014-10-14 02:18:16 +02:00

kcmp.c

kcmp: fix standard comparison bug

2014-09-10 15:42:12 -07:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kexec.c

kexec: remove the unused function parameter

2014-10-14 02:18:21 +02:00

kmod.c

kernel/kmod: fix use-after-free of the sub_info structure

2014-10-29 16:33:14 -07:00

kprobes.c

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ksysfs.c

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kthread.c

kernel/kthread.c: partial revert of 81c98869fa ("kthread: ensure locality of task_struct allocations")

2014-10-09 22:25:51 -04:00

latencytop.c

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Makefile

bpf: split eBPF out of NET

2014-10-27 19:09:59 -04:00

module_signing.c

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module-internal.h

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module.c

Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

2014-10-18 10:24:26 -07:00

notifier.c

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nsproxy.c

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padata.c

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panic.c

kernel/panic.c: update comments for print_tainted

2014-11-13 16:17:06 -08:00

params.c

kernel/param: consolidate __{start,stop}___param[] in <linux/moduleparam.h>

2014-10-14 02:18:28 +02:00

pid_namespace.c

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pid.c

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profile.c

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ptrace.c

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range.c

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reboot.c

kernel: add support for kernel restart handler call chain

2014-09-26 00:00:06 -07:00

relay.c

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res_counter.c

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resource.c

x86: optimize resource lookups for ioremap

2014-10-14 02:18:22 +02:00

seccomp.c

Merge branch 'x86-seccomp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-10-14 02:27:06 +02:00

signal.c

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smp.c

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

smpboot.c

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smpboot.h

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softirq.c

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

stacktrace.c

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stop_machine.c

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sys_ni.c

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

2014-10-08 21:40:54 -04:00

sys.c

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

2014-10-13 16:23:15 +02:00

sysctl_binary.c

Merge tag 'dmaengine-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine

2014-10-07 20:39:25 -04:00

sysctl.c

sched/fair: Fix division by zero sysctl_numa_balancing_scan_size

2014-10-28 10:46:04 +01:00

system_certificates.S

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system_keyring.c

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task_work.c

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taskstats.c

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test_kprobes.c

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torture.c

torture: Address race in module cleanup

2014-09-16 13:41:06 -07:00

tracepoint.c

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tsacct.c

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uid16.c

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up.c

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user_namespace.c

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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

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

workqueue_internal.h

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workqueue.c

workqueue: Use cond_resched_rcu_qs macro

2014-10-06 05:58:26 -07:00