Steven Rostedt (VMware) e8cac8b1d1 extable: Enable RCU if it is not watching in kernel_text_address() ... If kernel_text_address() is called when RCU is not watching, it can cause an RCU bug because is_module_text_address(), the is_kprobe_*insn_slot() and is_bpf_text_address() functions require the use of RCU. Only enable RCU if it is not currently watching before it calls is_module_text_address(). The use of rcu_nmi_enter() is used to enable RCU because kernel_text_address() can happen pretty much anywhere (like an NMI), and even from within an NMI. It is called via save_stack_trace() that can be called by any WARN() or tracing function, which can happen while RCU is not watching (for example, going to or coming from idle, or during CPU take down or bring up). Cc: stable@vger.kernel.org Fixes: 0be964be0 ("module: Sanitize RCU usage and locking") Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2017-09-23 16:50:20 -04:00
..
bpf	bpf: fix bpf_prog_get_info_by_fd to dump correct xlated_prog_len	2017-07-29 23:29:41 -07:00
cgroup	cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()	2017-08-02 17:16:12 -07:00
configs
debug
events	perf/core: Fix group {cpu,task} validation	2017-08-25 11:00:34 +02:00
gcov
irq	genirq/ipi: Fixup checks against nr_cpu_ids	2017-08-20 10:49:05 +02:00
livepatch
locking	Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-07-21 11:11:23 -07:00
power	mm: fix global NR_SLAB_.*CLAIMABLE counter reads	2017-08-10 15:54:06 -07:00
printk
rcu	rcu: Allow for page faults in NMI handlers	2017-09-23 16:49:42 -04:00
sched	Minor page waitqueue cleanups	2017-08-27 13:55:12 -07:00
time	timers: Fix excessive granularity of new timers after a nohz idle	2017-08-24 11:40:18 +02:00
trace	tracing: Fix trace_pipe behavior for instance traces	2017-09-19 18:33:42 -04:00
.gitignore
acct.c
async.c
audit.c	Merge branch 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit	2017-07-20 10:22:26 -07:00
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit/stable-4.13 PR 20170816	2017-08-16 16:48:34 -07:00
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c	Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-06 20:57:13 -07:00
configs.c
context_tracking.c
cpu.c	smp/hotplug: Replace BUG_ON and react useful	2017-07-11 22:25:44 +02:00
cpu_pm.c
crash_core.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: avoid undefined behaviour when calling wait4()	2017-07-10 16:32:36 -07:00
extable.c	extable: Enable RCU if it is not watching in kernel_text_address()	2017-09-23 16:50:20 -04:00
fork.c	fork: fix incorrect fput of ->exe_file causing use-after-free	2017-08-25 16:12:46 -07:00
freezer.c
futex.c	futex: Remove unnecessary warning from get_futex_key	2017-08-09 14:00:54 -07:00
futex_compat.c
groups.c	kernel/groups.c: use sort library function	2017-07-10 16:32:34 -07:00
hung_task.c
irq_work.c
jump_label.c
kallsyms.c	kernel/kallsyms.c: replace all_var with IS_ENABLED(CONFIG_KALLSYMS_ALL)	2017-07-10 16:32:34 -07:00
kcmp.c	kcmp: add KCMP_EPOLL_TFD mode to compare epoll target files	2017-07-12 16:26:01 -07:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -07:00
kexec_core.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -07:00
kexec_file.c	kexec_file: adjust declaration of kexec_purgatory	2017-07-12 16:26:02 -07:00
kexec_internal.h	kexec_file: adjust declaration of kexec_purgatory	2017-07-12 16:26:02 -07:00
kmod.c	kmod: fix wait on recursive loop	2017-08-18 15:32:01 -07:00
kprobes.c	kprobes: Ensure that jprobe probepoints are at function entry	2017-07-08 11:05:35 +02:00
ksysfs.c	kexec: move vmcoreinfo out of the kernel's .bss section	2017-07-12 16:25:59 -07:00
kthread.c
latencytop.c
Makefile	kernel/watchdog: split up config options	2017-07-12 16:26:02 -07:00
membarrier.c
memremap.c	mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory	2017-07-06 16:24:32 -07:00
module-internal.h
module.c	Modules updates for v4.13	2017-07-12 17:22:01 -07:00
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid.c	pids: make task_tgid_nr_ns() safe	2017-08-21 12:47:31 -07:00
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c
relay.c
resource.c
seccomp.c
signal.c	signal: don't remove SIGNAL_UNKILLABLE for traced tasks.	2017-08-18 15:32:02 -07:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys.c	fix a braino in compat_sys_getrlimit()	2017-07-12 09:15:00 -07:00
sys_ni.c
sysctl.c	kernel/watchdog: split up config options	2017-07-12 16:26:02 -07:00
sysctl_binary.c	kernel/sysctl_binary.c: check name array length in deprecated_sysctl_warning()	2017-07-12 16:26:00 -07:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c	kernel/watchdog: Prevent false positives with turbo modes	2017-08-18 12:35:02 +02:00
watchdog_hld.c	kernel/watchdog: Prevent false positives with turbo modes	2017-08-18 12:35:02 +02:00
workqueue.c	workqueue: Work around edge cases for calc of pool's cpumask	2017-07-28 11:05:52 -04:00
workqueue_internal.h