Tahsin Erdogan 5e27e3e139 tracing: Fix trace_pipe behavior for instance traces ... commit 75df6e688ccd517e339a7c422ef7ad73045b18a2 upstream. When reading data from trace_pipe, tracing_wait_pipe() performs a check to see if tracing has been turned off after some data was read. Currently, this check always looks at global trace state, but it should be checking the trace instance where trace_pipe is located at. Because of this bug, cat instances/i1/trace_pipe in the following script will immediately exit instead of waiting for data: cd /sys/kernel/debug/tracing echo 0 > tracing_on mkdir -p instances/i1 echo 1 > instances/i1/tracing_on echo 1 > instances/i1/events/sched/sched_process_exec/enable cat instances/i1/trace_pipe Link: http://lkml.kernel.org/r/20170917102348.1615-1-tahsin@google.com Fixes: 10246fa35d4f ("tracing: give easy way to clear trace buffer") Signed-off-by: Tahsin Erdogan <tahsin@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>		2019-07-27 21:45:52 +02:00
..
cpu	idle: add a check for need_resched() after rcu_idle_enter	2016-10-03 20:28:27 -07:00
debug
events	perf/core: Fix group {cpu,task} validation	2019-07-27 21:45:02 +02:00
gcov
irq	This is the 3.10.99 stable release	2017-04-18 17:17:46 +02:00
locking	Import latest Samsung release	2017-04-18 03:43:52 +02:00
power	PM / sleep: fix device reference leak in test_suspend	2019-07-27 21:42:48 +02:00
rcu	rcu: Don't disable CPU hotplug during OOM notifiers	2016-01-06 23:11:06 -08:00
sched	sched/topology: Fix overlapping sched_group_mask	2019-07-27 21:45:20 +02:00
time	alarmtimer: Rate limit periodic intervals	2019-07-27 21:44:49 +02:00
trace	tracing: Fix trace_pipe behavior for instance traces	2019-07-27 21:45:52 +02:00
.gitignore
acct.c
async.c
audit.c	audit: Partially remove Samsung changes	2018-02-06 13:12:28 +01:00
audit.h	Import latest Samsung release	2017-04-18 03:43:52 +02:00
audit_tree.c
audit_watch.c	audit: Fix use after free in audit_remove_watch_rule()	2019-07-27 21:45:01 +02:00
auditfilter.c
auditsc.c	Import latest Samsung release	2017-04-18 03:43:52 +02:00
backtracetest.c
bounds.c
capability.c
cgroup.c	cgroup: prefer %pK to %p	2016-12-06 09:24:09 -08:00
cgroup_freezer.c
compat.c
configs.c
context_tracking.c
cpu.c	cpu: send KOBJ_ONLINE event when enabling cpus	2017-07-24 01:09:04 -07:00
cpu_pm.c
cpuset.c	cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags	2019-07-27 21:44:59 +02:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c	ANDROID: exec_domains: Disable request_module() call for personalities	2016-05-18 14:34:40 +05:30
exit.c	kernel: Only expose su when daemon is running	2017-05-15 14:43:52 +00:00
extable.c	kernel/extable.c: mark core_kernel_text notrace	2019-07-27 21:44:25 +02:00
fork.c	mm: migrate: prevent racy access to tlb_flush_pending	2019-07-27 21:45:21 +02:00
freezer.c
futex.c	futex: Add missing error handling to FUTEX_REQUEUE_PI	2019-07-27 21:44:02 +02:00
futex_compat.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 11:57:47 -08:00
groups.c
hrtimer.c	time: Remove CONFIG_TIMER_STATS	2017-04-22 23:02:59 +02:00
hung_task.c
irq_work.c	irq_work: Remove BUG_ON in irq_work_run()	2016-01-07 00:42:12 -08:00
itimer.c
jump_label.c
kallsyms.c	Import latest Samsung release	2017-04-18 03:43:52 +02:00
kcmp.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 11:57:47 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks	Import latest Samsung release	2017-04-18 03:43:52 +02:00
Kconfig.preempt
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c	kthread: Fix the race condition when kthread is parked	2015-06-04 17:43:41 -07:00
latencytop.c
Makefile	UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing	2016-05-18 14:36:10 +05:30
modsign_pubkey.c
module-internal.h	UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing	2016-05-18 14:36:10 +05:30
module.c	module: Invalidate signatures on force-loaded modules	2019-07-27 21:42:00 +02:00
module_signing.c	UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing	2016-05-18 14:36:10 +05:30
notifier.c
nsproxy.c
padata.c	padata: avoid race in reordering	2019-07-27 21:44:05 +02:00
panic.c	printk: do cond_resched() between lines while outputting to consoles	2019-07-27 21:41:46 +02:00
params.c	kernel/params.c: align add_sysfs_param documentation with code	2019-07-27 21:45:35 +02:00
pid.c	BACKPORT: FROMLIST: pids: make task_tgid_nr_ns() safe	2018-05-26 00:39:33 +02:00
pid_namespace.c
posix-cpu-timers.c
posix-timers.c
printk.c	printk: use rcuidle console tracepoint	2019-07-27 21:44:09 +02:00
profile.c
ptrace.c	ptrace: change __ptrace_unlink() to clear ->ptrace under ->siglock	2019-07-27 21:45:46 +02:00
range.c
relay.c
res_counter.c
resource.c	This is the 3.10.99 stable release	2017-04-18 17:17:46 +02:00
seccomp.c	UPSTREAM: seccomp: cap SECCOMP_RET_ERRNO data to MAX_ERRNO	2016-05-18 14:36:06 +05:30
signal.c	signal: Only reschedule timers on signals timers have sent	2019-07-27 21:44:51 +02:00
smp.c	Import latest Samsung release	2017-04-18 03:43:52 +02:00
smpboot.c
smpboot.h
softirq.c	Import latest Samsung release	2017-04-18 03:43:52 +02:00
stacktrace.c
stop_machine.c
sys.c	Import latest Samsung release	2017-04-18 03:43:52 +02:00
sys_ni.c
sysctl.c	sched/sysctl: Check user input value of sysctl_sched_time_avg	2019-07-27 21:45:34 +02:00
sysctl_binary.c
system_certificates.S	UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing	2016-05-18 14:36:10 +05:30
system_keyring.c	UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing	2016-05-18 14:36:10 +05:30
task_work.c
taskstats.c
test_kprobes.c
time.c
timeconst.bc
timer.c	timers: Use proper base migration in add_timer_on()	2019-07-27 21:42:23 +02:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c	UPSTREAM: capabilities: ambient capabilities	2018-02-06 13:12:16 +01:00
utsname.c
utsname_sysctl.c
watchdog.c
workqueue.c	workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq	2019-07-27 21:45:23 +02:00
workqueue_internal.h