linux/kernel
Steven Rostedt (VMware) 6977074c57 uprobes: Use synchronize_rcu() not synchronize_sched()
commit 016f8ffc48 upstream.

While debugging another bug, I was looking at all the synchronize*()
functions being used in kernel/trace, and noticed that trace_uprobes was
using synchronize_sched(), with a comment to synchronize with
{u,ret}_probe_trace_func(). When looking at those functions, the data is
protected with "rcu_read_lock()" and not with "rcu_read_lock_sched()". This
is using the wrong synchronize_*() function.

Link: http://lkml.kernel.org/r/20180809160553.469e1e32@gandalf.local.home

Cc: stable@vger.kernel.org
Fixes: 70ed91c6ec ("tracing/uprobes: Support ftrace_event_file base multibuffer")
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-09 20:04:34 +02:00
..
bpf bpf: fix references to free_bpf_prog_info() in comments 2018-08-06 16:24:37 +02:00
configs
debug kdb: make "mdr" command repeat 2018-05-30 07:49:17 +02:00
events perf/core: Fix perf_output_read_group() 2018-05-30 07:49:12 +02:00
gcov gcov: disable for COMPILE_TEST 2018-01-23 19:50:10 +01:00
irq genirq: Make force irq threading setup more robust 2018-08-09 12:19:27 +02:00
livepatch
locking locking/lockdep: Do not record IRQ state within lockdep code 2018-08-24 13:26:55 +02:00
power PM / hibernate: Fix oops at snapshot_write() 2018-07-17 11:31:46 +02:00
printk braille-console: Fix value returned by _braille_console_setup 2018-03-22 09:23:23 +01:00
rcu rcu: Allow for page faults in NMI handlers 2017-10-18 09:20:41 +02:00
sched sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning 2018-05-30 07:49:08 +02:00
time nohz: Fix local_timer_softirq_pending() 2018-08-09 12:19:27 +02:00
trace uprobes: Use synchronize_rcu() not synchronize_sched() 2018-09-09 20:04:34 +02:00
.gitignore
acct.c kernel/acct.c: fix the acct->needcheck check in check_free_space() 2018-01-10 09:27:08 +01:00
async.c kernel/async.c: revert "async: simplify lowest_in_progress()" 2018-02-16 20:09:45 +01:00
audit_fsnotify.c
audit_tree.c
audit_watch.c audit: Fix use after free in audit_remove_watch_rule() 2017-08-24 17:02:35 -07:00
audit.c audit: return on memory error to avoid null pointer dereference 2018-05-30 07:49:16 +02:00
audit.h
auditfilter.c audit: allow not equal op for audit by executable 2018-08-06 16:24:38 +02:00
auditsc.c audit: allow not equal op for audit by executable 2018-08-06 16:24:38 +02:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup_pids.c
cgroup.c cgroup, kthread: close race window where new kthreads can be migrated to non-root cgroups 2017-04-21 09:30:04 +02:00
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c
cpuset.c sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs 2017-10-12 11:27:35 +02:00
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() 2018-05-26 08:48:51 +02:00
extable.c kernel/extable.c: mark core_kernel_text notrace 2017-07-21 07:44:56 +02:00
fork.c kaiser: stack map PAGE_SIZE at THREAD_SIZE-PAGE_SIZE 2018-01-05 15:44:23 +01:00
freezer.c
futex_compat.c
futex.c futex: futex_wake_op, fix sign_extend32 sign bits 2018-05-26 08:48:51 +02:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:27:10 +01:00
hung_task.c
irq_work.c
jump_label.c jump_label: Invoke jump_label_test() via early_initcall() 2017-12-16 10:33:55 +01:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c kprobes: Make list and blacklist root user read only 2018-09-05 09:18:40 +02:00
ksysfs.c
kthread.c kthread, tracing: Don't expose half-written comm when creating kthreads 2018-09-09 20:04:34 +02:00
latencytop.c
Makefile
membarrier.c Fix: Disable sys_membarrier when nohz_full is enabled 2017-03-12 06:37:26 +01:00
memremap.c
module_signing.c
module-internal.h
module.c module/retpoline: Warn about missing retpoline in module 2018-02-25 11:03:52 +01:00
notifier.c
nsproxy.c
padata.c padata: free correct variable 2017-05-20 14:27:02 +02:00
panic.c kernel/panic.c: add missing \n 2017-07-05 14:37:19 +02:00
params.c
pid_namespace.c pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processes 2017-05-25 14:30:11 +02:00
pid.c pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid() 2018-04-13 19:50:03 +02:00
profile.c profile: hide unused functions when !CONFIG_PROC_FS 2018-02-25 11:03:44 +01:00
ptrace.c ptrace: Properly initialize ptracer_cred on fork 2017-06-14 13:16:20 +02:00
range.c
reboot.c
relay.c kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE 2018-05-30 07:49:00 +02:00
resource.c resource: fix integer overflow at reallocation 2018-04-24 09:32:05 +02:00
seccomp.c seccomp: Move speculation migitation control to arch code 2018-07-25 10:18:27 +02:00
signal.c kernel/signal.c: avoid undefined behaviour in kill_something_info 2018-05-30 07:48:52 +02:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c nospec: Allow getting/setting on non-current task 2018-07-25 10:18:26 +02:00
sysctl_binary.c
sysctl.c sched/sysctl: Check user input value of sysctl_sched_time_avg 2018-09-05 09:18:33 +02:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c tracepoint: Do not warn on ENOMEM 2018-05-16 10:06:47 +02:00
tsacct.c
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:27:10 +01:00
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c
workqueue_internal.h workqueue: Fix NULL pointer dereference 2017-11-15 17:13:11 +01:00
workqueue.c workqueue: use put_device() instead of kfree() 2018-05-30 07:49:04 +02:00