Dmitry Vyukov a77660d231 kcov: detect double association with a single task ... Currently KCOV_ENABLE does not check if the current task is already associated with another kcov descriptor. As the result it is possible to associate a single task with more than one kcov descriptor, which later leads to a memory leak of the old descriptor. This relation is really meant to be one-to-one (task has only one back link). Extend validation to detect such misuse. Link: http://lkml.kernel.org/r/20180122082520.15716-1-dvyukov@google.com Fixes: 5c9a8750a6 ("kernel: add kcov code coverage") Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Reported-by: Shankara Pailoor <sp3485@columbia.edu> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: syzbot <syzkaller@googlegroups.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2018-02-06 18:32:46 -08:00
..
bpf
cgroup
configs
debug
events
gcov
irq
livepatch
locking
power
printk
rcu
sched	cpumask: make cpumask_size() return "unsigned int"	2018-02-06 18:32:45 -08:00
time
trace
.gitignore
acct.c
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-06 18:32:44 -08:00
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c	cpumask: make cpumask_size() return "unsigned int"	2018-02-06 18:32:45 -08:00
configs.c
context_tracking.c
cpu.c
cpu_pm.c
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c
extable.c
fail_function.c
fork.c	kernel/fork.c: add comment about usage of CLONE_FS flags and namespaces	2018-02-06 18:32:45 -08:00
freezer.c
futex.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
futex_compat.c
groups.c
hung_task.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: detect double association with a single task	2018-02-06 18:32:46 -08:00
kexec.c
kexec_core.c
kexec_file.c
kexec_internal.h
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
Makefile
memremap.c
module-internal.h
module.c
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
pid_namespace.c
profile.c
ptrace.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
range.c
reboot.c
relay.c	kernel/relay.c: revert "kernel/relay.c: fix potential memory leak"	2018-02-06 18:32:46 -08:00
resource.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c
sysctl_binary.c
task_work.c
taskstats.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c
watchdog_hld.c
workqueue.c
workqueue_internal.h