Andrei Vagin c7122344f9 kernel/exit.c: release ptraced tasks before zap_pid_ns_processes ... commit 8fb335e078 upstream. Currently, exit_ptrace() adds all ptraced tasks in a dead list, then zap_pid_ns_processes() waits on all tasks in a current pidns, and only then are tasks from the dead list released. zap_pid_ns_processes() can get stuck on waiting tasks from the dead list. In this case, we will have one unkillable process with one or more dead children. Thanks to Oleg for the advice to release tasks in find_child_reaper(). Link: http://lkml.kernel.org/r/20190110175200.12442-1-avagin@gmail.com Fixes: 7c8bd2322c ("exit: ptrace: shift "reap dead" code from exit_ptrace() to forget_original_parent()") Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-02-06 17:30:14 +01:00
..
bpf	bpf: fix inner map masking to prevent oob under speculation	2019-01-31 08:14:41 +01:00
cgroup	cgroup: fix CSS_TASK_ITER_PROCS	2019-01-09 17:38:45 +01:00
configs
debug	kdb: Use strscpy with destination buffer size	2018-12-01 09:37:33 +01:00
dma	dma-direct: do not include SME mask in the DMA supported check	2019-01-13 09:51:05 +01:00
events	uprobes: Fix handle_swbp() vs. unregister() + register() race once more	2018-12-08 12:59:06 +01:00
gcov
irq
livepatch
locking	locking/qspinlock, x86: Provide liveness guarantee	2018-12-21 14:15:12 +01:00
power
printk
rcu	srcu: Lock srcu_data structure in srcu_gp_start()	2019-01-13 09:51:06 +01:00
sched	sched/fair: Fix infinite loop in update_blocked_averages() by reverting a9e7f6544b	2019-01-13 09:51:09 +01:00
time	posix-cpu-timers: Unbreak timer rearming	2019-01-31 08:14:39 +01:00
trace	tracing: Fix memory leak of instance function hash filters	2018-12-19 19:19:52 +01:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c	x86/speculation: Rework SMT state change	2018-12-05 19:32:02 +01:00
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: release ptraced tasks before zap_pid_ns_processes	2019-02-06 17:30:14 +01:00
extable.c
fail_function.c
fork.c	fork: record start_time late	2019-01-13 09:51:04 +01:00
freezer.c
futex_compat.c
futex.c	futex: Cure exit race	2018-12-29 13:37:57 +01:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kernel/kcov.c: mark funcs in __sanitizer_cov_trace_pc() as notrace	2018-12-17 09:24:41 +01:00
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
Makefile
memremap.c	mm, devm_memremap_pages: add MEMORY_DEVICE_PRIVATE support	2019-01-13 09:51:04 +01:00
module_signing.c
module-internal.h
module.c
notifier.c
nsproxy.c
padata.c
panic.c	panic: avoid deadlocks in re-entrant console drivers	2018-12-29 13:37:57 +01:00
params.c
pid_namespace.c
pid.c	Fix failure path in alloc_pid()	2019-01-13 09:51:06 +01:00
profile.c
ptrace.c	ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS	2018-12-05 19:32:03 +01:00
range.c
reboot.c
relay.c
resource.c
rseq.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_binary.c
sysctl.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c