Oleg Nesterov dd1c1f2f20 pids: make task_tgid_nr_ns() safe ... This was reported many times, and this was even mentioned in commit 52ee2dfdd4 ("pids: refactor vnr/nr_ns helpers to make them safe") but somehow nobody bothered to fix the obvious problem: task_tgid_nr_ns() is not safe because task->group_leader points to nowhere after the exiting task passes exit_notify(), rcu_read_lock() can not help. We really need to change __unhash_process() to nullify group_leader, parent, and real_parent, but this needs some cleanups. Until then we can turn task_tgid_nr_ns() into another user of __task_pid_nr_ns() and fix the problem. Reported-by: Troy Kensinger <tkensinger@google.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-08-21 12:47:31 -07:00
..
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 time on IOC_ENABLE	2017-08-10 12:01:09 +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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2017-07-05 11:11:26 -07:00
rcu
sched	sched/core: Fix some documentation build warnings	2017-07-25 11:17:02 +02:00
time	timers: Fix overflow in get_next_timer_interrupt	2017-08-01 14:20:53 +02:00
trace	bpf: fix bpf_trace_printk on 32 bit archs	2017-08-15 17:32:15 -07:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit/stable-4.13 PR 20170816	2017-08-16 16:48:34 -07:00
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
auditfilter.c
auditsc.c	Merge branch 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit	2017-07-05 11:24:05 -07:00
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_pm.c
cpu.c	smp/hotplug: Replace BUG_ON and react useful	2017-07-11 22:25:44 +02:00
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	lib/extable.c: use bsearch() library function in search_extable()	2017-07-10 16:32:35 -07:00
fork.c	mm: migrate: prevent racy access to tlb_flush_pending	2017-08-10 15:54:07 -07:00
freezer.c
futex_compat.c
futex.c	futex: Remove unnecessary warning from get_futex_key	2017-08-09 14:00:54 -07:00
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_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
kexec.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -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_signing.c
module-internal.h
module.c	Modules updates for v4.13	2017-07-12 17:22:01 -07:00
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid_namespace.c
pid.c	pids: make task_tgid_nr_ns() safe	2017-08-21 12:47:31 -07:00
profile.c
ptrace.c
range.c
reboot.c
relay.c
resource.c
seccomp.c	seccomp: Switch from atomic_t to recount_t	2017-06-26 09:24:00 -07:00
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_ni.c
sys.c	fix a braino in compat_sys_getrlimit()	2017-07-12 09:15:00 -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
sysctl.c	kernel/watchdog: split up config options	2017-07-12 16:26:02 -07:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c	kernel/watchdog: Prevent false positives with turbo modes	2017-08-18 12:35:02 +02:00
watchdog.c	kernel/watchdog: Prevent false positives with turbo modes	2017-08-18 12:35:02 +02:00
workqueue_internal.h
workqueue.c	workqueue: Work around edge cases for calc of pool's cpumask	2017-07-28 11:05:52 -04:00