Eric W. Biederman 4c44aaafa8 userns: Kill task_user_ns ... The task_user_ns function hides the fact that it is getting the user namespace from struct cred on the task. struct cred may go away as soon as the rcu lock is released. This leads to a race where we can dereference a stale user namespace pointer. To make it obvious a struct cred is involved kill task_user_ns. To kill the race modify the users of task_user_ns to only reference the user namespace while the rcu lock is held. Cc: Kees Cook <keescook@chromium.org> Cc: James Morris <james.l.morris@oracle.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>		2012-11-20 04:17:44 -08:00
..
debug	KGDB/KDB fixes and cleanups	2012-10-13 11:16:58 +09:00
events	pidns: Use task_active_pid_ns where appropriate	2012-11-19 05:59:09 -08:00
gcov
irq	irqdomain: augment add_simple() to allocate descs	2012-10-10 08:57:26 +02:00
power	Merge branch 'pm-qos'	2012-09-17 20:25:51 +02:00
sched	userns: Kill task_user_ns	2012-11-20 04:17:44 -08:00
time	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-10-12 22:17:48 +09:00
trace	Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent	2012-10-21 19:53:34 +02:00
.gitignore
acct.c	vfs: make path_openat take a struct filename pointer	2012-10-12 20:15:09 -04:00
async.c
audit.c	fs: handle failed audit_log_start properly	2012-10-09 23:33:37 -04:00
audit.h	audit: optimize audit_compare_dname_path	2012-10-12 00:32:02 -04:00
audit_tree.c	audit: clean up refcounting in audit-tree	2012-08-15 12:55:22 +02:00
audit_watch.c	audit: optimize audit_compare_dname_path	2012-10-12 00:32:02 -04:00
auditfilter.c	audit: optimize audit_compare_dname_path	2012-10-12 00:32:02 -04:00
auditsc.c	audit: make audit_inode take struct filename	2012-10-12 20:15:09 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c	pidns: Use task_active_pid_ns where appropriate	2012-11-19 05:59:09 -08:00
cgroup_freezer.c	cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them	2012-09-14 12:01:16 -07:00
compat.c
configs.c
cpu.c	CPU hotplug, debug: detect imbalance between get_online_cpus() and put_online_cpus()	2012-10-09 16:22:15 +09:00
cpu_pm.c
cpuset.c
crash_dump.c
cred.c	userns: Make credential debugging user namespace safe.	2012-08-23 22:54:18 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	pidns: Wait in zap_pid_ns_processes until pid_ns->nr_hashed == 1	2012-11-19 05:59:12 -08:00
extable.c
fork.c	userns: Allow unprivileged users to create user namespaces.	2012-11-19 05:59:24 -08:00
freezer.c
futex.c
futex_compat.c
groups.c
hrtimer.c
hung_task.c
irq_work.c
itimer.c
jump_label.c	jump_label: Export jump_label_rate_limit()	2012-08-06 19:00:35 +03:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	locking: Adjust spin lock inlining Kconfig options	2012-09-13 17:56:13 +02:00
Kconfig.preempt
kexec.c	kdump: remove unneeded include	2012-10-06 03:05:19 +09:00
kfifo.c
kmod.c	infrastructure for saner ret_from_kernel_thread semantics	2012-10-12 13:35:07 -04:00
kprobes.c	kprobes/x86: Fix to support jprobes on ftrace-based kprobe	2012-09-13 22:52:11 -04:00
ksysfs.c
kthread.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2012-10-13 10:05:52 +09:00
latencytop.c
lglock.c
lockdep.c	lockdep: Check if nested lock is actually held	2012-09-13 17:00:44 +02:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Makefile: Documentation for external tool should be correct	2012-10-25 16:00:53 -07:00
modsign_pubkey.c	MODSIGN: Provide module signing public keys to the kernel	2012-10-10 20:01:22 +10:30
module-internal.h	MODSIGN: Move the magic string to the end of a module and eliminate the search	2012-10-19 17:30:40 -07:00
module.c	MODSIGN: Move the magic string to the end of a module and eliminate the search	2012-10-19 17:30:40 -07:00
module_signing.c	module_signing: fix printk format warning	2012-10-22 08:56:34 +03:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c	userns: Make create_new_namespaces take a user_ns parameter	2012-11-20 04:17:43 -08:00
padata.c
panic.c	panic: fix a possible deadlock in panic()	2012-07-30 17:25:13 -07:00
params.c
pid.c	pidns: Wait in zap_pid_ns_processes until pid_ns->nr_hashed == 1	2012-11-19 05:59:12 -08:00
pid_namespace.c	pidns: Support unsharing the pid namespace.	2012-11-19 05:59:16 -08:00
posix-cpu-timers.c
posix-timers.c
printk.c	printk: Fix scheduling-while-atomic problem in console_cpu_notify()	2012-10-16 18:17:44 -07:00
profile.c
ptrace.c	userns: Kill task_user_ns	2012-11-20 04:17:44 -08:00
range.c
rcu.h
rcupdate.c	rcu: Add PROVE_RCU_DELAY to provoke difficult races	2012-09-23 07:42:49 -07:00
rcutiny.c	rcu: Move TINY_RCU quiescent state out of extended quiescent state	2012-09-23 07:42:52 -07:00
rcutiny_plugin.h	rcu: Move TINY_PREEMPT_RCU away from raw_local_irq_save()	2012-09-23 07:42:51 -07:00
rcutorture.c	rcu: Prevent initialization race in rcutorture kthreads	2012-09-23 07:42:23 -07:00
rcutree.c	rcu: Grace-period initialization excludes only RCU notifier	2012-10-08 09:06:38 -07:00
rcutree.h	rcu: Grace-period initialization excludes only RCU notifier	2012-10-08 09:06:38 -07:00
rcutree_plugin.h	rcu: Make RCU_FAST_NO_HZ handle adaptive ticks	2012-09-26 15:44:02 +02:00
rcutree_trace.c	Merge remote-tracking branch 'tip/smp/hotplug' into next.2012.09.25b	2012-09-25 10:01:45 -07:00
relay.c
res_counter.c
resource.c	kernel/resource.c: fix stack overflow in __reserve_region_with_split()	2012-10-06 03:05:31 +09:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
seccomp.c
semaphore.c
signal.c	pidns: Use task_active_pid_ns where appropriate	2012-11-19 05:59:09 -08:00
smp.c
smpboot.c	hotplug: Fix UP bug in smpboot hotplug code	2012-08-13 17:01:07 +02:00
smpboot.h	smpboot: Provide infrastructure for percpu hotplug threads	2012-08-13 17:01:07 +02:00
softirq.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-10-01 10:43:39 -07:00
spinlock.c
srcu.c	workqueue: deprecate system_nrt[_freezable]_wq	2012-08-20 14:51:24 -07:00
stacktrace.c
stop_machine.c
sys.c	use clamp_t in UNAME26 fix	2012-10-19 18:51:17 -07:00
sys_ni.c
sysctl.c	Kconfig: clean up the "#if defined(arch)" list for exception-trace sysctl entry	2012-10-09 16:22:14 +09:00
sysctl_binary.c	pidns: Use task_active_pid_ns where appropriate	2012-11-19 05:59:09 -08:00
task_work.c	task_work: task_work_add() should not succeed after exit_task_work()	2012-09-13 16:47:34 +02:00
taskstats.c	taskstats: cgroupstats_user_cmd() may leak on error	2012-10-06 03:05:31 +09:00
test_kprobes.c
time.c	time: Move update_vsyscall definitions to timekeeper_internal.h	2012-09-24 12:38:06 -04:00
timeconst.pl
timer.c	timers: Fix endless looping between cascade() and internal_add_timer()	2012-10-09 21:27:14 +02:00
tracepoint.c
tsacct.c	userns: Convert taskstats to handle the user and pid namespaces.	2012-09-18 01:01:32 -07:00
uid16.c
up.c
user-return-notifier.c
user.c	userns: Add kprojid_t and associated infrastructure in projid.h	2012-09-18 01:01:37 -07:00
user_namespace.c	userns: Allow setting a userns mapping to your current uid.	2012-11-20 04:17:40 -08:00
utsname.c	userns: Make create_new_namespaces take a user_ns parameter	2012-11-20 04:17:43 -08:00
utsname_sysctl.c
wait.c
watchdog.c	watchdog: Use hotplug thread infrastructure	2012-08-13 17:01:07 +02:00
workqueue.c	workqueue: cancel_delayed_work() should return %false if work item is idle	2012-10-24 12:38:16 -07:00
workqueue_sched.h