Oleg Nesterov dae51f5620 sched: fix SCHED_FIFO tasks & FAIR_GROUP_SCHED ... Suppose that the SCHED_FIFO task does switch_uid(new_user); Now, p->se.cfs_rq and p->se.parent both point into the old user_struct->tg because sched_move_task() doesn't call set_task_cfs_rq() for !fair_sched_class case. Suppose that old user_struct/task_group is freed/reused, and the task does sched_setscheduler(SCHED_NORMAL); __setscheduler() sets fair_sched_class, but doesn't update ->se.cfs_rq/parent which point to the freed memory. This means that check_preempt_wakeup() doing while (!is_same_group(se, pse)) { se = parent_entity(se); pse = parent_entity(pse); } may OOPS in a similar way if rq->curr or p did something like above. Perhaps we need something like the patch below, note that __setscheduler() can't do set_task_cfs_rq(). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2007-11-15 20:57:40 +01:00
..
irq	__do_IRQ does not check IRQ_DISABLED when IRQ_PER_CPU is set	2007-11-14 18:45:43 -08:00
power	hibernate: fix lockdep report	2007-11-14 18:45:43 -08:00
time	time: fix inconsistent function names in comments	2007-11-05 15:12:33 -08:00
.gitignore
acct.c
audit_tree.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
audit.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
audit.h	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
auditfilter.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
auditsc.c	auditsc: fix kernel-doc param warnings	2007-10-22 19:40:02 -07:00
capability.c	Uninline find_pid etc set of functions	2007-10-19 11:53:41 -07:00
cgroup_debug.c	Task Control Groups: simple task cgroup debug info subsystem	2007-10-19 11:53:36 -07:00
cgroup.c	Improve cgroup printks	2007-11-14 18:45:37 -08:00
compat.c	Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt	2007-10-18 15:12:41 -07:00
configs.c
cpu.c	CPU HOTPLUG: avoid hotadd when proper possible_map isn't specified	2007-10-19 11:53:44 -07:00
cpuset.c	hotplug cpu: migrate a task within its cpuset	2007-10-19 11:53:44 -07:00
delayacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
dma.c
exec_domain.c	whitespace fixes: execution domains	2007-10-18 14:37:26 -07:00
exit.c	Uninline fork.c/exit.c	2007-10-19 11:53:56 -07:00
extable.c
fork.c	sched: fix copy_namespace() <-> sched_fork() dependency in do_fork	2007-11-09 22:39:39 +01:00
futex_compat.c	[FUTEX] Fix address computation in compat code.	2007-11-09 16:13:08 -08:00
futex.c	kernel/futex.c: make 3 functions static	2007-11-05 21:53:46 +11:00
hrtimer.c	Quieten hrtimer printk: "Switched to high resolution mode .."	2007-10-29 09:39:38 +01:00
itimer.c	whitespace fixes: interval timers	2007-10-18 14:37:26 -07:00
kallsyms.c
Kconfig.hz
Kconfig.instrumentation	Linux Kernel Markers	2007-10-19 11:53:54 -07:00
Kconfig.preempt
kexec.c	Extended crashkernel command line	2007-10-19 11:53:49 -07:00
kfifo.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latency.c
lockdep_internals.h
lockdep_proc.c
lockdep.c	lockdep: fix a typo in the __lock_acquire comment	2007-10-28 20:47:01 +01:00
Makefile	revert "Task Control Groups: example CPU accounting subsystem"	2007-11-14 18:45:40 -08:00
marker.c	Linux Kernel Markers: fix marker mutex not taken upon module load	2007-11-14 18:45:40 -08:00
module.c	Linux Kernel Markers	2007-10-19 11:53:54 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c	Add kernel/notifier.c	2007-10-19 11:53:34 -07:00
ns_cgroup.c	cgroups: implement namespace tracking subsystem	2007-10-19 11:53:37 -07:00
nsproxy.c	pid namespaces: allow cloning of new namespace	2007-10-19 11:53:39 -07:00
panic.c	trivial comment wording/typo fix regarding taint flags	2007-10-20 00:30:06 +02:00
params.c	fix param_sysfs_builtin name length check	2007-11-14 18:45:42 -08:00
pid.c	pidns: Place under CONFIG_EXPERIMENTAL	2007-11-14 18:45:43 -08:00
posix-cpu-timers.c	Isolate some explicit usage of task->tgid	2007-10-19 11:53:40 -07:00
posix-timers.c	Isolate some explicit usage of task->tgid	2007-10-19 11:53:40 -07:00
printk.c
profile.c	sched: document profile=sleep requiring CONFIG_SCHEDSTATS	2007-10-24 18:23:50 +02:00
ptrace.c	Isolate some explicit usage of task->tgid	2007-10-19 11:53:40 -07:00
rcupdate.c
rcutorture.c
relay.c
resource.c	Add IORESOUCE_BUSY flag for System RAM	2007-11-14 18:45:39 -08:00
rtmutex_common.h
rtmutex-debug.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex.h
rwsem.c
sched_debug.c	sched: reintroduce the sched_min_granularity tunable	2007-11-09 22:39:37 +01:00
sched_fair.c	sched: fix copy_namespace() <-> sched_fork() dependency in do_fork	2007-11-09 22:39:39 +01:00
sched_idletask.c	sched: isolate SMP balancing code a bit more	2007-10-24 18:23:51 +02:00
sched_rt.c	sched: isolate SMP balancing code a bit more	2007-10-24 18:23:51 +02:00
sched_stats.h	sched: fix delay accounting regression	2007-11-09 22:39:37 +01:00
sched.c	sched: fix SCHED_FIFO tasks & FAIR_GROUP_SCHED	2007-11-15 20:57:40 +01:00
seccomp.c
signal.c	sigwait eats blocked default-ignore signals	2007-11-12 16:05:23 -08:00
softirq.c
softlockup.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c	[COMPAT]: Fix build on COMPAT platforms when CONFIG_NET is disabled.	2007-10-30 21:29:56 -07:00
sys.c	Isolate the explicit usage of signal->pgrp	2007-10-19 11:53:43 -07:00
sysctl_check.c	[SYSCTL]: Fix warning for token-ring from sysctl checker	2007-11-13 21:15:24 -08:00
sysctl.c	sysctl: check length at deprecated_sysctl_warning	2007-11-14 18:45:37 -08:00
taskstats.c	kernel/taskstats.c: fix bogus nlmsg_free()	2007-11-14 18:45:44 -08:00
time.c
timer.c	sched: restore deterministic CPU accounting on powerpc	2007-11-09 22:39:38 +01:00
tsacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
uid16.c
user_namespace.c
user.c	sched: make cpu_shares_{show,store}() static	2007-10-24 18:23:50 +02:00
utsname_sysctl.c
utsname.c
wait.c
workqueue.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00