Stanislaw Gruszka e75e863dd5 sched: Fix user time incorrectly accounted as system time on 32-bit ...

We have 32-bit variable overflow possibility when multiply in
task_times() and thread_group_times() functions. When the
overflow happens then the scaled utime value becomes erroneously
small and the scaled stime becomes i erroneously big.

Reported here:

 https://bugzilla.redhat.com/show_bug.cgi?id=633037
 https://bugzilla.kernel.org/show_bug.cgi?id=16559

Reported-by: Michael Chapman <redhat-bugzilla@very.puzzling.org>
Reported-by: Ciriaco Garcia de Celis <sysman@etherpilot.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: <stable@kernel.org>  # 2.6.32.19+ (partially) and 2.6.33+
LKML-Reference: <20100914143513.GB8415@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2010-09-15 10:41:36 +02:00

..

debug

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-09-08 11:13:42 -07:00

gcov

gcov: fix null-pointer dereference for certain module types

2010-09-09 18:57:23 -07:00

irq

irq: Add new IRQ flag IRQF_NO_SUSPEND

2010-07-29 13:24:57 +02:00

power

Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

2010-09-11 15:50:53 -07:00

time

time: Workaround gcc loop optimization that causes 64bit div errors

2010-08-13 12:03:24 -07:00

trace

Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-09-10 07:31:24 -07:00

.gitignore

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acct.c

pass a struct path to vfs_statfs

2010-08-09 16:48:42 -04:00

async.c

async: use workqueue for worker pool

2010-07-14 11:29:46 +02:00

audit_tree.c

fanotify: use both marks when possible

2010-07-28 10:18:55 -04:00

audit_watch.c

Revert "fsnotify: store struct file not struct path"

2010-08-12 14:23:04 -07:00

audit.c

Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

2010-08-10 11:39:13 -07:00

audit.h

Audit: split audit watch Kconfig

2010-07-28 09:58:19 -04:00

auditfilter.c

audit: do not get and put just to free a watch

2010-07-28 09:58:17 -04:00

auditsc.c

vfs: add helpers to get root and pwd

2010-08-11 00:28:20 -04:00

backtracetest.c

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bounds.c

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capability.c

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cgroup_freezer.c

Freezer / cgroup freezer: Update stale locking comments

2010-05-10 23:18:47 +02:00

cgroup.c

cgroups: fix API thinko

2010-09-09 18:57:23 -07:00

compat.c

compat: Make compat_alloc_user_space() incorporate the access_ok()

2010-09-14 16:08:45 -07:00

configs.c

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cpu.c

sched: adjust when cpu_active and cpuset configurations are updated during cpu on/offlining

2010-06-08 21:40:36 +02:00

cpuset.c

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-08-06 09:39:22 -07:00

cred.c

Add a dummy printk function for the maintenance of unused printks

2010-08-12 09:51:35 -07:00

delayacct.c

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dma.c

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early_res.c

kmemleak: Add support for NO_BOOTMEM configurations

2010-07-19 11:54:15 +01:00

elfcore.c

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exec_domain.c

sys_personality: remove the bogus checks in sys_personality()->__set_personality() path

2010-08-09 20:45:05 -07:00

exit.c

Fix unprotected access to task credentials in waitid()

2010-08-17 18:07:43 -07:00

extable.c

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fork.c

mm: make the vma list be doubly linked

2010-08-21 08:49:21 -07:00

freezer.c

…

futex_compat.c

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futex.c

futex: futex_find_get_task remove credentails check

2010-06-30 15:43:44 -07:00

groups.c

kernel/groups.c: fix integer overflow in groups_search

2010-09-09 18:57:24 -07:00

hrtimer.c

gcc-4.6: kernel/*: Fix unused but set warnings

2010-09-05 14:36:58 +02:00

hung_task.c

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hw_breakpoint.c

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-08-06 09:30:52 -07:00

itimer.c

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kallsyms.c

kdb: core for kgdb back end (2 of 2)

2010-05-20 21:04:21 -05:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kexec.c

kexec: return -EFAULT on copy_to_user() failures

2010-08-11 08:59:22 -07:00

kfifo.c

kfifo: implement missing __kfifo_skip_r()

2010-08-20 09:34:54 -07:00

kmod.c

Make do_execve() take a const filename pointer

2010-08-17 18:07:43 -07:00

kprobes.c

kprobes: Move enable/disable_kprobe() out from debugfs code

2010-05-08 18:08:30 +02:00

ksysfs.c

sysfs: add struct file* to bin_attr callbacks

2010-05-21 09:37:31 -07:00

kthread.c

kthread: implement kthread_data()

2010-06-29 10:07:09 +02:00

latencytop.c

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lockdep_internals.h

lockdep: No need to disable preemption in debug atomic ops

2010-05-04 05:38:16 +02:00

lockdep_proc.c

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lockdep_states.h

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lockdep.c

sched_clock: Add local_clock() API and improve documentation

2010-06-09 10:34:49 +02:00

Makefile

Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

2010-08-10 11:39:13 -07:00

module.c

module: cleanup comments, remove noinline

2010-08-05 12:59:13 +09:30

mutex-debug.c

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mutex-debug.h

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mutex.c

mutex: Fix annotations to include it in kernel-locking docbook

2010-09-03 08:19:51 +02:00

mutex.h

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notifier.c

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ns_cgroup.c

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nsproxy.c

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padata.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2010-08-04 15:23:14 -07:00

panic.c

lib/bug.c: add oops end marker to WARN implementation

2010-08-11 08:59:22 -07:00

params.c

param: locking for kernel parameters

2010-08-11 23:04:20 +09:30

perf_event.c

perf: Fix CPU hotplug

2010-09-09 20:38:52 +02:00

pid_namespace.c

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pid.c

pids: alloc_pidmap: remove the unnecessary boundary checks

2010-08-11 08:59:20 -07:00

pm_qos_params.c

PM QoS: Correct pr_debug() misuse and improve parameter checks

2010-09-11 00:53:05 +02:00

posix-cpu-timers.c

Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux

2010-08-10 12:07:51 -07:00

posix-timers.c

posix_timer: Move copy_to_user(created_timer_id) down in timer_create()

2010-07-23 15:08:12 +02:00

printk.c

gcc-4.6: printk: use stable variable to dump kmsg buffer

2010-08-09 20:45:06 -07:00

profile.c

numa: in-kernel profiling: use cpu_to_mem() for per cpu allocations

2010-05-27 09:12:57 -07:00

ptrace.c

ptrace: optimize exit_ptrace() for the likely case

2010-08-11 08:59:19 -07:00

range.c

kernel/range: remove unused definition of ARRAY_SIZE()

2010-08-09 20:45:06 -07:00

rcupdate.c

tree/tiny rcu: Add debug RCU head objects

2010-06-14 16:37:26 -07:00

rcutiny_plugin.h

rcu: slim down rcutiny by removing rcu_scheduler_active and friends

2010-05-10 11:08:34 -07:00

rcutiny.c

tree/tiny rcu: Add debug RCU head objects

2010-06-14 16:37:26 -07:00

rcutorture.c

sched_clock: Add local_clock() API and improve documentation

2010-06-09 10:34:49 +02:00

rcutree_plugin.h

rcu: remove all rcu head initializations, except on_stack initializations

2010-05-11 16:10:47 -07:00

rcutree_trace.c

rcu: reduce the number of spurious RCU_SOFTIRQ invocations

2010-05-10 11:08:35 -07:00

rcutree.c

tree/tiny rcu: Add debug RCU head objects

2010-06-14 16:37:26 -07:00

rcutree.h

rcu: reduce the number of spurious RCU_SOFTIRQ invocations

2010-05-10 11:08:35 -07:00

relay.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00

res_counter.c

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resource.c

resource: shared I/O region support

2010-05-11 12:01:10 -07:00

rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

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sched_clock.c

sched_clock: Add local_clock() API and improve documentation

2010-06-09 10:34:49 +02:00

sched_cpupri.c

sched: No need for bootmem special cases

2010-07-17 12:06:22 +02:00

sched_cpupri.h

sched: No need for bootmem special cases

2010-07-17 12:06:22 +02:00

sched_debug.c

sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug

2010-07-21 21:46:12 +02:00

sched_fair.c

sched: Improve latencies under load by decreasing minimum scheduling granularity

2010-09-13 20:17:11 +02:00

sched_features.h

…

sched_idletask.c

sched: Cure load average vs NO_HZ woes

2010-04-23 11:02:02 +02:00

sched_rt.c

sched: task_tick_rt: Remove the obsolete ->signal != NULL check

2010-06-18 10:46:56 +02:00

sched_stats.h

sched: Remove the obsolete exit_state/signal hacks

2010-06-18 10:46:56 +02:00

sched.c

sched: Fix user time incorrectly accounted as system time on 32-bit

2010-09-15 10:41:36 +02:00

seccomp.c

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semaphore.c

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signal.c

CRED: Fix RCU warning due to previous patch fixing __task_cred()'s checks

2010-08-04 11:17:10 -07:00

smp.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00

softirq.c

kernel/: fix BUG_ON checks for cpu notifier callbacks direct call

2010-06-04 15:21:45 -07:00

spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

stop_machine: struct cpu_stopper, remove alignment padding on 64 bits

2010-08-09 20:45:06 -07:00

sys_ni.c

fanotify: sys_fanotify_mark declartion

2010-07-28 09:58:55 -04:00

sys.c

pid: make setpgid() system call use RCU read-side critical section

2010-08-31 17:00:18 -07:00

sysctl_binary.c

sysctl: don't use own implementation of hex_to_bin()

2010-05-25 08:07:05 -07:00

sysctl_check.c

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sysctl.c

gcc-4.6: kernel/*: Fix unused but set warnings

2010-09-05 14:36:58 +02:00

taskstats.c

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test_kprobes.c

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time.c

time: Kill off CONFIG_GENERIC_TIME

2010-07-27 12:40:54 +02:00

timeconst.pl

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timer.c

kernel/timer.c: fix kernel-doc function parameter warning

2010-08-10 15:33:09 -07:00

tracepoint.c

tracing: Let tracepoints have data passed to tracepoint callbacks

2010-05-14 09:50:34 -04:00

tsacct.c

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uid16.c

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up.c

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user_namespace.c

user_ns: Introduce user_nsmap_uid and user_ns_map_gid.

2010-06-16 14:55:34 -07:00

user-return-notifier.c

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user.c

sched: Remove a stale comment

2010-05-10 08:48:39 +02:00

utsname_sysctl.c

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utsname.c

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wait.c

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watchdog.c

lockup_detector: Sync touch_*_watchdog back to old semantics

2010-09-01 10:02:28 +02:00

workqueue_sched.h

workqueue: implement concurrency managed dynamic worker pool

2010-06-29 10:07:14 +02:00

workqueue.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2010-09-07 14:08:17 -07:00