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daa3eacc9e
linux/kernel
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Chris Redpath daa3eacc9e sched/fair: prevent possible infinite loop in sched_group_energy 
There is a race between hotplug and energy_diff which might result
in endless loop in sched_group_energy. When this happens, the end
condition cannot be detected.

We can store how many CPUs we need to visit at the beginning, and
bail out of the energy calculation if we visit more cpus than expected.

Bug: 72311797 72202633
Change-Id: I8dda75468ee1570da4071cd8165ef5131a8205d8
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
2018-03-05 21:56:13 +05:30
..
bpf bpf: reject stores into ctx via st and xadd 2018-02-03 17:04:25 +01:00
configs UPSTREAM: config: android-base: disable CONFIG_NFSD and CONFIG_NFS_FS 2018-03-05 21:56:13 +05:30
debug Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-12-19 13:08:40 +08:00
events Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-11-20 20:53:19 +05:30
gcov Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-02-01 12:02:38 +08:00
irq genirq: Release resources in __setup_irq() error path 2017-06-26 07:13:10 +02:00
livepatch livepatch: x86: fix relocation computation with kASLR 2015-11-11 17:36:04 +01:00
locking BACKPORT: kernel: add kcov code coverage 2018-01-22 13:15:43 +05:30
power Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-10-13 23:14:45 +08:00
printk UPSTREAM: printk: when dumping regs, show the stack, not thread_info 2017-08-11 19:31:04 +05:30
rcu BACKPORT: kernel: add kcov code coverage 2018-01-22 13:15:43 +05:30
sched sched/fair: prevent possible infinite loop in sched_group_energy 2018-03-05 21:56:13 +05:30
time Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-03-05 20:20:17 +05:30
trace Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-03-05 20:20:17 +05:30
.gitignore certs: add .gitignore to stop git nagging about x509_certificate_list 2015-10-21 15:18:35 +01:00
acct.c kernel/acct.c: fix the acct->needcheck check in check_free_space() 2018-01-10 09:27:08 +01:00
async.c kernel/async.c: revert "async: simplify lowest_in_progress()" 2018-02-16 20:09:45 +01:00
audit_fsnotify.c audit: clean simple fsnotify implementation 2015-08-06 16:14:53 -04:00
audit_tree.c audit: audit_tree_match can be boolean 2015-11-04 08:23:51 -05:00
audit_watch.c audit: Fix use after free in audit_remove_watch_rule() 2017-08-24 17:02:35 -07:00
audit.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-12-19 13:08:40 +08:00
audit.h audit: audit_tree_match can be boolean 2015-11-04 08:23:51 -05:00
auditfilter.c audit: fix comment block whitespace 2015-11-04 08:23:51 -05:00
auditsc.c BACKPORT: audit: consistently record PIDs with task_tgid_nr() 2016-10-12 17:34:22 +05:30
backtracetest.c
bounds.c
capability.c exec: Ensure mm->user_ns contains the execed files 2017-01-06 11:16:14 +01:00
cgroup_freezer.c cgroup: fix handling of multi-destination migration from subtree_control enabling 2015-12-03 10:18:21 -05:00
cgroup_pids.c cgroup_pids: don't account for the root cgroup 2015-12-03 10:18:21 -05:00
cgroup.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-04-23 12:02:14 +08:00
compat.c compat: cleanup coding in compat_get_bitmap() and compat_put_bitmap() 2015-06-04 23:57:18 +02:00
configs.c
context_tracking.c context_tracking: avoid irq_save/irq_restore on guest entry and exit 2015-11-10 12:06:23 +01:00
cpu_pm.c kernel/cpu_pm: fix cpu_cluster_pm_exit comment 2015-09-03 02:42:20 +02:00
cpu.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-01-13 12:01:52 +08:00
cpuset.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-10-13 23:14:45 +08:00
crash_dump.c
cred.c cred: Reject inodes with invalid ids in set_create_file_as() 2016-09-15 08:27:49 +02:00
delayacct.c
dma.c
elfcore.c
exec_domain.c Remove rest of exec domains. 2015-04-12 21:03:31 +02:00
exit.c BACKPORT: exit_thread: accept a task parameter to be exited 2018-03-05 21:56:13 +05:30
extable.c kernel/extable.c: mark core_kernel_text notrace 2017-07-21 07:44:56 +02:00
fork.c BACKPORT: kernel: add kcov code coverage 2018-01-22 13:15:43 +05:30
freezer.c freezer: remove obsolete comments in __thaw_task() 2014-10-21 23:44:20 +02:00
futex_compat.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 12:01:16 -08:00
futex.c Merge remote-tracking branch 'lts/linux-4.4.y' into linux-linaro-lsk-v4.4 2018-01-31 13:33:20 +08:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:27:10 +01:00
hung_task.c kernel/hung_task.c: change hung_task.c to use for_each_process_thread() 2015-04-15 16:35:22 -07:00
irq_work.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
jump_label.c jump_label: Invoke jump_label_test() via early_initcall() 2017-12-16 10:33:55 +01:00
kallsyms.c kernel/kallsyms.c: use __seq_open_private() 2014-10-14 02:18:16 +02:00
kcmp.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 12:01:16 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks locking/qrwlock: Rename QUEUE_RWLOCK to QUEUED_RWLOCKS 2015-05-12 09:46:00 +02:00
Kconfig.preempt
kcov.c UPSTREAM: kcov: fix comparison callback signature 2018-01-22 13:15:43 +05:30
kexec_core.c s390/kexec: consolidate crash_map/unmap_reserved_pages() and arch_kexec_protect(unprotect)_crashkres() 2017-10-25 11:26:32 +08:00
kexec_file.c kexec: introduce a protection mechanism for the crashkernel reserved memory 2017-10-25 11:23:52 +08:00
kexec_internal.h kexec: split kexec_file syscall code to kexec_file.c 2015-09-10 13:29:01 -07:00
kexec.c s390/kexec: consolidate crash_map/unmap_reserved_pages() and arch_kexec_protect(unprotect)_crashkres() 2017-10-25 11:26:32 +08:00
kmod.c kmod: don't run async usermode helper as a child of kworker thread 2015-10-23 17:55:10 +09:00
kprobes.c tracing/kprobes: Enforce kprobes teardown after testing 2017-05-25 14:30:17 +02:00
ksysfs.c kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
kthread.c UPSTREAM: kthread: Pin the stack via try_get_task_stack()/put_task_stack() in to_live_kthread() function 2017-08-11 19:31:04 +05:30
latencytop.c
Makefile BACKPORT: kernel: add kcov code coverage 2018-01-22 13:15:43 +05:30
membarrier.c Fix: Disable sys_membarrier when nohz_full is enabled 2017-03-12 06:37:26 +01:00
memremap.c mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done} 2017-01-19 20:17:18 +01:00
module_signing.c KEYS: Merge the type-specific data with the payload data 2015-10-21 15:18:36 +01:00
module-internal.h
module.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2018-03-05 20:20:17 +05:30
notifier.c Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-01 08:40:25 -07:00
nsproxy.c bury struct proc_ns in fs/proc 2014-12-04 14:34:54 -05:00
padata.c padata: free correct variable 2017-05-20 14:27:02 +02:00
panic.c kernel/panic.c: add missing \n 2017-07-05 14:37:19 +02:00
params.c Nothing exciting, minor tweaks and cleanups. 2015-11-09 15:53:39 -08:00
pid_namespace.c pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processes 2017-05-25 14:30:11 +02:00
pid.c pids: make task_tgid_nr_ns() safe 2017-08-24 17:02:36 -07:00
profile.c profile: hide unused functions when !CONFIG_PROC_FS 2018-02-25 11:03:44 +01:00
ptrace.c ptrace: Properly initialize ptracer_cred on fork 2017-06-14 13:16:20 +02:00
range.c kernel: avoid overflow in cmp_range 2015-01-17 10:02:23 +13:00
reboot.c kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
relay.c kernel/relay.c: use kvfree() in relay_free_page_array() 2015-06-30 19:44:59 -07:00
resource.c /proc/iomem: only expose physical resource addresses to privileged users 2017-08-06 19:19:42 -07:00
seccomp.c seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter() 2017-10-05 09:41:46 +02:00
signal.c kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal() 2018-01-10 09:27:11 +01:00
smp.c mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
smpboot.c stop_machine: Kill smp_hotplug_thread->pre_unpark, introduce stop_machine_unpark() 2015-10-20 10:23:55 +02:00
smpboot.h
softirq.c UPSTREAM: arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections 2018-01-22 13:15:43 +05:30
stacktrace.c stacktrace: introduce snprint_stack_trace for buffer output 2014-12-13 12:42:48 -08:00
stop_machine.c kernel: remove stop_machine() Kconfig dependency 2015-12-12 10:15:34 -08:00
sys_ni.c mm: mlock: add new mlock system call 2015-11-05 19:34:48 -08:00
sys.c BACKPORT: timer: convert timer_slack_ns from unsigned long to u64 2016-07-11 12:43:04 +05:30
sysctl_binary.c fs/coredump: prevent fsuid=0 dumps into user-controlled directories 2016-04-12 09:08:58 -07:00
sysctl.c cpufreq: Drop schedfreq governor 2017-11-20 21:15:59 +05:30
task_work.c task_work: remove fifo ordering guarantee 2015-09-05 13:46:58 -07:00
taskstats.c netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
test_kprobes.c
torture.c torture: Consolidate cond_resched_rcu_qs() into stutter_wait() 2015-10-06 11:25:01 -07:00
tracepoint.c tracepoint: Give priority to probes of tracepoints 2015-10-25 21:33:54 -04:00
tsacct.c
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:27:10 +01:00
up.c
user_namespace.c capabilities: ambient capabilities 2015-09-04 16:54:41 -07:00
user-return-notifier.c
user.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2014-12-17 12:31:40 -08:00
utsname_sysctl.c
utsname.c copy address of proc_ns_ops into ns_common 2014-12-04 14:34:47 -05:00
watchdog.c Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2017-01-09 12:01:35 +08:00
workqueue_internal.h workqueue: Fix NULL pointer dereference 2017-11-15 17:13:11 +01:00
workqueue.c workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq 2017-12-16 10:33:52 +01:00