Lukasz Luba
91c21bea59
UPSTREAM: sched/fair: Fix wrong negative conversion in find_energy_efficient_cpu() ...
In find_energy_efficient_cpu() 'cpu_cap' could be less that 'util'.
It might be because of RT, DL (so higher sched class than CFS), irq or
thermal pressure signal, which reduce the capacity value.
In such situation the result of 'cpu_cap - util' might be negative but
stored in the unsigned long. Then it might be compared with other unsigned
long when uclamp_rq_util_with() reduced the 'util' such that is passes the
fits_capacity() check.
Prevent this situation and make the arithmetic more safe.
Fixes: 1d42509e475cd ("sched/fair: Make EAS wakeup placement consider uclamp restrictions")
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20200810083004.26420-1-lukasz.luba@arm.com
(cherry picked from commit da0777d35f47892f359c3f73ea155870bb595700)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ib3e22c155eb031854cfb4428494c1c4da57692b1
2020-11-14 16:20:56 +01:00
This is the 5.4.57 stable release
2020-08-07 10:07:58 +02:00
This is the 5.4.53 stable release
2020-07-23 12:36:54 +02:00
kgdb: Avoid suspicious RCU usage warning
2020-07-09 09:37:51 +02:00
This is the 5.4.36 stable release
2020-04-29 17:24:24 +02:00
This is the 5.4.61 stable release
2020-08-26 11:11:38 +02:00
kernel/gcov/fs.c: gcov_seq_next() should increase position index
2020-04-29 16:33:00 +02:00
Revert "ANDROID: Revert: Merge 5.4.60 into android11-5.4"
2020-08-23 13:12:51 +02:00
ANDROID: kallsyms: increase KSYM_NAME_LEN
2020-08-04 19:33:41 +00:00
ANDROID: rwsem: Add vendor hook to the rw-semaphore
2020-08-20 19:28:23 +00:00
ANDROID: power: Export log_{suspend_abort,abnormal_wakeup}_reason
2020-08-25 20:46:53 +00:00
ANDROID: vendor_hooks: Add vendor hooks for getting printk messages
2020-09-14 14:42:20 +00:00
BACKPORT: rcu/tree: Export rcu_idle_{enter,exit} to modules
2020-11-04 01:02:40 +00:00
UPSTREAM: sched/fair: Fix wrong negative conversion in find_energy_efficient_cpu()
2020-11-14 16:20:56 +01:00
ANDROID: GKI: time: Export for nsec_to_clock_t
2020-09-28 18:10:29 +00:00
Revert "tracing: Move pipe reference to trace array instead of current_tracer"
2020-08-23 13:12:53 +02:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
audit_get_nd(): don't unlock parent too early
2019-11-10 11:56:55 -05:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
ANDROID: cfi: ensure RCU is watching in __cfi_slowpath
2020-11-02 18:55:52 +00:00
kernel/configs: Replace GPL boilerplate code with SPDX identifier
2019-07-30 18:34:15 +02:00
This is the 5.4.48 stable release
2020-06-22 11:43:59 +02:00
kernel/cpu_pm: Fix uninitted local in cpu_pm
2020-06-22 09:31:22 +02:00
keys: Fix request_key() cache
2020-01-17 19:48:42 +01:00
kernel/elfcore.c: include proper prototypes
2019-09-25 17:51:39 -07:00
exit: Move preemption fixup up, move blocking operations down
2020-06-22 09:31:01 +02:00
extable: Add function to search only kernel exception table
2019-08-21 22:23:48 +10:00
FROMGIT: mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
2020-09-15 09:34:00 -07:00
Revert "libata, freezer: avoid block device removal while system is frozen"
2019-10-06 09:11:37 -06:00
ANDROID: futex: Add vendor hook for wait queue
2020-08-20 19:30:35 +00:00
kheaders: substituting --sort in archive creation
2019-10-17 09:08:19 +09:00
jump_label: Don't warn on __exit jump entries
2019-08-29 15:10:10 +01:00
ANDROID: kallsyms: ignore ThinLTO+CFI hash suffix in kallsyms_lookup_name()
2020-09-22 20:17:26 +00:00
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
2019-07-22 18:05:11 +02:00
UPSTREAM: kcov: remote coverage support
2020-01-13 18:54:56 +00:00
kexec_load: Disable at runtime if the kernel is locked down
2019-08-19 21:54:15 -07:00
kexec: bail out upon SIGKILL when allocating memory.
2019-09-25 17:51:40 -07:00
kexec_elf: support 32 bit ELF files
2019-09-06 23:58:44 +02:00
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
kmod: make request_module() return an error when autoloading is disabled
2020-04-17 10:50:22 +02:00
Revert "ANDROID: Revert: Merge 5.4.60 into android11-5.4"
2020-08-23 13:12:51 +02:00
ANDROID: Disable kthread delayed work fp check in CFI builds
2020-09-29 15:26:34 +00:00
ANDROID: add support for Clang's Control Flow Integrity (CFI)
2019-11-27 12:49:12 -08:00
ANDROID: modules: cfi cleanup for module load failure
2020-11-06 10:09:05 +05:30
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
x86/mm: split vmalloc_sync_all()
2020-03-25 08:25:58 +01:00
padata: add separate cpuhp node for CPUHP_PADATA_DEAD
2020-06-17 16:40:22 +02:00
panic: ensure preemption is disabled during panic()
2019-10-07 15:47:19 -07:00
lockdown: Lock down module params that specify hardware parameters (eg. ioport)
2019-08-19 21:54:16 -07:00
ANDROID: GKI: pid: Export for find_task_by_vpid
2020-09-28 18:10:49 +00:00
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
2020-01-23 08:22:36 +01:00
FROMLIST: reboot: Export reboot_mode
2019-11-25 11:46:31 -08:00
kernel/relay.c: fix memleak on destroy relay channel
2020-08-26 10:40:51 +02:00
/dev/mem: Revoke mappings when a driver claims the region
2020-06-24 17:50:35 +02:00
ANDROID: scs: fix recursive spinlock in scs_check_usage
2020-06-09 08:28:50 +00:00
seccomp: Fix ioctl number for SECCOMP_IOCTL_NOTIF_ID_VALID
2020-08-19 08:15:58 +02:00
ANDROID: GKI: signal: Export for __lock_task_sighand
2020-09-28 18:10:21 +00:00
stacktrace: Don't skip first entry on noncurrent tasks
2019-11-04 21:19:25 +01:00
stop_machine: Avoid potential race behaviour
2019-10-17 12:47:12 +02:00
Merge Linus's 5.4-rc1-prerelease branch into android-mainline
2019-09-20 16:07:54 -07:00
This is the 5.4.8 stable release
2020-01-04 19:40:03 +01:00
taskstats: fix data-race
2020-01-09 10:19:54 +01:00
torture: Remove exporting of internal functions
2019-08-01 14:30:22 -07:00
umh: fix memory leak on execve failure
2020-05-20 08:20:13 +02:00
Revert "ANDROID: proc: Add /proc/uid directory"
2020-03-06 20:23:08 +00:00
watchdog/softlockup: Enforce that timestamp is valid on boot
2020-02-24 08:36:52 +01:00
ANDROID: workqueue: add vendor hook for wq lockup information
2020-10-05 10:27:15 +09:00
91c21bea59