mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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| Filename | Latest commit message | Latest commit date |
|---|---|---|
c37c28d9aa
Background: When CPU is going to idle state, it would inform RCU that current CPU is entering idle through rcu_idle_enter(), and RCU will ignore read-side critical sections of this CPU. However, there is CFI check mechanism inside idle flow and calls rcu_read_lock(), so "rcu_read_lock() used illegally while idle" in rcu_read_lock() will be triggered because rcu_idle_enter() was already called before. Beside, the pointer of rcu_dereference() might be invalid due to the RCU read-side critical sections will be ignoring in this going idle CPU, it might cause problems like: access the wrong data/address, kernel exception... Based on above description: We will add __nocfi to cpuidle_enter_state to avoid “rcu_read_lock() used illegally while idle!” and avoid the usage of invalid pointer of rcu_dereference() in this situation. Bug: 169017431 Change-Id: I8bbe25704e18cfde351a8f4277dd4b44b07421f5 Signed-off-by: rogercl.yang <rogercl.yang@mediatek.com> Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> |
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| .. | ||
| governors | ||
| coupled.c | ||
| cpuidle-arm.c | ||
| cpuidle-at91.c | ||
| cpuidle-big_little.c | ||
| cpuidle-calxeda.c | ||
| cpuidle-clps711x.c | ||
| cpuidle-cps.c | ||
| cpuidle-exynos.c | ||
| cpuidle-haltpoll.c | ||
| cpuidle-kirkwood.c | ||
| cpuidle-mvebu-v7.c | ||
| cpuidle-powernv.c | ||
| cpuidle-psci.c | ||
| cpuidle-pseries.c | ||
| cpuidle-ux500.c | ||
| cpuidle-zynq.c | ||
| cpuidle.c | ||
| cpuidle.h | ||
| driver.c | ||
| dt_idle_states.c | ||
| dt_idle_states.h | ||
| governor.c | ||
| Kconfig | ||
| Kconfig.arm | ||
| Kconfig.mips | ||
| Kconfig.powerpc | ||
| Makefile | ||
| poll_state.c | ||
| sysfs.c | ||