AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/cpuidle
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Stefan Wahren ed40fad9a5 ARM: cpuidle: Avoid memleak if init fail 
In case there are no DT idle states defined or
cpuidle_register_driver() fails, the copy of the idle driver is leaked:

    unreferenced object 0xede0dc00 (size 1024):
    comm "swapper/0", pid 1, jiffies 4294937431 (age 744.510s)
    hex dump (first 32 bytes):
    94 9e 0b c1 00 00 00 00 00 00 00 00 00 00 00 00 ................
    57 46 49 00 00 00 00 00 00 00 00 00 00 00 00 00 WFI.............
    backtrace:
    [<c1295f04>] arm_idle_init+0x44/0x1ac
    [<c0301e6c>] do_one_initcall+0x3c/0x16c
    [<c1200d70>] kernel_init_freeable+0x110/0x1d0
    [<c0cb3624>] kernel_init+0x8/0x114
    [<c0307a98>] ret_from_fork+0x14/0x3c

So fix this by freeing the unregistered copy in error case.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: d50a7d8acd (ARM: cpuidle: Support asymmetric idle definition)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-09-19 23:10:51 +02:00
..
governors cpuidle: Eliminate the CPUIDLE_DRIVER_STATE_START symbol 2017-08-30 03:05:29 +02:00
coupled.c smp: Avoid using two cache lines for struct call_single_data 2017-08-29 15:14:38 +02:00
cpuidle-arm.c ARM: cpuidle: Avoid memleak if init fail 2017-09-19 23:10:51 +02:00
cpuidle-at91.c
cpuidle-big_little.c
cpuidle-calxeda.c
cpuidle-clps711x.c
cpuidle-cps.c MIPS: Unify checks for sibling CPUs 2017-08-30 00:57:27 +02:00
cpuidle-exynos.c
cpuidle-kirkwood.c
cpuidle-mvebu-v7.c
cpuidle-powernv.c powerpc/powernv/idle: Disable LOSE_FULL_CONTEXT states when stop-api fails 2017-08-08 20:21:23 +10:00
cpuidle-pseries.c cpuidle: powerpc: no memory barrier after break from idle 2017-06-28 13:08:12 +10:00
cpuidle-ux500.c
cpuidle-zynq.c
cpuidle.c PM / s2idle: Rename ->enter_freeze to ->enter_s2idle 2017-08-11 01:29:56 +02:00
cpuidle.h
driver.c cpuidle: Make drivers initialize polling state 2017-08-30 03:06:33 +02:00
dt_idle_states.c Merge branch 'pm-sleep' 2017-09-04 00:06:02 +02:00
dt_idle_states.h
governor.c cpuidle: governors: Remove remaining old module code 2016-10-21 14:49:51 +02:00
Kconfig
Kconfig.arm ARM: cpuidle: Support asymmetric idle definition 2017-06-24 01:51:00 +02:00
Kconfig.mips cpuidle: cpuidle-cps: Enable use with MIPSr6 CPUs. 2016-10-04 16:13:57 +02:00
Kconfig.powerpc
Makefile cpuidle: Move polling state initialization code to separate file 2017-08-30 03:06:27 +02:00
poll_state.c cpuidle: Make drivers initialize polling state 2017-08-30 03:06:33 +02:00
sysfs.c cpuidle: Validate cpu_dev in cpuidle_add_sysfs() 2017-03-21 22:26:37 +01:00