WSL2-Linux-Kernel/drivers/clocksource
Masahiro Yamada 0414eab7c7 clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()
[ Upstream commit 245b993d8f ]

EXPORT_SYMBOL and __init is a bad combination because the .init.text
section is freed up after the initialization. Hence, modules cannot
use symbols annotated __init. The access to a freed symbol may end up
with kernel panic.

modpost used to detect it, but it has been broken for a decade.

Recently, I fixed modpost so it started to warn it again, then this
showed up in linux-next builds.

There are two ways to fix it:

  - Remove __init
  - Remove EXPORT_SYMBOL

I chose the latter for this case because the only in-tree call-site,
arch/x86/kernel/cpu/mshyperv.c is never compiled as modular.
(CONFIG_HYPERVISOR_GUEST is boolean)

Fixes: dd2cb34861 ("clocksource/drivers: Continue making Hyper-V clocksource ISA agnostic")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220606050238.4162200-1-masahiroy@kernel.org
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-22 14:21:59 +02:00
..
Kconfig clocksource/drivers/timer-ti-dm: Select TIMER_OF 2021-11-18 19:16:39 +01:00
Makefile
acpi_pm.c clocksource: acpi_pm: fix return value of __setup handler 2022-04-08 14:23:09 +02:00
arc_timer.c
arm_arch_timer.c clocksource/arm_arch_timer: Improve Allwinner A64 timer workaround 2021-06-16 17:33:04 +02:00
arm_global_timer.c clocksource/drivers/arm_global_timer: Remove duplicated argument in arm_global_timer 2021-06-16 17:33:04 +02:00
armv7m_systick.c
asm9260_timer.c
bcm2835_timer.c
bcm_kona_timer.c
clksrc-dbx500-prcmu.c timekeeping, clocksource: Fix various typos in comments 2021-03-22 23:06:48 +01:00
clksrc_st_lpc.c
clps711x-timer.c
dummy_timer.c
dw_apb_timer.c
dw_apb_timer_of.c clocksource/drivers/dw_apb_timer_of: Fix probe failure 2021-12-14 10:57:23 +01:00
em_sti.c
exynos_mct.c clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts 2022-04-08 14:23:08 +02:00
h8300_timer8.c
h8300_timer16.c
h8300_tpu.c
hyperv_timer.c clocksource: hyper-v: unexport __init-annotated hv_init_clocksource() 2022-06-22 14:21:59 +02:00
i8253.c
ingenic-ost.c clocksource/drivers/ingenic_ost: Fix return value check in ingenic_ost_probe() 2021-04-08 13:24:15 +02:00
ingenic-sysost.c clocksource/drivers/ingenic: Use bitfield macro helpers 2021-08-14 02:44:35 +02:00
ingenic-timer.c clocksource/drivers/ingenic: Add support for the JZ4760 2021-04-08 13:23:22 +02:00
jcore-pit.c
mips-gic-timer.c
mmio.c
mps2-timer.c
mxs_timer.c
nomadik-mtu.c
numachip.c
renesas-ostm.c
samsung_pwm_timer.c clocksource/drivers/samsung_pwm: Constify source IO memory 2021-06-04 10:12:13 +02:00
scx200_hrt.c
sh_cmt.c clocksource/drivers/sh_cmt: Fix wrong setting if don't request IRQ for clock source channel 2021-08-13 20:26:29 +02:00
sh_mtu2.c
sh_tmu.c
timer-armada-370-xp.c
timer-atcpit100.c
timer-atmel-pit.c
timer-atmel-st.c
timer-atmel-tcb.c timekeeping, clocksource: Fix various typos in comments 2021-03-22 23:06:48 +01:00
timer-cadence-ttc.c
timer-clint.c
timer-cs5535.c
timer-davinci.c
timer-digicolor.c
timer-fsl-ftm.c timekeeping, clocksource: Fix various typos in comments 2021-03-22 23:06:48 +01:00
timer-fttmr010.c clocksource/drivers/fttmr010: Pass around less pointers 2021-08-14 10:49:49 +02:00
timer-gx6605s.c
timer-imx-gpt.c
timer-imx-sysctr.c
timer-imx-tpm.c
timer-integrator-ap.c
timer-ixp4xx.c watchdog: ixp4xx: Rewrite driver to use core 2021-08-04 12:20:13 +02:00
timer-keystone.c
timer-lpc32xx.c
timer-mediatek.c clocksource/drivers/mediatek: Optimize systimer irq clear flow on shutdown 2021-08-14 02:44:35 +02:00
timer-meson6.c
timer-microchip-pit64b.c clocksource/drivers/timer-microchip-pit64b: Use notrace 2022-04-08 14:23:08 +02:00
timer-milbeaut.c
timer-mp-csky.c
timer-npcm7xx.c clocksource/drivers/npcm: Add support for WPCM450 2021-04-08 13:24:16 +02:00
timer-of.c clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init() 2022-04-08 14:23:09 +02:00
timer-of.h
timer-orion.c
timer-owl.c
timer-oxnas-rps.c clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value 2022-06-14 18:36:09 +02:00
timer-pistachio.c clocksource/drivers/pistachio: Fix trivial typo 2021-04-08 13:24:15 +02:00
timer-probe.c
timer-pxa.c
timer-qcom.c
timer-rda.c
timer-riscv.c clocksource/drivers/riscv: Events are stopped during CPU suspend 2022-06-14 18:36:07 +02:00
timer-rockchip.c
timer-sp.h
timer-sp804.c clocksource/drivers/sp804: Avoid error on multiple instances 2022-06-14 18:36:22 +02:00
timer-sprd.c
timer-stm32-lp.c
timer-stm32.c
timer-sun4i.c
timer-sun5i.c
timer-tegra.c
timer-ti-32k.c
timer-ti-dm-systimer.c clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix 2022-04-08 14:23:08 +02:00
timer-ti-dm.c clocksource/drivers/timer-ti-dm: Drop unnecessary restore 2021-06-16 17:33:04 +02:00
timer-versatile.c
timer-vf-pit.c timekeeping, clocksource: Fix various typos in comments 2021-03-22 23:06:48 +01:00
timer-vt8500.c
timer-zevio.c