Will Deacon 30b9da0ec2 arm64: ftrace: Ensure module ftrace trampoline is coherent with I-side ... commit b6143d10d2 upstream. The initial support for dynamic ftrace trampolines in modules made use of an indirect branch which loaded its target from the beginning of a special section (e71a4e1beb ("arm64: ftrace: add support for far branches to dynamic ftrace")). Since no instructions were being patched, no cache maintenance was needed. However, later in be0f272bfc ("arm64: ftrace: emit ftrace-mod.o contents through code") this code was reworked to output the trampoline instructions directly into the PLT entry but, unfortunately, the necessary cache maintenance was overlooked. Add a call to __flush_icache_range() after writing the new trampoline instructions but before patching in the branch to the trampoline. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: James Morse <james.morse@arm.com> Cc: <stable@vger.kernel.org> Fixes: be0f272bfc ("arm64: ftrace: emit ftrace-mod.o contents through code") Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-08-25 10:48:02 +02:00
..
boot	arm64: dts: rockchip: fix isp iommu clocks and power domain	2019-08-06 19:06:47 +02:00
configs	arm64: defconfig: Enable TI's AM6 SoC platform	2018-08-29 11:51:26 -07:00
crypto	crypto: arm64/sha2-ce - correct digest for empty data in finup	2019-07-26 09:14:19 +02:00
include	arm64/mm: fix variable 'pud' set but not used	2019-08-25 10:47:56 +02:00
kernel	arm64: ftrace: Ensure module ftrace trampoline is coherent with I-side	2019-08-25 10:48:02 +02:00
kvm	arm64: KVM: regmap: Fix unexpected switch fall-through	2019-08-25 10:47:58 +02:00
lib	arm64: lse: remove -fcall-used-x0 flag	2018-11-13 11:08:54 -08:00
mm	arm64: mm: make CONFIG_ZONE_DMA32 configurable	2019-07-26 09:14:04 +02:00
net	bpf, arm64: use more scalable stadd over ldxr / stxr loop in xadd	2019-07-03 13:14:49 +02:00
xen
Kconfig	arm64: mm: make CONFIG_ZONE_DMA32 configurable	2019-07-26 09:14:04 +02:00
Kconfig.debug	Kconfig: consolidate the "Kernel hacking" menu	2018-08-02 08:06:48 +09:00
Kconfig.platforms	ARM: SoC: late updates	2018-08-25 14:12:36 -07:00
Makefile	arm64: Don't unconditionally add -Wno-psabi to KBUILD_CFLAGS	2019-07-03 13:14:41 +02:00