Russell King 249735b011 ARM: kexec: fix oops after TLB are invalidated ... [ Upstream commit 4d62e81b60 ] Giancarlo Ferrari reports the following oops while trying to use kexec: Unable to handle kernel paging request at virtual address 80112f38 pgd = fd7ef03e [80112f38] *pgd=0001141e(bad) Internal error: Oops: 80d [#1] PREEMPT SMP ARM ... This is caused by machine_kexec() trying to set the kernel text to be read/write, so it can poke values into the relocation code before copying it - and an interrupt occuring which changes the page tables. The subsequent writes then hit read-only sections that trigger a data abort resulting in the above oops. Fix this by copying the relocation code, and then writing the variables into the destination, thereby avoiding the need to make the kernel text read/write. Reported-by: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> Tested-by: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-02-17 11:02:24 +01:00
..
boot	ARM: dts: lpc32xx: Revert set default clock rate of HCLK PLL	2021-02-17 11:02:24 +01:00
common	ARM/sa1111: add a missing include of dma-map-ops.h	2020-10-20 09:40:33 +02:00
configs	mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING	2020-12-06 10:19:07 -08:00
crypto	crypto: arm/aes-ce - work around Cortex-A57/A72 silion errata	2020-12-30 11:54:11 +01:00
include	ARM: kexec: fix oops after TLB are invalidated	2021-02-17 11:02:24 +01:00
kernel	ARM: kexec: fix oops after TLB are invalidated	2021-02-17 11:02:24 +01:00
lib	arm: propagate the calling convention changes down to csum_partial_copy_from_user()	2020-08-20 15:45:16 -04:00
mach-actions
mach-alpine
mach-artpec
mach-asm9260
mach-aspeed
mach-at91
mach-axxia
mach-bcm
mach-berlin
mach-clps711x
mach-cns3xxx
mach-davinci	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
mach-digicolor
mach-dove
mach-ebsa110
mach-efm32
mach-ep93xx	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mach-exynos	Samsung mach/soc changes for v5.10	2020-09-26 12:55:43 -07:00
mach-footbridge	ARM: footbridge: fix dc21285 PCI configuration accessors	2021-02-10 09:29:20 +01:00
mach-gemini
mach-highbank	dma-mapping: split <linux/dma-mapping.h>	2020-10-06 07:07:03 +02:00
mach-hisi	ARM: hisi: add support for SD5203 SoC	2020-09-30 09:56:03 +08:00
mach-imx	ARM: imx: build suspend-imx6.S with arm instruction set	2021-02-03 23:28:44 +01:00
mach-integrator
mach-iop32x
mach-ixp4xx	ARM/ixp4xx: add a missing include of dma-map-ops.h	2020-10-13 13:28:22 +02:00
mach-keystone	ARM: keystone: remove SECTION_SIZE_BITS/MAX_PHYSMEM_BITS	2020-12-07 15:32:04 +01:00
mach-lpc18xx
mach-lpc32xx
mach-mediatek
mach-meson
mach-milbeaut
mach-mmp	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mach-moxart
mach-mstar	ARM: mstar: Select MStar intc	2020-10-03 12:47:56 -07:00
mach-mv78xx0
mach-mvebu	mvebu fixes for 5.9 (part 1)	2020-10-26 10:11:55 +01:00
mach-mxs
mach-nomadik
mach-npcm
mach-nspire
mach-omap1	ARM: OMAP1: OSK: fix ohci-omap breakage	2021-02-10 09:29:11 +01:00
mach-omap2	ARM: OMAP2+: Fix suspcious RCU usage splats for omap_enter_idle_coupled	2021-02-17 11:02:22 +01:00
mach-orion5x	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mach-oxnas
mach-picoxcell
mach-prima2
mach-pxa	power: supply: gpio-charger: Convert to GPIO descriptors	2020-08-27 16:47:14 +02:00
mach-qcom
mach-rda
mach-realtek
mach-realview
mach-rockchip
mach-rpc	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mach-s3c	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
mach-s5pv210	ARM: s5pv210: use private pm save/restore	2020-08-19 21:33:11 +02:00
mach-sa1100	power: supply: gpio-charger: Convert to GPIO descriptors	2020-08-27 16:47:14 +02:00
mach-shmobile	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
mach-socfpga
mach-spear
mach-sti
mach-stm32	ARM: stm32: Replace HTTP links with HTTPS ones	2020-10-03 12:38:54 -07:00
mach-sunxi	ARM: sunxi: Add machine match for the Allwinner V3 SoC	2020-11-02 10:28:14 +01:00
mach-tango
mach-tegra	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mach-u300
mach-uniphier
mach-ux500
mach-versatile
mach-vexpress
mach-vt8500
mach-zx
mach-zynq
mm	ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD	2021-02-07 15:37:13 +01:00
net
nwfpe
oprofile
plat-omap	PM: AVS: smartreflex Move driver to soc specific drivers	2020-10-16 18:28:43 +02:00
plat-orion
plat-pxa
plat-versatile
probes	ARM: 9019/1: kprobes: Avoid fortify_panic() when copying optprobe template	2020-10-27 12:11:51 +00:00
tools	mm/madvise: introduce process_madvise() syscall: an external memory hinting API	2020-10-18 09:27:10 -07:00
vdso	kbuild: explicitly specify the build id style	2020-10-09 23:57:30 +09:00
vfp	ARM: 9044/1: vfp: use undef hook for VFP support detection	2020-12-30 11:54:02 +01:00
xen	arm/xen: Don't probe xenbus as part of an early initcall	2021-02-17 11:02:21 +01:00
Kbuild
Kconfig	kbuild: Hoist '--orphan-handling' into Kconfig	2020-12-01 22:45:36 +09:00
Kconfig-nommu
Kconfig.assembler
Kconfig.debug	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
Makefile	kbuild: Hoist '--orphan-handling' into Kconfig	2020-12-01 22:45:36 +09:00