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9b55613f42
linux-kernel-test/arch/arm
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Russell King 9b55613f42 ARM: fix Thumb2 signal handling when ARMv6 is enabled 
When a kernel is built covering ARMv6 to ARMv7, we omit to clear the
IT state when entering a signal handler.  This can cause the first
few instructions to be conditionally executed depending on the parent
context.

In any case, the original test for >= ARMv7 is broken - ARMv6 can have
Thumb-2 support as well, and an ARMv6T2 specific build would omit this
code too.

Relax the test back to ARMv6 or greater.  This results in us always
clearing the IT state bits in the PSR, even on CPUs where these bits
are reserved.  However, they're reserved for the IT state, so this
should cause no harm.

Cc: <stable@vger.kernel.org>
Fixes: d71e1352e2 ("Clear the IT state when invoking a Thumb-2 signal handler")
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-09-16 10:35:40 +01:00
..
boot Minor fixes for omaps against v4.2-rc1. Mostly just minor dts changes 2015-07-09 15:38:16 -07:00
common TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
configs Allwinner late changes for 4.2 2015-07-09 15:08:44 -07:00
crypto
firmware
include Merge branch 'uaccess' into fixes 2015-09-11 19:18:28 +01:00
kernel ARM: fix Thumb2 signal handling when ARMv6 is enabled 2015-09-16 10:35:40 +01:00
kvm Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
lib Merge branch 'uaccess' into fixes 2015-09-11 19:18:28 +01:00
mach-alpine
mach-asm9260
mach-at91 genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-axxia
mach-bcm ARM: BCM: Do not select CONFIG_MTD_NAND_BRCMNAND 2015-07-01 13:04:13 -07:00
mach-berlin ARM: SoC: driver updates for v4.2 2015-06-26 11:54:29 -07:00
mach-clps711x
mach-cns3xxx
mach-davinci ARM: SoC cleanups for v4.2 2015-06-26 11:08:27 -07:00
mach-digicolor
mach-dove ARM: dove: fix legacy dove IRQ numbers 2015-06-24 11:05:57 +02:00
mach-ebsa110
mach-efm32
mach-ep93xx ARM: ep93xx: simone: support for SPI-based MMC/SD cards 2015-06-11 14:21:29 -07:00
mach-exynos The changes to the common clock framework for 4.2 are dominated by new 2015-07-01 19:22:00 -07:00
mach-footbridge
mach-gemini ARM: gemini: Fix race in installing GPIO chained IRQ handler 2015-06-18 14:03:08 +02:00
mach-highbank
mach-hisi arm/mach-hisi: remove legacy __CPUINIT section that crept in 2015-06-16 14:12:21 -04:00
mach-imx genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-integrator
mach-iop13xx
mach-iop32x
mach-iop33x
mach-ixp4xx
mach-keystone Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
mach-ks8695
mach-lpc18xx
mach-lpc32xx Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-07-01 15:19:35 -07:00
mach-mediatek
mach-meson
mach-mmp
mach-moxart
mach-mv78xx0
mach-mvebu ARM: SoC: late fixes and dependencies 2015-07-02 14:40:49 -07:00
mach-mxs
mach-netx
mach-nomadik
mach-nspire
mach-omap1 ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-omap2 Merge branch 'fixes-rc1' into omap-for-v4.2/fixes 2015-07-06 05:33:17 -07:00
mach-orion5x
mach-picoxcell
mach-prima2 move CSR rtc iobrg read/write API to be regmap 2015-07-08 14:20:12 -07:00
mach-pxa ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-qcom
mach-realview
mach-rockchip Remove __cpuinit macros and users. 2015-07-02 09:54:14 -07:00
mach-rpc
mach-s3c24xx
mach-s3c64xx
mach-s5pv210
mach-sa1100 Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
mach-shmobile ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-socfpga genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-spear
mach-sti
mach-stm32
mach-sunxi Allwinner late changes for 4.2 2015-07-09 15:08:44 -07:00
mach-tegra ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-u300
mach-uniphier
mach-ux500
mach-versatile
mach-vexpress arm: don't use module_init in non-modular mach-vexpress/spc.c code 2015-06-16 14:12:29 -04:00
mach-vt8500
mach-w90x900
mach-zx
mach-zynq ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mm Merge branch 'uaccess' into fixes 2015-09-11 19:18:28 +01:00
net
nwfpe ARM: swpan: fix nwfpe for uaccess changes 2015-09-09 23:26:11 +01:00
oprofile
plat-iop
plat-omap
plat-orion
plat-pxa
plat-samsung ARM: SAMSUNG: Constify platform_device_id 2015-06-06 02:18:02 +09:00
plat-versatile
probes
tools
vdso ARM: 8405/1: VDSO: fix regression with toolchains lacking ld.bfd executable 2015-07-31 18:54:45 +01:00
vfp
xen arm/xen: Enable user access to the kernel before issuing a privcmd call 2015-09-11 18:50:03 +01:00
Kconfig Merge branch 'uaccess' into fixes 2015-09-11 19:18:28 +01:00
Kconfig-nommu
Kconfig.debug Merge branches 'fixes' and 'ioremap' into for-linus 2015-07-07 12:35:33 +01:00
Makefile ARM: 8429/1: disable GCC SRA optimization 2015-09-07 13:24:05 +01:00