android_kernel_oneplus_msm8998/arch
Kees Cook 43cf90f788 arm64: move ELF_ET_DYN_BASE to 4GB / 4MB
commit 02445990a96e60a67526510d8b00f7e3d14101c3 upstream.

Now that explicitly executed loaders are loaded in the mmap region, we
have more freedom to decide where we position PIE binaries in the
address space to avoid possible collisions with mmap or stack regions.

For 64-bit, align to 4GB to allow runtimes to use the entire 32-bit
address space for 32-bit pointers.  On 32-bit use 4MB, to match ARM.
This could be 0x8000, the standard ET_EXEC load address, but that is
needlessly close to the NULL address, and anyone running arm compat PIE
will have an MMU, so the tight mapping is not needed.

Link: http://lkml.kernel.org/r/1498251600-132458-4-git-send-email-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-21 07:44:57 +02:00
..
alpha osf_wait4(): fix infoleak 2017-05-25 14:30:17 +02:00
arc mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
arm arm: move ELF_ET_DYN_BASE to 4MB 2017-07-21 07:44:57 +02:00
arm64 arm64: move ELF_ET_DYN_BASE to 4GB / 4MB 2017-07-21 07:44:57 +02:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin net: smc91x: fix SMC accesses 2016-09-30 10:18:37 +02:00
c6x c6x/ptrace: Remove useless PTRACE_SETREGSET implementation 2017-03-31 09:49:53 +02:00
cris cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected 2017-01-12 11:22:48 +01:00
frv mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
h8300 h8300/ptrace: Fix incorrect register transfer count 2017-03-31 09:49:53 +02:00
hexagon hexagon: fix strncpy_from_user() error return 2016-09-24 10:07:44 +02:00
ia64 ia64: copy_from_user() should zero the destination on access_ok() failure 2016-09-24 10:07:46 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k m68k: Fix ndelay() macro 2016-12-15 08:49:23 -08:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze microblaze: fix copy_from_user() 2016-09-24 10:07:43 +02:00
mips MIPS: ralink: fix MT7628 wled_an pinmux gpio 2017-07-05 14:37:17 +02:00
mn10300 mn10300: copy_from_user() should zero on access_ok() failure... 2016-09-24 10:07:45 +02:00
nios2 nios2: reserve boot memory for device tree 2017-04-12 12:38:34 +02:00
openrisc openrisc: fix the fix of copy_from_user() 2016-09-24 10:07:46 +02:00
parisc parisc/mm: Ensure IRQs are off in switch_mm() 2017-07-21 07:44:56 +02:00
powerpc powerpc/eeh: Enable IO path on permanent error 2017-07-05 14:37:18 +02:00
s390 s390/ctl_reg: make __ctl_load a full memory barrier 2017-07-05 14:37:20 +02:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
sparc mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
tile mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
um um: Don't discard .text.exit section 2016-09-07 08:32:38 +02:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 binfmt_elf: use ELF_ET_DYN_BASE only for PIE 2017-07-21 07:44:57 +02:00
xtensa mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
.gitignore
Kconfig kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00