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Douglas Anderson 13081d5ddb ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses
[ Upstream commit 22c9e58299 ]

This is commit fdfeff0f9e ("arm64: hw_breakpoint: Handle inexact
watchpoint addresses") but ported to arm32, which has the same
problem.

This problem was found by Android CTS tests, notably the
"watchpoint_imprecise" test [1].  I tested locally against a copycat
(simplified) version of the test though.

[1] https://android.googlesource.com/platform/bionic/+/master/tests/sys_ptrace_test.cpp

Link: https://lkml.kernel.org/r/20191019111216.1.I82eae759ca6dc28a245b043f485ca490e3015321@changeid

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-05 11:43:14 +01:00
..
alpha alpha: fix annotation of io{read,write}{16,32}be() 2020-08-26 10:40:58 +02:00
arc arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER 2020-10-29 09:57:47 +01:00
arm ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses 2020-11-05 11:43:14 +01:00
arm64 arm64: link with -z norelro regardless of CONFIG_RELOCATABLE 2020-11-01 12:01:02 +01:00
c6x mm: consolidate pgtable_cache_init() and pgd_cache_init() 2019-09-24 15:54:09 -07:00
csky csky: Fixup abiv2 syscall_trace break a4 & a5 2020-06-17 16:40:21 +02:00
h8300 mm: consolidate pgtable_cache_init() and pgd_cache_init() 2019-09-24 15:54:09 -07:00
hexagon hexagon: define ioremap_uc 2020-05-10 10:31:31 +02:00
ia64 mm: replace memmap_context by meminit_context 2020-10-07 08:01:29 +02:00
m68k m68k: q40: Fix info-leak in rtc_ioctl 2020-10-01 13:17:12 +02:00
microblaze microblaze: Prevent the overflow of the start 2020-02-24 08:37:02 +01:00
mips MIPS: Add the missing 'CPU_1074K' into __get_cpu_type() 2020-10-01 13:18:20 +02:00
nds32 asm-generic/nds32: don't redefine cacheflush primitives 2020-01-17 19:48:43 +01:00
nios2 nios2 update for v5.4-rc1 2019-09-27 13:02:19 -07:00
openrisc openrisc: Fix issue with get_user for 64-bit values 2020-11-01 12:01:06 +01:00
parisc kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables 2020-09-03 11:27:10 +02:00
powerpc powerpc: select ARCH_WANT_IRQS_OFF_ACTIVATE_MM 2020-11-05 11:43:13 +01:00
riscv RISC-V: Take text_mutex in ftrace_init_nop() 2020-10-01 13:18:14 +02:00
s390 s390/startup: avoid save_area_sync overflow 2020-11-05 11:43:14 +01:00
sh sh: landisk: Add missing initialization of sh_io_port_base 2020-08-21 13:05:38 +02:00
sparc sparc64: remove mm_cpumask clearing to fix kthread_use_mm race 2020-11-05 11:43:13 +01:00
um um: change sigio_spinlock to a mutex 2020-11-05 11:43:14 +01:00
unicore32 mm: treewide: clarify pgtable_page_{ctor,dtor}() naming 2019-09-26 10:10:44 -07:00
x86 x86/unwind/orc: Fix inactive tasks with stack pointer in %sp on GCC 10 compiled kernels 2020-11-05 11:43:12 +01:00
xtensa xtensa: fix system_call interaction with ptrace 2020-10-01 13:17:22 +02:00
.gitignore
Kconfig mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race 2020-11-05 11:43:13 +01:00