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linux/arch/arm/include/asm
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Will Deacon 79d1f5c9ac ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned 
We have received multiple reports of mmap failures when running with a
2:2 vm split. These manifest as either -EINVAL with a non page-aligned
address (ending 0xaaa) or a SEGV, depending on the application. The
issue is commonly observed in children of make, which appears to use
bottom-up mmap (assumedly because it changes the stack rlimit).

Further investigation reveals that this regression was triggered by
394ef6403a ("mm: use vm_unmapped_area() on arm architecture"), whereby
TASK_UNMAPPED_BASE is no longer page-aligned for bottom-up mmap, causing
get_unmapped_area to choke on misaligned addressed.

This patch fixes the problem by defining TASK_UNMAPPED_BASE in terms of
TASK_SIZE and explicitly aligns the result to 16M, matching the other
end of the heap.

Acked-by: Nicolas Pitre <nico@linaro.org>
Reported-by: Steve Capper <steve.capper@arm.com>
Reported-by: Jean-Francois Moine <moinejf@free.fr>
Reported-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-08 12:21:07 +00:00
..
hardware
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2012-12-12 12:05:15 -08:00
mach
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2012-12-12 12:05:15 -08:00
xen
xen: arm: implement remap interfaces needed for privcmd mappings.
2012-11-29 14:00:19 +00:00
a.out-core.h
ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
2011-03-10 15:16:29 +00:00
arch_timer.h
ARM: 7538/1: delay: add registration mechanism for delay timer sources
2012-09-26 22:57:52 +01:00
asm-offsets.h
kbuild: move asm-offsets.h to include/generated
2009-12-12 13:08:14 +01:00
assembler.h
ARM: 7599/1: head: Remove boot-time HYP mode check for v5 and below
2012-12-11 00:19:29 +00:00
atomic.h
ARM: fix warnings about atomic64_read
2012-07-05 13:06:32 +01:00
barrier.h
ARM: kill off arch_is_coherent
2012-10-02 08:58:07 +02:00
bitops.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
bug.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
bugs.h
…
cache.h
ARM: implement support for read-mostly sections
2010-12-05 08:39:36 +00:00
cacheflush.h
ARM: mm: implement LoUIS API for cache maintenance ops
2012-09-25 11:20:25 +01:00
cachetype.h
ARM: 7062/1: cache: detect PIPT I-cache using CTR
2011-10-17 09:13:41 +01:00
checksum.h
…
clkdev.h
ARM: Consolidate the clkdev header files
2011-07-19 18:09:45 +02:00
cmpxchg.h
ARM: 7404/1: cmpxchg64: use atomic64 and local64 routines for cmpxchg64
2012-04-28 17:32:44 +01:00
compiler.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
cp15.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
cpu.h
ARM: kernel: add MIDR to per-CPU information data
2012-11-19 14:51:11 +00:00
cpuidle.h
cpuidle: Add common time keeping and irq enabling
2012-03-21 01:59:40 -04:00
cputype.h
ARM: kernel: enhance MPIDR macro definitions
2012-11-19 15:44:33 +00:00
cti.h
ARM: cti: fix manipulation of debug lock registers
2012-11-15 21:39:34 +00:00
delay.h
ARM: 7538/1: delay: add registration mechanism for delay timer sources
2012-09-26 22:57:52 +01:00
device.h
ARM: dma-mapping: add support for IOMMU mapper
2012-05-21 15:06:23 +02:00
div64.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
dma-contiguous.h
ARM: integrate CMA with DMA-mapping subsystem
2012-05-21 15:09:38 +02:00
dma-iommu.h
ARM: dma-mapping: add support for IOMMU mapper
2012-05-21 15:06:23 +02:00
dma-mapping.h
Merge tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
2012-12-20 10:07:25 -08:00
dma.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
domain.h
ARM: fix set_domain() macro
2012-07-05 09:50:55 +01:00
ecard.h
ARM: io: ecard: move ioaddr() inside __ecard_address
2011-08-17 08:44:16 +01:00
edac.h
ARM: 7201/1: add EDAC atomic_scrub function
2011-12-11 08:35:50 +00:00
elf.h
ARM: 7294/1: vectors: use gate_vma for vectors user mapping
2012-03-24 09:38:51 +00:00
entry-macro-multi.S
ARM: gic: consolidate PPI handling
2011-10-23 13:32:29 +01:00
exception.h
ARM: 7115/4: move __exception and friends to asm/exception.h
2011-10-17 09:02:44 +01:00
fb.h
…
fiq.h
ARM: 6940/1: fiq: Briefly document driver responsibilities for suspend/resume
2011-05-26 10:31:06 +01:00
fixmap.h
[ARM] fixmap support
2009-03-15 21:01:20 -04:00
flat.h
ARM: binfmt_flat: unused variable 'persistent'
2012-10-09 20:29:06 +02:00
floppy.h
…
fncpy.h
ARM: 6640/1: Thumb-2: Symbol manipulation macros for function body copying
2011-01-27 11:48:58 +00:00
fpstate.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
ftrace.h
ARM: 6319/1: ftrace: add Thumb-2 support to dynamic ftrace
2010-09-02 15:28:43 +01:00
futex.h
ARM: 7425/1: extable: ensure fixup entries are 4-byte aligned
2012-06-16 16:30:25 +01:00
glue-cache.h
Merge branch 'fixes' into for-linus
2012-10-11 10:55:04 +01:00
glue-df.h
ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs
2012-05-05 05:50:50 +01:00
glue-pf.h
ARM: move cache/processor/fault glue to separate include files
2011-02-12 11:52:21 +00:00
glue-proc.h
ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs
2012-05-05 05:50:50 +01:00
glue.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
gpio.h
ARM: make mach/gpio.h headers optional
2012-09-14 09:21:59 -05:00
hardirq.h
ARM: 7536/1: smp: Formalize an IPI for wakeup
2012-09-19 21:52:08 +01:00
highmem.h
highmem: kill all __kmap_atomic()
2012-03-20 21:48:30 +08:00
hw_breakpoint.h
ARM: hw_breakpoint: use CRn as argument for debug reg accessor macros
2012-11-09 11:47:06 +00:00
hw_irq.h
arm: dove: Use proper irq accessor functions
2011-03-29 14:47:57 +02:00
hwcap.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
hypervisor.h
arm: initial Xen support
2012-09-14 13:53:39 +00:00
ide.h
…
idmap.h
ARM: SMP: use idmap_pgd for mapping MMU enable during secondary booting
2011-12-06 14:04:15 +00:00
io.h
Merge 3.7-rc6 into char-misc-next
2012-11-16 18:21:36 -08:00
irq.h
ARM: only include mach/irqs.h for !SPARSE_IRQ
2012-01-30 13:24:37 -06:00
irqflags.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
jump_label.h
ARM: 7386/1: jump_label: fixup for rename to static_key
2012-04-15 22:00:31 +01:00
Kbuild
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-12-12 11:30:02 -08:00
kexec.h
[ARM] add machine-specific hook to machine_kexec
2011-03-03 16:26:55 -05:00
kgdb.h
kgdb,arm: fix register dump
2010-10-29 13:14:40 -05:00
kmap_types.h
arm: remove km_type definitions
2012-07-24 15:27:28 +08:00
kprobes.h
Kernel: Audit Support For The ARM Platform
2012-01-17 16:17:01 -05:00
limits.h
…
linkage.h
…
localtimer.h
ARM: local timers: make the runtime registration interface mandatory
2012-03-13 13:45:55 +00:00
mach-types.h
arm: move mach-types to include/generated
2009-12-12 13:08:14 +01:00
mc146818rtc.h
ARM: mc146818rtc: remove unnecessary include of mach/irqs.h
2012-01-25 20:37:45 -06:00
memblock.h
ARM: Add arm_memblock_steal() to allocate memory away from the kernel
2012-01-13 15:02:35 +00:00
memory.h
ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned
2013-02-08 12:21:07 +00:00
mmu_context.h
ARM: 7582/2: rename kvm_seq to vmalloc_seq so to avoid confusion with KVM
2012-11-26 12:23:53 +00:00
mmu.h
ARM: 7582/2: rename kvm_seq to vmalloc_seq so to avoid confusion with KVM
2012-11-26 12:23:53 +00:00
module.h
Make most arch asm/module.h files use asm-generic/module.h
2012-09-28 14:31:03 +09:30
mtd-xip.h
[ARM] move asm/xip.h's mach/hardware.h include to mach/xip.h
2008-12-14 13:22:51 +00:00
mutex.h
ARM: 7495/1: mutex: use generic atomic_dec-based implementation for ARMv6+
2012-08-25 09:22:31 +01:00
nwflash.h
…
opcodes-virt.h
ARM: opcodes: add __ERET/__MSR_ELR_HYP instruction encoding
2012-09-19 08:32:49 +01:00
opcodes.h
ARM: 7511/1: opcodes: Opcode definitions for the Virtualization Extensions
2012-09-15 21:26:00 +01:00
outercache.h
ARM: 7114/1: cache-l2x0: add resume entry for l2 in secure mode
2011-10-17 09:11:51 +01:00
page-nommu.h
nommu: Remove the memory_start/end variables from ARM page-nommu.h
2009-07-24 12:35:01 +01:00
page.h
UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
2012-10-02 18:01:25 +01:00
pci.h
PCI: collapse pcibios_resource_to_bus
2012-02-23 20:19:04 -07:00
percpu.h
ARM: 7587/1: implement optimized percpu variable access
2012-12-03 11:16:36 +00:00
perf_event.h
ARM: 7584/1: perf: fix link error when CONFIG_HW_PERF_EVENTS is not selected
2012-11-23 13:01:30 +00:00
pgalloc.h
ARM: LPAE: Page table maintenance for the 3-level format
2011-12-08 10:30:39 +00:00
pgtable-2level-hwdef.h
ARM: 7077/1: LPAE: Use a mask for physical addresses in page table entries
2011-10-06 15:40:06 +01:00
pgtable-2level-types.h
ARM: 7076/1: LPAE: Add (pte|pmd)val_t type definitions as u32
2011-10-06 15:40:05 +01:00
pgtable-2level.h
ARM: mm: introduce present, faulting entries for PAGE_NONE
2012-11-09 14:13:20 +00:00
pgtable-3level-hwdef.h
ARM: LPAE: Introduce the 3-level page table format definitions
2011-12-08 10:30:39 +00:00
pgtable-3level-types.h
ARM: LPAE: Introduce the 3-level page table format definitions
2011-12-08 10:30:39 +00:00
pgtable-3level.h
ARM: mm: introduce present, faulting entries for PAGE_NONE
2012-11-09 14:13:20 +00:00
pgtable-hwdef.h
ARM: LPAE: Introduce the 3-level page table format definitions
2011-12-08 10:30:39 +00:00
pgtable-nommu.h
Remove remaining bits of io_remap_page_range()
2012-03-23 16:58:31 -07:00
pgtable.h
ARM: mm: introduce present, faulting entries for PAGE_NONE
2012-11-09 14:13:20 +00:00
pmu.h
ARM: perf: consistently use arm_pmu->name for PMU name
2012-11-09 11:37:26 +00:00
proc-fns.h
ARM: LPAE: Page table maintenance for the 3-level format
2011-12-08 10:30:39 +00:00
processor.h
arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk]
2012-09-30 22:21:36 -04:00
procinfo.h
…
prom.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-12-12 11:30:02 -08:00
ptrace.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
scatterlist.h
ARM: Allow SoCs to enable scatterlist chaining
2011-06-02 11:16:22 +01:00
sched_clock.h
ARM: 7565/1: sched: stop sched_clock() during suspend
2012-10-29 10:02:49 +00:00
seccomp.h
ARM: SECCOMP support
2010-10-01 22:32:18 -04:00
setup.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
shmparam.h
…
signal.h
unify default ptrace_signal_deliver
2012-11-29 00:01:23 -05:00
smp_plat.h
ARM: kernel: add logical mappings look-up
2012-11-19 15:44:34 +00:00
smp_scu.h
ARM: pm: add function to set WFI low-power mode for SMP CPUs
2011-02-11 12:29:18 +00:00
smp_twd.h
ARM: smp_twd: remove old local timer interface
2012-03-13 13:45:54 +00:00
smp.h
ARM: 7571/1: SMP: add function arch_send_wakeup_ipi_mask()
2012-11-13 11:47:40 +00:00
sparsemem.h
[ARM] mm: enable sparsemem on clps7500 and RiscPC
2008-10-01 17:24:04 +01:00
spinlock_types.h
ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation
2012-07-09 17:41:10 +01:00
spinlock.h
ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines
2012-07-09 17:41:10 +01:00
stackprotector.h
ARM: initial stack protector (-fstack-protector) support
2010-06-14 21:31:00 -04:00
stacktrace.h
[ARM] 5382/1: unwind: Reorganise the stacktrace support
2009-02-12 13:21:17 +00:00
string.h
[ARM] remove memzero()
2008-11-27 12:37:59 +00:00
suspend.h
ARM: pm: preallocate a page table for suspend/resume
2011-09-20 23:33:36 +01:00
swab.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
switch_to.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
sync_bitops.h
xen/arm: sync_bitops
2012-08-08 16:34:01 +00:00
syscall.h
ARM: 7577/1: arch/add syscall_get_arch
2012-11-19 14:14:17 +00:00
system_info.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
system_misc.h
Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system
2012-03-28 15:58:21 -07:00
system.h
the only place that needs to include asm/exec.h is linux/binfmts.h
2012-09-20 09:51:13 -04:00
tcm.h
ARM: 6985/1: export functions to determine the presence of I/DTCM
2011-07-06 20:49:45 +01:00
therm.h
…
thread_info.h
ARM: 7578/1: arch/move secure_computing into trace
2012-11-19 14:14:17 +00:00
thread_notify.h
ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks
2011-04-10 21:13:36 +01:00
timex.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-10-07 21:20:57 +09:00
tlb.h
ARM: 7503/1: mm: only flush both pmd entries for classic MMU
2012-08-25 09:15:57 +01:00
tlbflush.h
ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs
2012-05-05 05:50:50 +01:00
tls.h
ARM: 7403/1: tls: remove covert channel via TPIDRURW
2012-04-28 11:01:30 +01:00
topology.h
ARM: 7182/1: ARM cpu topology: fix warning
2011-11-30 23:55:21 +00:00
traps.h
ARM: earlier initialization of vectors page
2012-01-23 10:24:11 +00:00
uaccess.h
ARM: warnings in arch/arm/include/asm/uaccess.h
2012-10-09 20:29:07 +02:00
ucontext.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
unified.h
ARM: make BSYM macro assembly only
2012-01-16 08:56:25 -06:00
unistd.h
Bury the conditionals from kernel_thread/kernel_execve series
2012-12-19 18:07:38 -05:00
unwind.h
ARM: 7187/1: fix unwinding for XIP kernels
2011-12-06 11:16:13 +00:00
user.h
ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
2011-03-10 15:16:29 +00:00
vfp.h
…
vfpmacros.h
ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set
2012-10-29 10:04:05 +00:00
vga.h
ARM: set vga memory base at run-time
2011-07-12 11:19:29 -05:00
virt.h
ARM: virt: Add boot-time diagnostics
2012-09-19 08:32:52 +01:00
word-at-a-time.h
ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs
2012-07-09 17:41:11 +01:00
xor.h
…