Thomas Garnier 2404269bc4 Revert "arm/syscalls: Check address limit on user-mode return" ... This reverts commit 73ac5d6a2b. The work pending loop can call set_fs after addr_limit_user_check removed the _TIF_FSCHECK flag. This may happen at anytime based on how ARM handles alignment exceptions. It leads to an infinite loop condition. After discussion, it has been agreed that the generic approach is not tailored to the ARM architecture and any fix might not be complete. This patch will be replaced by an architecture specific implementation. The work flag approach will be kept for other architectures. Reported-by: Leonard Crestez <leonard.crestez@nxp.com> Signed-off-by: Thomas Garnier <thgarnie@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Pratyush Anand <panand@redhat.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Will Drewry <wad@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Andy Lutomirski <luto@amacapital.net> Cc: David Howells <dhowells@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-api@vger.kernel.org Cc: Yonghong Song <yhs@fb.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1504798247-48833-3-git-send-email-keescook@chromium.org		2017-09-17 19:45:33 +02:00
..
hardware	ARM/clk: move the ICST library to drivers/clk	2017-04-07 11:58:12 +02:00
mach	ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge()	2017-06-28 15:13:55 -05:00
xen	xen: avoid type warning in xchg_xen_ulong	2017-06-08 15:07:38 -07:00
arch_gicv3.h	irqchip/gic-v3-its: Add VPE interrupt masking	2017-08-31 15:31:38 +01:00
arch_timer.h
arm-cci.h
asm-offsets.h
assembler.h	ARM: Prepare for randomized task_struct	2017-06-30 12:00:50 -07:00
atomic.h
auxvec.h
barrier.h
bitops.h	ARM: 8679/1: bitops: Align prototypes to generic API	2017-06-18 22:36:33 +01:00
bitrev.h
bL_switcher.h
bug.h	debug: Fix WARN_ON_ONCE() for modules	2017-07-20 12:31:04 +02:00
bugs.h
cache.h
cacheflush.h	randstruct: opt-out externally exposed function pointer structs	2017-06-30 12:00:52 -07:00
cachetype.h	ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype()	2016-09-06 15:51:07 +01:00
checksum.h
clocksource.h	arm/arm64: arch_timer: Use archdata to indicate vdso suitability	2016-09-23 17:19:25 +01:00
cmpxchg.h
compiler.h
cp15.h	ARM: Move system register accessors to asm/cp15.h	2016-09-22 13:22:10 +02:00
cpu.h
cpufeature.h	ARM: 8663/1: wire up HWCAP/HWCAP2 feature bits to the CPU modalias	2017-03-30 19:45:52 +01:00
cpuidle.h
cputype.h	ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs	2017-01-10 23:32:26 +00:00
cti.h
dcc.h
delay.h	ARM: 8619/1: udelay: document the various constants	2016-10-19 10:52:36 +01:00
device.h	ARM: dma-mapping: Don't tear down third-party mappings	2017-05-30 11:31:33 +02:00
div64.h
dma-contiguous.h
dma-iommu.h	arm: remove arch specific dma_supported implementation	2017-06-28 06:54:45 -07:00
dma-mapping.h	ARM: NOMMU: Introduce dma operations for noMMU	2017-06-30 10:03:09 -07:00
dma.h
dmi.h	efi/arm: Enable DMI/SMBIOS	2017-06-05 17:50:44 +02:00
domain.h
ecard.h
edac.h
efi.h	efi/arm-stub: Correct FDT and initrd allocation rules for arm64	2017-04-05 12:27:23 +02:00
elf.h	arm: move ELF_ET_DYN_BASE to 4MB	2017-07-10 16:32:36 -07:00
entry-macro-multi.S
exception.h
fb.h
fiq.h
firmware.h
fixmap.h	ARM: 8667/3: Fix memory attribute inconsistencies when using fixmap	2017-04-20 11:19:42 +01:00
flat.h	binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail	2017-07-03 18:44:02 -04:00
floppy.h
fncpy.h
fpstate.h
ftrace.h	ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS	2017-06-18 22:25:16 +01:00
futex.h	futex: Remove duplicated code and fix undefined behaviour	2017-08-25 22:49:59 +02:00
glue-cache.h	ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.	2016-09-06 15:51:08 +01:00
glue-df.h
glue-pf.h
glue-proc.h
glue.h
gpio.h
hardirq.h
highmem.h
hugetlb-3level.h
hugetlb.h
hw_breakpoint.h	ARM: 8598/1: remove traces of perf_ops_bp	2016-08-23 10:09:23 +01:00
hw_irq.h
hwcap.h
hypervisor.h
ide.h
idmap.h
insn.h
io.h	ARM: Implement pci_remap_cfgspace() interface	2017-04-24 13:53:13 -05:00
irq.h	nmi_backtrace: add more trigger_*_cpu_backtrace() methods	2016-10-07 18:46:30 -07:00
irq_work.h
irqflags.h
jump_label.h
Kbuild	ARM: move generic-y of exported headers to uapi/asm/Kbuild	2017-07-10 03:43:20 +09:00
kexec.h	ARM: kexec: fix failure to boot crash kernel	2017-07-20 11:37:42 +01:00
kgdb.h
kmap_types.h
kprobes.h	kprobes: move kprobe declarations to asm-generic/kprobes.h	2017-02-27 18:43:45 -08:00
kvm_arm.h	KVM: arm/arm64: Fix guest external abort matching	2017-09-05 17:33:37 +02:00
kvm_asm.h	ARM: KVM: Gracefully handle hyp-stubs being restored from under our feet	2017-04-09 07:49:31 -07:00
kvm_coproc.h	KVM: arm: plug potential guest hardware debug leakage	2017-05-15 14:29:19 +02:00
kvm_emulate.h	KVM: arm/arm64: Fix guest external abort matching	2017-09-05 17:33:37 +02:00
kvm_host.h	KVM: update to new mmu_notifier semantic v2	2017-08-31 16:13:00 -07:00
kvm_hyp.h	ARM: KVM: move asmlinkage before type	2017-07-12 16:26:04 -07:00
kvm_mmio.h
kvm_mmu.h	arm/arm64: KVM: Remove kvm_get_idmap_start	2017-04-09 07:49:32 -07:00
kvm_psci.h
limits.h
linkage.h
mc146818rtc.h
mcpm.h
mcs_spinlock.h
memblock.h
memory.h	ARM: 8648/2: nommu: display vectors base	2017-02-28 11:06:14 +00:00
mmu.h
mmu_context.h	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
module.h	ARM: 8662/1: module: split core and init PLT sections	2017-03-17 10:01:28 +00:00
mpu.h
mtd-xip.h
neon.h
nwflash.h
opcodes-sec.h
opcodes-virt.h
opcodes.h
outercache.h
page-nommu.h	ARM: 8684/1: NOMMU: Remove unused KTHREAD_SIZE definition	2017-06-27 14:58:10 +01:00
page.h
paravirt.h
patch.h
pci.h	ARM/PCI: Use generic pci_mmap_resource_range()	2017-04-20 08:47:47 -05:00
percpu.h
perf_event.h
pgalloc.h
pgtable-2level-hwdef.h	ARM: 8612/1: LPAE: initialize cache policy correctly	2016-09-12 12:12:30 +01:00
pgtable-2level-types.h
pgtable-2level.h
pgtable-3level-hwdef.h	ARM: 8612/1: LPAE: initialize cache policy correctly	2016-09-12 12:12:30 +01:00
pgtable-3level-types.h
pgtable-3level.h
pgtable-hwdef.h
pgtable-nommu.h	ARM: 8676/1: NOMMU: provide pgprot_device() macro	2017-06-05 10:29:40 +01:00
pgtable.h	arch, mm: convert all architectures to use 5level-fixup.h	2017-03-09 11:48:47 -08:00
probes.h
proc-fns.h	ARM: soft-reboot into same mode that we entered the kernel	2017-04-09 07:49:24 -07:00
processor.h	locking/core: Provide common cpu_relax_yield() definition	2016-11-17 08:17:36 +01:00
procinfo.h
prom.h
psci.h
ptrace.h
sections.h
set_memory.h	treewide: move set_memory_* functions away from cacheflush.h	2017-05-08 17:15:13 -07:00
setup.h
shmparam.h
signal.h
smp.h
smp_plat.h
smp_scu.h	ARM: 8689/1: scu: add missing errno include	2017-08-02 14:14:54 +01:00
smp_twd.h
sparsemem.h
spinlock.h	arch: Remove spin_unlock_wait() arch-specific definitions	2017-08-17 08:08:59 -07:00
spinlock_types.h
stackprotector.h
stacktrace.h
stage2_pgtable.h
string.h	ARM: implement memset32 & memset64	2017-09-08 18:26:48 -07:00
suspend.h	ARM: 8688/1: pm: add missing types include	2017-08-02 14:14:28 +01:00
swab.h
switch_to.h
sync_bitops.h
syscall.h
system_info.h
system_misc.h	arm/arm64: KVM: add guest SEA support	2017-06-22 18:22:05 +01:00
tcm.h
therm.h
thread_info.h	Revert "arm/syscalls: Check address limit on user-mode return"	2017-09-17 19:45:33 +02:00
thread_notify.h
timex.h
tlb.h	mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem	2017-08-10 15:54:07 -07:00
tlbflush.h	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
tls.h
topology.h
traps.h	irq: Make the irqentry text section unconditional	2017-08-10 16:28:53 +02:00
trusted_foundations.h	treewide: remove redundant #include <linux/kconfig.h>	2016-10-11 15:06:33 -07:00
uaccess.h	Revert "arm/syscalls: Check address limit on user-mode return"	2017-09-17 19:45:33 +02:00
ucontext.h	ARM: 8687/1: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[]	2017-07-24 14:26:55 +01:00
unified.h
unistd.h	ARM: wire up new pkey syscalls	2016-10-19 10:18:47 +01:00
unwind.h
uprobes.h
user.h
v7m.h	ARM: 8603/1: V7M: Add addresses for mem-mapped V7M cache operations	2016-09-06 15:51:06 +01:00
vdso.h
vdso_datapage.h
vfp.h
vfpmacros.h
vga.h
virt.h	ARM: hyp-stub/KVM: Kill __hyp_get_vectors	2017-04-09 07:49:34 -07:00
word-at-a-time.h
xor.h