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3f4aa45cee
linux/arch/arm/kernel
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Vladimir Murzin 3f4aa45cee ARM: 8226/1: cacheflush: get rid of restarting block 
We cannot restart cacheflush safely if a process provides user-defined
signal handler and signal is pending. In this case -EINTR is returned
and it is expected that process re-invokes syscall. However, there are
a few problems with that:
 * looks like nobody bothers checking return value from cacheflush
 * but if it did, we don't provide the restart address for that, so the
   process has to use the same range again
 * ...and again, what might lead to looping forever

So, remove cacheflush restarting code and terminate cache flushing
as early as fatal signal is pending.

Cc: stable@vger.kernel.org # 3.12+
Reported-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-11-27 15:55:35 +00:00
..
.gitignore
arch_timer.c
armksyms.c ARM: 8151/1: add missing exports for asm functions required by get_user macro 2014-09-16 16:09:30 +01:00
arthur.c
asm-offsets.c KVM: arm/arm64: vgic: move GICv2 registers to their own structure 2014-07-11 04:57:31 -07:00
atags_compat.c
atags_parse.c ARM: 8152/1: Convert pr_warning to pr_warn 2014-09-26 14:39:53 +01:00
atags_proc.c
atags.h
bios32.c ARM/PCI: Call pcie_bus_configure_settings() to set MPS 2014-05-30 10:50:57 -06:00
calls.S ARM: enable bpf syscall 2014-10-29 00:18:20 +00:00
cpuidle.c
crash_dump.c ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr 2014-04-07 12:10:00 +01:00
debug.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
devtree.c arm: Add devicetree fixup machine function 2014-07-29 21:26:49 -06:00
dma-isa.c
dma.c
early_printk.c
elf.c
entry-armv.S Merge branches 'fiq' (early part), 'fixes', 'l2c' (early part) and 'misc' into for-next 2014-10-02 21:47:02 +01:00
entry-common.S ARM: Avoid writing to control register on every exception 2014-09-26 14:39:54 +01:00
entry-header.S Merge branches 'fiq' (early part), 'fixes', 'l2c' (early part) and 'misc' into for-next 2014-10-02 21:47:02 +01:00
entry-v7m.S
etm.c
fiq.c ARM: 8150/3: fiq: Replace default FIQ handler 2014-09-18 00:35:18 +01:00
fiqasm.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
ftrace.c ARM: 8022/1: ftrace: work with CONFIG_DEBUG_SET_MODULE_RONX 2014-04-23 01:24:31 +01:00
head-common.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
head-nommu.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
head.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
hibernate.c nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
hw_breakpoint.c ARM: 8152/1: Convert pr_warning to pr_warn 2014-09-26 14:39:53 +01:00
hyp-stub.S Here are the PPC and ARM changes for KVM, which I separated because 2014-08-07 11:35:30 -07:00
insn.c
insn.h
io.c
irq.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:42:04 -04:00
isa.c arm: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:15 -07:00
iwmmxt.S Merge branches 'fixes' and 'misc' into for-next 2014-08-05 10:27:13 +01:00
jump_label.c
kgdb.c ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction 2014-08-02 15:20:30 +01:00
kprobes-arm.c
kprobes-common.c ARM: probes: fix instruction fetch order with <asm/opcodes.h> 2014-04-01 16:45:19 +03:00
kprobes-test-arm.c ARM: kprobes: Fix test code compilation errors for ARMv4 targets 2014-07-02 12:48:36 +01:00
kprobes-test-thumb.c ARM: kprobes-test: use <asm/opcodes.h> for Thumb instruction building 2014-04-01 16:48:26 +03:00
kprobes-test.c ARM: 8179/1: kprobes-test: Fix compile error "bad immediate value for offset" 2014-09-30 16:55:24 +01:00
kprobes-test.h ARM: 8179/1: kprobes-test: Fix compile error "bad immediate value for offset" 2014-09-30 16:55:24 +01:00
kprobes-thumb.c ARM: probes: fix instruction fetch order with <asm/opcodes.h> 2014-04-01 16:45:19 +03:00
kprobes.c ARM: probes: fix instruction fetch order with <asm/opcodes.h> 2014-04-01 16:45:19 +03:00
kprobes.h
machine_kexec.c ARM: 8030/1: ARM : kdump : add arch_crash_save_vmcoreinfo 2014-04-22 22:23:58 +01:00
Makefile Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next 2014-06-05 12:35:52 +01:00
module.c ARM: 8127/1: module: add support for R_ARM_TARGET1 relocations 2014-08-27 15:40:11 +01:00
opcodes.c
patch.c
patch.h
perf_event_cpu.c Merge branches 'fiq' (early part), 'fixes', 'l2c' (early part) and 'misc' into for-next 2014-10-02 21:47:02 +01:00
perf_event_v6.c arm: perf: clean up PMU names 2014-07-02 15:48:25 +01:00
perf_event_v7.c arm: perf: krait: stop using singleton PMU 2014-07-02 15:48:26 +01:00
perf_event_xscale.c arm: perf: clean up PMU names 2014-07-02 15:48:25 +01:00
perf_event.c Merge branch 'devel-stable' into for-next 2014-08-05 10:27:25 +01:00
perf_regs.c
pj4-cp0.c ARM: 8040/1: pj4: properly detect existence of iWMMXt coprocessor 2014-04-25 12:07:34 +01:00
probes-arm.c ARM: kprobes: Disallow instructions with PC and register specified shift 2014-07-02 12:48:36 +01:00
probes-arm.h
probes-thumb.c
probes-thumb.h
probes.c ARM: probes: fix instruction fetch order with <asm/opcodes.h> 2014-04-01 16:45:19 +03:00
probes.h
process.c Immutable branch with restart handler patches for v3.18 2014-10-10 16:38:02 -04:00
psci_smp.c ARM: Check if a CPU has gone offline 2014-05-15 10:16:30 -04:00
psci.c PSCI: Add initial support for PSCIv0.2 functions 2014-05-15 10:16:00 -04:00
ptrace.c Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
relocate_kernel.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
return_address.c ARM: 8160/1: drop warning about return_address not using unwind tables 2014-09-26 14:40:07 +01:00
setup.c ARM: 8150/3: fiq: Replace default FIQ handler 2014-09-18 00:35:18 +01:00
signal.c
sigreturn_codes.S
sleep.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
smp_scu.c ARM: 8122/1: smp_scu: enable SCU standby support 2014-08-02 08:51:53 +01:00
smp_tlb.c ARM: 8111/1: Enable erratum 798181 for Broadcom Brahma-B15 2014-07-24 14:40:26 +01:00
smp_twd.c arm: Replace __this_cpu_ptr with raw_cpu_ptr 2014-08-26 13:45:50 -04:00
smp.c Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:30:57 -04:00
stacktrace.c ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation 2014-05-30 01:12:32 +01:00
suspend.c
swp_emulate.c ARM: 8135/1: Fix in-correct barrier usage in SWP{B} emulation 2014-09-12 17:38:58 +01:00
sys_arm.c
sys_oabi-compat.c locks: rename file-private locks to "open file description locks" 2014-04-22 08:23:58 -04:00
tcm.c
thumbee.c ARM: 8148/1: flush TLS and thumbee register state during exec 2014-09-16 16:09:32 +01:00
time.c ARM: 8072/1: time: Make use of arm_get_current_stackframe 2014-07-18 12:29:14 +01:00
topology.c ARM: topology: Use the new cpu_capacity interface 2014-09-19 12:35:27 +02:00
traps.c ARM: 8226/1: cacheflush: get rid of restarting block 2014-11-27 15:55:35 +00:00
unwind.c ARM: 8152/1: Convert pr_warning to pr_warn 2014-09-26 14:39:53 +01:00
uprobes-arm.c
uprobes.c ARM: 8043/1: uprobes need icache flush after xol write 2014-05-25 23:48:45 +01:00
uprobes.h
v7m.c
vmlinux.lds.S ARM: 8168/1: extend __init_end to a page align address 2014-10-02 21:28:16 +01:00
xscale-cp0.c