Mark Rutland 581ac5f431 arm64: ensure __dump_instr() checks addr_limit ...

commit 7a7003b1da upstream.

It's possible for a user to deliberately trigger __dump_instr with a
chosen kernel address.

Let's avoid problems resulting from this by using get_user() rather than
__get_user(), ensuring that we don't erroneously access kernel memory.

Where we use __dump_instr() on kernel text, we already switch to
KERNEL_DS, so this shouldn't adversely affect those cases.

Fixes: 60ffc30d56 ("arm64: Exception handling")
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-11-08 10:06:27 +01:00

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vdso

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.gitignore

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acpi.c

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alternative.c

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arm64ksyms.c

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armv8_deprecated.c

arm64: armv8_deprecated: ensure extension of addr

2017-06-14 13:16:27 +02:00

asm-offsets.c

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cacheinfo.c

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cpu_errata.c

arm64: Add workaround for Cavium erratum 27456

2016-09-15 08:27:44 +02:00

cpu_ops.c

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cpufeature.c

arm64: cpufeature: Schedule enable() calls instead of calling them via IPI

2016-12-08 07:15:24 +01:00

cpuidle.c

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cpuinfo.c

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debug-monitors.c

arm64: debug: avoid resetting stepping state machine when TIF_SINGLESTEP

2016-10-07 15:23:42 +02:00

efi-entry.S

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efi.c

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entry32.S

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entry-fpsimd.S

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entry-ftrace.S

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entry.S

arm64: entry: improve data abort handling of tagged pointers

2017-06-14 13:16:27 +02:00

fpsimd.c

arm64: fpsimd: Prevent registers leaking across exec

2017-09-02 07:06:52 +02:00

ftrace.c

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head.S

arm64: Make sure SPsel is always set

2017-10-05 09:41:46 +02:00

hw_breakpoint.c

arm64: hw_breakpoint: fix watchpoint matching for tagged pointers

2017-06-14 13:16:27 +02:00

hyp-stub.S

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image.h

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insn.c

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io.c

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irq.c

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jump_label.c

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kgdb.c

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kuser32.S

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Makefile

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module.c

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pci.c

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perf_callchain.c

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perf_event.c

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perf_regs.c

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process.c

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psci-call.S

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psci.c

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ptrace.c

arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields

2017-01-26 08:23:49 +01:00

return_address.c

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setup.c

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signal32.c

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signal.c

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sleep.S

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smp_spin_table.c

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smp.c

arm64: Fix incorrect per-cpu usage for boot CPU

2016-08-20 18:09:16 +02:00

stacktrace.c

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suspend.c

arm64: suspend: Reconfigure PSTATE after resume from idle

2016-12-08 07:15:25 +01:00

sys32.c

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sys_compat.c

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sys.c

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time.c

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topology.c

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trace-events-emulation.h

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traps.c

arm64: ensure __dump_instr() checks addr_limit

2017-11-08 10:06:27 +01:00

vdso.c

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vmlinux.lds.S

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