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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-07-22 12:48:34 +0100
committerMark Rutland <mark.rutland@arm.com>2017-08-08 16:28:26 +0100
commitc7365330753c55a061db0a1837a27fd5e44b1408 (patch)
tree496297bba1f31b647063b6d2c2440eebe4884521 /arch/arm64/include/asm/traps.h
parentarm64: unwind: avoid percpu indirection for irq stack (diff)
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arm64: unwind: disregard frame.sp when validating frame pointer
Currently, when unwinding the call stack, we validate the frame pointer of each frame against frame.sp, whose value is not clearly defined, and which makes it more difficult to link stack frames together across different stacks. It is far better to simply check whether the frame pointer itself points into a valid stack. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Will Deacon <will.deacon@arm.com>
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