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ARM: kprobes: Reject 16-bit Thumb SVC and UNDEFINED instructions
SVC (SWI) instructions shouldn't occur in kernel code so we don't need to be able to probe them. Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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@ -464,6 +464,14 @@ const union decode_item kprobe_decode_thumb16_table[] = {
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/* LDM 1100 1xxx xxxx xxxx */
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DECODE_EMULATE (0xf000, 0xc000, t16_emulate_loregs_rwflags),
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/*
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* Conditional branch, and Supervisor Call
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*/
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/* Permanently UNDEFINED 1101 1110 xxxx xxxx */
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/* SVC 1101 1111 xxxx xxxx */
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DECODE_REJECT (0xfe00, 0xde00),
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DECODE_END
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};
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