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    SubjectRe: Undefined Instruction
    On Wed, 2 Nov 2011, Xin Tong wrote:

    > If an application contains an undefined instruction to the processor (
    > x86 in particular ) how does the operating system handle it. does the
    > operating system just kill the process, or it will throw signals,
    > trying to recover from it ?

    CPU will trap and kernel will send SIGILL to the process.

    --
    Jiri Kosina
    SUSE Labs



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