• Mark Rutland's avatar
    arm64: Use larger stacks when KASAN is selected · b02faed1
    Mark Rutland authored
    
    
    AddressSanitizer instrumentation can significantly bloat the stack, and
    with GCC 7 this can result in stack overflows at boot time in some
    configurations.
    
    We can avoid this by doubling our stack size when KASAN is in use, as is
    already done on x86 (and has been since KASAN was introduced).
    Regardless of other patches to decrease KASAN's stack utilization,
    kernels built with KASAN will always require more stack space than those
    built without, and we should take this into account.
    Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
    Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
    b02faed1