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Fix out-of-bounds access in AVX register handling on some CPUs #4049

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lwintermelon wants to merge 1 commit into from
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Fix out-of-bounds access in AVX register handling on some CPUs #4049

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4 changes: 4 additions & 0 deletions src/ExtraRegisters.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,10 @@ struct RegisterDescriptor {
}

bool describes_register(GdbServerRegister gdb_register) const {
const auto& layout = xsave_native_layout();
if (!(layout.supported_feature_bits & (1ULL << feature))) {
return false;
}
// compare end first because we search table linerarly.
return gdb_register <= end_inclusive && gdb_register >= base;
}
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