== baseline (verbatim kernel arithmetic, crafted EDID params) ==
crafted EDID decodes to: 1912x1195@60  M=0 2C=200 K=128 2J=200
Floating point exception (core dumped)
baseline exit=136 (136 = 128+SIGFPE, integer divide trap)
== determinism ==
Floating point exception (core dumped)
run1 exit=136
Floating point exception (core dumped)
run2 exit=136
Floating point exception (core dumped)
run3 exit=136
== fix test (guard applied) ==
crafted EDID decodes to: 1912x1195@60  M=0 2C=200 K=128 2J=200
returned NULL (rejected bogus GTF2 params) -> fix OK (no trap)
fix exit=0