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845fb846c7
The stktable_data union is made of types of varying sizes, and depending on which types are stored in a table, some offsets might not necessarily be aligned. This results in a bus error for certain regtests (e.g. lb-services) on MIPS64. This bug may impact MIPS64, SPARC64, armv7 when accessing a 64-bit counter (e.g. bytes) and depending on how the compiler emitted the operation, and cause a trap that's emulated by the OS on RISCV (heavy cost). x86_64 and armv8 are not affected at all. Let's properly mark the struct with __attribute__((packed)) so that the compiler emits the suitable unaligned-compatible instructions when accessing the fields. This should be backported to all versions where it applies. |
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