As reported in Bug 440180, the s390x disassembler could run into an
assertion failure due to the maximum mnemonic length being exceeded. This
was fixed with commit
67a2bb759a7c9c76fd6aa142bdb6fe342a5998e2.
392146 aarch64: unhandled instruction 0xD5380001 (MRS rT, midr_el1)
412377 SIGILL on cache flushes on arm64
417572 vex amd64->IR: unhandled instruction bytes: 0xC5 0x79 0xD6 0xED 0xC5
+440180 s390x: Failed assertion in disassembler
444781 MIPS: wrong syscall numbers used
447989 Support Armv8.2 SHA-512 instructions
453044 gbserver_tests failures in aarch64