devmem2 also crashes with a SIGBUS when it's requested to access unaligned memory on machines that forbid it. For example, on sparc: blackhole ok % sudo ./devmem 0x70000000 w /dev/mem opened. Memory mapped at address 0xf7fec000. Value at address 0x70000000 (0xf7fec000): 0x82106120 blackhole ok % sudo ./devmem 0x70000001 w /dev/mem opened. Memory mapped at address 0xf7fc0000. zsh: bus error sudo ./devmem 0x70000001 w This should not be allowed to occur. devmem2 should either forbid unaligned access where the processor forbids it (and that means on alpha, ia64, and other architectures where PR_SET_UNALIGN is implemented, unless it's disabled) or perform a fix-up like the kernel does in such situations. -- brian m. carlson / brian with sandals: Houston, Texas, US +1 832 623 2791 | http://www.crustytoothpaste.net/~bmc | My opinion only OpenPGP: RSA v4 4096b: 88AC E9B2 9196 305B A994 7552 F1BA 225C 0223 B187
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