On 6/5/20 7:11 AM, Alex Bennée wrote: > @@ -467,7 +467,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int > prot, > * It can fail only on 64-bit host with 32-bit target. > * On any other target/host host mmap() handles this error correctly. > */ > - if (!guest_range_valid(start, len)) { > + if (end < start || !guest_range_valid(start, len)) { > errno = ENOMEM; > goto fail; > }
Interesting. I was adjusting guest_range_valid tagged pointers yesterday, and thought that it looked buggy. r~