audio issues in CopperheadOS Nougat due to seccomp policy violation

[thestinger]

Our OpenBSD malloc port uses mremap to replace mquery + mmap in OpenBSD, and mremap isn't on the system call whitelists since jemalloc doesn't use it.

[thestinger]

This has been fixed by disabling the mremap code in OpenBSD malloc for the time being. We'll consider approaching it differently, but we're fine with doing this. It only used mremap with flags set to 0 anyway, to match the existing OpenBSD malloc behavior. That isn't particularly useful, as it's MREMAP_MAYMOVE which offers the really useful functionality: moving very large allocations without copying the data, by copying only the page tables.

[thestinger]

This has been fixed by disabling the mremap code in OpenBSD malloc for the time being. We'll consider approaching it differently, but we're fine with doing this. It only used mremap with flags set to 0 anyway, to match the existing OpenBSD malloc behavior. That isn't particularly useful, as it's MREMAP_MAYMOVE which offers the really useful functionality: moving very large allocations without copying the data, by copying only the page tables.