There's a merged pull request on the void-packages repository

qemu{,-user-static}: fix mremap(2) errno codes
https://github.com/void-linux/void-packages/pull/12757
Description: This fixes issue #11426 and we can build `webkit2gtk` for all targets.
Would be nice if someone can confirm my results, i.e. build `qemu-user-static` and cross build `webkit2gtk` for `armv6l-musl` and/or `armv7l-musl`.

Note: the patches are shared between `qemu` and `qemu-user-static`.