3 ms·

None of the kernel data structures are saved or even visible to the process - the kernel memory (on Linux x64 everything mapped in the upper 128TiB) is not read

by sedachv 10y ago

None of the kernel data structures are saved or even visible to the process - the kernel memory (on Linux x64 everything mapped in the upper 128TiB) is not readable by the process. You can have a problem if the kernel system call interface changes, but that is a problem for every executable. You would need to re-compile everything on the system.

int_19h 10y ago
Are all heap-related structures be stored in kernel memory, though? There's nothing in userspace for bookkeeping?
- sedachv 10y ago
  The kernel just gives you pointers and sizes via mmap/sbrk, it is up to you to keep track of them.