How programs get run: ELF binaries [LWN.net]

How programs get run: ELF binaries

Posted Feb 12, 2015 17:20 UTC (Thu) by drysdale (guest, #95971)
In reply to: How programs get run: ELF binaries by nye
Parent article: How programs get run: ELF binaries

That behaviour does need to be explicitly enabled via the personality() syscall; of the pre-defined personality values, only PER_SRV4 and PER_UW7 set the MMAP_PAGE_ZERO bit that controls this behaviour. (The bit is also explicitly cleared when running a setuid/setgid binary.)