svn commit: r354341 - head/sys/arm64/linux

[Ed Maste]

Author: emaste
Date: Mon Nov  4 21:23:30 2019
New Revision: 354341
URL: https://svnweb.freebsd.org/changeset/base/354341

Log:
  arm64 linuxulator: default to RW stack (no X)
  
  This matches Linux's default arm64 data / stack permissions.
  
  MFC after:	1 week
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/arm64/linux/linux_sysvec.c

Modified: head/sys/arm64/linux/linux_sysvec.c
==============================================================================
--- head/sys/arm64/linux/linux_sysvec.c	Mon Nov  4 21:06:06 2019	(r354340)
+++ head/sys/arm64/linux/linux_sysvec.c	Mon Nov  4 21:23:30 2019	(r354341)
@@ -371,7 +371,7 @@ struct sysentvec elf_linux_sysvec = {
 	.sv_maxuser	= VM_MAXUSER_ADDRESS,
 	.sv_usrstack	= USRSTACK,
 	.sv_psstrings	= PS_STRINGS, /* XXX */
-	.sv_stackprot	= VM_PROT_ALL, /* XXX */
+	.sv_stackprot	= VM_PROT_READ | VM_PROT_WRITE,
 	.sv_copyout_strings = linux_copyout_strings,
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= NULL,