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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sat, 25 Feb 2012 01:33:39 +0000 (UTC)
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Subject: svn commit: r232143 - head/sys/i386/linux
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Author: kib
Date: Sat Feb 25 01:33:39 2012
New Revision: 232143
URL: http://svn.freebsd.org/changeset/base/232143

Log:
  Do not write to the user address directly, use suword().
  
  Reported by:	Bengt Ahlgren <bengta sics se>
  MFC after:	1 week

Modified:
  head/sys/i386/linux/linux_sysvec.c

Modified: head/sys/i386/linux/linux_sysvec.c
==============================================================================
--- head/sys/i386/linux/linux_sysvec.c	Sat Feb 25 01:20:53 2012	(r232142)
+++ head/sys/i386/linux/linux_sysvec.c	Sat Feb 25 01:33:39 2012	(r232143)
@@ -227,11 +227,11 @@ linux_fixup(register_t **stack_base, str
 	argv = *stack_base;
 	envp = *stack_base + (imgp->args->argc + 1);
 	(*stack_base)--;
-	**stack_base = (intptr_t)(void *)envp;
+	suword(*stack_base, (intptr_t)(void *)envp);
 	(*stack_base)--;
-	**stack_base = (intptr_t)(void *)argv;
+	suword(*stack_base, (intptr_t)(void *)argv);
 	(*stack_base)--;
-	**stack_base = imgp->args->argc;
+	suword(*stack_base, imgp->args->argc);
 	return (0);
 }
 
@@ -286,7 +286,7 @@ elf_linux_fixup(register_t **stack_base,
 	imgp->auxargs = NULL;
 
 	(*stack_base)--;
-	**stack_base = (register_t)imgp->args->argc;
+	suword(*stack_base, (register_t)imgp->args->argc);
 	return (0);
 }