ARM: 6252/1: Use SIGBUS for unaligned access instead of SIGILL

POSIX specify to use signal SIGBUS with code BUS_ADRALN for invalid address alignment. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
git-mirror · Jul 27, 2010 · 3dc91af · 3dc91af
1 parent c1ba6ba
commit 3dc91af
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
@@ -924,8 +924,8 @@ static int __init alignment_init(void)
 		ai_usermode = UM_FIXUP;
 	}
 
-	hook_fault_code(1, do_alignment, SIGILL, "alignment exception");
-	hook_fault_code(3, do_alignment, SIGILL, "alignment exception");
+	hook_fault_code(1, do_alignment, SIGBUS, "alignment exception");
+	hook_fault_code(3, do_alignment, SIGBUS, "alignment exception");
 
 	return 0;
 }

diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
@@ -463,9 +463,9 @@ static struct fsr_info {
 	 * defines these to be "precise" aborts.
 	 */
 	{ do_bad,		SIGSEGV, 0,		"vector exception"		   },
-	{ do_bad,		SIGILL,	 BUS_ADRALN,	"alignment exception"		   },
+	{ do_bad,		SIGBUS,	 BUS_ADRALN,	"alignment exception"		   },
 	{ do_bad,		SIGKILL, 0,		"terminal exception"		   },
-	{ do_bad,		SIGILL,	 BUS_ADRALN,	"alignment exception"		   },
+	{ do_bad,		SIGBUS,	 BUS_ADRALN,	"alignment exception"		   },
 /* Do we need runtime check ? */
 #if __LINUX_ARM_ARCH__ < 6
 	{ do_bad,		SIGBUS,	 0,		"external abort on linefetch"	   },