Merge branch 'parisc-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 - revert an access_ok() patch which broke 32bit userspace on 64bit
   kernels
 - avoid a gcc miscompilation in two internal pa_memcpy() functions by
   not inlining those
 - do not export the definition of SOCK_NONBLOCK via uapi header (fixes
   build of audit package)
 - depending on the fault type we now correctly report either SIGBUS or
   SIGSEGV
 - a small fix to not compare a size_t variable for < 0

* 'parisc-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: size_t is unsigned, so comparison size < 0 doesn't make sense.
  parisc: improve SIGBUS/SIGSEGV error reporting
  parisc: break out SOCK_NONBLOCK define to own asm header file
  parisc: do not inline pa_memcpy() internal functions
  Revert "parisc: implement full version of access_ok()"

1 files changed, 20 insertions, 2 deletions

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 7584a5df0fa4..9d08c71a967e 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -282,16 +282,34 @@ bad_area:
 #endif
 		switch (code) {
 		case 15:	/* Data TLB miss fault/Data page fault */
+			/* send SIGSEGV when outside of vma */
+			if (!vma ||
+			    address < vma->vm_start || address > vma->vm_end) {
+				si.si_signo = SIGSEGV;
+				si.si_code = SEGV_MAPERR;
+				break;
+			}
+
+			/* send SIGSEGV for wrong permissions */
+			if ((vma->vm_flags & acc_type) != acc_type) {
+				si.si_signo = SIGSEGV;
+				si.si_code = SEGV_ACCERR;
+				break;
+			}
+
+			/* probably address is outside of mapped file */
+			/* fall through */
 		case 17:	/* NA data TLB miss / page fault */
 		case 18:	/* Unaligned access - PCXS only */
 			si.si_signo = SIGBUS;
-			si.si_code = BUS_ADRERR;
+			si.si_code = (code == 18) ? BUS_ADRALN : BUS_ADRERR;
 			break;
 		case 16:	/* Non-access instruction TLB miss fault */
 		case 26:	/* PCXL: Data memory access rights trap */
 		default:
 			si.si_signo = SIGSEGV;
-			si.si_code = SEGV_MAPERR;
+			si.si_code = (code == 26) ? SEGV_ACCERR : SEGV_MAPERR;
+			break;
 		}
 		si.si_errno = 0;
 		si.si_addr = (void __user *) address;