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hc
2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/arch/ia64/kernel/traps.c
....@@ -85,7 +85,7 @@
8585 	if (panic_on_oops)
8686 		panic("Fatal exception");
8787 
88
-  	do_exit(SIGSEGV);
88
+	make_task_dead(SIGSEGV);
8989 	return 0;
9090 }
9191 
....@@ -100,15 +100,7 @@
100100 void
101101 __kprobes ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
102102 {
103
-	siginfo_t siginfo;
104103 	int sig, code;
105
-
106
-	/* SIGILL, SIGFPE, SIGSEGV, and SIGBUS want these field initialized: */
107
-	clear_siginfo(&siginfo);
108
-	siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
109
-	siginfo.si_imm = break_num;
110
-	siginfo.si_flags = 0;		/* clear __ISR_VALID */
111
-	siginfo.si_isr = 0;
112104 
113105 	switch (break_num) {
114106 	      case 0: /* unknown error (used by GCC for __builtin_abort()) */
....@@ -182,10 +174,9 @@
182174 			sig = SIGTRAP; code = TRAP_BRKPT;
183175 		}
184176 	}
185
-	siginfo.si_signo = sig;
186
-	siginfo.si_errno = 0;
187
-	siginfo.si_code = code;
188
-	force_sig_info(sig, &siginfo, current);
177
+	force_sig_fault(sig, code,
178
+			(void __user *) (regs->cr_iip + ia64_psr(regs)->ri),
179
+			break_num, 0 /* clear __ISR_VALID */, 0);
189180 }
190181 
191182 /*
....@@ -344,30 +335,25 @@
344335 			printk(KERN_ERR "handle_fpu_swa: fp_emulate() returned -1\n");
345336 			return -1;
346337 		} else {
347
-			struct siginfo siginfo;
348
-
349338 			/* is next instruction a trap? */
339
+			int si_code;
340
+
350341 			if (exception & 2) {
351342 				ia64_increment_ip(regs);
352343 			}
353
-			clear_siginfo(&siginfo);
354
-			siginfo.si_signo = SIGFPE;
355
-			siginfo.si_errno = 0;
356
-			siginfo.si_code = FPE_FLTUNK;	/* default code */
357
-			siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
344
+			si_code = FPE_FLTUNK;	/* default code */
358345 			if (isr & 0x11) {
359
-				siginfo.si_code = FPE_FLTINV;
346
+				si_code = FPE_FLTINV;
360347 			} else if (isr & 0x22) {
361348 				/* denormal operand gets the same si_code as underflow 
362349 				* see arch/i386/kernel/traps.c:math_error()  */
363
-				siginfo.si_code = FPE_FLTUND;
350
+				si_code = FPE_FLTUND;
364351 			} else if (isr & 0x44) {
365
-				siginfo.si_code = FPE_FLTDIV;
352
+				si_code = FPE_FLTDIV;
366353 			}
367
-			siginfo.si_isr = isr;
368
-			siginfo.si_flags = __ISR_VALID;
369
-			siginfo.si_imm = 0;
370
-			force_sig_info(SIGFPE, &siginfo, current);
354
+			force_sig_fault(SIGFPE, si_code,
355
+					(void __user *) (regs->cr_iip + ia64_psr(regs)->ri),
356
+					0, __ISR_VALID, isr);
371357 		}
372358 	} else {
373359 		if (exception == -1) {
....@@ -375,24 +361,19 @@
375361 			return -1;
376362 		} else if (exception != 0) {
377363 			/* raise exception */
378
-			struct siginfo siginfo;
364
+			int si_code;
379365 
380
-			clear_siginfo(&siginfo);
381
-			siginfo.si_signo = SIGFPE;
382
-			siginfo.si_errno = 0;
383
-			siginfo.si_code = FPE_FLTUNK;	/* default code */
384
-			siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
366
+			si_code = FPE_FLTUNK;	/* default code */
385367 			if (isr & 0x880) {
386
-				siginfo.si_code = FPE_FLTOVF;
368
+				si_code = FPE_FLTOVF;
387369 			} else if (isr & 0x1100) {
388
-				siginfo.si_code = FPE_FLTUND;
370
+				si_code = FPE_FLTUND;
389371 			} else if (isr & 0x2200) {
390
-				siginfo.si_code = FPE_FLTRES;
372
+				si_code = FPE_FLTRES;
391373 			}
392
-			siginfo.si_isr = isr;
393
-			siginfo.si_flags = __ISR_VALID;
394
-			siginfo.si_imm = 0;
395
-			force_sig_info(SIGFPE, &siginfo, current);
374
+			force_sig_fault(SIGFPE, si_code,
375
+					(void __user *) (regs->cr_iip + ia64_psr(regs)->ri),
376
+					0, __ISR_VALID, isr);
396377 		}
397378 	}
398379 	return 0;
....@@ -408,7 +389,6 @@
408389 		       struct pt_regs regs)
409390 {
410391 	struct illegal_op_return rv;
411
-	struct siginfo si;
412392 	char buf[128];
413393 
414394 #ifdef CONFIG_IA64_BRL_EMU
....@@ -426,11 +406,9 @@
426406 	if (die_if_kernel(buf, &regs, 0))
427407 		return rv;
428408 
429
-	clear_siginfo(&si);
430
-	si.si_signo = SIGILL;
431
-	si.si_code = ILL_ILLOPC;
432
-	si.si_addr = (void __user *) (regs.cr_iip + ia64_psr(&regs)->ri);
433
-	force_sig_info(SIGILL, &si, current);
409
+	force_sig_fault(SIGILL, ILL_ILLOPC,
410
+			(void __user *) (regs.cr_iip + ia64_psr(&regs)->ri),
411
+			0, 0, 0);
434412 	return rv;
435413 }
436414 
....@@ -441,7 +419,7 @@
441419 {
442420 	unsigned long code, error = isr, iip;
443421 	char buf[128];
444
-	int result, sig;
422
+	int result, sig, si_code;
445423 	static const char *reason[] = {
446424 		"IA-64 Illegal Operation fault",
447425 		"IA-64 Privileged Operation fault",
....@@ -490,7 +468,6 @@
490468 
491469 	      case 26: /* NaT Consumption */
492470 		if (user_mode(&regs)) {
493
-			struct siginfo siginfo;
494471 			void __user *addr;
495472 
496473 			if (((isr >> 4) & 0xf) == 2) {
....@@ -505,15 +482,8 @@
505482 				addr = (void __user *) (regs.cr_iip
506483 							+ ia64_psr(&regs)->ri);
507484 			}
508
-			clear_siginfo(&siginfo);
509
-			siginfo.si_signo = sig;
510
-			siginfo.si_code = code;
511
-			siginfo.si_errno = 0;
512
-			siginfo.si_addr = addr;
513
-			siginfo.si_imm = vector;
514
-			siginfo.si_flags = __ISR_VALID;
515
-			siginfo.si_isr = isr;
516
-			force_sig_info(sig, &siginfo, current);
485
+			force_sig_fault(sig, code, addr,
486
+					vector, __ISR_VALID, isr);
517487 			return;
518488 		} else if (ia64_done_with_exception(&regs))
519489 			return;
....@@ -522,17 +492,8 @@
522492 
523493 	      case 31: /* Unsupported Data Reference */
524494 		if (user_mode(&regs)) {
525
-			struct siginfo siginfo;
526
-
527
-			clear_siginfo(&siginfo);
528
-			siginfo.si_signo = SIGILL;
529
-			siginfo.si_code = ILL_ILLOPN;
530
-			siginfo.si_errno = 0;
531
-			siginfo.si_addr = (void __user *) iip;
532
-			siginfo.si_imm = vector;
533
-			siginfo.si_flags = __ISR_VALID;
534
-			siginfo.si_isr = isr;
535
-			force_sig_info(SIGILL, &siginfo, current);
495
+			force_sig_fault(SIGILL, ILL_ILLOPN, (void __user *) iip,
496
+					vector, __ISR_VALID, isr);
536497 			return;
537498 		}
538499 		sprintf(buf, "Unsupported data reference");
....@@ -541,10 +502,6 @@
541502 	      case 29: /* Debug */
542503 	      case 35: /* Taken Branch Trap */
543504 	      case 36: /* Single Step Trap */
544
-	      {
545
-		struct siginfo siginfo;
546
-
547
-		clear_siginfo(&siginfo);
548505 		if (fsys_mode(current, &regs)) {
549506 			extern char __kernel_syscall_via_break[];
550507 			/*
....@@ -568,7 +525,7 @@
568525 		switch (vector) {
569526 		      default:
570527 		      case 29:
571
-			siginfo.si_code = TRAP_HWBKPT;
528
+			si_code = TRAP_HWBKPT;
572529 #ifdef CONFIG_ITANIUM
573530 			/*
574531 			 * Erratum 10 (IFA may contain incorrect address) now has
....@@ -578,37 +535,22 @@
578535 			  ifa = regs.cr_iip;
579536 #endif
580537 			break;
581
-		      case 35: siginfo.si_code = TRAP_BRANCH; ifa = 0; break;
582
-		      case 36: siginfo.si_code = TRAP_TRACE; ifa = 0; break;
538
+		      case 35: si_code = TRAP_BRANCH; ifa = 0; break;
539
+		      case 36: si_code = TRAP_TRACE; ifa = 0; break;
583540 		}
584
-		if (notify_die(DIE_FAULT, "ia64_fault", &regs, vector, siginfo.si_code, SIGTRAP)
541
+		if (notify_die(DIE_FAULT, "ia64_fault", &regs, vector, si_code, SIGTRAP)
585542 			       	== NOTIFY_STOP)
586543 			return;
587
-		siginfo.si_signo = SIGTRAP;
588
-		siginfo.si_errno = 0;
589
-		siginfo.si_addr  = (void __user *) ifa;
590
-		siginfo.si_imm   = 0;
591
-		siginfo.si_flags = __ISR_VALID;
592
-		siginfo.si_isr   = isr;
593
-		force_sig_info(SIGTRAP, &siginfo, current);
544
+		force_sig_fault(SIGTRAP, si_code, (void __user *) ifa,
545
+				0, __ISR_VALID, isr);
594546 		return;
595
-	      }
596547 
597548 	      case 32: /* fp fault */
598549 	      case 33: /* fp trap */
599550 		result = handle_fpu_swa((vector == 32) ? 1 : 0, &regs, isr);
600551 		if ((result < 0) || (current->thread.flags & IA64_THREAD_FPEMU_SIGFPE)) {
601
-			struct siginfo siginfo;
602
-
603
-			clear_siginfo(&siginfo);
604
-			siginfo.si_signo = SIGFPE;
605
-			siginfo.si_errno = 0;
606
-			siginfo.si_code = FPE_FLTINV;
607
-			siginfo.si_addr = (void __user *) iip;
608
-			siginfo.si_flags = __ISR_VALID;
609
-			siginfo.si_isr = isr;
610
-			siginfo.si_imm = 0;
611
-			force_sig_info(SIGFPE, &siginfo, current);
552
+			force_sig_fault(SIGFPE, FPE_FLTINV, (void __user *) iip,
553
+					0, __ISR_VALID, isr);
612554 		}
613555 		return;
614556 
....@@ -634,17 +576,9 @@
634576 		} else {
635577 			/* Unimplemented Instr. Address Trap */
636578 			if (user_mode(&regs)) {
637
-				struct siginfo siginfo;
638
-
639
-				clear_siginfo(&siginfo);
640
-				siginfo.si_signo = SIGILL;
641
-				siginfo.si_code = ILL_BADIADDR;
642
-				siginfo.si_errno = 0;
643
-				siginfo.si_flags = 0;
644
-				siginfo.si_isr = 0;
645
-				siginfo.si_imm = 0;
646
-				siginfo.si_addr = (void __user *) iip;
647
-				force_sig_info(SIGILL, &siginfo, current);
579
+				force_sig_fault(SIGILL, ILL_BADIADDR,
580
+						(void __user *) iip,
581
+						0, 0, 0);
648582 				return;
649583 			}
650584 			sprintf(buf, "Unimplemented Instruction Address fault");
....@@ -655,14 +589,14 @@
655589 		printk(KERN_ERR "Unexpected IA-32 exception (Trap 45)\n");
656590 		printk(KERN_ERR "  iip - 0x%lx, ifa - 0x%lx, isr - 0x%lx\n",
657591 		       iip, ifa, isr);
658
-		force_sig(SIGSEGV, current);
592
+		force_sig(SIGSEGV);
659593 		return;
660594 
661595 	      case 46:
662596 		printk(KERN_ERR "Unexpected IA-32 intercept trap (Trap 46)\n");
663597 		printk(KERN_ERR "  iip - 0x%lx, ifa - 0x%lx, isr - 0x%lx, iim - 0x%lx\n",
664598 		       iip, ifa, isr, iim);
665
-		force_sig(SIGSEGV, current);
599
+		force_sig(SIGSEGV);
666600 		return;
667601 
668602 	      case 47:
....@@ -674,5 +608,5 @@
674608 		break;
675609 	}
676610 	if (!die_if_kernel(buf, &regs, error))
677
-		force_sig(SIGILL, current);
611
+		force_sig(SIGILL);
678612 }