kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/arch/x86/um/signal.c
..
..
@@ -367,7 +367,7 @@
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367
 	/* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */
368
368
 	stack_top = ((stack_top + 4) & -16UL) - 4;
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369
 	frame = (struct sigframe __user *) stack_top - 1;
370
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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 		return 1;
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372
 
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 	restorer = frame->retcode;
..
..
@@ -412,7 +412,7 @@
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412
 
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413
 	stack_top &= -8UL;
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414
 	frame = (struct rt_sigframe __user *) stack_top - 1;
415
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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416
 		return 1;
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417
 
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418
 	restorer = frame->retcode;
..
..
@@ -471,7 +471,7 @@
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471
 	return PT_REGS_SYSCALL_RET(&current->thread.regs);
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472
 
473
473
  segfault:
474
-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
475
475
 	return 0;
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476
 }
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477
 
..
..
@@ -497,7 +497,7 @@
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497
 	/* Subtract 128 for a red zone and 8 for proper alignment */
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498
 	frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128 - 8);
499
499
 
500
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
500
+	if (!access_ok(frame, sizeof(*frame)))
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501
 		goto out;
502
502
 
503
503
 	if (ksig->ka.sa.sa_flags & SA_SIGINFO) {
..
..
@@ -577,6 +577,6 @@
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577
 	return PT_REGS_SYSCALL_RET(&current->thread.regs);
578
578
 
579
579
  segfault:
580
-	force_sig(SIGSEGV, current);
580
+	force_sig(SIGSEGV);
581
581
 	return 0;
582
582
 }