enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

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