update kernel to 5.10.198

hc

2024-01-03 2f7c68cb55ecb7331f2381deb497c27155f32faf

 kernel/arch/powerpc/kernel/ptrace/ptrace-view.c
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@@ -298,6 +298,9 @@
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 static int ppr_get(struct task_struct *target, const struct user_regset *regset,
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 		   struct membuf to)
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 {
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+	if (!target->thread.regs)
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+		return -EINVAL;
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+
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 	return membuf_write(&to, &target->thread.regs->ppr, sizeof(u64));
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 }
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@@ -305,6 +308,9 @@
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 		   unsigned int pos, unsigned int count, const void *kbuf,
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 		   const void __user *ubuf)
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 {
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+	if (!target->thread.regs)
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+		return -EINVAL;
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+
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 	return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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 				  &target->thread.regs->ppr, 0, sizeof(u64));
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 }