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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/arch/sh/kernel/sys_sh.c
..
..
@@ -69,10 +69,10 @@
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 	if (addr + len < addr)
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 		return -EFAULT;
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-	down_read(&current->mm->mmap_sem);
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+	mmap_read_lock(current->mm);
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 	vma = find_vma (current->mm, addr);
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 	if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) {
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-		up_read(&current->mm->mmap_sem);
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+		mmap_read_unlock(current->mm);
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 		return -EFAULT;
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 	}
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..
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@@ -91,6 +91,6 @@
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 	if (op & CACHEFLUSH_I)
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 		flush_icache_range(addr, addr+len);
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-	up_read(&current->mm->mmap_sem);
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+	mmap_read_unlock(current->mm);
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 	return 0;
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 }