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@@ -405,6 +405,9 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type,
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BUG_ON(old_type == new_type);
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+ if (size > (ULLONG_MAX - start))
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+ size = ULLONG_MAX - start;
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+
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for (i = 0; i < e820.nr_map; i++) {
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struct e820entry *ei = &e820.map[i];
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u64 final_start, final_end;
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@@ -441,6 +444,9 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type,
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int i;
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u64 real_removed_size = 0;
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+ if (size > (ULLONG_MAX - start))
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+ size = ULLONG_MAX - start;
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+
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for (i = 0; i < e820.nr_map; i++) {
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struct e820entry *ei = &e820.map[i];
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u64 final_start, final_end;
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