diff options
| -rw-r--r-- | arch/x86/kernel/e820.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 15b4393ff9bf..1b76b25b4d9a 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -405,6 +405,9 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type, BUG_ON(old_type == new_type); + if (size > (ULLONG_MAX - start)) + size = ULLONG_MAX - start; + for (i = 0; i < e820.nr_map; i++) { struct e820entry *ei = &e820.map[i]; u64 final_start, final_end; @@ -441,6 +444,9 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, int i; u64 real_removed_size = 0; + if (size > (ULLONG_MAX - start)) + size = ULLONG_MAX - start; + for (i = 0; i < e820.nr_map; i++) { struct e820entry *ei = &e820.map[i]; u64 final_start, final_end; |