diff options
| author | Ard Biesheuvel <[email protected]> | 2014-10-29 17:09:32 +0100 |
|---|---|---|
| committer | Grant Likely <[email protected]> | 2014-11-04 16:43:10 +0000 |
| commit | 8cccffc52694938fc88f3d90bc7fed8460e27191 (patch) | |
| tree | 76ea435917e5cfd97859a813103a3aaa52ae5124 /scripts | |
| parent | 50ba08f301a1b0310775deeed00c9b24ba75fe8a (diff) | |
of: check for size < 0 after rounding in early_init_dt_add_memory_arch
Memory regions passed to early_init_dt_add_memory_arch() are rounded to
PAGE_SIZE by subtracting the size of the leading fractional page from
the 'size' argument. However, size being a u64 type, if its value is
sufficiently small, the subtraction wraps around and produces a bogus
value, potentially leading to crashes.
Fix this by ignoring the memory range in such cases.
Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions