diff options
| -rw-r--r-- | kexec/arch/ppc64/fs2dt.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kexec/arch/ppc64/fs2dt.c b/kexec/arch/ppc64/fs2dt.c index a48cf23..7c07e19 100644 --- a/kexec/arch/ppc64/fs2dt.c +++ b/kexec/arch/ppc64/fs2dt.c @@ -134,8 +134,10 @@ static void add_usable_mem_property(int fd, int len) die("unrecoverable error: error reading \"%s\": %s\n", pathname, strerror(errno)); - base = ((unsigned long long *)buf)[0]; - end = base + ((unsigned long long *)buf)[1]; + if (~0ULL - buf[0] < buf[1]) + die("unrecoverable error: mem property overflow\n"); + base = buf[0]; + end = base + buf[1]; for (range = 0; range < usablemem_rgns.size; range++) { loc_base = usablemem_rgns.ranges[range].start; |