diff options
| -rw-r--r-- | kexec/arch/ppc64/fs2dt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kexec/arch/ppc64/fs2dt.c b/kexec/arch/ppc64/fs2dt.c index 30b785f..a48cf23 100644 --- a/kexec/arch/ppc64/fs2dt.c +++ b/kexec/arch/ppc64/fs2dt.c @@ -111,7 +111,7 @@ static unsigned propnum(const char *name) static void add_usable_mem_property(int fd, int len) { char fname[MAXPATH], *bname; - char buf[MAXBYTES +1]; + unsigned long long buf[2]; unsigned long ranges[2*MAX_MEMORY_RANGES]; unsigned long long base, end, loc_base, loc_end; int range, rlen = 0; @@ -123,6 +123,10 @@ static void add_usable_mem_property(int fd, int len) if (strncmp(bname, "/memory@", 8)) return; + if (len < 2 * sizeof(unsigned long long)) + die("unrecoverable error: not enough data for mem property\n"); + len = 2 * sizeof(unsigned long long); + if (lseek(fd, 0, SEEK_SET) < 0) die("unrecoverable error: error seeking in \"%s\": %s\n", pathname, strerror(errno)); |