diff options
| -rw-r--r-- | sys/src/9/port/fault.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/9/port/fault.c b/sys/src/9/port/fault.c index 00c905b8c..64832d23f 100644 --- a/sys/src/9/port/fault.c +++ b/sys/src/9/port/fault.c @@ -301,7 +301,7 @@ okaddr(uintptr addr, ulong len, int write) { Segment *s; - if((long)len >= 0) { + if((long)len >= 0 && addr+len >= addr) { for(;;) { s = seg(up, addr, 0); if(s == nil || (write && (s->type&SG_RONLY))) |