diff options
Diffstat (limited to 'sys/kern/sys_pipe.c')
| -rw-r--r-- | sys/kern/sys_pipe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/sys_pipe.c b/sys/kern/sys_pipe.c index ed48e54..f4adfcb 100644 --- a/sys/kern/sys_pipe.c +++ b/sys/kern/sys_pipe.c @@ -759,6 +759,8 @@ pipe_build_write_buffer(wpipe, uio) pmap = vmspace_pmap(curproc->p_vmspace); endaddr = round_page((vm_offset_t)uio->uio_iov->iov_base + size); addr = trunc_page((vm_offset_t)uio->uio_iov->iov_base); + if (endaddr < addr) + return (EFAULT); for (i = 0; addr < endaddr; addr += PAGE_SIZE, i++) { /* * vm_fault_quick() can sleep. Consequently, |
