diff options
| author | Colin Percival <cperciva@FreeBSD.org> | 2009-06-10 10:31:11 +0000 |
|---|---|---|
| committer | Colin Percival <cperciva@FreeBSD.org> | 2009-06-10 10:31:11 +0000 |
| commit | 9a1bde1808c46ddbf781de3cfe4ab990079aa151 (patch) | |
| tree | 5b29aae21aa521fce02ec60561dcdae1bcd23364 /sys/kern/sys_pipe.c | |
| parent | 673753c2153a2ec7a9000c3f7f6c198f6ca23ba2 (diff) | |
Notes
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 ed48e544bcb5..f4adfcb23b8f 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, |