diff options
Diffstat (limited to 'sys/kern/subr_uio.c')
| -rw-r--r-- | sys/kern/subr_uio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/subr_uio.c b/sys/kern/subr_uio.c index 8304aea..d8fa68f 100644 --- a/sys/kern/subr_uio.c +++ b/sys/kern/subr_uio.c @@ -498,6 +498,9 @@ copyout_unmap(struct thread *td, vm_offset_t addr, size_t sz) vm_map_t map; vm_size_t size; + if (sz == 0) + return (0); + map = &td->td_proc->p_vmspace->vm_map; size = (vm_size_t) round_page(sz); |
