diff options
| author | Matt Macy <mmacy@FreeBSD.org> | 2018-05-19 04:09:58 +0000 |
|---|---|---|
| committer | Matt Macy <mmacy@FreeBSD.org> | 2018-05-19 04:09:58 +0000 |
| commit | cd6ba3f086b44b8d441bf950924fcf6f7b25ecb1 (patch) | |
| tree | a11355c2240120ea45d428cc1e9393b816aa101c /sys | |
| parent | e9b1074bc79b8edbef06ad004f128ef81a22a2c1 (diff) | |
Notes
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/kern_physio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/kern/kern_physio.c b/sys/kern/kern_physio.c index b71951c162bd..b049b8d17fac 100644 --- a/sys/kern/kern_physio.c +++ b/sys/kern/kern_physio.c @@ -51,6 +51,8 @@ physio(struct cdev *dev, struct uio *uio, int ioflag) vm_prot_t prot; csw = dev->si_devsw; + npages = 0; + sa = NULL; /* check if character device is being destroyed */ if (csw == NULL) return (ENXIO); @@ -177,7 +179,7 @@ physio(struct cdev *dev, struct uio *uio, int ioflag) error = EFAULT; goto doerror; } - if (pbuf) { + if (pbuf && sa) { pmap_qenter((vm_offset_t)sa, pages, npages); bp->bio_data = sa + poff; |