Author: mmacy
Date: Sat May 19 04:09:58 2018
New Revision: 333842
URL: https://svnweb.freebsd.org/changeset/base/333842
Log:
physio: avoid uninitialized variables
Modified:
head/sys/kern/kern_physio.c
Modified: head/sys/kern/kern_physio.c
==============================================================================
--- head/sys/kern/kern_physio.c Sat May 19 04:08:11 2018 (r333841)
+++ head/sys/kern/kern_physio.c Sat May 19 04:09:58 2018 (r333842)
@@ -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;
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