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zero inputs to vm_page_initfake() for predictable results

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Reviewed by:	kib
Submitted by:	Anton Rang <rang at acm.org>
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D20162
This commit is contained in:
Tycho Nightingale 2019-05-06 00:57:05 +00:00
parent 2154a866b6
commit 8d2a55ca67
2 changed files with 4 additions and 3 deletions
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3
sys/dev/nvdimm/nvdimm_spa.c
View File

@ -177,6 +177,7 @@ nvdimm_spa_uio(struct nvdimm_spa_dev *dev, struct uio *uio)
error = 0;
if (dev->spa_kva == NULL) {
mattr = nvdimm_spa_memattr(dev);
bzero(&m, sizeof(m));
vm_page_initfake(&m, 0, mattr);
ma = &m;
while (uio->uio_resid > 0) {
@ -276,7 +277,7 @@ nvdimm_spa_g_all_unmapped(struct nvdimm_spa_dev *dev, struct bio *bp, int rw)
mattr = nvdimm_spa_memattr(dev);
for (i = 0; i < nitems(ma); i++) {
maa[i].flags = 0;
bzero(&maa[i], sizeof(maa[i]));
vm_page_initfake(&maa[i], dev->spa_phys_base +
trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr);
ma[i] = &maa[i];

4
sys/x86/iommu/busdma_dmar.c
View File

@ -689,7 +689,7 @@ dmar_bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map1,
*/
if (fma == NULL) {
fma = malloc(sizeof(struct vm_page) * ma_cnt,
M_DEVBUF, mflags);
M_DEVBUF, M_ZERO | mflags);
if (fma == NULL) {
free(ma, M_DEVBUF);
return (ENOMEM);
@ -743,7 +743,7 @@ dmar_bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map1, void *buf,
*/
if (fma == NULL) {
fma = malloc(sizeof(struct vm_page) * ma_cnt,
M_DEVBUF, mflags);
M_DEVBUF, M_ZERO | mflags);
if (fma == NULL) {
free(ma, M_DEVBUF);
return (ENOMEM);