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virtio_scsi: Zero stack-allocated CCBs

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Fixes:	3394d4239b ("cam: allocate CCBs from UMA for SCSI and ATA IO")
Reported by:	syzbot+2e9ce63919709feb3d1c@syzkaller.appspotmail.com
Reviewed by:	trasz
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mark Johnston 2021-05-16 22:14:41 -04:00
parent 9a2fac6ba6
commit 5b81e2e1bc
1 changed files with 2 additions and 0 deletions
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2
sys/dev/virtio/scsi/virtio_scsi.c
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@ -700,6 +700,7 @@ vtscsi_register_async(struct vtscsi_softc *sc)
{
struct ccb_setasync csa;
memset(&csa, 0, sizeof(csa));
xpt_setup_ccb(&csa.ccb_h, sc->vtscsi_path, 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_LOST_DEVICE | AC_FOUND_DEVICE;
@ -716,6 +717,7 @@ vtscsi_deregister_async(struct vtscsi_softc *sc)
{
struct ccb_setasync csa;
memset(&csa, 0, sizeof(csa));
xpt_setup_ccb(&csa.ccb_h, sc->vtscsi_path, 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = 0;