On Mon, Jun 07, 2021 at 11:47:57AM +0200, Klaus Jensen wrote: > From: Klaus Jensen <k.jen...@samsung.com> > > Qiang Liu reported that an access on an unknown address is triggered in > memory_region_set_enabled because a check on CAP.PMRS is missing for the > PMRCTL register write when no PMR is configured. > > Cc: qemu-sta...@nongnu.org > Fixes: 75c3c9de961d ("hw/block/nvme: disable PMR at boot up") > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/362 > Signed-off-by: Klaus Jensen <k.jen...@samsung.com>
Looks good. Reviewed-by: Keith Busch <kbu...@kernel.org> > --- > hw/nvme/ctrl.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c > index 0bcaf7192f99..463772602c4e 100644 > --- a/hw/nvme/ctrl.c > +++ b/hw/nvme/ctrl.c > @@ -5583,6 +5583,10 @@ static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, > uint64_t data, > "invalid write to PMRCAP register, ignored"); > return; > case 0xe04: /* PMRCTL */ > + if (!NVME_CAP_PMRS(n->bar.cap)) { > + return; > + } > + > n->bar.pmrctl = data; > if (NVME_PMRCTL_EN(data)) { > memory_region_set_enabled(&n->pmr.dev->mr, true); > -- > 2.31.1