Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
On Thu, Aug 22, 2019 at 10:58:02AM +0200, Philippe Mathieu-Daudé wrote: > Hi Raphael, Stefan, > > On 6/14/19 11:18 AM, Stefan Hajnoczi wrote: > > On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: > >> Of the 3 virtqueues, seabios only sets cmd, leaving ctrl > >> and event without a physical address. This can cause > >> vhost_verify_ring_part_mapping to return ENOMEM, causing > >> the following logs: > >> > >> qemu-system-x86_64: Unable to map available ring for ring 0 > >> qemu-system-x86_64: Verify ring failure on region 0 > >> > >> The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 > >> has already resolved the issue for vhost scsi devices but > >> the fix was never applied to vhost-user scsi devices. > >> > >> Signed-off-by: Raphael Norwitz > >> --- > >> hw/scsi/vhost-user-scsi.c | 2 +- > >> 1 file changed, 1 insertion(+), 1 deletion(-) > > > > Reviewed-by: Stefan Hajnoczi > > > > What about backends/vhost-user.c and hw/block/vhost-user-blk.c? > It is clearly an issue for hw/block/vhost-user-blk.c The code is very similar. backends/vhost-user.c also fails to zero out the vqs. I will send the patches.
Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
On Wed, Aug 21, 2019 at 09:07:25PM -0700, Raphael Norwitz wrote: > On Fri, Jun 14, 2019 at 10:18:41AM +0100, Stefan Hajnoczi wrote: > > On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: > > > Of the 3 virtqueues, seabios only sets cmd, leaving ctrl > > > and event without a physical address. This can cause > > > vhost_verify_ring_part_mapping to return ENOMEM, causing > > > the following logs: > > > > > > qemu-system-x86_64: Unable to map available ring for ring 0 > > > qemu-system-x86_64: Verify ring failure on region 0 > > > > > > The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 > > > has already resolved the issue for vhost scsi devices but > > > the fix was never applied to vhost-user scsi devices. > > > > > > Signed-off-by: Raphael Norwitz > > > --- > > > hw/scsi/vhost-user-scsi.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > Reviewed-by: Stefan Hajnoczi > > Ping on this. Any reason it has not been merged? I think Paolo is away on vacation. I will send it through my tree instead. Stefan signature.asc Description: PGP signature
Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
Hi Raphael, Stefan, On 6/14/19 11:18 AM, Stefan Hajnoczi wrote: > On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: >> Of the 3 virtqueues, seabios only sets cmd, leaving ctrl >> and event without a physical address. This can cause >> vhost_verify_ring_part_mapping to return ENOMEM, causing >> the following logs: >> >> qemu-system-x86_64: Unable to map available ring for ring 0 >> qemu-system-x86_64: Verify ring failure on region 0 >> >> The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 >> has already resolved the issue for vhost scsi devices but >> the fix was never applied to vhost-user scsi devices. >> >> Signed-off-by: Raphael Norwitz >> --- >> hw/scsi/vhost-user-scsi.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) > > Reviewed-by: Stefan Hajnoczi > What about backends/vhost-user.c and hw/block/vhost-user-blk.c? signature.asc Description: OpenPGP digital signature
Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
On 22/08/19 06:07, Raphael Norwitz wrote: > On Fri, Jun 14, 2019 at 10:18:41AM +0100, Stefan Hajnoczi wrote: >> On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: >>> Of the 3 virtqueues, seabios only sets cmd, leaving ctrl >>> and event without a physical address. This can cause >>> vhost_verify_ring_part_mapping to return ENOMEM, causing >>> the following logs: >>> >>> qemu-system-x86_64: Unable to map available ring for ring 0 >>> qemu-system-x86_64: Verify ring failure on region 0 >>> >>> The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 >>> has already resolved the issue for vhost scsi devices but >>> the fix was never applied to vhost-user scsi devices. >>> >>> Signed-off-by: Raphael Norwitz >>> --- >>> hw/scsi/vhost-user-scsi.c | 2 +- >>> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> Reviewed-by: Stefan Hajnoczi > > Ping on this. Any reason it has not been merged? I had missed it. I have now queued it (but I won't send another pull request until approx. the middle of September). Paolo
Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
On Fri, Jun 14, 2019 at 10:18:41AM +0100, Stefan Hajnoczi wrote: > On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: > > Of the 3 virtqueues, seabios only sets cmd, leaving ctrl > > and event without a physical address. This can cause > > vhost_verify_ring_part_mapping to return ENOMEM, causing > > the following logs: > > > > qemu-system-x86_64: Unable to map available ring for ring 0 > > qemu-system-x86_64: Verify ring failure on region 0 > > > > The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 > > has already resolved the issue for vhost scsi devices but > > the fix was never applied to vhost-user scsi devices. > > > > Signed-off-by: Raphael Norwitz > > --- > > hw/scsi/vhost-user-scsi.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > Reviewed-by: Stefan Hajnoczi Ping on this. Any reason it has not been merged?
Re: [Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
On Tue, Jun 11, 2019 at 05:35:17PM -0700, Raphael Norwitz wrote: > Of the 3 virtqueues, seabios only sets cmd, leaving ctrl > and event without a physical address. This can cause > vhost_verify_ring_part_mapping to return ENOMEM, causing > the following logs: > > qemu-system-x86_64: Unable to map available ring for ring 0 > qemu-system-x86_64: Verify ring failure on region 0 > > The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 > has already resolved the issue for vhost scsi devices but > the fix was never applied to vhost-user scsi devices. > > Signed-off-by: Raphael Norwitz > --- > hw/scsi/vhost-user-scsi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Reviewed-by: Stefan Hajnoczi signature.asc Description: PGP signature
[Qemu-devel] [PATCH] vhost-user-scsi: prevent using uninitialized vqs
Of the 3 virtqueues, seabios only sets cmd, leaving ctrl and event without a physical address. This can cause vhost_verify_ring_part_mapping to return ENOMEM, causing the following logs: qemu-system-x86_64: Unable to map available ring for ring 0 qemu-system-x86_64: Verify ring failure on region 0 The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 has already resolved the issue for vhost scsi devices but the fix was never applied to vhost-user scsi devices. Signed-off-by: Raphael Norwitz --- hw/scsi/vhost-user-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index a9fd8ea..e4aae95 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -91,7 +91,7 @@ static void vhost_user_scsi_realize(DeviceState *dev, Error **errp) } vsc->dev.nvqs = 2 + vs->conf.num_queues; -vsc->dev.vqs = g_new(struct vhost_virtqueue, vsc->dev.nvqs); +vsc->dev.vqs = g_new0(struct vhost_virtqueue, vsc->dev.nvqs); vsc->dev.vq_index = 0; vsc->dev.backend_features = 0; vqs = vsc->dev.vqs; -- 1.9.4
