* [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash
@ 2017-05-03 12:11 Marc-André Lureau
2017-05-03 12:11 ` [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer Marc-André Lureau
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Marc-André Lureau @ 2017-05-03 12:11 UTC (permalink / raw)
To: qemu-devel; +Cc: dgilbert, mst, Marc-André Lureau
Calling vu_queue_get_avail_bytes() when the queue doesn't yet have
addresses will result in the following crash:
Program received signal SIGSEGV, Segmentation fault.
0x000055c414112ce4 in vring_avail_idx (vq=0x55c41582fd68, vq=0x55c41582fd68)
at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940
940 vq->shadow_avail_idx = vq->vring.avail->idx;
(gdb) p vq
$1 = (VuVirtq *) 0x55c41582fd68
(gdb) p vq->vring
$2 = {num = 0, desc = 0x0, avail = 0x0, used = 0x0, log_guest_addr = 0, flags = 0}
at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940
No locals.
at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:960
num_heads = <optimized out>
out_bytes=out_bytes@entry=0x7fffd035d7c4, max_in_bytes=max_in_bytes@entry=0,
max_out_bytes=max_out_bytes@entry=0) at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1034
Check if vring.avail != null before accessing it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
contrib/libvhost-user/libvhost-user.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c
index af4faad60b..f9680b6279 100644
--- a/contrib/libvhost-user/libvhost-user.c
+++ b/contrib/libvhost-user/libvhost-user.c
@@ -1031,6 +1031,10 @@ vu_queue_get_avail_bytes(VuDev *dev, VuVirtq *vq, unsigned int *in_bytes,
idx = vq->last_avail_idx;
total_bufs = in_total = out_total = 0;
+ if (!vq->vring.avail) {
+ goto done;
+ }
+
while ((rc = virtqueue_num_heads(dev, vq, idx)) > 0) {
unsigned int max, num_bufs, indirect = 0;
struct vring_desc *desc;
--
2.12.0.191.gc5d8de91d
^ permalink raw reply related [flat|nested] 7+ messages in thread* [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer 2017-05-03 12:11 [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Marc-André Lureau @ 2017-05-03 12:11 ` Marc-André Lureau 2017-05-03 12:27 ` Philippe Mathieu-Daudé 2017-05-03 12:26 ` [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Philippe Mathieu-Daudé 2017-05-03 14:56 ` Dr. David Alan Gilbert 2 siblings, 1 reply; 7+ messages in thread From: Marc-André Lureau @ 2017-05-03 12:11 UTC (permalink / raw) To: qemu-devel; +Cc: dgilbert, mst, Marc-André Lureau Check if vring.avail != null before accessing it. Fix crashes from callers such a vu_queue_pop() when queue isn't ready. Fix documentation and return type while at it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> --- contrib/libvhost-user/libvhost-user.h | 6 +++--- contrib/libvhost-user/libvhost-user.c | 8 ++++++-- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h index 156b50e989..af02a31ebe 100644 --- a/contrib/libvhost-user/libvhost-user.h +++ b/contrib/libvhost-user/libvhost-user.h @@ -327,13 +327,13 @@ void vu_queue_set_notification(VuDev *dev, VuVirtq *vq, int enable); bool vu_queue_enabled(VuDev *dev, VuVirtq *vq); /** - * vu_queue_enabled: + * vu_queue_empty: * @dev: a VuDev context * @vq: a VuVirtq queue * - * Returns: whether the queue is empty. + * Returns: true if the queue is empty or not ready. */ -int vu_queue_empty(VuDev *dev, VuVirtq *vq); +bool vu_queue_empty(VuDev *dev, VuVirtq *vq); /** * vu_queue_notify: diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c index f9680b6279..b0f15b76e3 100644 --- a/contrib/libvhost-user/libvhost-user.c +++ b/contrib/libvhost-user/libvhost-user.c @@ -1125,11 +1125,15 @@ vu_queue_avail_bytes(VuDev *dev, VuVirtq *vq, unsigned int in_bytes, /* Fetch avail_idx from VQ memory only when we really need to know if * guest has added some buffers. */ -int +bool vu_queue_empty(VuDev *dev, VuVirtq *vq) { + if (!vq->vring.avail) { + return true; + } + if (vq->shadow_avail_idx != vq->last_avail_idx) { - return 0; + return false; } return vring_avail_idx(vq) == vq->last_avail_idx; -- 2.12.0.191.gc5d8de91d ^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer 2017-05-03 12:11 ` [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer Marc-André Lureau @ 2017-05-03 12:27 ` Philippe Mathieu-Daudé 0 siblings, 0 replies; 7+ messages in thread From: Philippe Mathieu-Daudé @ 2017-05-03 12:27 UTC (permalink / raw) To: Marc-André Lureau, qemu-devel; +Cc: dgilbert, mst On 05/03/2017 09:11 AM, Marc-André Lureau wrote: > Check if vring.avail != null before accessing it. > > Fix crashes from callers such a vu_queue_pop() when queue isn't ready. > > Fix documentation and return type while at it. > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > --- > contrib/libvhost-user/libvhost-user.h | 6 +++--- > contrib/libvhost-user/libvhost-user.c | 8 ++++++-- > 2 files changed, 9 insertions(+), 5 deletions(-) > > diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h > index 156b50e989..af02a31ebe 100644 > --- a/contrib/libvhost-user/libvhost-user.h > +++ b/contrib/libvhost-user/libvhost-user.h > @@ -327,13 +327,13 @@ void vu_queue_set_notification(VuDev *dev, VuVirtq *vq, int enable); > bool vu_queue_enabled(VuDev *dev, VuVirtq *vq); > > /** > - * vu_queue_enabled: > + * vu_queue_empty: > * @dev: a VuDev context > * @vq: a VuVirtq queue > * > - * Returns: whether the queue is empty. > + * Returns: true if the queue is empty or not ready. > */ > -int vu_queue_empty(VuDev *dev, VuVirtq *vq); > +bool vu_queue_empty(VuDev *dev, VuVirtq *vq); > > /** > * vu_queue_notify: > diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c > index f9680b6279..b0f15b76e3 100644 > --- a/contrib/libvhost-user/libvhost-user.c > +++ b/contrib/libvhost-user/libvhost-user.c > @@ -1125,11 +1125,15 @@ vu_queue_avail_bytes(VuDev *dev, VuVirtq *vq, unsigned int in_bytes, > > /* Fetch avail_idx from VQ memory only when we really need to know if > * guest has added some buffers. */ > -int > +bool > vu_queue_empty(VuDev *dev, VuVirtq *vq) > { > + if (!vq->vring.avail) { > + return true; > + } > + > if (vq->shadow_avail_idx != vq->last_avail_idx) { > - return 0; > + return false; > } > > return vring_avail_idx(vq) == vq->last_avail_idx; > ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash 2017-05-03 12:11 [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Marc-André Lureau 2017-05-03 12:11 ` [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer Marc-André Lureau @ 2017-05-03 12:26 ` Philippe Mathieu-Daudé 2017-05-03 12:32 ` Marc-André Lureau 2017-05-03 14:56 ` Dr. David Alan Gilbert 2 siblings, 1 reply; 7+ messages in thread From: Philippe Mathieu-Daudé @ 2017-05-03 12:26 UTC (permalink / raw) To: Marc-André Lureau, qemu-devel; +Cc: dgilbert, mst Hi Marc-André, On 05/03/2017 09:11 AM, Marc-André Lureau wrote: > Calling vu_queue_get_avail_bytes() when the queue doesn't yet have > addresses will result in the following crash: > > Program received signal SIGSEGV, Segmentation fault. > 0x000055c414112ce4 in vring_avail_idx (vq=0x55c41582fd68, vq=0x55c41582fd68) > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > 940 vq->shadow_avail_idx = vq->vring.avail->idx; > (gdb) p vq > $1 = (VuVirtq *) 0x55c41582fd68 > (gdb) p vq->vring > $2 = {num = 0, desc = 0x0, avail = 0x0, used = 0x0, log_guest_addr = 0, flags = 0} > > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > No locals. > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:960 > num_heads = <optimized out> > out_bytes=out_bytes@entry=0x7fffd035d7c4, max_in_bytes=max_in_bytes@entry=0, > max_out_bytes=max_out_bytes@entry=0) at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1034 > > Check if vring.avail != null before accessing it. > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > --- > contrib/libvhost-user/libvhost-user.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c > index af4faad60b..f9680b6279 100644 > --- a/contrib/libvhost-user/libvhost-user.c > +++ b/contrib/libvhost-user/libvhost-user.c > @@ -1031,6 +1031,10 @@ vu_queue_get_avail_bytes(VuDev *dev, VuVirtq *vq, unsigned int *in_bytes, > idx = vq->last_avail_idx; > > total_bufs = in_total = out_total = 0; > + if (!vq->vring.avail) { > + goto done; > + } > + > while ((rc = virtqueue_num_heads(dev, vq, idx)) > 0) { > unsigned int max, num_bufs, indirect = 0; > struct vring_desc *desc; > It seems to me safer to fix instead vring_avail_ring(), and fix neighbours vring_avail_flags() and vring_avail_idx() while here. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash 2017-05-03 12:26 ` [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Philippe Mathieu-Daudé @ 2017-05-03 12:32 ` Marc-André Lureau 2017-05-03 12:57 ` Philippe Mathieu-Daudé 0 siblings, 1 reply; 7+ messages in thread From: Marc-André Lureau @ 2017-05-03 12:32 UTC (permalink / raw) To: Philippe Mathieu-Daudé; +Cc: qemu-devel, dgilbert, mst Hi ----- Original Message ----- > Hi Marc-André, > > On 05/03/2017 09:11 AM, Marc-André Lureau wrote: > > Calling vu_queue_get_avail_bytes() when the queue doesn't yet have > > addresses will result in the following crash: > > > > Program received signal SIGSEGV, Segmentation fault. > > 0x000055c414112ce4 in vring_avail_idx (vq=0x55c41582fd68, > > vq=0x55c41582fd68) > > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > > 940 vq->shadow_avail_idx = vq->vring.avail->idx; > > (gdb) p vq > > $1 = (VuVirtq *) 0x55c41582fd68 > > (gdb) p vq->vring > > $2 = {num = 0, desc = 0x0, avail = 0x0, used = 0x0, log_guest_addr = 0, > > flags = 0} > > > > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > > No locals. > > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:960 > > num_heads = <optimized out> > > out_bytes=out_bytes@entry=0x7fffd035d7c4, > > max_in_bytes=max_in_bytes@entry=0, > > max_out_bytes=max_out_bytes@entry=0) at > > /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1034 > > > > Check if vring.avail != null before accessing it. > > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > --- > > contrib/libvhost-user/libvhost-user.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/contrib/libvhost-user/libvhost-user.c > > b/contrib/libvhost-user/libvhost-user.c > > index af4faad60b..f9680b6279 100644 > > --- a/contrib/libvhost-user/libvhost-user.c > > +++ b/contrib/libvhost-user/libvhost-user.c > > @@ -1031,6 +1031,10 @@ vu_queue_get_avail_bytes(VuDev *dev, VuVirtq *vq, > > unsigned int *in_bytes, > > idx = vq->last_avail_idx; > > > > total_bufs = in_total = out_total = 0; > > + if (!vq->vring.avail) { > > + goto done; > > + } > > + > > while ((rc = virtqueue_num_heads(dev, vq, idx)) > 0) { > > unsigned int max, num_bufs, indirect = 0; > > struct vring_desc *desc; > > > > It seems to me safer to fix instead vring_avail_ring(), and fix > neighbours vring_avail_flags() and vring_avail_idx() while here. Those are internal/static functions, possibly on hot paths. So I would rather keep the check on the external/public functions only. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash 2017-05-03 12:32 ` Marc-André Lureau @ 2017-05-03 12:57 ` Philippe Mathieu-Daudé 0 siblings, 0 replies; 7+ messages in thread From: Philippe Mathieu-Daudé @ 2017-05-03 12:57 UTC (permalink / raw) To: Marc-André Lureau; +Cc: qemu-devel, dgilbert, mst >> On 05/03/2017 09:11 AM, Marc-André Lureau wrote: >>> Calling vu_queue_get_avail_bytes() when the queue doesn't yet have >>> addresses will result in the following crash: >>> >>> Program received signal SIGSEGV, Segmentation fault. >>> 0x000055c414112ce4 in vring_avail_idx (vq=0x55c41582fd68, >>> vq=0x55c41582fd68) >>> at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 >>> 940 vq->shadow_avail_idx = vq->vring.avail->idx; >>> (gdb) p vq >>> $1 = (VuVirtq *) 0x55c41582fd68 >>> (gdb) p vq->vring >>> $2 = {num = 0, desc = 0x0, avail = 0x0, used = 0x0, log_guest_addr = 0, >>> flags = 0} >>> >>> at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 >>> No locals. >>> at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:960 >>> num_heads = <optimized out> >>> out_bytes=out_bytes@entry=0x7fffd035d7c4, >>> max_in_bytes=max_in_bytes@entry=0, >>> max_out_bytes=max_out_bytes@entry=0) at >>> /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1034 >>> >>> Check if vring.avail != null before accessing it. >>> >>> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> >>> --- >>> contrib/libvhost-user/libvhost-user.c | 4 ++++ >>> 1 file changed, 4 insertions(+) >>> >>> diff --git a/contrib/libvhost-user/libvhost-user.c >>> b/contrib/libvhost-user/libvhost-user.c >>> index af4faad60b..f9680b6279 100644 >>> --- a/contrib/libvhost-user/libvhost-user.c >>> +++ b/contrib/libvhost-user/libvhost-user.c >>> @@ -1031,6 +1031,10 @@ vu_queue_get_avail_bytes(VuDev *dev, VuVirtq *vq, >>> unsigned int *in_bytes, >>> idx = vq->last_avail_idx; >>> >>> total_bufs = in_total = out_total = 0; >>> + if (!vq->vring.avail) { >>> + goto done; >>> + } >>> + >>> while ((rc = virtqueue_num_heads(dev, vq, idx)) > 0) { >>> unsigned int max, num_bufs, indirect = 0; >>> struct vring_desc *desc; >>> >> >> It seems to me safer to fix instead vring_avail_ring(), and fix >> neighbours vring_avail_flags() and vring_avail_idx() while here. > > Those are internal/static functions, possibly on hot paths. So I would rather keep the check on the external/public functions only. Fair enough. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash 2017-05-03 12:11 [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Marc-André Lureau 2017-05-03 12:11 ` [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer Marc-André Lureau 2017-05-03 12:26 ` [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Philippe Mathieu-Daudé @ 2017-05-03 14:56 ` Dr. David Alan Gilbert 2 siblings, 0 replies; 7+ messages in thread From: Dr. David Alan Gilbert @ 2017-05-03 14:56 UTC (permalink / raw) To: Marc-André Lureau; +Cc: qemu-devel, mst * Marc-André Lureau (marcandre.lureau@redhat.com) wrote: > Calling vu_queue_get_avail_bytes() when the queue doesn't yet have > addresses will result in the following crash: > > Program received signal SIGSEGV, Segmentation fault. > 0x000055c414112ce4 in vring_avail_idx (vq=0x55c41582fd68, vq=0x55c41582fd68) > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > 940 vq->shadow_avail_idx = vq->vring.avail->idx; > (gdb) p vq > $1 = (VuVirtq *) 0x55c41582fd68 > (gdb) p vq->vring > $2 = {num = 0, desc = 0x0, avail = 0x0, used = 0x0, log_guest_addr = 0, flags = 0} > > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:940 > No locals. > at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:960 > num_heads = <optimized out> > out_bytes=out_bytes@entry=0x7fffd035d7c4, max_in_bytes=max_in_bytes@entry=0, > max_out_bytes=max_out_bytes@entry=0) at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1034 > > Check if vring.avail != null before accessing it. > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> This doesn't seem to fully solve it, it's now failing at: #0 vring_used_idx_set (val=0, vq=0x5570fcb49d68, dev=0x5570fcb49c20) at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1472 No locals. #1 vu_queue_flush (dev=0x5570fcb49c20, vq=0x5570fcb49d68, count=0) at /home/dgilbert/git/qemu/contrib/libvhost-user/libvhost-user.c:1494 old = 0 new = 0 #2 0x00005570fb8d9639 in vubr_backend_recv_cb (sock=<optimized out>, ctx=0x5570fcb49c20) at /home/dgilbert/git/qemu/tests/vhost-user-bridge.c:349 vubr = 0x5570fcb49c20 dev = 0x5570fcb49c20 vq = 0x5570fcb49d68 elem = <optimized out> mhdr_sg = {{iov_base = 0x0, iov_len = 0} <repeats 740 times>, {iov_base = 0x0, iov_len = 139877843420656}, { iov_len = 0}...} mhdr = {hdr = {flags = 0 '\000', gso_type = 0 '\000', hdr_len = 0, gso_size = 0, csum_start = 0, csum_offset = 0}, num_buffers = 0} mhdr_cnt = <optimized out> hdrlen = 0 i = <optimized out> hdr = {flags = 0 '\000', gso_type = 0 '\000', hdr_len = 0, gso_size = 0, csum_start = 0, csum_offset = 0} __PRETTY_FUNCTION__ = "vubr_backend_recv_cb" #3 0x00005570fb8d8ad3 in dispatcher_wait (timeout=200000, dispr=0x5570fcb4a0b8) at /home/dgilbert/git/qemu/tests/vhost-user-bridge.c:154 e = 0x5570fcb4a180 tv = {tv_sec = 0, tv_usec = 199998} fdset = {fds_bits = {48, 0 <repeats 15 times>}} rc = <optimized out> sock = 4 #4 vubr_run (dev=<optimized out>) at /home/dgilbert/git/qemu/tests/vhost-user-bridge.c:624 No locals. #5 main (argc=<optimized out>, argv=<optimized out>) at /home/dgilbert/git/qemu/tests/vhost-user-bridge.c:697 opt = <optimized out> client = <optimized out> Dave > --- > contrib/libvhost-user/libvhost-user.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c > index af4faad60b..f9680b6279 100644 > --- a/contrib/libvhost-user/libvhost-user.c > +++ b/contrib/libvhost-user/libvhost-user.c > @@ -1031,6 +1031,10 @@ vu_queue_get_avail_bytes(VuDev *dev, VuVirtq *vq, unsigned int *in_bytes, > idx = vq->last_avail_idx; > > total_bufs = in_total = out_total = 0; > + if (!vq->vring.avail) { > + goto done; > + } > + > while ((rc = virtqueue_num_heads(dev, vq, idx)) > 0) { > unsigned int max, num_bufs, indirect = 0; > struct vring_desc *desc; > -- > 2.12.0.191.gc5d8de91d > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2017-05-03 14:56 UTC | newest] Thread overview: 7+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2017-05-03 12:11 [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Marc-André Lureau 2017-05-03 12:11 ` [Qemu-devel] [PATCH 2/2] libvhost-user: make vu_queue_empty() safer Marc-André Lureau 2017-05-03 12:27 ` Philippe Mathieu-Daudé 2017-05-03 12:26 ` [Qemu-devel] [PATCH 1/2] libvhost-user: fix vu_queue_get_avail_bytes() crash Philippe Mathieu-Daudé 2017-05-03 12:32 ` Marc-André Lureau 2017-05-03 12:57 ` Philippe Mathieu-Daudé 2017-05-03 14:56 ` Dr. David Alan Gilbert
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