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From d6ab4b2c2b8dac019452a9237def64ac7c9803a1 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Wed, 4 Jul 2018 09:00:54 +0200
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Subject: [PATCH 186/268] xhci: fix guest-triggerable assert
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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: <20180704090054.5101-2-kraxel@redhat.com>
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Patchwork-id: 81224
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 1/1] xhci: fix guest-triggerable assert
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Bugzilla: 1594135
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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Set xhci into error state instead of throwing a core dump.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: 20180702162752.29233-1-kraxel@redhat.com
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(cherry picked from commit 8f36ec708834dfad58af6feb0b69bb0be6077f0f)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/usb/hcd-xhci.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
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index 181e803..45fcce3 100644
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--- a/hw/usb/hcd-xhci.c
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+++ b/hw/usb/hcd-xhci.c
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@@ -1954,7 +1954,12 @@ static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid)
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for (i = 0; i < length; i++) {
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TRBType type;
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type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL);
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- assert(type);
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+ if (!type) {
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+ xhci_die(xhci);
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+ xhci_ep_free_xfer(xfer);
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+ epctx->kick_active--;
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+ return;
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+ }
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}
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xfer->streamid = streamid;
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--
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1.8.3.1
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