Date: Sat, 16 Mar 2013 05:40:29 +0000 (UTC) From: Neel Natu <neel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r248368 - head/usr.sbin/bhyve Message-ID: <201303160540.r2G5eTlC025783@svn.freebsd.org>
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Author: neel Date: Sat Mar 16 05:40:29 2013 New Revision: 248368 URL: http://svnweb.freebsd.org/changeset/base/248368 Log: Change the type of 'ndesc' from 'int' to 'uint16_t' so that descriptor index wraparound is handled correctly. The gory details are available here: http://lists.freebsd.org/pipermail/freebsd-virtualization/2013-March/001119.html This fixes a regression introduced in r247871. Pointed out by: Bruce Evans, Chris Torek Modified: head/usr.sbin/bhyve/pci_virtio_net.c Modified: head/usr.sbin/bhyve/pci_virtio_net.c ============================================================================== --- head/usr.sbin/bhyve/pci_virtio_net.c Sat Mar 16 04:08:01 2013 (r248367) +++ head/usr.sbin/bhyve/pci_virtio_net.c Sat Mar 16 05:40:29 2013 (r248368) @@ -170,7 +170,7 @@ pci_vtnet_iosize(struct pci_devinst *pi) static int hq_num_avail(struct vring_hqueue *hq) { - int ndesc; + uint16_t ndesc; /* * We're just computing (a-b) in GF(216).
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