git: 001f3d25518c - stable/13 - bhyve: fix regression in legacy virtio-9p config parsing

[John Baldwin]

The branch stable/13 has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=001f3d25518c9179136629abf5ab42cab58c9347

commit 001f3d25518c9179136629abf5ab42cab58c9347
Author:     Roman Bogorodskiy <novel at FreeBSD.org>
AuthorDate: 2021-04-08 14:44:58 +0000
Commit:     John Baldwin <jhb at FreeBSD.org>
CommitDate: 2021-08-11 22:12:42 +0000

    bhyve: fix regression in legacy virtio-9p config parsing
    
    Commit 621b5090487de9fed1b503769702a9a2a27cc7bb introduced a regression
    in legacy virtio-9p config parsing by not initializing *sharename to
    NULL. As a result, "sharename != NULL" check in the first iteration fails
    and bhyve exits with "virtio-9p: more than one share name given".
    
    Fix by adding NULL back.
    
    Approved by:    grehan
    
    (cherry picked from commit f2ecc0d1b7d569b4b2c930c7450390c04778ee8a)
---
 usr.sbin/bhyve/pci_virtio_9p.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.sbin/bhyve/pci_virtio_9p.c b/usr.sbin/bhyve/pci_virtio_9p.c
index 10023158f8bd..6c6dc483b7ba 100644
--- a/usr.sbin/bhyve/pci_virtio_9p.c
+++ b/usr.sbin/bhyve/pci_virtio_9p.c
@@ -232,7 +232,7 @@ pci_vt9p_notify(void *vsc, struct vqueue_info *vq)
 static int
 pci_vt9p_legacy_config(nvlist_t *nvl, const char *opts)
 {
-	char *sharename, *tofree, *token, *tokens;
+	char *sharename = NULL, *tofree, *token, *tokens;
 
 	if (opts == NULL)
 		return (0);