can-host-socketcan: Fix crash when 'if' option is not set
Fix the following crash: $ qemu-system-x86_64 -object can-host-socketcan,id=obj0 Segmentation fault (core dumped) Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Message-Id: <20201008202713.1416823-3-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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@ -194,6 +194,11 @@ static void can_host_socketcan_connect(CanHostState *ch, Error **errp)
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struct sockaddr_can addr;
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struct sockaddr_can addr;
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struct ifreq ifr;
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struct ifreq ifr;
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if (!c->ifname) {
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error_setg(errp, "'if' property not set");
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return;
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}
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/* open socket */
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/* open socket */
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s = qemu_socket(PF_CAN, SOCK_RAW, CAN_RAW);
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s = qemu_socket(PF_CAN, SOCK_RAW, CAN_RAW);
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if (s < 0) {
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if (s < 0) {
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