Commit 5c3234c6 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Venkateswararao Jujjuri (JV)
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hw/9pfs: Don't crash when we get a request with not supported 9p operation 



Return EOPNOTSUPP as error

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarVenkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>
parent faa44e3d

hw/9pfs/virtio-9p.c

+11 −6
Original line number Diff line number Diff line
@@ -3606,6 +3606,11 @@ static pdu_handler_t *pdu_handlers[] = { 
    [P9_TREMOVE] = v9fs_remove,

};



static void v9fs_op_not_supp(V9fsState *s, V9fsPDU *pdu)

{

    complete_pdu(s, pdu, -EOPNOTSUPP);

}



static void submit_pdu(V9fsState *s, V9fsPDU *pdu)

{

    pdu_handler_t *handler;
@@ -3613,12 +3618,12 @@ static void submit_pdu(V9fsState *s, V9fsPDU *pdu) 
    if (debug_9p_pdu) {

        pprint_pdu(pdu);

    }



    BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers));



    if (pdu->id >= ARRAY_SIZE(pdu_handlers) ||

        (pdu_handlers[pdu->id] == NULL)) {

        handler = v9fs_op_not_supp;

    } else {

        handler = pdu_handlers[pdu->id];

    BUG_ON(handler == NULL);



    }

    handler(s, pdu);

}