ipc: handle more invalid parameter cases

Length of buffer and number of fd's to send are signed values, so
they can be negative, but the API doesn't check for that. Fix it
by checking for negative values as well.

Fixes: bacaa2754017 ("eal: add channel for multi-process communication")
Cc: stable@dpdk.org
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>

diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c
index 6ffd476861c7ca37fe3f9e10a2f305aa35a893a2..d098803b11c690b9297c58440ddf978f88ea8259 100644 (file)
--- a/lib/librte_eal/common/eal_common_proc.c
+++ b/lib/librte_eal/common/eal_common_proc.c
@@ -761,6 +761,18 @@ check_input(const struct rte_mp_msg *msg)
        if (validate_action_name(msg->name))
                return false;
 
+       if (msg->len_param < 0) {
+               RTE_LOG(ERR, EAL, "Message data length is negative\n");
+               rte_errno = EINVAL;
+               return false;
+       }
+
+       if (msg->num_fds < 0) {
+               RTE_LOG(ERR, EAL, "Number of fd's is negative\n");
+               rte_errno = EINVAL;
+               return false;
+       }
+
        if (msg->len_param > RTE_MP_MAX_PARAM_LEN) {
                RTE_LOG(ERR, EAL, "Message data is too long\n");
                rte_errno = E2BIG;