[PATCH 1/4] gprs_gmm: ensure llme present upon Attach Req (CID #57686)

--- openbsc/src/gprs/gprs_gmm.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c index 5f0a5fd..438e047 100644 --- a/openbsc/src/gprs/gprs_gmm.c +++ b/openbsc/src/gprs/gprs_gmm.c @@ -838,6 +838,10 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg, int rc;

LOGMMCTXP(LOGL_INFO, ctx, "-> GMM ATTACH REQUEST "); + if (!llme) { + LOGMMCTXP(LOGL_ERROR, ctx, "No LLME for GMM ATTACH REQUEST"); + return -EINVAL; + }

/* As per TS 04.08 Chapter 4.7.1.4, the attach request arrives either * with a foreign TLLI (P-TMSI that was allocated to the MS before),