This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "Osmocom BTS-side code (Abis, scheduling, ...)". The branch, laforge/fsm-name has been created at 7536823ea41a2cb7fc26b8c9a524b2b48a39dfee (commit) - Log ----------------------------------------------------------------- http://cgit.osmocom.org/osmo-bts/commit/?id=7536823ea41a2cb7fc26b8c9a524b2b… commit 7536823ea41a2cb7fc26b8c9a524b2b48a39dfee Author: Harald Welte &lt;laforge(a)gnumonks.org&gt; Date: Tue Oct 31 15:29:35 2017 -0400 DTX: avoid illegal character contained in DTX FSM allocation which causes BTS crash Problem: lchan->tch.dtx.dl_amr_fsm struct failed to allocate in l1sap_chan_act routine in l1sap.c due to illegal characters contained in lchan->name which are passed to osmo_fsm_inst_alloc routine. As a result, lchan->tch.dtx.dl_amr_fsm is NULL causing BTS crashed (SEG FAULT) when trying to access this struct. Below is snapshot of crash log obtained by GDB: ... Fri Nov 24 18:13:55 2017 <0000> rsl.c:1653 payload type: 98 Fri Nov 24 18:13:55 2017 <0000> rsl.c:1463 (bts=0,trx=0,ts=2,ss=0) RSL Tx IPAC_MDCX_ACK (local 127.0.0.1:11538, remote 127.0.0.1:30012) Program received signal SIGSEGV, Segmentation fault. 0x00031930 in dtx_dl_amr_fsm_step (lchan=lchan@entry=0xb69592a8, rtp_pl=rtp_pl@entry=0x87ae8 " \024\351Y\363_\337\345\351f\177\373\300\210\201\200\210", rtp_pl_len=17, fn=1728481, l1_payload=0x10dd25 "", marker=marker@entry=true, len=len@entry=0x10ddc4 "\024", ft_out=0xbefff7d7 "\002", ft_out@entry=0xbefff7cf "\276\341_\032") at msg_utils.c:233 233 msg_utils.c: No such file or directory. ... Fix: * Use different formatting for lchan name passed to osmo_fsm_inst_alloc routine * Refuse channel activation if FSM could not be generated (as opposed to crash) Related: OS#2606 Reported-by: Minh-Quang Nguyen &lt;minh-quang.nguyen(a)nutaq.com&gt; Change-Id: I929ce3703dc57acf8db569ae0e346265644d0b3c ----------------------------------------------------------------------- hooks/post-receive -- Osmocom BTS-side code (Abis, scheduling, ...)