Hi I have compiled mobile app with tx support . i.e i have checked-out the testing branch . Layer 1 seems to be uploaded to the mobile phone successfully. But the program crashes every-time there is a successful connection with the network service provider. I am attaching my mobile.log and layer1.log file along for debugging. Hoping some one replies. " mmsgb(0x8955b0): Not enough headroom msgb_push (4285966792 < 7) errors Dropping frame with 66 bit errors Dropping frame with 65 bit errors Dropping frame with 58 bit errors Dropping frame with 56 bit errors LOSS counter for CCCH 57 Dropping frame with 66 bit errors Dropping frame with 66 bit errors Dropping frame with 65 bit errors Dropping frame with 65 bit errors Dropping frame with 70 bit errors Dropping frame with 65 bit errors Dropping frame with 80 bit errors LOSS counter for CCCH 53 Dropping frame with 61 bit errors Dropping frame with 76 bit errors Dropping frame with 57 bit errors Dropping frame with 67 bit errors Dropping frame with 58 bit errors Dropping frame with 72 bit errors Dropping frame with 63 bit errors Dropping frame with 70 bit errors LOSS counter for CCCH 49 Dropping frame with 57 bit errors Dropping frame with 61 bit errors Dropping frame with 52 bit errors Dropping frame with 77 bit errors Dropping frame with 60 bit errors Dropping frame with 57 bit errors Dropping frame with 76 bit errors LOSS counter for CCCH 45 Dropping frame with 70 bit errors Dropping frame with 57 bit errors Dropping frame with 65 bit errors Dropping frame with 46 bit errors Dropping frame with 65 bit errors Dropping frame with 46 bit errors Dropping frame with 70 bit errors Dropping frame with 77 bit errors LOSS counter for CCCH 46 Dropping frame with 51 bit errors Dropping frame with 56 bit errors Dropping frame with 65 bit errors Dropping frame with 59 bit errors Dropping frame with 65 bit errors Dropping frame with 60 bit errors Dropping frame with 72 bit errors Dropping frame with 79 bit errors Dropping frame with 75 bit errors Dropping frame with 59 bit errors Dropping frame with 72 bit errors Dropping frame with 66 bit errors Dropping frame with 69 bit errors Dropping frame with 70 bit errors Dropping frame with 65 bit errors Dropping frame with 69 bit errors Dropping frame with 66 bit errors Dropping frame with 82 bit errors Dropping frame with 80 bit errors LOSS counter for CCCH 86 Dropping frame with 67 bit errors Dropping frame with 63 bit errors Dropping frame with 69 bit errors Dropping frame with 69 bit errors Dropping frame with 66 bit errors Dropping frame with 76 bit errors Dropping frame with 63 bit errors LOSS counter for CCCH 87 Dropping frame with 53 bit errors Dropping frame with 54 bit errors LOSS counter for CCCH 88 LOSS counter for CCCH 89 Dropping frame with 46 bit errors Dropping frame with 50 bit errors Dropping frame with 45 bit errors backtrace() returned 10 addresses /usr/local/lib/libosmocore.so.6(osmo_panic+0xbe) [0x7f3ccd0745ce] /usr/local/lib/libosmogsm.so.5(lapdm_phsap_up+0x18e) [0x7f3cccc3cc5e] ./mobile() [0x438c29] ./mobile() [0x4394cc] /usr/local/lib/libosmocore.so.6(osmo_wqueue_bfd_cb+0x73) [0x7f3ccd071b63] /usr/local/lib/libosmocore.so.6(osmo_select_main+0x18f) [0x7f3ccd070b9f] ./mobile() [0x4048bf] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f3ccc679ec5] ./mobile() [0x404a46] " there is core dumped after this error.