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Bug #6180
closedASSERT in l1sap_tch_ind
Start date:
09/14/2023
Due date:
% Done:
100%
Spec Reference:
Description
On a sysmoBTS with the latest release, I observed regularly hitting this ASSERT at https://gerrit.osmocom.org/c/osmo-bts/+/33832/5/src/common/l1sap.c#1982
case RSL_CMOD_SPD_SIGN:
default: /* shall not happen */
OSMO_ASSERT(0);
}
I've patched to avoid this ASSERT based on fixeria 's advice on IRC to get this BTS back up and running, so I can't reproduce right now.
(I've only installed the release on one system)
Here's a backtrace I did grab from the terminal scrollback, probably not very useful:
((*))
|
/ \ OsmoBTS
Assert failed 0 ../../../git/src/common/l1sap.c:1983
backtrace() returned 0 addresses
Program received signal SIGABRT, Aborted.
0x432dcf74 in raise () from /lib/libc.so.6
(gdb) bt
#0 0x432dcf74 in raise () from /lib/libc.so.6
#1 0x432de358 in abort () from /lib/libc.so.6
#2 0xb6e778d4 in osmo_panic_default (args=..., fmt=0x0)
at /usr/src/debug/libosmocore/1.9.0+gitrAUTOINC+aca2c724ae-r2.18.0/git/src/core/panic.c:45
#3 osmo_panic (fmt=0x5f448 "Assert failed %s %s:%d\n")
at /usr/src/debug/libosmocore/1.9.0+gitrAUTOINC+aca2c724ae-r2.18.0/git/src/core/panic.c:80
#4 0x0005098c in l1sap_tch_ind (tch_ind=<optimized out>, l1sap=<optimized out>, trx=0xb6b5a038)
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/common/l1sap.c:1983
#5 l1sap_up (trx=trx@entry=0xb6b5a038, l1sap=<optimized out>)
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/common/l1sap.c:2184
#6 0x00051b34 in add_l1sap_header (trx=trx@entry=0xb6b5a038, rmsg=<optimized out>, lchan=<optimized out>,
chan_nr=<optimized out>, fn=5084, ber10k=1184, lqual_cb=102, rssi=-104 '\230', ta_offs=192, is_sub=0 '\000')
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/common/l1sap.c:179
#7 0x00020b8c in l1if_tch_rx (trx=trx@entry=0xb6b5a038, chan_nr=chan_nr@entry=26 '\032',
l1p_msg=l1p_msg@entry=0x187060)
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/osmo-bts-sysmo/tch.c:611
#8 0x000188e0 in handle_ph_data_ind (l1p_msg=0x187060, data_ind=0x187128, fl1=<optimized out>)
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/osmo-bts-sysmo/l1_if.c:976
#9 l1if_handle_ind (fl1=<optimized out>, msg=0x187060)
at /usr/src/debug/osmo-bts/1.7.0+gitAUTOINC+e97834f2db-r0.18/git/src/osmo-bts-sysmo/l1_if.c:1139
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