Cellular Network Infrastructure » Core Network (CN) » OsmoCBC

Since recently, we're seeing several regressions in ttcn3-cbc-test (master):

https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-cbc-test/851/ (+8 failing testcases)

There is a core file in the artifacts:

https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-cbc-test/851/artifact/logs/cbc/

#0  0x00007f2fcd7f7774 in __GI__IO_default_xsputn (f=0x7ffdc0da55e0, data=0x7f2fcd9164a0 <zeroes>, n=1) at genops.c:374
#1  0x00007f2fcd7eaa63 in __GI__IO_padn (fp=fp@entry=0x7ffdc0da55e0, pad=pad@entry=48, count=count@entry=1) at libioP.h:948
#2  0x00007f2fcd7e14e5 in pad_func (done=4, width=1, padchar=48 '0', s=0x7ffdc0da55e0) at vfprintf-internal.c:196
#3  __vfprintf_internal (s=s@entry=0x7ffdc0da55e0, format=format@entry=0x7f2fcda0b87a "%04d%02d%02d%02d%02d%02d%03d ", ap=ap@entry=0x7ffdc0da5760, 
    mode_flags=mode_flags@entry=2) at vfprintf-internal.c:1646
#4  0x00007f2fcd7f2606 in __vsnprintf_internal (string=0x7f2fcc99d1df "2023", maxlen=<optimized out>, format=0x7f2fcda0b87a "%04d%02d%02d%02d%02d%02d%03d ", 
    args=args@entry=0x7ffdc0da5760, mode_flags=2) at vsnprintf.c:114
#5  0x00007f2fcd882b31 in ___snprintf_chk (s=<optimized out>, maxlen=<optimized out>, flag=<optimized out>, slen=<optimized out>, format=<optimized out>)
    at snprintf_chk.c:38
#6  0x00007f2fcd9ee967 in ?? () from /usr/lib/x86_64-linux-gnu/libosmocore.so.20
#7  0x00007f2fcd9eed4e in ?? () from /usr/lib/x86_64-linux-gnu/libosmocore.so.20
#8  0x00007f2fcd9eeefe in osmo_vlogp () from /usr/lib/x86_64-linux-gnu/libosmocore.so.20
#9  0x00007f2fcd9ef197 in logp2 () from /usr/lib/x86_64-linux-gnu/libosmocore.so.20
#10 0x000055fa5ed08f0a in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:105
#11 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#12 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#13 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#14 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#15 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#16 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#17 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#18 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#19 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#20 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#21 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#22 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#23 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#24 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#25 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#26 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#27 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#28 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#29 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#30 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#31 0x000055fa5ed08fae in cbc_cbsp_link_cli_disconnect_cb (conn=0x55fa5fcc3de0) at cbsp_link.c:107
#32 0x00007f2fcd9b6939 in osmo_stream_cli_close () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
#33 0x00007f2fcd9b6a1e in osmo_stream_cli_reconnect () from /usr/lib/x86_64-linux-gnu/libosmonetif.so.11
... (thousands more)

Looks like a bug/regression in libosmo-netif?