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Neels Hofmeyr nhofmeyr at sysmocom.deHi Ruben, > Most of the openbsc packages are now up-to-date in Debian! : > https://qa.debian.org/developer.php?email=Debian-mobcom-maintainers%40lists.alioth.debian.org Nice! I'd like to mention a detail, recently I tried to build osmo-iuh on a freshly installed Debian 9 machine, and it gets a segfault in gcc. Do you hit this when building packages? Thanks! ~N On Mon, Nov 12, 2018 at 10:35:28PM +0100, Ruben Undheim wrote: > Hi, > > > , but there are a few failing builds on some officially supported > Debian architectures (mostly failing test suites): > > osmo-bsc: > - mips (https://buildd.debian.org/status/fetch.php?pkg=osmo-bsc&arch=mips&ver=1.2.1-1&stamp=1542052520&raw=0) > ("gsm0408" and many "handover" tests failing) I rebuilt repositories matching osmo-bsc version 1.2.1 as indicated here; was a bit hard until I disabled Werror as well as the address sanitizer. Comparing the output... Quite early up in the test, a measurement report is simulated, and on mips, it is interpreted as two neighbors, while there should be only one neighbor. Should be: - Sending measurement report from mobile #0 (rxlev=30, rxqual=6) * Neighbor cell #0, actual BTS 1 (rxlev=40) DRSL abis_rsl.c:1538 (bts=0,trx=0,ts=1,ss=0): meas_rep_count++=1 meas_rep_last_seen_nr=0 DMEAS abis_rsl.c:1409 [(bts=0,trx=0,ts=1,ss=0)] MEASUREMENT RESULT NR=0 RXL-FULL-ul=-110dBm RXL-SUB-ul=-110dBm RXQ-FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR=-22dBm L1_FPC=0 L1_TA=0 RXL-FULL-dl=-80dBm RXL-SUB-dl=-80dBm RXQ-FULL-dl=6 RXQ-SUB-dl=6 NUM_NEIGH=1 DMEAS abis_rsl.c:1442 IDX=0 ARFCN=871 BSIC=63 => -70 dBm DHODEC handover_decision_2.c:1131 (lchan 0.010 TCH/F) (subscr unknown) MEASUREMENT REPORT (1 neighbors) DHODEC handover_decision_2.c:1136 (lchan 0.010 TCH/F) (subscr unknown) 0: arfcn=871 bsic=63 neigh_idx=0 rxlev=40 flags=0 DHODEC handover_decision_2.c:291 (lchan 0.010 TCH/F) (subscr unknown) neigh 871 new in report rxlev=40 last_seen_nr=0 mips gets: - Sending measurement report from mobile #0 (rxlev=30, rxqual=6) * Neighbor cell #0, actual BTS 1 (rxlev=40) DRSL abis_rsl.c:1538 (bts=0,trx=0,ts=1,ss=0): meas_rep_count++=1 meas_rep_last_seen_nr=0 DMEAS abis_rsl.c:1409 [(bts=0,trx=0,ts=1,ss=0)] MEASUREMENT RESULT NR=0 RXL-FULL-ul=-110dBm RXL-SUB-ul=-110dBm RXQ-FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR=-22dBm L1_FPC=0 L1_TA=0 DTXu NOT VALID NUM_NEIGH=2 DMEAS abis_rsl.c:1442 IDX=28 ARFCN=0 BSIC=0 => -77 dBm DMEAS abis_rsl.c:1442 IDX=0 ARFCN=871 BSIC=0 => -96 dBm DHODEC handover_decision_2.c:1131 (lchan 0.010 TCH/F) (subscr unknown) MEASUREMENT REPORT (2 neighbors) DHODEC handover_decision_2.c:1136 (lchan 0.010 TCH/F) (subscr unknown) 0: arfcn=0 bsic=0 neigh_idx=28 rxlev=33 flags=0 DHODEC handover_decision_2.c:1136 (lchan 0.010 TCH/F) (subscr unknown) 1: arfcn=871 bsic=0 neigh_idx=0 rxlev=14 flags=0 DHODEC handover_decision_2.c:291 (lchan 0.010 TCH/F) (subscr unknown) neigh 0 new in report rxlev=33 last_seen_nr=0 DHODEC handover_decision_2.c:291 (lchan 0.010 TCH/F) (subscr unknown) neigh 871 new in report rxlev=14 last_seen_nr=0 On mips the report is misinterpreted with wildly wrong values; actually starts with "DTXu NOT VALID", continues with the bsic and rxlev... I wonder why that happens. Either handover_test.c encodes it non-portably, or the decoding has a problem. handover_test.c encodes a measurement report using struct gsm48_meas_res, which has sub-byte ints. It is known that these need #ifdef shims to swap the positions for big-endian vs. little-endian, which this struct does *not* have. This mips is big endian, right? Then that would be the issue. Unfortunately I can't test on mips, is there any way that we can easily test a patch on such an arch? Also, if we fix this on current master, then that doesn't help osmo-bsc v 1.2.1 using libosmocore 0.11.0. We don't have a backporting process at Osmocom. Yet. Maybe it will just be broken until we package more recent versions? There are numerous other packed structs in libosmocore/include/osmocom/gsm/protocol/gsm_04_08.h with sub-byte ints that lack the BIG_ENDIAN shims. https://osmocom.org/issues/3693 I don't have a fix yet, let's discuss how a fix would help debian builds as asked above... And whether we really need to support big endian...? ~N -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20181114/58c2ad94/attachment.bin>