Date: Wed, 8 May 2019 12:59:57 +0200 From: Andrea Venturoli <ml@netfence.it> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-ports@freebsd.org, timur@FreeBSD.org Subject: Re: Samba dump (useless) core Message-ID: <0eb47166-ddaf-d0ed-7730-91341634c72c@netfence.it> In-Reply-To: <20190508102504.GY2748@kib.kiev.ua> References: <169305b9-64ea-6305-8ef2-9c11b8c9baf3@netfence.it> <20190508102504.GY2748@kib.kiev.ua>
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On 5/8/19 12:25 PM, Konstantin Belousov wrote: > Signal 6 is SIGABRT, which means most likely that some assert was triggered. > You should look into your logs. samba.log shows nothing at level 1 (default); at level 3 gives gobs of information and I don't look what to look for. In all.log, however, I have something like this: > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493769, 0] ../source3/libsmb/trusts_util.c:334(trust_pw_change) > May 8 12:48:11 xxxx kernel: May 8 12:48:09 xxxx last message repeated 4 times > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493769, 0] ../source3/libsmb/trusts_util.c:334(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): A password change was already started against 'dc1.ad.xxxxxxxxxxxxx.it' at Mon Apr 29 12:22:51 2019 CEST. Trying to recover... > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): A password change was already started against 'dc1.ad.xxxxxxxxxxxxx.it' at Mon Apr 29 12:22:51 2019 CEST. Trying to recover... > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493910, 0] ../source3/libsmb/trusts_util.c:343(trust_pw_change) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493910, 0] ../source3/libsmb/trusts_util.c:343(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Last failure local[NT_STATUS_NOT_COMMITTED] remote[NT_STATUS_CONNECTION_DISCONNECTED] against 'dc1.ad.xxxxxxxxxxxxx.it' at Wed May 8 12:47:11 2019 CEST. > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Last failure local[NT_STATUS_NOT_COMMITTED] remote[NT_STATUS_CONNECTION_DISCONNECTED] against 'dc1.ad.xxxxxxxxxxxxx.it' at Wed > May 8 12:47:11 2019 CEST. > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493986, 0] ../source3/libsmb/trusts_util.c:380(trust_pw_change) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.493986, 0] ../source3/libsmb/trusts_util.c:380(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Verifying passwords remotely netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX]. > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Verifying passwords remotely netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX]. > May 8 12:48:11 xxxx samba[54713]: stack overflow detected; terminated > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.496724, 0] ../source3/libsmb/trusts_util.c:452(trust_pw_change) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx samba[54713]: stack overflow detected; terminated > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.496724, 0] ../source3/libsmb/trusts_util.c:452(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Verified old password remotely using netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX] > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Verified old password remotely using netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX] > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.496828, 0] ../source3/libsmb/trusts_util.c:491(trust_pw_change) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.496828, 0] ../source3/libsmb/trusts_util.c:491(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Changed password locally > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX): Changed password locally > May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.636003, 0] ../source3/libsmb/trusts_util.c:507(trust_pw_change) > May 8 12:48:11 xxxx kernel: pid 54713 (samba), uid 0: exited on signal 6 (core dumped) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: [2019/05/08 12:48:11.636003, 0] ../source3/libsmb/trusts_util.c:507(trust_pw_change) > May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX) remote password change with netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX] failed - NT_STATUS_CONNECTION_DISCONNECTED (disconnected) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx winbindd[83147]: 2019/05/08 12:48:11 : trust_pw_change(XX) remote password change with netlogon_creds_cli:CLI[FS/FS$]/SRV[DC1/XX] failed - NT_STATUS_CONNECTION_DISCONNECTED (disconnected > ) > May 8 12:48:11 xxxx samba[80265]: [2019/05/08 12:48:11.639630, 0] ../source4/smbd/process_standard.c:158(standard_child_pipe_handler) > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx samba[80265]: [2019/05/08 12:48:11.639630, 0] ../source4/smbd/process_standard.c:158(standard_child_pipe_handler) > May 8 12:48:11 xxxx samba[80265]: standard_child_pipe_handler: Child 54713 () terminated with signal 6 > May 8 12:48:11 xxxx kernel: May 8 12:48:11 xxxx samba[80265]: standard_child_pipe_handler: Child 54713 () terminated with signal 6 While this sheds some light (seems the whole thing has to do with trust password change), it shows a stack overflow, not an assert. So the question is two-fold: a) how do I get out of this? Remove the other member from the domain and rejoin? Try and fix the DB (how)? Other? (I understand this would be a question better answere on Samba list, but we are already here). b) if there's a stack overflow, isn't that a bug? How can I check it and report it (to FreeBSD or Samba, once the details can let me decide) if I cannot get a proper core? I guess I'd have to look into a way to generate debug info with Poudriere... what's the proper way to do this? bye & Thanks av.
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