Thread: BUG #18315: Segmentation fault on connection (repmgr, psql)
The following bug has been logged on the website: Bug reference: 18315 Logged by: Ivan Kalafatić Email address: ikalafat@gmail.com PostgreSQL version: 16.1 Operating system: Debian 12 Description: Hi, I am intermittently getting following errors (taken from var/log/syslog), on pg_basebackup, repmgrd and psql (so far) repmgr[1147164] general protection fault ip:7fb9950981b5 sp:7ffecf4418f8 error:0 in libkrb5.so.3.3[7fb99506a000+5f000] also this: pg_basebackup[4191295] general protection fault ip:7f344e9771b5 sp:7ffe8c625c28 error:0 in libkrb5.so.3.3[7f344e949000+5f000] and this psql[4045720] general protection fault ip:7f89130931b5 sp:7fffd40a0268 error:0 in libkrb5.so.3.3[7f8913065000+5f000] Looks like that the error is related to GSSAPI/kerberos auth? I have tried replacing "host" type within pg_hba.conf to "hostnogssenc", but problem persists. Running Debian 12 with all updates, repmgr, timescaledb extensions (fresh install). PostgreSQL 16.1 (Debian 16.1-1.pgdg120+1) Looks like the server itself is not affected (isn't crashing etc). Is there anything that I could do to disable GSSAPI/kerberos and/or circumvent this issue? Also, how can I provide more info for this issue to be resolved. Thanks.
Additional info: in the meantime, I've tried adding require_auth=none and gssencmode=disable connection string parameters (separately, not together at once) for the repmgr/client connections that are "trusted" through pg_hba.conf, but the problem persisted.
On Tue, 30 Jan 2024 at 16:17, PG Bug reporting form <noreply@postgresql.org> wrote:
The following bug has been logged on the website:
Bug reference: 18315
Logged by: Ivan Kalafatić
Email address: ikalafat@gmail.com
PostgreSQL version: 16.1
Operating system: Debian 12
Description:
Hi,
I am intermittently getting following errors (taken from var/log/syslog), on
pg_basebackup, repmgrd and psql (so far)
repmgr[1147164] general protection fault ip:7fb9950981b5 sp:7ffecf4418f8
error:0 in libkrb5.so.3.3[7fb99506a000+5f000]
also this:
pg_basebackup[4191295] general protection fault ip:7f344e9771b5
sp:7ffe8c625c28 error:0 in libkrb5.so.3.3[7f344e949000+5f000]
and this
psql[4045720] general protection fault ip:7f89130931b5 sp:7fffd40a0268
error:0 in libkrb5.so.3.3[7f8913065000+5f000]
Looks like that the error is related to GSSAPI/kerberos auth? I have tried
replacing "host" type within pg_hba.conf to "hostnogssenc", but problem
persists.
Running Debian 12 with all updates, repmgr, timescaledb extensions (fresh
install). PostgreSQL 16.1 (Debian 16.1-1.pgdg120+1)
Looks like the server itself is not affected (isn't crashing etc).
Is there anything that I could do to disable GSSAPI/kerberos and/or
circumvent this issue? Also, how can I provide more info for this issue to
be resolved.
Thanks.
Another update and fun fact.
After a few days of database servers being idle, I no longer see these errors.
For the sake of additional testing, I rebooted one of the machines in the cluster and immediately started seeing errors again.
Looks more like an OS issue than PostgreSQL itself, but I have no idea where to look. The weird thing is that the issue always happens on libkrb5.so.3.3.
After a few days of database servers being idle, I no longer see these errors.
For the sake of additional testing, I rebooted one of the machines in the cluster and immediately started seeing errors again.
Looks more like an OS issue than PostgreSQL itself, but I have no idea where to look. The weird thing is that the issue always happens on libkrb5.so.3.3.
I'm completely lost here.
I can confirm that the underlying hardware (on the hypervisor) is OK.
Any additional ideas would be of help. Thanks
Ivan Kalafatić
Any additional ideas would be of help. Thanks
Ivan Kalafatić
On Tue, 30 Jan 2024 at 21:22, Ivan Kalafatić <ikalafat@gmail.com> wrote:
Additional info: in the meantime, I've tried adding require_auth=none and gssencmode=disable connection string parameters (separately, not together at once) for the repmgr/client connections that are "trusted" through pg_hba.conf, but the problem persisted.On Tue, 30 Jan 2024 at 16:17, PG Bug reporting form <noreply@postgresql.org> wrote:The following bug has been logged on the website:
Bug reference: 18315
Logged by: Ivan Kalafatić
Email address: ikalafat@gmail.com
PostgreSQL version: 16.1
Operating system: Debian 12
Description:
Hi,
I am intermittently getting following errors (taken from var/log/syslog), on
pg_basebackup, repmgrd and psql (so far)
repmgr[1147164] general protection fault ip:7fb9950981b5 sp:7ffecf4418f8
error:0 in libkrb5.so.3.3[7fb99506a000+5f000]
also this:
pg_basebackup[4191295] general protection fault ip:7f344e9771b5
sp:7ffe8c625c28 error:0 in libkrb5.so.3.3[7f344e949000+5f000]
and this
psql[4045720] general protection fault ip:7f89130931b5 sp:7fffd40a0268
error:0 in libkrb5.so.3.3[7f8913065000+5f000]
Looks like that the error is related to GSSAPI/kerberos auth? I have tried
replacing "host" type within pg_hba.conf to "hostnogssenc", but problem
persists.
Running Debian 12 with all updates, repmgr, timescaledb extensions (fresh
install). PostgreSQL 16.1 (Debian 16.1-1.pgdg120+1)
Looks like the server itself is not affected (isn't crashing etc).
Is there anything that I could do to disable GSSAPI/kerberos and/or
circumvent this issue? Also, how can I provide more info for this issue to
be resolved.
Thanks.