https://bugzilla.redhat.com/show_bug.cgi?id=2120680
Bug ID: 2120680 Summary: sssd-client-2.7.3-1.fc36.x86_64 causes duplicati backups to fail - _nss_sss_getpwuid_r is involved Product: Fedora Version: 36 Status: NEW Component: sssd Severity: high Assignee: sssd-maintainers@lists.fedoraproject.org Reporter: louis@qdcec.co.za QA Contact: extras-qa@fedoraproject.org CC: abokovoy@redhat.com, atikhono@redhat.com, jhrozek@redhat.com, lslebodn@redhat.com, luk.claes@gmail.com, mzidek@redhat.com, pbrezina@redhat.com, sbose@redhat.com, ssorce@redhat.com, sssd-maintainers@lists.fedoraproject.org Target Milestone: --- Classification: Fedora
Created attachment 1907139 --> https://bugzilla.redhat.com/attachment.cgi?id=1907139&action=edit /var/log/messages at the time of failure
Description of problem:
I had been running Duplicati (backup system) successfully for the July 2022. Suddenly, at the start of August, the jobs would crash after a random time period, at any random file. I upgraded from Fedora 35 to Fedora 36, which didn't help. Eventually I found that downgrading sssd-client from 2.7.3-1 (which installed 2.7.0-1) fixed the problem and I got the first successful backups in three weeks.
Duplicati uses mono to run.
Version-Release number of selected component (if applicable): Duplicati was working perfectly when using sssd-client-2.7.1-2.fc35.x86_64 However, after upgrading the sssd group of packages the jobs began to fail. sssd-client-2.7.3-1.fc35.x86_64 As mentioned, I upgraded to Fedora 36, and it still failed when I was running sssd-client-2.7.3-1.fc36.x86_64 But it worked again after running "dnf downgrade sssd-client" which installed sssd-client-2.7.0-1.fc36.x86_64
How reproducible: Once sssd 2.7.3-1 is running, backing up local files (e.g. /home) backed up via Duplicati to an SFTP destination fails at a random time of 10 seconds to 5 hours, and never on the same file. I will paste the /var/log/messages crash dump under "actual results".
Steps to Reproduce: 1. Install Duplicati and run successfully along with sssd-client-2.7.1-2 or earlier. 2. Upgrade to sssd-client-2.7.3-1 3. Become frustrated as backup jobs crash before completion.
Actual results:
The attached file shows what is recorded in /var/log/messages as the crash happens.
Noteworthy entries from another crash are: Aug 9 20:59:31 fedora duplicati-server[265988]: #9 0x00007f93c6e37576 in __assert_fail () from /lib64/libc.so.6 Aug 9 20:59:31 fedora duplicati-server[265988]: #10 0x00007f93c6e902b0 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 Aug 9 20:59:31 fedora duplicati-server[265988]: #11 0x00007f93c71c6736 in sss_nss_mc_get_ctx () from /lib64/libnss_sss.so.2 Aug 9 20:59:31 fedora duplicati-server[265988]: #12 0x00007f93c71c71fe in sss_nss_mc_getpwuid () from /lib64/libnss_sss.so.2 Aug 9 20:59:31 fedora duplicati-server[265988]: #13 0x00007f93c71c9036 in _nss_sss_getpwuid_r () from /lib64/libnss_sss.so.2 Aug 9 20:59:31 fedora duplicati-server[265988]: #14 0x00007f93c6edc631 in getpwuid_r@@GLIBC_2.2.5 () from /lib64/libc.so.6
Expected results:
It should work as it did before updating the sssd suite.
Additional info: See the discussion at https://forum.duplicati.com/t/suddenly-started-crashing-mono-sgen-pthread-mu...
https://bugzilla.redhat.com/show_bug.cgi?id=2120680
Alexey Tikhonov atikhono@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CLOSED Doc Type|--- |If docs needed, set a value Resolution|--- |DUPLICATE Last Closed| |2022-08-23 14:26:26
--- Comment #1 from Alexey Tikhonov atikhono@redhat.com --- Hi,
I think this is a dulicate of bz 2111582. Fixed upstream, should be fixed in Fedora soon.
*** This bug has been marked as a duplicate of bug 2111582 ***
sssd-maintainers@lists.fedoraproject.org