Smbd service crashes after mount from Debian 8

Hi there,

I've just migrated from CentOS 7.6 to Oracle Linux 8.3 and experience the following problem when I mount a share on this new OL8-installation from a Debian 8.11 client:

1. The smbd service crashes but continues to run. The info from /var/log/messages is:
Quote:

systemd-coredump[65219]: Process 65196 (smbd) of user 0 dumped core.#012#012Stack trace of thread 65196:#012#0 0x00007effa2a5480f raise (libc.so.6)#012#1 0x00007effa2a3ec45 abort (libc.so.6)#012#2 0x00007effa3c6d074 dump_core (libsmbconf.so.0)#012#3 0x00007effa3c7c67c smb_panic_s3 (libsmbconf.so.0)#012#4 0x00007effa4221361 smb_panic (/usr/lib64/libsamba-util.so.0.0.1)#012#5 0x00007effa3e92fff assert_no_pending_aio.isra.1 (libsmbd-base-samba4.so)#012#6 0x00007effa3e93998 close_file (libsmbd-base-samba4.so)#012#7 0x00007effa3e2eacd file_close_user (libsmbd-base-samba4.so)#012#8 0x00007effa3edd1e1 smbXsrv_session_logoff (libsmbd-base-samba4.so)#012#9 0x00007effa3edd58a smbXsrv_session_logoff_all_callback (libsmbd-base-samba4.so)#012#10 0x00007effa1da10c4 db_rbt_traverse_internal (libdbwrap-samba4.so)#012#11 0x00007effa1da12fe db_rbt_traverse (libdbwrap-samba4.so)#012#12 0x00007effa1d9f85b dbwrap_traverse (libdbwrap-samba4.so)#012#13 0x00007effa3edd74b smbXsrv_session_logoff_all (libsmbd-base-samba4.so)#012#14 0x00007effa3ee2e5e exit_server_common (libsmbd-base-samba4.so)#012#15 0x00007effa3ee33c4 smbd_exit_server_cleanly (libsmbd-base-samba4.so)#012#16 0x00007effa3681a38 exit_server_cleanly (libsmbd-shim-samba4.so)#012#17 0x00007effa3ebdd12 smbd_server_connection_terminate_ex (libsmbd-base-samba4.so)#012#18 0x00007effa3ec1d19 smbd_smb2_connection_handler (libsmbd-base-samba4.so)#012#19 0x00007effa3007533 tevent_common_invoke_fd_handler (libtevent.so.0)#012#20 0x00007effa300dacf epoll_event_loop_once (libtevent.so.0)#012#21 0x00007effa300badb std_event_loop_once (libtevent.so.0)#012#22 0x00007effa3006c05 _tevent_loop_once (libtevent.so.0)#012#23 0x00007effa3006eab tevent_common_loop_wait (libtevent.so.0)#012#24 0x00007effa300ba6b std_event_loop_wait (libtevent.so.0)#012#25 0x00007effa3eb00ef smbd_process (libsmbd-base-samba4.so)#012#26 0x0000563c141efd20 smbd_accept_connection (smbd)#012#27 0x00007effa3007533 tevent_common_invoke_fd_handler (libtevent.so.0)#012#28 0x00007effa300dacf epoll_event_loop_once (libtevent.so.0)#012#29 0x00007effa300badb std_event_loop_once (libtevent.so.0)#012#30 0x00007effa3006c05 _tevent_loop_once (libtevent.so.0)#012#31 0x00007effa3006eab tevent_common_loop_wait (libtevent.so.0)#012#32 0x00007effa300ba6b std_event_loop_wait (libtevent.so.0)#012#33 0x0000563c141ea2c2 main (smbd)#012#34 0x00007effa2a407c3 __libc_start_main (libc.so.6)#012#35 0x0000563c141ea67e _start (smbd)#012#012Stack trace of thread 65203:#012#0 0x00007effa2dee65a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)#012#1 0x00007effa1d657d4 pthreadpool_server (libmessages-dgm-samba4.so)#012#2 0x00007effa2de815a start_thread (libpthread.so.0)#012#3 0x00007effa2b19f43 __clone (libc.so.6)#012#012Stack trace of thread 65202:#012#0 0x00007effa2dee65a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)#012#1 0x00007effa1d657d4 pthreadpool_server (libmessages-dgm-samba4.so)#012#2 0x00007effa2de815a start_thread (libpthread.so.0)#012#3 0x00007effa2b19f43 __clone (libc.so.6)

2. On the Debian client I experience a strange behavior: it is reproducable that when I copy & paste a folder within the samba share with a file manager like nemo, and I delete this new folder, after a refresh, it appears again! Only if I delete the folder from command line, I can get rid of it. This happens not only for newly created folders, but can be reproduced with it. For other folders, sometimes they stay deleted, sometimes they "come back".

I connect with the following line in /etc/fstab:
Code://192.168.0.1/share /home/user/share cifs vers=3.0,noserverino,iocharset=utf8,noperm,file_mode=0777,dir_mode=0777,credentials=/root/.cifscred 0 0192.168.0.1 is my OL8 server, of course.

Thanks,
SH