Package: winbind Version: 2:4.9.5+dfsg-5+deb10u1 I have Samba running with LDAP backend. Machine was installed freshly with latest Buster, config copied and adapted from an old installation.
When running wbinfo -g, groups are listed as expected. When running wbinfo -u, the winbind process crashes in fill_domain_username_talloc, leaving the trace below with loglevel 10. I found this https://gitlab.com/samba-team/devel/samba/commit/1b39c563546aed677d0ac99b9fb8b44a5b48c1e4 when googling for my problem, might be related or not. [2020/03/25 11:00:24.946837, 10, pid=5567, effective(0, 0), real(0, 0), class=winbind] ../source3/winbindd/wb_query_user_list.c:77(wb_query_user_lis$ dcerpc_wbint_QueryUserList returned 201 users [2020/03/25 11:00:25.157159, 0] ../lib/util/fault.c:79(fault_report) =============================================================== [2020/03/25 11:00:25.157170, 0] ../lib/util/fault.c:80(fault_report) INTERNAL ERROR: Signal 11 in pid 5567 (4.9.5-Debian) Please read the Trouble-Shooting section of the Samba HOWTO [2020/03/25 11:00:25.157178, 0] ../lib/util/fault.c:82(fault_report) =============================================================== [2020/03/25 11:00:25.157183, 0] ../source3/lib/util.c:816(smb_panic_s3) PANIC (pid 5567): internal error [2020/03/25 11:00:25.157541, 0] ../lib/util/fault.c:261(log_stack_trace) BACKTRACE: 21 stack frames: #0 /lib/x86_64-linux-gnu/libsamba-util.so.0(log_stack_trace+0x32) [0x7f8ee09fb8d2] #1 /lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f8ee00351c0] #2 /lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7f8ee09fb9df] #3 /lib/x86_64-linux-gnu/libsamba-util.so.0(+0x24c16) [0x7f8ee09fbc16] #4 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12730) [0x7f8ee0d08730] #5 /usr/lib/x86_64-linux-gnu/samba/libsamba3-util.so.0(strlower_m+0x11) [0x7f8edff8f5a1] #6 /usr/sbin/winbindd(fill_domain_username_talloc+0x36) [0x5641735a4486] #7 /usr/sbin/winbindd(+0x68b4e) [0x5641735dcb4e] #8 /lib/x86_64-linux-gnu/libdcerpc-binding.so.0(+0x16431) [0x7f8ee0a6f431] #9 /usr/sbin/winbindd(+0x5970d) [0x5641735cd70d] #10 /usr/sbin/winbindd(+0x571ac) [0x5641735cb1ac] #11 /usr/sbin/winbindd(+0x552dd) [0x5641735c92dd] #12 /usr/sbin/winbindd(+0x81867) [0x5641735f5867] #13 /usr/sbin/winbindd(+0x810e6) [0x5641735f50e6] #14 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_invoke_fd_handler+0x7f) [0x7f8edfdc603f] #15 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd05f) [0x7f8edfdcc05f] #16 /lib/x86_64-linux-gnu/libtevent.so.0(+0xb2d7) [0x7f8edfdca2d7] #17 /lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x84) [0x7f8edfdc57e4] #18 /usr/sbin/winbindd(main+0xdc4) [0x56417359bc44] #19 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7f8edfc2209b] #20 /usr/sbin/winbindd(_start+0x2a) [0x56417359c1fa] [2020/03/25 11:00:25.157594, 0] ../source3/lib/util.c:828(smb_panic_s3) smb_panic(): calling panic action [/usr/share/samba/panic-action 5567] [2020/03/25 11:00:25.159620, 0] ../source3/lib/util.c:836(smb_panic_s3) smb_panic(): action returned status 0 [2020/03/25 11:00:25.159640, 0] ../source3/lib/dumpcore.c:315(dump_core)
