• [6.9.1] Time Machine no longer works after upgrading from 6.8.3 - Bad talloc magic value - unknown value

    sit_rp

    By sit_rp

      • Solved Urgent

    Hello,

     

    I upgraded to 6.9.1 today and Time Machine backups stopped working. SMB dumps core everytime Time Machine backup runs. This share is located on external USB drive mounted with Unassigned Devices plugin.
    Worked fine for the last several months, and literally stopped working right after this upgrade. Attached is diagnostics file, along with log entrties.

     

     

    Mar 28 13:38:49 Tower smbd[4208]: [2021/03/28 13:38:49.016583, 0] ../../source3/lib/popt_common.c:68(popt_s3_talloc_log_fn)
    Mar 28 13:38:49 Tower smbd[4208]: Bad talloc magic value - unknown value
    Mar 28 13:38:49 Tower smbd[4208]: [2021/03/28 13:38:49.016621, 0] ../../source3/lib/util.c:829(smb_panic_s3)
    Mar 28 13:38:49 Tower smbd[4208]: PANIC (pid 4208): Bad talloc magic value - unknown value
    Mar 28 13:38:49 Tower smbd[4208]: [2021/03/28 13:38:49.016681, 0] ../../lib/util/fault.c:222(log_stack_trace)
    Mar 28 13:38:49 Tower smbd[4208]: BACKTRACE:
    Mar 28 13:38:49 Tower smbd[4208]: #0 log_stack_trace + 0x39 [ip=0x1543c9cf8249] [sp=0x7ffc451e7670]
    Mar 28 13:38:49 Tower smbd[4208]: #1 smb_panic_s3 + 0x23 [ip=0x1543c9907d43] [sp=0x7ffc451e7fb0]
    Mar 28 13:38:49 Tower smbd[4208]: #2 smb_panic + 0x2f [ip=0x1543c9cf845f] [sp=0x7ffc451e7fd0]
    Mar 28 13:38:49 Tower smbd[4208]: #3 <unknown symbol> [ip=0x1543c9131497] [sp=0x7ffc451e80e0]
    Mar 28 13:38:49 Tower smbd[4208]: #4 get_share_mode_lock + 0x32d [ip=0x1543c99f373d] [sp=0x7ffc451e8110]
    Mar 28 13:38:49 Tower smbd[4208]: #5 smbd_contend_level2_oplocks_begin + 0xd1 [ip=0x1543c9aaea11] [sp=0x7ffc451e8170]
    Mar 28 13:38:49 Tower smbd[4208]: #6 brl_lock + 0x563 [ip=0x1543c99ebb33] [sp=0x7ffc451e8240]
    Mar 28 13:38:49 Tower smbd[4208]: #7 rpc_winreg_shutdown + 0xbe [ip=0x1543c99e804e] [sp=0x7ffc451e8310]
    Mar 28 13:38:49 Tower smbd[4208]: #8 release_posix_lock_posix_flavour + 0x1cd7 [ip=0x1543c99f1b07] [sp=0x7ffc451e83a0]
    Mar 28 13:38:49 Tower smbd[4208]: #9 db_open + 0xbae [ip=0x1543c992055e] [sp=0x7ffc451e83d0]
    Mar 28 13:38:49 Tower smbd[4208]: #10 db_open_rbt + 0x7dd [ip=0x1543c85a0a9d] [sp=0x7ffc451e8460]
    Mar 28 13:38:49 Tower smbd[4208]: #11 dbwrap_do_locked + 0x5d [ip=0x1543c859e31d] [sp=0x7ffc451e8510]
    Mar 28 13:38:49 Tower smbd[4208]: #12 db_open + 0x67e [ip=0x1543c992002e] [sp=0x7ffc451e8560]
    Mar 28 13:38:49 Tower smbd[4208]: #13 dbwrap_do_locked + 0x5d [ip=0x1543c859e31d] [sp=0x7ffc451e85e0]
    Mar 28 13:38:49 Tower smbd[4208]: #14 share_mode_do_locked + 0xe2 [ip=0x1543c99f3b42] [sp=0x7ffc451e8630]
    Mar 28 13:38:49 Tower smbd[4208]: #15 do_lock + 0x128 [ip=0x1543c99e8ce8] [sp=0x7ffc451e8680]
    Mar 28 13:38:49 Tower smbd[4208]: #16 afpinfo_unpack + 0x6e31 [ip=0x1543c48c7241] [sp=0x7ffc451e8770]
    Mar 28 13:38:49 Tower smbd[4208]: #17 smbd_smb2_request_process_create + 0xb15 [ip=0x1543c9a8c155] [sp=0x7ffc451e8880]
    Mar 28 13:38:49 Tower smbd[4208]: #18 smbd_smb2_request_dispatch + 0xd3e [ip=0x1543c9a8377e] [sp=0x7ffc451e89e0]
    Mar 28 13:38:49 Tower smbd[4208]: #19 smbd_smb2_request_dispatch_immediate + 0x730 [ip=0x1543c9a84490] [sp=0x7ffc451e8a70]
    Mar 28 13:38:49 Tower smbd[4208]: #20 tevent_common_invoke_fd_handler + 0x7d [ip=0x1543c914970d] [sp=0x7ffc451e8ae0]
    Mar 28 13:38:49 Tower smbd[4208]: #21 tevent_wakeup_recv + 0x1097 [ip=0x1543c914fa77] [sp=0x7ffc451e8b10]
    Mar 28 13:38:49 Tower smbd[4208]: #22 tevent_cleanup_pending_signal_handlers + 0xb7 [ip=0x1543c914dc07] [sp=0x7ffc451e8b70]
    Mar 28 13:38:49 Tower smbd[4208]: #23 _tevent_loop_once + 0x94 [ip=0x1543c9148df4] [sp=0x7ffc451e8b90]
    Mar 28 13:38:49 Tower smbd[4208]: #24 tevent_common_loop_wait + 0x1b [ip=0x1543c914909b] [sp=0x7ffc451e8bc0]
    Mar 28 13:38:49 Tower smbd[4208]: #25 tevent_cleanup_pending_signal_handlers + 0x57 [ip=0x1543c914dba7] [sp=0x7ffc451e8be0]
    Mar 28 13:38:49 Tower smbd[4208]: #26 smbd_process + 0x7a7 [ip=0x1543c9a738a7] [sp=0x7ffc451e8c00]
    Mar 28 13:38:49 Tower smbd[4208]: #27 samba_tevent_glib_glue_create + 0x2291 [ip=0x5616838485e1] [sp=0x7ffc451e8c90]
    Mar 28 13:38:49 Tower smbd[4208]: #28 tevent_common_invoke_fd_handler + 0x7d [ip=0x1543c914970d] [sp=0x7ffc451e8d60]
    Mar 28 13:38:49 Tower smbd[4208]: #29 tevent_wakeup_recv + 0x1097 [ip=0x1543c914fa77] [sp=0x7ffc451e8d90]
    Mar 28 13:38:49 Tower smbd[4208]: #30 tevent_cleanup_pending_signal_handlers + 0xb7 [ip=0x1543c914dc07] [sp=0x7ffc451e8df0]
    Mar 28 13:38:49 Tower smbd[4208]: #31 _tevent_loop_once + 0x94 [ip=0x1543c9148df4] [sp=0x7ffc451e8e10]
    Mar 28 13:38:49 Tower smbd[4208]: #32 tevent_common_loop_wait + 0x1b [ip=0x1543c914909b] [sp=0x7ffc451e8e40]
    Mar 28 13:38:49 Tower smbd[4208]: #33 tevent_cleanup_pending_signal_handlers + 0x57 [ip=0x1543c914dba7] [sp=0x7ffc451e8e60]
    Mar 28 13:38:49 Tower smbd[4208]: #34 main + 0x1b2f [ip=0x561683844c1f] [sp=0x7ffc451e8e80]
    Mar 28 13:38:49 Tower smbd[4208]: #35 __libc_start_main + 0xeb [ip=0x1543c8e0ee6b] [sp=0x7ffc451e9230]
    Mar 28 13:38:49 Tower smbd[4208]: #36 _start + 0x2a [ip=0x561683844ffa] [sp=0x7ffc451e92f0]
    Mar 28 13:38:49 Tower smbd[4208]: [2021/03/28 13:38:49.030974, 0] ../../source3/lib/dumpcore.c:315(dump_core)
    Mar 28 13:38:49 Tower smbd[4208]: dumping core in /var/log/samba/cores/smbd

    tower-diagnostics-20210328-1346.zip

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    sit_rp

    Here is my Samba config.

     

     

    [Time Machine]     
       ea support = Yes
       path = /mnt/disks/WD4TBPASSPORT/Time_Machine
       vfs objects = catia fruit streams_xattr
       valid users = timemachine
       write list = timemachine
       fruit:time machine max size = 3500 G
       fruit:encoding = native
       fruit:locking = netatalk
       fruit:metadata = netatalk
       fruit:resource = file
       fruit:time machine = yes
       fruit:advertise_fullsync = true
       durable handles = yes
       kernel oplocks = no
       kernel share modes = no
       posix locking = no
       inherit acls = yes

    #disable SMB1 for security reasons
    [global]
       min protocol = SMB2

    #unassigned_devices_start
    #Unassigned devices share includes
       include = /tmp/unassigned.devices/smb-settings.conf
    #unassigned_devices_end

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    sit_rp

    Changed Status to Retest

     

    Came cross Samba bug below:

     

    https://bugzilla.samba.org/show_bug.cgi?id=14392

     

    1) Stopped the array.

    2) Removed optional "fruit:locking=netatalk" config line.

    3) Restarted the array.

     

    Backup is running now for the first time since upgrade to 6.9.1

     

    I will keep monitoring for now to see if there are any issues with not having that extra config line.

    Edited by sit_rp
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