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[Brian Murray <brian@xxxxxxxxxx>]

** Changed in: samba (Ubuntu)
   Importance: Undecided => High

** Changed in: samba (Ubuntu)
     Assignee: (unassigned) => Ubuntu Server Team (ubuntu-server)

** Also affects: samba (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: samba (Ubuntu Xenial)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1622622

Title:
  connection loss, application crashes, unable to edit or open documents

Status in samba:
  Unknown
Status in samba package in Ubuntu:
  Confirmed
Status in samba source package in Xenial:
  New

Bug description:
  With 16.04 as a client and 14.04 as a server no file handling is
  possible. One can't open, delete or copy any file.

  This is an upstream bug and upstream patch solves the problem.

  [2016/09/12 11:02:08.650492,  0] ../source3/lib/popt_common.c:68(popt_s3_talloc_log_fn)
    talloc: access after free error - first free may be at ../source3/smbd/open.c:3248
  [2016/09/12 11:02:08.650654,  0] ../source3/lib/popt_common.c:68(popt_s3_talloc_log_fn)
    Bad talloc magic value - access after free
  [2016/09/12 11:02:08.650711,  0] ../source3/lib/util.c:789(smb_panic_s3)
    PANIC (pid 31253): Bad talloc magic value - access after free
  [2016/09/12 11:02:08.652528,  0] ../source3/lib/util.c:900(log_stack_trace)
    BACKTRACE: 37 stack frames:
     #0 /usr/lib/i386-linux-gnu/samba/libsmbregistry.so.0(log_stack_trace+0x29) [0xb738b459]
     #1 /usr/lib/i386-linux-gnu/samba/libsmbregistry.so.0(smb_panic_s3+0x28) [0xb738b558]
     #2 /usr/lib/i386-linux-gnu/libsamba-util.so.0(smb_panic+0x3a) [0xb7725cfa]
     #3 /usr/lib/i386-linux-gnu/libtalloc.so.2(+0x1ea3) [0xb6cbdea3]
     #4 /usr/lib/i386-linux-gnu/libtalloc.so.2(+0x158f) [0xb6cbd58f]
     #5 /usr/lib/i386-linux-gnu/libtalloc.so.2(_talloc_steal_loc+0xba) [0xb6cc406a]
     #6 /usr/lib/i386-linux-gnu/libtalloc.so.2(_talloc_move+0x30) [0xb6cc40c0]
     #7 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0x1a99cb) [0xb75659cb]
     #8 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0x1a9f08) [0xb7565f08]
     #9 /usr/lib/i386-linux-gnu/samba/libdbwrap.so.0(+0x59af) [0xb697d9af]
     #10 /usr/lib/i386-linux-gnu/libtdb.so.1(+0x8c7d) [0xb64fec7d]
     #11 /usr/lib/i386-linux-gnu/libtdb.so.1(tdb_parse_record+0x8b) [0xb64f960b]
     #12 /usr/lib/i386-linux-gnu/samba/libdbwrap.so.0(+0x5e62) [0xb697de62]
     #13 /usr/lib/i386-linux-gnu/samba/libdbwrap.so.0(dbwrap_parse_record+0x4a) [0xb697a80a]
     #14 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(fetch_share_mode_unlocked+0x88) [0xb7566dd8]
     #15 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(get_file_infos+0x75) [0xb755d6e5]
     #16 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0xe9799) [0xb74a5799]
     #17 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0xef4cb) [0xb74ab4cb]
     #18 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(reply_trans2+0x646) [0xb74ae906]
     #19 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0x121283) [0xb74dd283]
     #20 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0x12332d) [0xb74df32d]
     #21 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(+0x124e5f) [0xb74e0e5f]
     #22 /usr/lib/i386-linux-gnu/libsmbconf.so.0(run_events_poll+0x163) [0xb7064273]
     #23 /usr/lib/i386-linux-gnu/libsmbconf.so.0(+0x2352d) [0xb706452d]
     #24 /usr/lib/i386-linux-gnu/libtevent.so.0(_tevent_loop_once+0xa0) [0xb6caf2e0]
     #25 /usr/lib/i386-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x2c) [0xb6caf4dc]
     #26 /usr/lib/i386-linux-gnu/libtevent.so.0(_tevent_loop_wait+0x17) [0xb6caf577]
     #27 /usr/lib/i386-linux-gnu/samba/libsmbd-base.so.0(smbd_process+0x8b4) [0xb74e26e4]
     #28 smbd(+0x8b19) [0xb77c6b19]
     #29 /usr/lib/i386-linux-gnu/libsmbconf.so.0(run_events_poll+0x163) [0xb7064273]
     #30 /usr/lib/i386-linux-gnu/libsmbconf.so.0(+0x2352d) [0xb706452d]
     #31 /usr/lib/i386-linux-gnu/libtevent.so.0(_tevent_loop_once+0xa0) [0xb6caf2e0]
     #32 /usr/lib/i386-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x2c) [0xb6caf4dc]
     #33 /usr/lib/i386-linux-gnu/libtevent.so.0(_tevent_loop_wait+0x17) [0xb6caf577]
     #34 smbd(main+0x1b9e) [0xb77c424e]
     #35 /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0xb6b17a83]
     #36 smbd(+0x672e) [0xb77c472e]
  [2016/09/12 11:02:08.653508,  0] ../source3/lib/dumpcore.c:318(dump_core)
    dumping core in /var/log/samba/cores/smbd

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