[Bug 1670304] [NEW] Samba smbd [4.3.11-Ubuntu] segfault? 'panic action' backtrace

[d65]

Public bug reported:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fdfb2c16a0c in __libc_waitpid (pid=1277, stat_loc=stat_loc at entry=0x7ffd84cb5010, options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
#0  0x00007fdfb2c16a0c in __libc_waitpid (pid=1277, stat_loc=stat_loc at entry=0x7ffd84cb5010, options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
#1  0x00007fdfb2b9c232 in do_system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at ../sysdeps/posix/system.c:148
#2  0x00007fdfb2b9c59a in __libc_system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at ../sysdeps/posix/system.c:184
#3  0x00007fdfb6606225 in system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at pt-system.c:28
#4  0x00007fdfb5631271 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:802
#5  0x00007fdfb63a88df in smb_panic (why=why at entry=0x55d15eedc2b4 "open_sockets_smbd() failed") at ../lib/util/fault.c:166
#6  0x00007fdfb5faba55 in exit_server_common (how=how at entry=SERVER_EXIT_ABNORMAL, reason=0x55d15eedc2b4 "open_sockets_smbd() failed") at ../source3/smbd/server_exit.c:246
#7  0x00007fdfb5fabd31 in smbd_exit_server (explanation=<optimized out>) at ../source3/smbd/server_exit.c:264
#8  0x00007fdfb3e89c82 in exit_server (reason=<optimized out>) at ../source3/lib/smbd_shim.c:123
#9  0x000055d15eed6243 in main (argc=<optimized out>, argv=<optimized out>) at ../source3/smbd/server.c:1630
A debugging session is active.

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Samba smbd [4.3.11-Ubuntu] segfault? 'panic action' backtrace

Status in samba package in Ubuntu:
  New

Bug description:
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
  0x00007fdfb2c16a0c in __libc_waitpid (pid=1277, stat_loc=stat_loc at entry=0x7ffd84cb5010, options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
  #0  0x00007fdfb2c16a0c in __libc_waitpid (pid=1277, stat_loc=stat_loc at entry=0x7ffd84cb5010, options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
  #1  0x00007fdfb2b9c232 in do_system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at ../sysdeps/posix/system.c:148
  #2  0x00007fdfb2b9c59a in __libc_system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at ../sysdeps/posix/system.c:184
  #3  0x00007fdfb6606225 in system (line=line at entry=0x55d1604fffa0 "/usr/share/samba/panic-action 991") at pt-system.c:28
  #4  0x00007fdfb5631271 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:802
  #5  0x00007fdfb63a88df in smb_panic (why=why at entry=0x55d15eedc2b4 "open_sockets_smbd() failed") at ../lib/util/fault.c:166
  #6  0x00007fdfb5faba55 in exit_server_common (how=how at entry=SERVER_EXIT_ABNORMAL, reason=0x55d15eedc2b4 "open_sockets_smbd() failed") at ../source3/smbd/server_exit.c:246
  #7  0x00007fdfb5fabd31 in smbd_exit_server (explanation=<optimized out>) at ../source3/smbd/server_exit.c:264
  #8  0x00007fdfb3e89c82 in exit_server (reason=<optimized out>) at ../source3/lib/smbd_shim.c:123
  #9  0x000055d15eed6243 in main (argc=<optimized out>, argv=<optimized out>) at ../source3/smbd/server.c:1630
  A debugging session is active.

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