The Samba 'panic action' script, /usr/share/samba/panic-action,
was called for pid 4091 (/usr/sbin/winbindd).

Below is a backtrace for this process generated with gdb, which shows
the state of the program at the time the error occurred.

If the problem persists, you are encouraged to first install the
samba-dbg package which contains the debugging symbols for samba
binaries. Then submit the provided information as a bug report to Debian.
For information about the procedure for submitting bug reports , please see
http://www.debian.org/Bugs/Reporting or the reportbug(1) manpage.

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Using host libthread_db library "/lib/tls/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1480661312 (LWP 4091)]
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0xa7d8f7be in waitpid () from /lib/tls/libc.so.6
#0 0xa7d8f7be in waitpid () from /lib/tls/libc.so.6
#1 0xa7d37699 in strtold_l () from /lib/tls/libc.so.6
#2 0x080e7207 in smb_panic2 ()
#3 0x080e733a in smb_panic ()
#4 0x0807b81c in init_domain_list ()
#5 0x08074a22 in main ()