Segfault trigged by "password must change"

[Thomas Hood]

Running samba4 4.0.0~alpha18.dfsg1-4ubuntu2 as domain controller under
Ubuntu 12.04, every time a user tries to log in when her password has
expired a segfault occurs.  Here's a backtrace.  Please let me know if
this has been fixed in later releases --- I didn't see anything
relevant in release notes --- or let me know what additional
information you might need to help find the bug.


  sam_account_ok: Account for user 'foo at BAR' password must change!.
*** glibc detected *** samba: free(): invalid pointer: 0x00000000011432d0 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7e626)[0x7fe3f0a24626]
/usr/lib/x86_64-linux-gnu/libasn1.so.8(der_free_octet_string+0xd)[0x7fe3eb621e7d]
/usr/lib/x86_64-linux-gnu/libasn1.so.8(free_METHOD_DATA+0x24)[0x7fe3eb5e6d04]
/usr/lib/x86_64-linux-gnu/libkdc.so.2(+0x10e3d)[0x7fe3e6ea5e3d]
/usr/lib/x86_64-linux-gnu/libkdc.so.2(+0x1c233)[0x7fe3e6eb1233]
/usr/lib/x86_64-linux-gnu/libkdc.so.2(krb5_kdc_process_krb5_request+0x88)[0x7fe3e6eb1428]
/usr/lib/x86_64-linux-gnu/samba//service/kdc.so(+0x4c5e)[0x7fe3e76e7c5e]
/usr/lib/x86_64-linux-gnu/samba//service/kdc.so(+0x5aa8)[0x7fe3e76e8aa8]
/usr/lib/x86_64-linux-gnu/samba/libsamba-sockets.so(+0xa982)[0x7fe3ee516982]
/usr/lib/x86_64-linux-gnu/samba/libsamba-sockets.so(+0xde60)[0x7fe3ee519e60]
/usr/lib/x86_64-linux-gnu/samba/libsamba-sockets.so(+0xd567)[0x7fe3ee519567]
/usr/lib/x86_64-linux-gnu/libtevent.so.0(+0x64d8)[0x7fe3f0d694d8]
/usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x90)[0x7fe3f0d66620]
/usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b)[0x7fe3f0d667ab]
/usr/lib/x86_64-linux-gnu/samba//process_model/standard.so(+0x14f4)[0x7fe3e8eae4f4]
/usr/lib/x86_64-linux-gnu/samba/libservice.so(task_server_startup+0x8e)[0x7fe3f3bdf72b]
/usr/lib/x86_64-linux-gnu/samba/libservice.so(+0x2c2a)[0x7fe3f3bddc2a]
/usr/lib/x86_64-linux-gnu/samba/libservice.so(server_service_startup+0x11f)[0x7fe3f3bddd64]
samba[0x40b436]
samba(main+0x24)[0x40b505]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fe3f09c776d]
samba[0x405689]

-- 
Thomas Hood