"net ads join" crashes - Samba 4.1.x

[Youzhong Yang]

Hello all Samba gurus,

I am having an issue trying to run net join, it just crashes, can be
reproduced repeatedly:

# /samba/bin/net ads join createcomputer=LS/NonWindows -U yyang
Enter yyang's password:
talloc: access after free error - first free may be at
../lib/async_req/async_sock.c:371
Bad talloc magic value - access after free
PANIC (pid 18788): Bad talloc magic value - access after free
BACKTRACE: 25 stack frames:
 #0 /samba/lib/libsmbconf.so.0'log_stack_trace+0x1f [0xfffffd7fd602e268]
 #1 /samba/lib/libsmbconf.so.0'smb_panic_s3+0x6f [0xfffffd7fd602e0dc]
 #2 /samba/lib/libsamba-util.so.0.0.1'smb_panic+0x28 [0xfffffd7fd642857d]
 #3 /samba/lib/private/libtalloc.so.2.0.8'talloc_abort+0x45
[0xfffffd7fd5fd4733]
 #4
/samba/lib/private/libtalloc.so.2.0.8'talloc_abort_access_after_free+0x10
[0xfffffd7fd5fd47af]
 #5 /samba/lib/private/libtalloc.so.2.0.8'talloc_chunk_from_ptr+0x69
[0xfffffd7fd5fd482c]
 #6 /samba/lib/private/libtalloc.so.2.0.8'talloc_get_name+0x18
[0xfffffd7fd5fd62cf]
 #7 /samba/lib/private/libtalloc.so.2.0.8'talloc_check_name+0x33
[0xfffffd7fd5fd634f]
 #8 /samba/lib/private/libtevent.so.0.9.18'epoll_event_loop+0x1ab
[0xfffffd7fd61e010a]
 #9 /samba/lib/private/libtevent.so.0.9.18'epoll_event_loop_once+0x10e
[0xfffffd7fd61e0905]
 #10 /samba/lib/private/libtevent.so.0.9.18'std_event_loop_once+0x5c
[0xfffffd7fd61dd79a]
 #11 /samba/lib/private/libtevent.so.0.9.18'_tevent_loop_once+0xf9
[0xfffffd7fd61d7f68]
 #12 /samba/lib/private/libtevent.so.0.9.18'tevent_req_poll+0x25
[0xfffffd7fd61d9b4d]
 #13 /samba/lib/libtevent-util.so.0.0.1'tevent_req_poll_ntstatus+0x27
[0xfffffd7fd63c1cb0]
 #14 /samba/lib/private/liblibsmb.so'cli_full_connection+0xcc
[0xfffffd7fd510900c]
 #15 /samba/lib/libnetapi.so.0'libnet_join_connect_dc_ipc+0x9b
[0xfffffd7fd52634f3]
 #16 /samba/lib/libnetapi.so.0'libnet_join_lookup_dc_rpc+0x5a
[0xfffffd7fd526354f]
 #17 /samba/lib/libnetapi.so.0'libnet_DomainJoin+0x10c [0xfffffd7fd52660e2]
 #18 /samba/lib/libnetapi.so.0'libnet_Join+0x121 [0xfffffd7fd52665ee]
 #19 /samba/bin/net'net_ads_join+0x5fc [0x45d74a]
 #20 /samba/bin/net'net_run_function+0x9f [0x49ea95]
 #21 /samba/bin/net'net_ads+0x68 [0x460bde]
 #22 /samba/bin/net'net_run_function+0x9f [0x49ea95]
 #23 /samba/bin/net'main+0xcda [0x458b0e]
 #24 /samba/bin/net'_start+0x6c [0x438d2c]
Can not dump core: corepath not set up

It happens on samba 4.1.5 and 4.1.9, is this a known issue? has it been
fixed?

Thanks,
Youzhong Yang