Bug 8312 - Receiving SMB: Server stopped responding Invalid packet length! (96361 bytes).
Receiving SMB: Server stopped responding Invalid packet length! (96361 bytes).
Status: NEW
Product: Samba 3.5
Classification: Unclassified
Component: Client Tools
3.5.9
x64 Linux
: P5 normal
: ---
Assigned To: Volker Lendecke
Samba QA Contact
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2011-07-20 19:28 UTC by sean o'malley
Modified: 2011-09-08 20:26 UTC (History)
0 users

See Also:


Attachments
the core file for the last message from centos6 x64 (1.14 MB, application/octet-stream)
2011-09-08 20:26 UTC, sean o'malley
no flags Details

Note You need to log in before you can comment on or make changes to this bug.
Description sean o'malley 2011-07-20 19:28:59 UTC
On centos 5.5/x64 (but i this also happens on solaris and probably everything else too.)

./configure --prefix=/usr/local/samba --with-pam --without-ldap --without-krb5

[root@localhost source3]# smbclient //localhost/homes -U omalleys
Enter omalleys's password: 
Invalid packet length! (96361 bytes).
Receiving SMB: Server stopped responding
session request to LOCALHOST failed (Read error: Success)
Invalid packet length! (96361 bytes).
Receiving SMB: Server stopped responding
session request to *SMBSERVER failed (Read error: Success)
[root@localhost source3]# 

I think it has to do with the large readx and writex and the packet checking not returning the correct error.
Comment 1 sean o'malley 2011-07-20 19:47:22 UTC
I forgot to add I was running this on port 139 via xinetd.
Comment 2 Jeremy Allison 2011-07-20 21:11:36 UTC
Not seeing this with smbd run normally (no xinetd). Can you test your binary run without xinetd and see if you still get the problem ?

Jeremy.
Comment 3 sean o'malley 2011-07-22 20:17:15 UTC
Sorry for the delay. 
It didnt crash but it had permission denied when I ran it as a server. This maybe a configuration on my end. I swear I had this working earlier but it may have been the 3.4 series. 

I also noticed I forgot to take --interactive out when I was running with xinetd, and it still didnt work after I removed it. 

It may also be a 64-bit issue, i noticed a cast to  (unsigned long)len)); in NTSTATUS receive_smb_raw() in "lib/util_sock.c" line 789
and in static bool valid_packet_size() "smbd/process.c" line 131

I'm on vacation next week with extremely limited network connectivity.
Comment 4 sean o'malley 2011-09-08 20:22:24 UTC
Alright I got back to this. :) 

i think this might be a 64-bit error. I need to check a couple of more things, but i compiled 3.4.15 on a centos6 i686 machine and it seemed to work just fine without crashing with initial testing.

On the 64-bit centos6 3.4.15 I am getting: 
<snip> 
[2011/09/08 16:11:39, 10] lib/system_smbd.c:122(sys_getgrouplist)
  sys_getgrouplist: user [omalleys]
[2011/09/08 16:11:39, 10] lib/gencache.c:194(gencache_get)
  Cache entry with key = IDMAP/GID2SID/500 couldn't be found
[2011/09/08 16:11:39,  5] passdb/lookup_sid.c:1378(gid_to_sid)
  gid_to_sid: winbind failed to find a sid for gid 500
[2011/09/08 16:11:39,  3] smbd/sec_ctx.c:210(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2011/09/08 16:11:39,  3] smbd/uid.c:428(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2011/09/08 16:11:39,  3] smbd/sec_ctx.c:310(set_sec_ctx)
  setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
[2011/09/08 16:11:39,  5] auth/token_util.c:522(debug_nt_user_token)
  NT user token: (NULL)
[2011/09/08 16:11:39,  5] auth/token_util.c:548(debug_unix_user_token)
  UNIX token of user 0
  Primary group is 0 and contains 0 supplementary groups
[2011/09/08 16:11:39,  3] smbd/sec_ctx.c:418(pop_sec_ctx)
  pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
[2011/09/08 16:11:39, 10] passdb/lookup_sid.c:1173(legacy_gid_to_sid)
  LEGACY: gid 500 -> sid S-1-22-2-500
[2011/09/08 16:11:39, 10] passdb/lookup_sid.c:69(lookup_name)
  lookup_name: Unix User\omalleys => Unix User (domain), omalleys (name)
[2011/09/08 16:11:39, 10] passdb/lookup_sid.c:70(lookup_name)
  lookup_name: flags = 0x073
[2011/09/08 16:11:39,  3] auth/auth.c:271(check_ntlm_password)
  check_ntlm_password: unix authentication for user [omalleys] succeeded
[2011/09/08 16:11:39,  5] auth/auth.c:284(check_ntlm_password)
[2011/09/08 16:11:39,  0] lib/fault.c:46(fault_report)
  ===============================================================
[2011/09/08 16:11:39,  0] lib/fault.c:47(fault_report)
  INTERNAL ERROR: Signal 11 in pid 27107 (3.4.15)
  Please read the Trouble-Shooting section of the Samba3-HOWTO
[2011/09/08 16:11:39,  0] lib/fault.c:49(fault_report)
  
  From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2011/09/08 16:11:39,  0] lib/fault.c:50(fault_report)
  ===============================================================
[2011/09/08 16:11:39,  0] lib/util.c:1480(smb_panic)
  PANIC (pid 27107): internal error
[2011/09/08 16:11:39,  0] lib/util.c:1584(log_stack_trace)
  BACKTRACE: 17 stack frames:
   #0 smbd(log_stack_trace+0x1c) [0x7f016c9dd54f]
   #1 smbd(smb_panic+0x55) [0x7f016c9dd651]
   #2 smbd(+0x2ad839) [0x7f016c9ce839]
   #3 /lib64/libc.so.6(+0x32a20) [0x7f016b116a20]
   #4 /lib64/libc.so.6(_IO_vfprintf+0x3cf7) [0x7f016b12bff7]
   #5 /lib64/libc.so.6(vasprintf+0xba) [0x7f016b152c3a]
   #6 smbd(dbgtext+0xa2) [0x7f016c9cd0f0]
   #7 smbd(+0x2f97bc) [0x7f016ca1a7bc]
   #8 smbd(reply_sesssetup_and_X+0xc6b) [0x7f016c804a41]
   #9 smbd(+0x11253f) [0x7f016c83353f]
   #10 smbd(+0x114564) [0x7f016c835564]
   #11 smbd(+0x114cca) [0x7f016c835cca]
   #12 smbd(run_events+0x132) [0x7f016c9ebc35]
   #13 smbd(smbd_process+0x76d) [0x7f016c83531b]
   #14 smbd(main+0xa86) [0x7f016cc34c9d]
   #15 /lib64/libc.so.6(__libc_start_main+0xfd) [0x7f016b102c5d]
   #16 smbd(+0xa3f09) [0x7f016c7c4f09]
[2011/09/08 16:11:39,  0] lib/fault.c:326(dump_core)
  dumping core in /usr/local/samba/var/cores/smbd
Comment 5 sean o'malley 2011-09-08 20:26:11 UTC
Created attachment 6870 [details]
the core file for the last message from centos6 x64