Comment 3 for bug 480849

I am sorry for the misleading term "crashes" in the titel, but I didn't find any better expression while writing the bug report. samba does not crash/segfault, rather it raises the CPU load to 100%. Don't know how to call this.

Today I tested several file sizes and stopped at about 3500MB. It seems that there is no static border as a file with this size works in some case and it several others, it does not work and causes the above described problem. If a file is below this threshold, the probability is very high that the transmission will work.

I also raised the log level in samba to see what happens within samba and found the following:

[2009/11/12 21:00:24, 0] lib/util_sock.c:730(write_data)
[2009/11/12 21:00:24, 0] lib/util_sock.c:1468(get_peer_addr_internal)
  getpeername failed. Error was Transport endpoint is not connected
  write_data: write failure in writing to client 0.0.0.0. Error Connection reset by peer
[2009/11/12 21:00:24, 0] smbd/process.c:62(srv_send_smb)
  Error writing 62 bytes to client. -1. (Transport endpoint is not connected)
[2009/11/12 21:00:24, 0] lib/util_sock.c:730(write_data)
[2009/11/12 21:00:24, 0] lib/util_sock.c:1468(get_peer_addr_internal)
  getpeername failed. Error was Transport endpoint is not connected
  write_data: write failure in writing to client 0.0.0.0. Error Broken pipe
[2009/11/12 21:00:24, 0] smbd/process.c:62(srv_send_smb)
  Error writing 104 bytes to client. -1. (Transport endpoint is not connected)
[2009/11/12 21:00:24, 0] lib/util_sock.c:1468(get_peer_addr_internal)
  getpeername failed. Error was Transport endpoint is not connected
[2009/11/12 21:00:24, 0] lib/util_sock.c:730(write_data)
[2009/11/12 21:00:24, 0] lib/util_sock.c:1468(get_peer_addr_internal)
  getpeername failed. Error was Transport endpoint is not connected
  write_data: write failure in writing to client 0.0.0.0. Error Broken pipe
[2009/11/12 21:00:24, 0] smbd/process.c:62(srv_send_smb)
  Error writing 60 bytes to client. -1. (Transport endpoint is not connected)
[2009/11/12 21:00:24, 0] lib/util_sock.c:730(write_data)
[2009/11/12 21:00:24, 0] lib/util_sock.c:1468(get_peer_addr_internal)
  getpeername failed. Error was Transport endpoint is not connected
  write_data: write failure in writing to client 0.0.0.0. Error Broken pipe
[2009/11/12 21:00:24, 0] smbd/process.c:62(srv_send_smb)
  Error writing 53 bytes to client. -1. (Transport endpoint is not connected)
[2009/11/12 21:00:24, 2] smbd/close.c:612(close_normal_file)
  christoph closed file large.001 (numopen=0) NT_STATUS_OK