Hi Andy, <br>here is an error report with SEGV by an ALICE site happening in the protocol handler of xrootd v 3.0.2. <br>Looks like the &#39;protocol data length error&#39; triggered some bug in object cleanup or consistency.<br>
Was there anything changed for 3.0.3?<br><br>Cheers Andreas.<br><br>===========================================================================================<br>xrootd log:<br><br>
110417 11:51:15 11354 <a href="mailto:[log in to unmask]">alicesgm.16004:<a href="/cgi-bin/wa?LOGON=A3%3Dind1104%26L%3DXROOTD-DEV%26E%3Dquoted-printable%26P%3D208598%26B%3D--0016e65b40e058e27b04a12cf164%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a> ofs_open: 200-40664 fn=/13/13603/cae65732-68cf-11e0-bc47-001cc45cb5dc<br>
110417 11:56:51 11354 XrootdXeq: <a href="mailto:[log in to unmask]">alicesgm.16004:<a href="/cgi-bin/wa?LOGON=A3%3Dind1104%26L%3DXROOTD-DEV%26E%3Dquoted-printable%26P%3D208598%26B%3D--0016e65b40e058e27b04a12cf164%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a> disc 0:05:36 (protocol data length error)<br>
110417 11:56:51 11354 <a href="mailto:[log in to unmask]">alicesgm.16004:<a href="/cgi-bin/wa?LOGON=A3%3Dind1104%26L%3DXROOTD-DEV%26E%3Dquoted-printable%26P%3D208598%26B%3D--0016e65b40e058e27b04a12cf164%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a> ofs_close: use=1 fn=/13/13603/cae65732-68cf-11e0-bc47-001cc45cb5dc<br>
110417 11:56:51 11354 XrdLink: client closed socket polling <a href="mailto:[log in to unmask]">alicesgm.16004:<a href="/cgi-bin/wa?LOGON=A3%3Dind1104%26L%3DXROOTD-DEV%26E%3Dquoted-printable%26P%3D208598%26B%3D--0016e65b40e058e27b04a12cf164%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a><br><br>Stack Trace:<br>===========================================================================================<br>
Thread 1 (Thread 11362):<br>#0  0x0000003d91408db0 in pthread_mutex_lock () from /lib64/libpthread.so.0<br>No symbol table info available.<br>
#1  0x0000000000436088 in Lock (this=0x0, text=0x47256d &quot;link read error&quot;) at ../../src/XrdSys/XrdSysPthread.hh:132<br>No locals.<br>#2  XrdLink::setEtext (this=0x0, text=0x47256d &quot;link read error&quot;) at XrdLink.cc:914<br>

No locals.<br>#3  0x0000000000434fc3 in XrdXrootdProtocol::aio_WriteAll (this=0x7fc4e0005510) at XrdXrootdXeqAio.cc:177<br>        aiop = 0x7fc51000ad98<br>        Quantum = 262144<br>        rc = 0<br>#4  0x00000000004344b2 in XrdXrootdProtocol::do_Write (this=0x7fc4e0005510) at XrdXrootdXeq.cc:2118<br>

        retc = &lt;value optimized out&gt;<br>        pathID = 0<br>#5  0x0000000000438519 in XrdLink::DoIt (this=0x110a8b8) at XrdLink.cc:419<br>        rc = &lt;value optimized out&gt;<br>#6  0x000000000043c04f in XrdScheduler::Run (this=0x68ee60) at XrdScheduler.cc:292<br>

        waiting = &lt;value optimized out&gt;<br>        jp = 0x110a8b8<br>#7  0x000000000043c219 in XrdStartWorking (carg=&lt;value optimized out&gt;) at XrdScheduler.cc:73<br>        sp = &lt;value optimized out&gt;<br>

#8  0x000000000046ff46 in XrdSysThread_Xeq (myargs=0x10d9070) at XrdSysPthread.cc:87<br>        ap = 0x10d9070<br>        myNum = &lt;value optimized out&gt;<br>        retc = &lt;value optimized out&gt;<br><br><br>