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<P><FONT SIZE=2 FACE="Arial">Hi all,</FONT>
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<P><FONT SIZE=2 FACE="Arial">We are running a new Centos-4 server, and it has kernel panicked on us 4 times in the last month. After the first kernel panic we hooked up a serial console to the server and captured the output in order to have a record of what happens. I've included the error messages from the last time it locked up… but it doesn't really mean much to me. Anybody have any ideas what might be causing this server lock up?</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Server description:</FONT>
<BR><FONT SIZE=2 FACE="Arial">-Dell PE1750 - dual 2.8Ghz Xeon (with Hyper Threading on) - 2GB DDR RAM - Perc4-DI onboard RAID using 3 scsi drives in raid-5 configuration</FONT></P>
<P><FONT SIZE=2 FACE="Arial">-ext3 file system</FONT>
<BR><FONT SIZE=2 FACE="Arial">-kernel-smp-2.6.9-5.0.3.EL</FONT>
<BR><FONT SIZE=2 FACE="Arial">-mysql - from distribution</FONT>
<BR><FONT SIZE=2 FACE="Arial">-2 postfix instances rebuilt with MySQL support</FONT>
<BR><FONT SIZE=2 FACE="Arial">-amavisd-new</FONT>
<BR><FONT SIZE=2 FACE="Arial">-clamav</FONT>
<BR><FONT SIZE=2 FACE="Arial">-spamassassin</FONT>
<BR><FONT SIZE=2 FACE="Arial">-rbldnsd</FONT>
<BR><FONT SIZE=2 FACE="Arial">-bind</FONT>
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<P><FONT SIZE=2 FACE="Arial">Here's the captured output from a serial console connected to the server at time of fault.</FONT>
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<P><FONT SIZE=2 FACE="Courier New">Unable to handle kernel NULL pointer dereference at virtual address 00000000</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> printing eip:</FONT>
<BR><FONT SIZE=2 FACE="Courier New">f8872da8</FONT>
<BR><FONT SIZE=2 FACE="Courier New">*pde = 35562001</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Oops: 0000 [#1]</FONT>
<BR><FONT SIZE=2 FACE="Courier New">SMP </FONT>
<BR><FONT SIZE=2 FACE="Courier New">Modules linked in: md5 ipv6 autofs4 sunrpc dm_mod button battery ac ohci_hcd tg3 floppy sg ext3 jbd megaraid_mbox megaraid_mm sd_mod scsi_mod</FONT></P>
<P><FONT SIZE=2 FACE="Courier New">CPU: 1</FONT>
<BR><FONT SIZE=2 FACE="Courier New">EIP: 0060:[<f8872da8>] Not tainted VLI</FONT>
<BR><FONT SIZE=2 FACE="Courier New">EFLAGS: 00010246 (2.6.9-5.0.3.ELsmp) </FONT>
<BR><FONT SIZE=2 FACE="Courier New">EIP is at __journal_file_buffer+0x1b/0x221 [jbd]</FONT>
<BR><FONT SIZE=2 FACE="Courier New">eax: 00000000 ebx: d2fff26c ecx: 00000008 edx: c2327680</FONT>
<BR><FONT SIZE=2 FACE="Courier New">esi: c2327680 edi: 00000008 ebp: 00000000 esp: f7533dd4</FONT>
<BR><FONT SIZE=2 FACE="Courier New">ds: 007b es: 007b ss: 0068</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Process kjournald (pid: 210, threadinfo=f7533000 task=f75825b0)</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Stack: 00000000 00000000 f148fad8 f7f66200 d2fff26c c2327680 f887351b 00000286 </FONT>
<BR><FONT SIZE=2 FACE="Courier New"> 00000000 00000000 00000000 00000000 00000000 d2517e6c f7f66200 caa4c50c </FONT>
<BR><FONT SIZE=2 FACE="Courier New"> 00001f18 00000000 f75825b0 c011e8d2 f7533e44 f7533e44 f750c054 f8836f24 </FONT>
<BR><FONT SIZE=2 FACE="Courier New">Call Trace:</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<f887351b>] journal_commit_transaction+0x310/0xfb1 [jbd]</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011e8d2>] autoremove_wake_function+0x0/0x2d</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<f8836f24>] megaraid_isr+0x1ad/0x1bf [megaraid_mbox]</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011e8d2>] autoremove_wake_function+0x0/0x2d</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011bcd5>] finish_task_switch+0x30/0x66</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c02c4363>] schedule+0x833/0x869</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c0127e62>] del_timer_sync+0x7a/0x9c</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<f8875e6d>] kjournald+0xc7/0x215 [jbd]</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011e8d2>] autoremove_wake_function+0x0/0x2d</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011e8d2>] autoremove_wake_function+0x0/0x2d</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c011bd1d>] schedule_tail+0x12/0x55</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<f8875da0>] commit_timeout+0x0/0x5 [jbd]</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<f8875da6>] kjournald+0x0/0x215 [jbd]</FONT>
<BR><FONT SIZE=2 FACE="Courier New"> [<c01041f1>] kernel_thread_helper+0x5/0xb</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Code: 14 ba 01 00 00 00 83 c4 10 89 d0 5b 5e 5f 5d c3 55 31 ed 57 89 cf 56 89 d6 53 53 53 89 c3 c7 44 24 04 00 00 00 00 8b 00 89 04 24 <8b> 00 a9 00 00 08 00 75 29 68 d4 85 87 f8 68 9b 07 00 00 68 55 </FONT></P>
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