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<DIV>Hi all,</DIV>
<DIV> </DIV>
<DIV>Our Lustre 2.1.5 client rebooted itself and kernel dump was generated in
/var/crash. </DIV>
<DIV>The backtrace output shows ldlm function which is Lustre-related. Any idea?
Thanks very much.</DIV>
<DIV> </DIV>
<DIV># crash
/usr/lib/debug/lib/modules/2.6.32-279.19.1.el6_lustre.x86_64/vmlinux
vmcore</DIV>
<DIV> </DIV>
<DIV> KERNEL:
/usr/lib/debug/lib/modules/2.6.32-279.19.1.el6_lustre.x86_64/vmlinux</DIV>
<DIV> DUMPFILE: vmcore-lustre-client-2013-07-26-14:04:43
[PARTIAL DUMP]</DIV>
<DIV> CPUS: 16</DIV>
<DIV> DATE: Fri Jul 26 14:03:36
2013</DIV>
<DIV> UPTIME: 01:56:27</DIV>
<DIV>LOAD AVERAGE: 0.25, 0.30, 0.18</DIV>
<DIV> TASKS: 840</DIV>
<DIV> NODENAME: lustre-client</DIV>
<DIV> RELEASE: 2.6.32-279.19.1.el6_lustre.x86_64</DIV>
<DIV> VERSION: #1 SMP Wed Mar 20 16:37:18 PDT 2013</DIV>
<DIV> MACHINE: x86_64 (2600 Mhz)</DIV>
<DIV> MEMORY: 64 GB</DIV>
<DIV> PANIC: "Oops: 0002 [#1] SMP " (check
log for details)</DIV>
<DIV> PID: 3200</DIV>
<DIV> COMMAND: "ldlm_cb_01"</DIV>
<DIV> TASK: ffff881062dfd500
[THREAD_INFO: ffff880f250c2000]</DIV>
<DIV> CPU: 0</DIV>
<DIV> STATE: TASK_RUNNING (PANIC)</DIV>
<DIV> </DIV>
<DIV>crash> bt</DIV>
<DIV>PID: 3200 TASK: ffff881062dfd500 CPU: 0
COMMAND: "ldlm_cb_01"</DIV>
<DIV>#0 [ffff880f250c3900] machine_kexec at ffffffff81031f7b</DIV>
<DIV>#1 [ffff880f250c3960] crash_kexec at ffffffff810b8c22</DIV>
<DIV>#2 [ffff880f250c3a30] oops_end at ffffffff814ed980</DIV>
<DIV>#3 [ffff880f250c3a60] no_context at ffffffff81042a0b</DIV>
<DIV>#4 [ffff880f250c3ab0] __bad_area_nosemaphore at ffffffff81042c95</DIV>
<DIV>#5 [ffff880f250c3b00] bad_area_nosemaphore at ffffffff81042d63</DIV>
<DIV>#6 [ffff880f250c3b10] __do_page_fault at ffffffff810434c1</DIV>
<DIV>#7 [ffff880f250c3c30] do_page_fault at ffffffff814ef95e</DIV>
<DIV>#8 [ffff880f250c3c60] page_fault at ffffffff814ecd15</DIV>
<DIV> [exception RIP: _spin_lock+14]</DIV>
<DIV> RIP: ffffffff814ec7fe RSP: ffff880f250c3d10
RFLAGS: 00010206</DIV>
<DIV> RAX: 0000000000010000 RBX: ffff880e437d66c0
RCX: ffff880e2c963370</DIV>
<DIV> RDX: 000000000000000d RSI: 0000000000000000
RDI: 0000000000000018</DIV>
<DIV> RBP: ffff880f250c3d10 R8:
0000000000000000 R9: 5a5a5a5a5a5a5a5a</DIV>
<DIV> R10: 5a5a5a5a5a5a5a5a R11: 0000000000000000
R12: ffff880e2c963370</DIV>
<DIV> R13: ffff880e437d66c0 R14: ffff880f61b24688
R15: ffff88086659ce00</DIV>
<DIV> ORIG_RAX: ffffffffffffffff CS: 0010 SS:
0018</DIV>
<DIV>#9 [ffff880f250c3d18] lock_res_and_lock at ffffffffa0841060 [ptlrpc]</DIV>
<DIV>#10 [ffff880f250c3d38] ldlm_callback_handler at ffffffffa0869e2e
[ptlrpc]</DIV>
<DIV>#11 [ffff880f250c3dc8] ptlrpc_main at ffffffffa089bbae [ptlrpc]</DIV>
<DIV>#12 [ffff880f250c3f48] kernel_thread at
ffffffff8100c0ca</DIV></DIV></DIV></BODY></HTML>