crash bt分析推疊問題請教 - Linux

sys

KERNEL: /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64/vmlinux
DUMPFILE: /var/crash/2016-02-09-14:50/vmcore [PARTIAL DUMP]
CPUS: 16
DATE: Tue Feb 9 14:50:24 2016
UPTIME: 1077 days, 23:09:04
LOAD AVERAGE: 0.32, 0.32, 0.45
TASKS: 1728
NODENAME: mrp-ftp2
RELEASE: 2.6.32-220.el6.x86_64
VERSION: #1 SMP Wed Nov 9 08:03:13 EST 2011
MACHINE: x86_64 (2533 Mhz)
MEMORY: 16 GB
PANIC: ""


bt

PID: 3089 TASK: ffff8802798be080 CPU: 3 COMMAND: "kondemand/3"
#0 [ffff8802798b38a0] machine_kexec at ffffffff81031fcb
#1 [ffff8802798b3900] crash_kexec at ffffffff810b8f72
#2 [ffff8802798b39d0] oops_end at ffffffff814f04b0
#3 [ffff8802798b3a00] die at ffffffff8100f26b
#4 [ffff8802798b3a30] do_trap at ffffffff814efda4
#5 [ffff8802798b3a90] do_divide_error at ffffffff8100cfff
#6 [ffff8802798b3b30] divide_error at ffffffff8100be7b
[exception RIP: find_busiest_group+1477]
RIP: ffffffff81054ad5 RSP: ffff8802798b3be0 RFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8802798b3dfc RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 0000000000000018
RBP: ffff8802798b3d70 R8: ffff88002826f860 R9: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffff01
R13: 0000000000015fc0 R14: ffffffffffffffff R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffff8802798b3d78] thread_return at ffffffff814ecda1
#8 [ffff8802798b3e38] worker_thread at ffffffff8108b33c
#9 [ffff8802798b3ee8] kthread at ffffffff81090886
#10 [ffff8802798b3f48] kernel_thread at ffffffff8100c14a


bt要如何分析 在第幾個推疊發生crash?
請大大解惑?


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