在新安装的 SLES 11.4 上，我们从 /var/crash 中看到了这个 dmesg：
<7>[ 48.600847] storage: no IPv6 routers present
<6>[ 63.725477] BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
<6>[ 310.226578] [Hardware Error]: Machine check events logged
<6>[ 3536.417543] lp: driver loaded but no devices found
<6>[ 3536.417582] ppdev: user-space parallel port driver
<6>[ 3536.983736] lp: driver loaded but no devices found
<6>[ 3537.005660] Uniform Multi-Platform E-IDE driver
<6>[ 3537.011756] ide-cd driver 5.00
<6>[ 3537.033960] st: Version 20101219, fixed bufsize 32768, s/g segs 256
<0>[ 3691.340041] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 9
<4>[ 3691.447069] Pid: 0, comm: kworker/0:1 Tainted: G X 3.0.101-107-default #1
<4>[ 3691.554690] Call Trace:
<4>[ 3691.590254] [<ffffffff81004b35>] dump_trace+0x75/0x300
<4>[ 3691.664599] [<ffffffff81467873>] dump_stack+0x69/0x6f
<4>[ 3691.738878] [<ffffffff8146792f>] panic+0xb6/0x224
<4>[ 3691.804367] [<ffffffff810c900c>] watchdog_overflow_callback+0xdc/0xe0
<4>[ 3691.896736] [<ffffffff810f55fa>] __perf_event_overflow+0xaa/0x230
<4>[ 3691.980294] [<ffffffff81018808>] intel_pmu_handle_irq+0x1a8/0x370
<4>[ 3692.069469] [<ffffffff8146c8f1>] perf_event_nmi_handler+0x31/0xa0
<4>[ 3692.156027] [<ffffffff8146ea47>] notifier_call_chain+0x37/0x70
<4>[ 3692.239630] [<ffffffff8146ea8d>] __atomic_notifier_call_chain+0xd/0x20
<4>[ 3692.334749] [<ffffffff8146eadd>] notify_die+0x2d/0x40
<4>[ 3692.409254] [<ffffffff8146c073>] default_do_nmi+0x33/0xc0
<4>[ 3692.489610] [<ffffffff8146c168>] do_nmi+0x68/0x80
<4>[ 3692.558033] [<ffffffff8146b595>] restart_nmi+0x1e/0x2e
重新安装它以检查它是硬件问题还是软件问题，但是当我们运行 DSA 日志时它仍然崩溃（开始于约 3500 秒的正常运行时间）。
问题：从这个 dmesg（或任何其他信息）中，我们可以确定导致崩溃的原因是什么？cpu9错误？或驱动程序错误？
看起来升级 megaraid 固件（还有一个 ram dimm 问题！）修复了 DSA 期间的崩溃。