某局点R6900 G3服务器操作系统内核崩溃问题

产生了Crash dump日志，crash dump日志分析情况如下：

[60177228.265793] NETDEV WATCHDOG: ens14f1 (ixgbe): transmit queue 32 timed out  

[60177228.265910] Call Trace:

[60177228.265912]  <IRQ>  [<ffffffff98361dc1>] dump_stack+0x19/0x1b

[60177228.265926]  [<ffffffff97c97648>] __warn+0xd8/0x100

[60177228.265928]  [<ffffffff97c976cf>] warn_slowpath_fmt+0x5f/0x80     //以上call trace的打印，查找到一篇Redhat文章：https://access.redhat.com/solutions/43168

[60177228.265933]  [<ffffffff98265bb8>] dev_watchdog+0x248/0x260

[60177228.265935]  [<ffffffff98265970>] ? dev_deactivate_queue.constprop.26+0x60/0x60

[60177228.265940]  [<ffffffff97ca7f58>] call_timer_fn+0x38/0x110

***

[60177228.266061] ---[ end trace af8d17196e82a6df ]---

[60177228.266067] ixgbe 0000:99:00.1 ens14f1: initiating reset due to tx timeout  //0000:99:00.1卡都因为tx tomeout，卡重置复位

[60177228.266087] ixgbe 0000:99:00.1 ens14f1: Reset adapter

[60177228.679830] ixgbe 0000:99:00.1 ens14f1: detected SFP+: 6

[60177228.912358] ixgbe 0000:99:00.1 ens14f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

[60177233.118627] ixgbe 0000:9a:00.1 ens15f1: initiating reset due to tx timeout

[60177233.118694] ixgbe 0000:9a:00.1 ens15f1: Reset adapter

[60177238.115145] ixgbe 0000:9a:00.1 ens15f1: initiating reset due to tx timeout  //0000:9a:00.a卡都因为tx tomeout，卡重置复位,即两张网卡都有被ixgbe重置复位的打印。

[60177243.111664] ixgbe 0000:9a:00.1 ens15f1: initiating reset due to tx timeout

[60177243.943851] NMI watchdog: Watchdog detected hard LOCKUP on cpu 50

filename:       /lib/modules/3.10.0-957.el7.x86_64/kernel/drivers/net/ethernet/intel/ixgbe/ixgbe.ko.xz

version:        5.1.0-k-rh7.6

license:        GPL

description:    Intel(R) 10 Gigabit PCI Express Network Driver

author:         Intel Corporation, <linux.nics@***.***>

retpoline:      Y

rhelversion:    7.6