我在装有基于openwrt的固件的设备中重启网络时，一直面临以下（如下所示）内核oops。由于proc_register是调用跟踪中的最顶层，因此我验证了igmp_hwnat（设备特定驱动程序）的注册成功。使用的内核是3.18。我是第一次使用与内核相关的崩溃。如果任何人都有关于如何进行调试的线索或者这些问题的原因可能会非常有用。这个oops消息没有任何副作用。
先谢谢。
root@OpenWrt:/# /etc/init.d/network restart
root@OpenWrt:/# [ 573.100000] ecnt_register_hook fail, igmp_hwnat_multicast_undrop already registered
[ 573.110000] ecnt_register_hook fail, clear_multicast_flood_hwentry already registered
[ 573.120000] ------------[ cut here ]------------
[ 573.120000] WARNING: CPU: 0 PID: 2170 at fs/proc/generic.c:527 proc_register+0x150/0x1a4()
[ 573.130000] proc_dir_entry 'tc3162/igmp_hwnat' already registered
[ 573.130000] Modules linked in: xt_length xt_comment xt_multiport
[ 573.140000] CPU: 0 PID: 2170 Comm: netifd Tainted: G W 3.18.21 #1
[ 573.150000] Stack : 00000000 00000004 00000006 80084b8c 00000000 00000000 00000000 00000000
803e57f2 00000041 00000000 00000000 0000020f 8fbaae50 8033c45c 803a4263
0000087a 00000000 803e45dc 8fbaae50 00000001 0000000a 00000014 800857e8
803a84e0 8004f01c 00000000 00000000 803418ec 8f04fcc4 8f04fcc4 8033c45c
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
...
[ 573.180000] Call Trace:
[ 573.180000] [<80037fac>] show_stack+0x50/0x84
[ 573.190000] [<80195f68>] dump_stack+0x64/0x84
[ 573.190000] [<8004f19c>] warn_slowpath_common+0x84/0xb4
[ 573.200000] [<8004f1f8>] warn_slowpath_fmt+0x2c/0x38
[ 573.200000] [<801380fc>] proc_register+0x150/0x1a4
[ 573.210000] [<80138198>] create_proc_entry+0x48/0x7c
[ 573.210000] [<802e52a8>] igmp_hwnat_init+0x98/0xcc
[ 573.220000] [<80232b68>] alloc_netdev_mqs+0x17c/0x2f4
[ 573.220000] [<802de1a8>] br_add_bridge+0x30/0x80
[ 573.230000] [<802dfe2c>] br_ioctl_deviceless_stub+0x288/0x2c0
[ 573.230000] [<80219310>] sock_ioctl+0x1dc/0x320
[ 573.240000] [<800fd030>] do_vfs_ioctl+0x61c/0x688
[ 573.240000] [<800fd0ec>] SyS_ioctl+0x50/0x94
[ 573.250000] [<80022588>] handle_sys+0x128/0x14c
[ 573.250000]
[ 573.250000] ---[ end trace 020d72816f719b36 ]---
root@OpenWrt:/#