我在我的服务器上运行 Gentoo，我刚刚从内核 4.4.39 升级到 4.9.6，内核配置基本上没有改变。我的系统日志充满了如下错误报告：
[50547.483577] ksoftirqd/0: page allocation failure: order:0, mode:0x2280020(GFP_ATOMIC|__GFP_NOTRACK)
[50547.483605] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.9.6-gentoo-r1 #2
[50547.483608] Hardware name: /LakePort, BIOS 6.00 PG 02/20/2009
[50547.483613] f5473bd0 c13e692e c17a9870 00000000 f5473c00 c10d03a7 c17a79dc 02280020
[50547.483626] f5473c08 f5473c10 c17a9870 f5473be4 f5282d37 00000008 00000000 00000030
[50547.483638] f5473cbc c10d0769 02280020 c17a9870 00000000 f5473c34 00000000 e5dca054
[50547.483652] Call Trace:
[50547.483670] [<c13e692e>] dump_stack+0x47/0x69
[50547.483679] [<c10d03a7>] warn_alloc+0xf7/0x120
[50547.483686] [<c10d0769>] __alloc_pages_nodemask+0x329/0xb40
[50547.483697] [<c1107114>] new_slab+0x2a4/0x460
[50547.483704] [<c1108e62>] ___slab_alloc.constprop.81+0x392/0x540
[50547.483713] [<c159fe11>] ? __build_skb+0x21/0x100 …