mount.nfs プロセスで "page allocation failure" メッセージが発生する

Issue

• mount.nfs プロセスで、以下のトレースバックメッセージが /var/log/messages ログに表示されます。

Feb 12 09:30:54 hostname kernel: mount.nfs: page allocation failure. order:4, mode:0xd0
Feb 12 09:30:54 hostname kernel:Pid:30647, comm: mount.nfs Not tainted 2.6.32-220.el6.x86_64 #1
Feb 12 09:30:54 hostname kernel:Call Trace:
Feb 12 09:30:54 hostname kernel:[<ffffffff81123f0f>] ?__alloc_pages_nodemask+0x77f/0x940
Feb 12 09:30:54 hostname kernel:[<ffffffff8115ddc2>] ? kmem_getpages+0x62/0x170
Feb 12 09:30:54 hostname kernel:[<ffffffff8115e9da>] ? fallback_alloc+0x1ba/0x270
Feb 12 09:30:54 hostname kernel:[<ffffffff8115e42f>] ? cache_grow+0x2cf/0x320
Feb 12 09:30:54 hostname kernel:[<ffffffff8115e759>] ?____cache_alloc_node+0x99/0x160
Feb 12 09:30:54 hostname kernel:[<ffffffff8115ef9a>] ? kmem_cache_alloc_notrace+0xfa/0x130
Feb 12 09:30:54 hostname kernel:[<ffffffffa03093e7>] ? nfs_idmap_new+0x37/0x160 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffff812726fa>] ? strlcpy+0x4a/0x60
Feb 12 09:30:54 hostname kernel:[<ffffffffa02d0d9b>] ? nfs4_init_client+0x8b/0x210 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02d170c>] ? nfs_get_client+0x53c/0x660 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02d188e>] ? nfs4_set_client+0x5e/0xe0 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02d2573>] ? nfs4_create_server+0xd3/0x350 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02ddf50>] ? nfs4_remote_get_sb+0xa0/0x2e0 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffff811791bb>] ? vfs_kern_mount+0x7b/0x1b0
Feb 12 09:30:54 hostname kernel:[<ffffffffa02deeaf>] ? nfs_do_root_mount+0x7f/0xb0 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02deff2>] ? nfs4_try_mount+0x52/0xd0 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffffa02df882>] ? nfs_get_sb+0x4d2/0xa10 [nfs]
Feb 12 09:30:54 hostname kernel:[<ffffffff811791bb>] ? vfs_kern_mount+0x7b/0x1b0
Feb 12 09:30:54 hostname kernel:[<ffffffff81179362>] ? do_kern_mount+0x52/0x130
Feb 12 09:30:54 hostname kernel:[<ffffffff81197972>] ? do_mount+0x2d2/0x8d0
Feb 12 09:30:54 hostname kernel:[<ffffffff81195342>] ? copy_mount_options+0xf2/0x1a0
Feb 12 09:30:54 hostname kernel:[<ffffffff81198000>] ? sys_mount+0x90/0xe0
Feb 12 09:30:54 hostname kernel:[<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b