linux-kernel - Re: page allocation failure message kernel 2.6.31.4 (tty-related)

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Message-ID: <alpine.LRH.2.00.0910211848510.20992@twin.jikos.cz>
Date:	Wed, 21 Oct 2009 18:49:52 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Stephan von Krawczynski <skraw@...net.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: page allocation failure message kernel 2.6.31.4 (tty-related)


[ tty related CCs added ]

On Tue, 20 Oct 2009, Stephan von Krawczynski wrote:

> Hello all,
> 
> is this something to worry about, I saw several of those:
> 
> Oct 20 11:25:41 box kernel: ssh: page allocation failure. order:1, mode:0x20
> Oct 20 11:25:41 box kernel: Pid: 2970, comm: ssh Tainted: G   M       2.6.31.4 #1
> Oct 20 11:25:41 box kernel: Call Trace:
> Oct 20 11:25:41 box kernel:  [<c105545c>] ? __alloc_pages_nodemask+0x404/0x446
> Oct 20 11:25:41 box kernel:  [<c106e1d1>] ? cache_alloc_refill+0x249/0x42d
> Oct 20 11:25:41 box kernel:  [<c106e41c>] ? __kmalloc+0x67/0x9e
> Oct 20 11:25:41 box kernel:  [<c1147c5a>] ? tty_buffer_request_room+0xa9/0x112
> Oct 20 11:25:42 box kernel:  [<c1147deb>] ? tty_insert_flip_string+0x24/0x90
> Oct 20 11:25:42 box kernel:  [<c114869e>] ? pty_write+0x25/0x3f
> Oct 20 11:25:42 box kernel:  [<c1144b6f>] ? n_tty_write+0x23d/0x2d5
> Oct 20 11:25:42 box kernel:  [<c1021cc7>] ? default_wake_function+0x0/0x8
> Oct 20 11:25:42 box kernel:  [<c1142ab7>] ? tty_write+0x144/0x1b3
> Oct 20 11:25:42 box kernel:  [<c1144932>] ? n_tty_write+0x0/0x2d5
> Oct 20 11:25:42 box kernel:  [<c1142973>] ? tty_write+0x0/0x1b3
> Oct 20 11:25:42 box kernel:  [<c107238b>] ? vfs_write+0x84/0x105
> Oct 20 11:25:42 box kernel:  [<c10724a4>] ? sys_write+0x3c/0x63
> Oct 20 11:25:42 box kernel:  [<c1002804>] ? sysenter_do_call+0x12/0x22
> Oct 20 11:25:44 box kernel: DMA per-cpu:
> Oct 20 11:25:44 box kernel: CPU    0: hi:    0, btch:   1 usd:   0
> Oct 20 11:25:44 box kernel: CPU    1: hi:    0, btch:   1 usd:   0
> Oct 20 11:25:44 box kernel: Normal per-cpu:
> Oct 20 11:25:44 box kernel: CPU    0: hi:  186, btch:  31 usd: 193
> Oct 20 11:25:44 box kernel: CPU    1: hi:  186, btch:  31 usd:  46
> Oct 20 11:25:44 box kernel: HighMem per-cpu:
> Oct 20 11:25:44 box kernel: CPU    0: hi:  186, btch:  31 usd: 157
> Oct 20 11:25:44 box kernel: CPU    1: hi:  186, btch:  31 usd: 142
> Oct 20 11:25:44 box kernel: Active_anon:89762 active_file:96664 inactive_anon:23257
> Oct 20 11:25:44 box kernel:  inactive_file:119147 unevictable:0 dirty:53 writeback:0 unstable:0
> Oct 20 11:25:45 box kernel:  free:569624 slab:38452 mapped:14421 pagetables:977 bounce:0
> Oct 20 11:25:45 box kernel: DMA free:3488kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:0kB active_file:8980kB inactive_file:3024kB unevictable:0kB present:15804kB pages_scanned:0 all_unreclaima
> Oct 20 11:25:45 box kernel: lowmem_reserve[]: 0 865 3698 3698
> Oct 20 11:25:45 box kernel: Normal free:5468kB min:3728kB low:4660kB high:5592kB active_anon:0kB inactive_anon:0kB active_file:324840kB inactive_file:330196kB unevictable:0kB present:885944kB pages_scanned:0
> Oct 20 11:25:45 box kernel: lowmem_reserve[]: 0 0 22669 22669
> Oct 20 11:25:45 box kernel: HighMem free:2269540kB min:512kB low:3564kB high:6616kB active_anon:359048kB inactive_anon:93028kB active_file:52836kB inactive_file:143368kB unevictable:0kB present:2901640kB page
> Oct 20 11:25:45 box kernel: lowmem_reserve[]: 0 0 0 0
> Oct 20 11:25:45 box kernel: DMA: 172*4kB 6*8kB 0*16kB 0*32kB 3*64kB 2*128kB 3*256kB 3*512kB 0*1024kB 0*2048kB 0*4096kB = 3488kB
> Oct 20 11:25:45 box kernel: Normal: 1232*4kB 83*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 5592kB
> Oct 20 11:25:45 box kernel: HighMem: 45*4kB 80*8kB 69*16kB 29*32kB 29*64kB 22*128kB 14*256kB 9*512kB 3*1024kB 3*2048kB 548*4096kB = 2269540kB
> Oct 20 11:25:45 box kernel: 216788 total pagecache pages
> Oct 20 11:25:45 box kernel: 0 pages in swap cache
> Oct 20 11:25:45 box kernel: Swap cache stats: add 0, delete 0, find 0/0
> Oct 20 11:25:45 box kernel: Free swap  = 2104472kB
> Oct 20 11:25:45 box kernel: Total swap = 2104472kB
> 
> 
> 

-- 
Jiri Kosina
SUSE Labs, Novell Inc.

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