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Scary kernel message from 2.6.10-k7 on sid



Just now, I was using my machine normally, then I went to
http://ursine.ca/cgi-bin/dwww?search=patch (ursine.ca is my system[1])
and the system got hung for about 20 seconds, with the KDE system monitor
showing 100% system CPU usage and RAM usage almost pegged.  After a few
seconds, the kernel barfed this on the xconsole:

Jan 29 01:05:34 localhost kernel: oom-killer: gfp_mask=0x1d2
Jan 29 01:05:34 localhost kernel: DMA per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 2, high 6, batch 1
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 2, batch 1
Jan 29 01:05:34 localhost kernel: Normal per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 32, high 96, batch 16
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 32, batch 16
Jan 29 01:05:34 localhost kernel: HighMem per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 14, high 42, batch 7
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 14, batch 7
Jan 29 01:05:34 localhost kernel: 
Jan 29 01:05:34 localhost kernel: Free pages:        4204kB (112kB HighMem)
Jan 29 01:05:34 localhost kernel: Active:245965 inactive:3045 dirty:0 writeback:0 unstable:0 free:1051 slab:4411 mapped:244569 pagetables:1140
Jan 29 01:05:34 localhost kernel: DMA free:68kB min:68kB low:84kB high:100kB active:12680kB inactive:340kB present:16384kB pages_scanned:24340 all_unreclaimable? yes
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: Normal free:4024kB min:3756kB low:4692kB high:5632kB active:849260kB inactive:9920kB present:901120kB pages_scanned:1388164 all_unreclaimable? no
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: HighMem free:112kB min:128kB low:160kB high:192kB active:121920kB inactive:1920kB present:131008kB pages_scanned:219104 all_unreclaimable? yes
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: DMA: 1*4kB 0*8kB 0*16kB 0*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 68kB
Jan 29 01:05:34 localhost kernel: Normal: 80*4kB 1*8kB 1*16kB 1*32kB 1*64kB 0*128kB 0*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 4024kB
Jan 29 01:05:34 localhost kernel: HighMem: 0*4kB 0*8kB 1*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 112kB
Jan 29 01:05:34 localhost kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0
Jan 29 01:05:34 localhost kernel: oom-killer: gfp_mask=0x1d2
Jan 29 01:05:34 localhost kernel: DMA per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 2, high 6, batch 1
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 2, batch 1
Jan 29 01:05:34 localhost kernel: Normal per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 32, high 96, batch 16
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 32, batch 16
Jan 29 01:05:34 localhost kernel: HighMem per-cpu:
Jan 29 01:05:34 localhost kernel: cpu 0 hot: low 14, high 42, batch 7
Jan 29 01:05:34 localhost kernel: cpu 0 cold: low 0, high 14, batch 7
Jan 29 01:05:34 localhost kernel: 
Jan 29 01:05:34 localhost kernel: Free pages:        4204kB (112kB HighMem)
Jan 29 01:05:34 localhost kernel: Active:245716 inactive:3042 dirty:0 writeback:0 unstable:0 free:1051 slab:4300 mapped:244563 pagetables:1140
Jan 29 01:05:34 localhost kernel: DMA free:68kB min:68kB low:84kB high:100kB active:13024kB inactive:0kB present:16384kB pages_scanned:17427 all_unreclaimable? yes
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: Normal free:4024kB min:3756kB low:4692kB high:5632kB active:848424kB inactive:9912kB present:901120kB pages_scanned:1354941 all_unreclaimable? yes
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: HighMem free:112kB min:128kB low:160kB high:192kB active:121416kB inactive:2256kB present:131008kB pages_scanned:242797 all_unreclaimable? yes
Jan 29 01:05:34 localhost kernel: protections[]: 0 0 0
Jan 29 01:05:34 localhost kernel: DMA: 1*4kB 0*8kB 0*16kB 0*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 68kB
Jan 29 01:05:34 localhost kernel: Normal: 78*4kB 2*8kB 1*16kB 1*32kB 1*64kB 0*128kB 0*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 4024kB
Jan 29 01:05:34 localhost kernel: HighMem: 0*4kB 0*8kB 1*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 112kB

I've never encountered this before, and needless to say, it rather
surprised me.  What do these runes mean?

[1] I got my domain back this week, so I'm back to ursine.ca (though I'm 
not turning off the alternate ursine.dyndns.org this time).

-- 
Paul Johnson
baloo@ursine.ca
http://ursine.ca/~baloo/

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