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Date:	Mon, 06 Jul 2009 10:56:00 -0400
From:	Gene Heskett <gene.heskett@...izon.net>
To:	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: OOM killer in 2.6.31-rc2

Greetings all;

I had to hard reset this box just now as there was no response to a ctl-alt-
bksp when X was un-responsive this morning.

I had built a 2nd version of the 2.6.31-rc2 kernel last night when I found the 
video stuff appeared to have been moved in the .config and my pcHDTV-3000 
cards modules were not being built, but are now.  That kernel was installed, 
and if at some time in the night a module was needed, it would have been 
available, but I can't make a solid connection.

This machine will always be marked as 'tainted' because any bios update that 
fixes the very early boot time oops, also leaves me with a machine that will 
crash hard in 30 seconds to 3 or 4 hours.  The fixes done by the oops make it 
generally dead stable for weeks.  That oops:

Jul  6 10:03:58 coyote kernel: [    0.000000] BIOS-provided physical RAM map:
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 0000000000100000 - 00000000dfee0000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000dfee0000 - 00000000dfee3000 (ACPI NVS)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000dfee3000 - 00000000dfef0000 (ACPI data)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000dfef0000 - 00000000dff00000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  BIOS-e820: 0000000100000000 - 0000000120000000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000] DMI 2.4 present.
Jul  6 10:03:58 coyote kernel: [    0.000000] Phoenix BIOS detected: BIOS may corrupt low RAM, working around it.
Jul  6 10:03:58 coyote kernel: [    0.000000] last_pfn = 0x120000 max_arch_pfn = 0x1000000
Jul  6 10:03:58 coyote kernel: [    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
Jul  6 10:03:58 coyote kernel: [    0.000000] ------------[ cut here ]------------
Jul  6 10:03:58 coyote kernel: [    0.000000] WARNING: at arch/x86/kernel/cpu/mtrr/generic.c:456 
generic_get_mtrr+0x12c/0x150()
Jul  6 10:03:58 coyote kernel: [    0.000000] Hardware name: System Product Name
Jul  6 10:03:58 coyote kernel: [    0.000000] mtrr: your BIOS has set up an incorrect mask, fixing it up.
Jul  6 10:03:58 coyote kernel: [    0.000000] Modules linked in:
Jul  6 10:03:58 coyote kernel: [    0.000000] Pid: 0, comm: swapper Not tainted 2.6.31-rc2 #2
Jul  6 10:03:58 coyote kernel: [    0.000000] Call Trace:
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c101449c>] ? generic_get_mtrr+0x12c/0x150
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c103693d>] warn_slowpath_common+0x7d/0xe0
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c101449c>] ? generic_get_mtrr+0x12c/0x150
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c1036a13>] warn_slowpath_fmt+0x33/0x50
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c101449c>] generic_get_mtrr+0x12c/0x150
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c1422e1a>] mtrr_trim_uncached_memory+0x85/0x368
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c142191e>] ? mtrr_bp_init+0x1d9/0x2bb
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c141c369>] setup_arch+0x52c/0xa33
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c11c0020>] ? thermal_get_trip_type+0x0/0x9c
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c1418bb4>] start_kernel+0xb2/0x38b
Jul  6 10:03:58 coyote kernel: [    0.000000]  [<c1418394>] i386_start_kernel+0x84/0xb0
Jul  6 10:03:58 coyote kernel: [    0.000000] ---[ end trace a7919e7f17c0a725 ]---
Jul  6 10:03:58 coyote kernel: [    0.000000] Scanning 0 areas for low memory corruption
Jul  6 10:03:58 coyote kernel: [    0.000000] modified physical RAM map:
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 0000000000000000 - 0000000000010000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 0000000000010000 - 000000000009f000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 000000000009f000 - 00000000000a0000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000000f0000 - 0000000000100000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 0000000000100000 - 00000000dfee0000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000dfee0000 - 00000000dfee3000 (ACPI NVS)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000dfee3000 - 00000000dfef0000 (ACPI data)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000dfef0000 - 00000000dff00000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000f0000000 - 00000000f4000000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 00000000fec00000 - 0000000100000000 (reserved)
Jul  6 10:03:58 coyote kernel: [    0.000000]  modified: 0000000100000000 - 0000000120000000 (usable)
Jul  6 10:03:58 coyote kernel: [    0.000000] init_memory_mapping: 0000000000000000-00000000379fe000
Jul  6 10:03:58 coyote kernel: [    0.000000] NX (Execute Disable) protection: active

You all have seen this one before, several times.  I have asked that
since its a good fix, that the kernel not be marked tainted in that
instance.  I would run the asus bios that didn't do that _IF_ it was
stable.  2 newer versions are _not_ stable, this is stable after the fix.

The machine has 4G of ram & is I believe 'pae'

The oom's first stanza:

Jul  6 06:45:01 coyote kernel: [78748.106803] X invoked oom-killer: gfp_mask=0xd0, order=0, oom_adj=0
Jul  6 06:45:01 coyote kernel: [78748.106808] Pid: 3068, comm: X Tainted: G        W  2.6.31-rc2 #1
Jul  6 06:45:01 coyote kernel: [78748.106811] Call Trace:
Jul  6 06:45:01 coyote kernel: [78748.106818]  [<c1308513>] ? printk+0x23/0x40
Jul  6 06:45:01 coyote kernel: [78748.106823]  [<c107e268>] oom_kill_process+0x178/0x270
Jul  6 06:45:01 coyote kernel: [78748.106827]  [<c107e6ad>] ? badness+0x14d/0x220
Jul  6 06:45:01 coyote kernel: [78748.106830]  [<c107e8c2>] __out_of_memory+0x142/0x170
Jul  6 06:45:01 coyote kernel: [78748.106834]  [<c107e949>] out_of_memory+0x59/0xc0
Jul  6 06:45:01 coyote kernel: [78748.106837]  [<c1081d17>] __alloc_pages_nodemask+0x4f7/0x510
Jul  6 06:45:01 coyote kernel: [78748.106841]  [<c1081db3>] __get_free_pages+0x23/0x50
Jul  6 06:45:01 coyote kernel: [78748.106845]  [<c10bf8b2>] __pollwait+0xb2/0xf0
Jul  6 06:45:01 coyote kernel: [78748.106848]  [<c12f6528>] unix_poll+0x28/0xc0
Jul  6 06:45:01 coyote kernel: [78748.106851]  [<c1281b7e>] sock_poll+0x1e/0x40
Jul  6 06:45:01 coyote kernel: [78748.106853]  [<c10bee8e>] do_select+0x34e/0x6b0
Jul  6 06:45:01 coyote kernel: [78748.106871]  [<c10bf800>] ? __pollwait+0x0/0xf0
Jul  6 06:45:01 coyote kernel: [78748.106874]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106877]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106879]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106882]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106884]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106887]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106890]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106892]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106895]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106897]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106900]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106902]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106905]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106907]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106910]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106913]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106915]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106918]  [<c10bf8f0>] ? pollwake+0x0/0x90
Jul  6 06:45:01 coyote kernel: [78748.106920]  [<c10bf402>] core_sys_select+0x212/0x350
Jul  6 06:45:01 coyote kernel: [78748.106925]  [<c10be292>] ? poll_select_set_timeout+0x82/0x90
Jul  6 06:45:01 coyote kernel: [78748.106928]  [<c10bf761>] sys_select+0x51/0xf0
Jul  6 06:45:01 coyote kernel: [78748.106931]  [<c10031b7>] sysenter_do_call+0x12/0x22
Jul  6 06:45:01 coyote kernel: [78748.106933] Mem-Info:
Jul  6 06:45:01 coyote kernel: [78748.106935] DMA per-cpu:
Jul  6 06:45:01 coyote kernel: [78748.106937] CPU    0: hi:    0, btch:   1 usd:   0
Jul  6 06:45:01 coyote kernel: [78748.106939] CPU    1: hi:    0, btch:   1 usd:   0
Jul  6 06:45:01 coyote kernel: [78748.106941] CPU    2: hi:    0, btch:   1 usd:   0
Jul  6 06:45:01 coyote kernel: [78748.106943] CPU    3: hi:    0, btch:   1 usd:   0
Jul  6 06:45:01 coyote kernel: [78748.106944] Normal per-cpu:
Jul  6 06:45:01 coyote kernel: [78748.106946] CPU    0: hi:  186, btch:  31 usd: 118
Jul  6 06:45:01 coyote kernel: [78748.106948] CPU    1: hi:  186, btch:  31 usd: 171
Jul  6 06:45:01 coyote kernel: [78748.106950] CPU    2: hi:  186, btch:  31 usd: 159
Jul  6 06:45:01 coyote kernel: [78748.106952] CPU    3: hi:  186, btch:  31 usd: 172
Jul  6 06:45:01 coyote kernel: [78748.106954] HighMem per-cpu:
Jul  6 06:45:01 coyote kernel: [78748.106955] CPU    0: hi:  186, btch:  31 usd:  56
Jul  6 06:45:01 coyote kernel: [78748.106957] CPU    1: hi:  186, btch:  31 usd:  20
Jul  6 06:45:01 coyote kernel: [78748.106959] CPU    2: hi:  186, btch:  31 usd:  53
Jul  6 06:45:01 coyote kernel: [78748.106961] CPU    3: hi:  186, btch:  31 usd: 180
Jul  6 06:45:01 coyote kernel: [78748.106965] Active_anon:90702 active_file:136927 inactive_anon:26328
Jul  6 06:45:01 coyote kernel: [78748.106966]  inactive_file:1956 unevictable:25 dirty:4 writeback:0 unstable:0
Jul  6 06:45:01 coyote kernel: [78748.106967]  free:560899 slab:206505 mapped:19048 pagetables:3220 bounce:0
Jul  6 06:45:01 coyote kernel: [78748.106971] DMA free:3496kB min:64kB low:80kB high:96kB active_anon:0kB 
inactive_anon:0kB acti
ve_file:12kB inactive_file:8kB unevictable:0kB present:15804kB pages_scanned:0 all_unreclaimable? yes
Jul  6 06:45:01 coyote kernel: [78748.106983] lowmem_reserve[]: 0 0 25406 25406
Jul  6 06:45:01 coyote kernel: [78748.106988] HighMem free:2236464kB min:512kB low:3928kB high:7348kB 
active_anon:362808kB inact
ive_anon:105308kB active_file:547220kB inactive_file:7704kB unevictable:100kB present:3252052kB pages_scanned:0 
all_unreclaimabl
e? no
Jul  6 06:45:01 coyote kernel: [78748.106991] lowmem_reserve[]: 0 0 0 0
Jul  6 06:45:01 coyote kernel: [78748.106994] DMA: 310*4kB 204*8kB 27*16kB 6*32kB 0*64kB 0*128kB 0*256kB 0*512kB 
0*1024kB 0*2048
kB 0*4096kB = 3496kB
Jul  6 06:45:01 coyote kernel: [78748.107002] Normal: 1*4kB 0*8kB 1*16kB 1*32kB 0*64kB 0*128kB 0*256kB 1*512kB 
1*1024kB 1*2048kB
 0*4096kB = 3636kB
Jul  6 06:45:01 coyote kernel: [78748.107009] HighMem: 45888*4kB 44682*8kB 32844*16kB 18479*32kB 6641*64kB 1114*128kB 
37*256kB 1
*512kB 1*1024kB 0*2048kB 0*4096kB = 2236464kB
Jul  6 06:45:01 coyote kernel: [78748.107017] 139771 total pagecache pages
Jul  6 06:45:01 coyote kernel: [78748.107019] 616 pages in swap cache
Jul  6 06:45:01 coyote kernel: [78748.107021] Swap cache stats: add 7937, delete 7321, find 2362/2515
Jul  6 06:45:01 coyote kernel: [78748.107023] Free swap  = 8360652kB
Jul  6 06:45:01 coyote kernel: [78748.107024] Total swap = 8385912kB
Jul  6 06:45:01 coyote kernel: [78748.121323] 1179632 pages RAM
Jul  6 06:45:01 coyote kernel: [78748.121325] 951810 pages HighMem
Jul  6 06:45:01 coyote kernel: [78748.121327] 146165 pages reserved
Jul  6 06:45:01 coyote kernel: [78748.121328] 149491 pages shared
Jul  6 06:45:01 coyote kernel: [78748.121329] 441615 pages non-shared
Jul  6 06:45:01 coyote kernel: [78748.121332] Out of memory: kill process 2385 (mysqld) score 15451 or a child
Jul  6 06:45:01 coyote kernel: [78748.121334] Killed process 2385 (mysqld)

and continued to:

Jul  6 06:45:01 coyote kernel: [78748.137525] Killed process 30192 (spamd)
Jul  6 06:45:01 coyote kernel: [78748.154292] Killed process 2506 (httpd)
Jul  6 06:45:01 coyote kernel: [78748.170851] Killed process 2507 (httpd)
Jul  6 06:45:01 coyote kernel: [78748.187519] Killed process 2508 (httpd)
Jul  6 06:45:01 coyote kernel: [78748.320880] Killed process 2510 (httpd)
Jul  6 06:45:01 coyote kernel: [78748.337529] Killed process 2511 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.467158] Killed process 948 (spamd)
Jul  6 06:45:05 coyote kernel: [78751.483535] Killed process 963 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.500194] Killed process 964 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.502688] Killed process 965 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.506025] Killed process 2512 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.509376] Killed process 2513 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.512713] Killed process 2514 (httpd)
Jul  6 06:45:05 coyote kernel: [78751.516057] Killed process 1995 (krunner_lock)
Jul  6 06:45:05 coyote kernel: [78751.519481] Killed process 3391 (kwin)
Jul  6 06:45:05 coyote kernel: [78751.522674] Killed process 3396 (plasma)
Jul  6 06:45:05 coyote kernel: [78751.526006] Killed process 6931 (kmail)
Jul  6 06:45:05 coyote kernel: [78751.542786] Killed process 16309 (spamd)
Jul  6 06:45:05 coyote kernel: [78751.546042] Killed process 3421 (krunner)
Jul  6 06:45:05 coyote kernel: [78751.549521] Killed process 3357 (klauncher)
Jul  6 06:45:05 coyote kernel: [78751.552760] Killed process 3526 (kcalc)
Jul  6 06:45:05 coyote kernel: [78751.759570] Killed process 3068 (X)
Jul  6 06:45:05 coyote kernel: [78751.765648] Killed process 3389 (ksmserver)

The oom started at 6:45:01 this morning.  mysqld wasn't doing anything & the 
only reason its even started is for mythtv, which is how I found my 
pcHDTV-3000 was on the missing list even if occupying a slot.

I've no idea if the rebuilt (with v4l drivers now) will also crash.
It feels normal.  And looks normal in htop's display, using 538M of 4096M,
no swap used yet.

>From my .config:

# grep MEM .config
CONFIG_SHMEM=y
# CONFIG_MEMTEST is not set
# CONFIG_NOHIGHMEM is not set
# CONFIG_HIGHMEM4G is not set
CONFIG_HIGHMEM64G=y
CONFIG_HIGHMEM=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_INPUT_FF_MEMLESS is not set
CONFIG_DEVKMEM=y
CONFIG_FIX_EARLYCON_MEM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_MEMSTICK is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_STRICT_DEVMEM=y
CONFIG_HAS_IOMEM=y

In case I have some option miss-set in that, plz advise.

Thanks.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
The NRA is offering FREE Associate memberships to anyone who wants them.
<https://www.nrahq.org/nrabonus/accept-membership.asp>

Mal: "Shouldn't have been you - they shoulda hit us."

Book: "That crossed my mind..."
				--"Serenity"

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