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Subject2.6.19.2, cp 18gb_file 18gb_file.2 = OOM killer, 100% reproducible
Perhaps its time to back to a stable (2.6.17.13 kernel)?

Anyway, when I run a cp 18gb_file 18gb_file.2 on a dual raptor sw raid1
partition, the OOM killer goes into effect and kills almost all my
processes.

Completely 100% reproducible.

Does 2.6.19.2 have some of memory allocation bug as well?

System Events
=-=-=-=-=-=-=
Jan 20 15:13:13 p34 kernel: [ 8204.430917] top invoked oom-killer:
gfp_mask=0xd0, order=0, oomkilladj=0
Jan 20 15:13:15 p34 kernel: [ 8204.430929] [<c013cce3>]
out_of_memory+0x189/0x1b6
Jan 20 15:13:15 p34 kernel: [ 8204.430939] [<c013e577>]
__alloc_pages+0x27b/0x2db
Jan 20 15:13:15 p34 kernel: [ 8204.430949] [<c013e619>]
__get_free_pages+0x42/0x4d
Jan 20 15:13:15 p34 kernel: [ 8204.430955] [<c018bc99>]
proc_file_read+0x72/0x28e
Jan 20 15:13:15 p34 kernel: [ 8204.430962] [<c027bec9>]
_atomic_dec_and_lock+0x2d/0x54
Jan 20 15:13:15 p34 kernel: [ 8204.430968] [<c016cb53>]
mntput_no_expire+0x1c/0x7d
Jan 20 15:13:15 p34 kernel: [ 8204.430975] [<c0158141>]
vfs_read+0x9d/0x17b
Jan 20 15:13:15 p34 kernel: [ 8204.430983] [<c0158644>]
sys_read+0x4b/0x74
Jan 20 15:13:15 p34 kernel: [ 8204.430988] [<c0103013>]
syscall_call+0x7/0xb
Jan 20 15:13:15 p34 kernel: [ 8204.430994] =======================
Jan 20 15:13:15 p34 kernel: [ 8204.430997] Mem-info:
Jan 20 15:13:15 p34 kernel: [ 8204.430999] DMA per-cpu:
Jan 20 15:13:15 p34 squid[2515]: Squid Parent: child process 2517 exited
due to signal 9
Jan 20 15:13:15 p34 kernel: [ 8204.431003] CPU 0: Hot: hi: 0, btch:
1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
Jan 20 15:13:15 p34 kernel: [ 8204.431007] CPU 1: Hot: hi: 0, btch:
1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
Jan 20 15:13:15 p34 kernel: [ 8204.431010] Normal per-cpu:
Jan 20 15:13:15 p34 kernel: [ 8204.431013] CPU 0: Hot: hi: 186, btch:
31 usd: 166 Cold: hi: 62, btch: 15 usd: 50
Jan 20 15:13:15 p34 kernel: [ 8204.431017] CPU 1: Hot: hi: 186, btch:
31 usd: 30 Cold: hi: 62, btch: 15 usd: 60
Jan 20 15:13:15 p34 kernel: [ 8204.431021] HighMem per-cpu:
Jan 20 15:13:15 p34 kernel: [ 8204.431024] CPU 0: Hot: hi: 186, btch:
31 usd: 13 Cold: hi: 62, btch: 15 usd: 3
Jan 20 15:13:15 p34 kernel: [ 8204.431028] CPU 1: Hot: hi: 186, btch:
31 usd: 23 Cold: hi: 62, btch: 15 usd: 14
Jan 20 15:13:15 p34 kernel: [ 8204.431033] Active:8356 inactive:247241
dirty:58126 writeback:146669 unstable:0 free:41510 slab:61581 mapped:5339
pagetables:470
Jan 20 15:13:15 p34 kernel: [ 8204.431038] DMA free:3544kB min:68kB
low:84kB high:100kB active:0kB inactive:0kB present:16256kB
pages_scanned:0 all_unreclaimable? yes
Jan 20 15:13:15 p34 kernel: [ 8204.431055] lowmem_reserve[]: 0 873 1991
Jan 20 15:13:15 p34 kernel: [ 8204.431064] Normal free:2788kB min:3744kB
low:4680kB high:5616kB active:4kB inactive:30496kB present:894080kB
pages_scanned:47944
all_unreclaimable? yes
Jan 20 15:13:15 p34 kernel: [ 8204.431068] lowmem_reserve[]: 0 0 8945
Jan 20 15:13:15 p34 kernel: [ 8204.431077] HighMem free:159708kB min:512kB
low:1708kB high:2908kB active:33420kB inactive:958468kB present:1145032kB
pages_scanned:224
all_unreclaimable? no
Jan 20 15:13:15 p34 kernel: [ 8204.431080] lowmem_reserve[]: 0 0 0
Jan 20 15:13:15 p34 kernel: [ 8204.431097] DMA: 0*4kB 1*8kB 1*16kB 0*32kB
1*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 0*4096kB = 3544kB
Jan 20 15:13:15 p34 kernel: [ 8204.431114] Normal: 1*4kB 0*8kB 0*16kB
3*32kB 0*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 2788kB
Jan 20 15:13:15 p34 kernel: [ 8204.431132] HighMem: 1*4kB 1*8kB 3997*16kB
2194*32kB 353*64kB 17*128kB 3*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =
159708kB
Jan 20 15:13:15 p34 kernel: [ 8204.431150] Swap cache: add 2551, delete
2533, find 11/16, race 0+0
Jan 20 15:13:15 p34 kernel: [ 8204.431153] Free swap = 2190716kB
Jan 20 15:13:15 p34 kernel: [ 8204.431155] Total swap = 2200760kB
Jan 20 15:13:15 p34 kernel: [ 8204.431157] Free swap: 2190716kB
Jan 20 15:13:15 p34 kernel: [ 8204.436274] 517888 pages of RAM
Jan 20 15:13:15 p34 kernel: [ 8204.436279] 288512 pages of HIGHMEM
Jan 20 15:13:15 p34 kernel: [ 8204.436281] 5662 reserved pages
Jan 20 15:13:15 p34 kernel: [ 8204.436283] 246964 pages shared
Jan 20 15:13:15 p34 kernel: [ 8204.436285] 18 pages swap cached
Jan 20 15:13:15 p34 kernel: [ 8204.436288] 58126 pages dirty
Jan 20 15:13:15 p34 kernel: [ 8204.436290] 146669 pages writeback
Jan 20 15:13:15 p34 kernel: [ 8204.436292] 5339 pages mapped
Jan 20 15:13:15 p34 kernel: [ 8204.436294] 61581 pages slab
Jan 20 15:13:15 p34 kernel: [ 8204.436296] 470 pages pagetables
Jan 20 15:13:15 p34 kernel: [ 8204.436391] Out of Memory: Kill process
1848 (named) score 12591 and children.
Jan 20 15:13:15 p34 kernel: [ 8204.436395] Out of memory: Killed process
1848 (named).
Jan 20 15:13:15 p34 kernel: [ 8204.437143] bash invoked oom-killer:
gfp_mask=0xd0, order=0, oomkilladj=0
Jan 20 15:13:15 p34 kernel: [ 8204.437151] [<c013cce3>]
out_of_memory+0x189/0x1b6
Jan 20 15:13:15 p34 kernel: [ 8204.437160] [<c013e577>]
__alloc_pages+0x27b/0x2db
Jan 20 15:13:15 p34 kernel: [ 8204.437166] [<c0154855>]
cache_alloc_refill+0x2e9/0x540
Jan 20 15:13:15 p34 kernel: [ 8204.437172] [<c015456a>]
kmem_cache_alloc+0x40/0x42
Jan 20 15:13:15 p34 kernel: [ 8204.437177] [<c011231d>]
pgd_alloc+0x18/0x1c
Jan 20 15:13:15 p34 kernel: [ 8204.437183] [<c0118c27>] mm_init+0xbc/0xe9
Jan 20 15:13:15 p34 kernel: [ 8204.437188] [<c015ce45>]
do_execve+0x6c/0x1dc
Jan 20 15:13:15 p34 kernel: [ 8204.437193] [<c010135b>]
sys_execve+0x3c/0x97
Jan 20 15:13:15 p34 kernel: [ 8204.437198] [<c0103013>]
syscall_call+0x7/0xb
Jan 20 15:13:15 p34 kernel: [ 8204.437202] [<c042007b>]
schedule+0x34b/0x8cd
Jan 20 15:13:15 p34 kernel: [ 8204.437208] =======================
Jan 20 15:13:15 p34 kernel: [ 8204.437211] Mem-info:
Jan 20 15:13:15 p34 kernel: [ 8204.437213] DMA per-cpu:
Jan 20 15:13:15 p34 kernel: [ 8204.437216] CPU 0: Hot: hi: 0, btch:
1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
Jan 20 15:13:15 p34 kernel: [ 8204.437220] CPU 1: Hot: hi: 0, btch:
1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
Jan 20 15:13:15 p34 kernel: [ 8204.437223] Normal per-cpu:
Jan 20 15:13:15 p34 kernel: [ 8204.437227] CPU 0: Hot: hi: 186, btch:
31 usd: 177 Cold: hi: 62, btch: 15 usd: 50
Jan 20 15:13:15 p34 kernel: [ 8204.437237] CPU 1: Hot: hi: 186, btch:
31 usd: 30 Cold: hi: 62, btch: 15 usd: 60
Jan 20 15:13:15 p34 kernel: [ 8204.437244] HighMem per-cpu:
Jan 20 15:13:15 p34 kernel: [ 8204.437249] CPU 0: Hot: hi: 186, btch:
31 usd: 176 Cold: hi: 62, btch: 15 usd: 3
Jan 20 15:13:15 p34 kernel: [ 8204.437256] CPU 1: Hot: hi: 186, btch:
31 usd: 22 Cold: hi: 62, btch: 15 usd: 14
Jan 20 15:13:15 p34 kernel: [ 8204.437264] Active:8072 inactive:245472
dirty:58126 writeback:146669 unstable:0 free:43401 slab:61581 mapped:4967
pagetables:470
Jan 20 15:13:15 p34 kernel: [ 8204.437272] DMA free:3544kB min:68kB
low:84kB high:100kB active:0kB inactive:0kB present:16256kB
pages_scanned:0 all_unreclaimable? yes
Jan 20 15:13:15 p34 kernel: [ 8204.437275] lowmem_reserve[]: 0 873 1991
Jan 20 15:13:15 p34 kernel: [ 8204.437284] Normal free:2788kB min:3744kB
low:4680kB high:5616kB active:4kB inactive:30496kB present:894080kB
pages_scanned:47944

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