Message-ID: <a700c9740810071743k496ea343m703d703b65153758@mail.gmail.com>
Date:	Wed, 8 Oct 2008 09:43:37 +0900
From:	"Alexey Kopytko" <alexey@...ytko.ru>
To:	sct@...hat.com, akpm@...ux-foundation.org, adilger@....com
Cc:	linux-ext4@...r.kernel.org
Subject: Out of memory: ext3 with data=journal and non-standard journal size (2.6.27-rc6)

When writing to ext3 with extra sized journal, out of memory errors may occur.

Is that OK?

Steps to reproduce:

LSmini ~ # uname -a
Linux LSmini 2.6.27-rc6lsmini-00036-g5d58b60 #79 PREEMPT Tue Oct 7
22:31:16 JST 2008 armv5tel Feroceon rev 0 (v5l) Buffalo Linkstation
Mini GNU/Linux

We are on arm9-based NAS board with not much memory, but you can
repeat that on x86:

 # grep MemTotal /proc/meminfo
MemTotal:       126968 kB

# mkfs.ext3 -T largefile -J size=512 /dev/md4
# tune2fs -o journal_data /dev/md4

Confirm journal size: it must be larger than all available memory.

# debugfs /dev/md4 -R "stat <8>" | grep -i user
debugfs 1.41.1 (01-Sep-2008)
User:     0   Group:     0   Size: 536870912

# mkdir /raid/
# mount /dev/md4  /raid/

# grep md4 /proc/mounts
/dev/md4 /raid ext3 rw,errors=continue,data=journal 0 0

Now write something larger than all your memory:

# dd if=/dev/zero of=/raid/testfile bs=1M count=150;

And watch you system being out of memory:

<6>kjournald starting.  Commit interval 5 seconds
<6>EXT3 FS on md4, internal journal
<6>EXT3-fs: mounted filesystem with journal data mode.
<4>sshd: page allocation failure. order:2, mode:0x20
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c00680d0>]
(__alloc_pages_internal+0x3e8/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c0084e60>]
(cache_alloc_refill+0x300/0x5e4)
<4>[<c0084b60>] (cache_alloc_refill+0x0/0x5e4) from [<c00851d8>]
(__kmalloc+0x94/0xd0)
<4>[<c0085144>] (__kmalloc+0x0/0xd0) from [<c01cdf54>] (__alloc_skb+0x50/0xf4)
<4> r7:c7807d40 r6:00002380 r5:00000020 r4:c7834780
<4>[<c01cdf04>] (__alloc_skb+0x0/0xf4) from [<c01ce2c0>]
(dev_alloc_skb+0x20/0x44)
<4> r8:c78c6450 r7:c78c604c r6:c78c6450 r5:c11645c0 r4:20000013
<4>[<c01ce2a0>] (dev_alloc_skb+0x0/0x44) from [<c0166b54>]
(rxq_refill+0x70/0x198)
<4>[<c0166ae4>] (rxq_refill+0x0/0x198) from [<c01681c0>]
(mv643xx_eth_poll+0x364/0x45c)
<4>[<c0167e5c>] (mv643xx_eth_poll+0x0/0x45c) from [<c01d5870>]
(net_rx_action+0x64/0x1b8)
<4>[<c01d580c>] (net_rx_action+0x0/0x1b8) from [<c003a584>]
(__do_softirq+0x68/0xd0)
<4>[<c003a51c>] (__do_softirq+0x0/0xd0) from [<c003a638>] (do_softirq+0x4c/0x58)
<4>[<c003a5ec>] (do_softirq+0x0/0x58) from [<c003ad9c>]
(local_bh_enable+0x8c/0xc0)
<4> r4:c11a88e0
<4>[<c003ad10>] (local_bh_enable+0x0/0xc0) from [<c01d7034>]
(dev_queue_xmit+0x484/0x4d0)
<4> r4:c11a88e0
<4>[<c01d6bb0>] (dev_queue_xmit+0x0/0x4d0) from [<c01f17dc>]
(ip_finish_output+0x24c/0x2a0)
<4> r7:00000000 r6:0000000e r5:c603c3e0 r4:c7869f08
<4>[<c01f1590>] (ip_finish_output+0x0/0x2a0) from [<c01f1b8c>]
(ip_output+0x80/0x88)
<4>[<c01f1b0c>] (ip_output+0x0/0x88) from [<c01efec8>] (ip_local_out+0x30/0x34)
<4> r5:000222d8 r4:c7869f08
<4>[<c01efe98>] (ip_local_out+0x0/0x34) from [<c01f2024>]
(ip_queue_xmit+0x2cc/0x340)
<4> r4:c6b68c6c
<4>[<c01f1d58>] (ip_queue_xmit+0x0/0x340) from [<c0203240>]
(tcp_transmit_skb+0x68c/0x6e0)
<4>[<c0202bb4>] (tcp_transmit_skb+0x0/0x6e0) from [<c0204cd0>]
(__tcp_push_pending_frames+0x6fc/0x7b8)
<4>[<c02045d4>] (__tcp_push_pending_frames+0x0/0x7b8) from
[<c01f9718>] (tcp_sendmsg+0x9ec/0xb50)
<4>[<c01f8d2c>] (tcp_sendmsg+0x0/0xb50) from [<c01c6690>]
(sock_aio_write+0xdc/0xe4)
<4>[<c01c65b4>] (sock_aio_write+0x0/0xe4) from [<c0087f7c>]
(do_sync_write+0xb8/0x10c)
<4> r8:c7197f70 r7:c11c3240 r6:c784d940 r5:00000000 r4:00000000
<4>[<c0087ec4>] (do_sync_write+0x0/0x10c) from [<c0088884>]
(vfs_write+0xd0/0x148)
<4>[<c00887b4>] (vfs_write+0x0/0x148) from [<c0088df4>] (sys_write+0x44/0x70)
<4> r7:00000080 r6:c11c3240 r5:00000000 r4:00000000
<4>[<c0088db0>] (sys_write+0x0/0x70) from [<c0025c80>]
(ret_fast_syscall+0x0/0x2c)
<4> r8:c0025e04 r7:00000004 r6:0005802c r5:00000080 r4:00000003
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  31
<4>Active:1073 inactive:26121 dirty:12701 writeback:3684 unstable:0
<4> free:800 slab:3375 mapped:325 pagetables:49 bounce:0
<4>DMA free:3200kB min:1440kB low:1800kB high:2160kB active:4292kB
inactive:104484kB present:130048kB pages_scanned:0 all_unreco
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 626*4kB 71*8kB 2*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 3200kB
<4>26811 total pagecache pages
<4>172 pages in swap cache
<4>Swap cache stats: add 10545, delete 10373, find 4757/5468
<4>Free swap  = 247176kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>914 free pages
<4>1109 reserved pages
<4>3375 slab pages
<4>26799 pages shared
<4>172 pages swap cached
<4>top invoked oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c006a624>]
(__do_page_cache_readahead+0x118/0x254)
<4>[<c006a50c>] (__do_page_cache_readahead+0x0/0x254) from
[<c006abdc>] (do_page_cache_readahead+0x6c/0x74)
<4>[<c006ab70>] (do_page_cache_readahead+0x0/0x74) from [<c00646cc>]
(filemap_fault+0x1dc/0x450)
<4> r7:c117e8c0 r6:c7192000 r5:00000000 r4:00000000
<4>[<c00644f0>] (filemap_fault+0x0/0x450) from [<c0070cf4>]
(__do_fault+0x58/0x410)
<4>[<c0070c9c>] (__do_fault+0x0/0x410) from [<c0071e7c>]
(handle_mm_fault+0x32c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c002b608>]
(do_translation_fault+0x1c/0x88)
<4>[<c002b5ec>] (do_translation_fault+0x0/0x88) from [<c00251e8>]
(do_PrefetchAbort+0x18/0x1c)
<4> r4:ffffffff
<4>[<c00251d0>] (do_PrefetchAbort+0x0/0x1c) from [<c0025c00>]
(ret_from_exception+0x0/0x10)
<4>Exception stack(0xc7193fb0 to 0xc7193ff8)
<4>3fa0:                                     00000000 be82a55c
00000001 00000001
<4>3fc0: 00000000 be82a55c 00000001 0001e848 0001d160 be82a408
be82a55c 00020638
<4>3fe0: 0001d070 be829c80 0000dc28 401557c0 60000010 ffffffff
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  39
<4>Active:13785 inactive:13645 dirty:0 writeback:0 unstable:0
<4> free:367 slab:3510 mapped:0 pagetables:53 bounce:0
<4>DMA free:1468kB min:1440kB low:1800kB high:2160kB active:55140kB
inactive:54580kB present:130048kB pages_scanned:113442 all_o
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 231*4kB 48*8kB 4*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1468kB
<4>22576 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12048, delete 12048, find 5471/6308
<4>Free swap  = 245844kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>493 free pages
<4>1109 reserved pages
<4>3510 slab pages
<4>22576 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 979 (rpc.statd) score 392 or a child
<3>Killed process 979 (rpc.statd)
<4>top invoked oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c006a624>]
(__do_page_cache_readahead+0x118/0x254)
<4>[<c006a50c>] (__do_page_cache_readahead+0x0/0x254) from
[<c006abdc>] (do_page_cache_readahead+0x6c/0x74)
<4>[<c006ab70>] (do_page_cache_readahead+0x0/0x74) from [<c00646cc>]
(filemap_fault+0x1dc/0x450)
<4> r7:c117e8c0 r6:c7192000 r5:00000000 r4:00000000
<4>[<c00644f0>] (filemap_fault+0x0/0x450) from [<c0070cf4>]
(__do_fault+0x58/0x410)
<4>[<c0070c9c>] (__do_fault+0x0/0x410) from [<c0071e7c>]
(handle_mm_fault+0x32c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c002b608>]
(do_translation_fault+0x1c/0x88)
<4>[<c002b5ec>] (do_translation_fault+0x0/0x88) from [<c00251e8>]
(do_PrefetchAbort+0x18/0x1c)
<4> r4:ffffffff
<4>[<c00251d0>] (do_PrefetchAbort+0x0/0x1c) from [<c0025c00>]
(ret_from_exception+0x0/0x10)
<4>Exception stack(0xc7193fb0 to 0xc7193ff8)
<4>3fa0:                                     00000000 be82a55c
00000001 00000001
<4>3fc0: 00000000 be82a55c 00000001 0001e848 0001d160 be82a408
be82a55c 00020638
<4>3fe0: 0001d070 be829c80 0000dc28 401557c0 60000010 ffffffff
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  37
<4>Active:13160 inactive:14270 dirty:0 writeback:0 unstable:0
<4> free:357 slab:3510 mapped:0 pagetables:50 bounce:0
<4>DMA free:1428kB min:1440kB low:1800kB high:2160kB active:52640kB
inactive:57080kB present:130048kB pages_scanned:219443 all_s
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 215*4kB 49*8kB 5*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1428kB
<4>22576 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12053, delete 12053, find 5471/6309
<4>Free swap  = 245924kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>478 free pages
<4>1109 reserved pages
<4>3510 slab pages
<4>22576 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 964 (portmap) score 369 or a child
<3>Killed process 964 (portmap)
<4>dd invoked oom-killer: gfp_mask=0x1200d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c007c5b8>]
(read_swap_cache_async+0x4c/0x100)
<4>[<c007c56c>] (read_swap_cache_async+0x0/0x100) from [<c007c6a8>]
(swapin_readahead+0x3c/0x94)
<4>[<c007c66c>] (swapin_readahead+0x0/0x94) from [<c0071ebc>]
(handle_mm_fault+0x36c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c0025228>]
(do_DataAbort+0x3c/0xa0)
<4>[<c00251ec>] (do_DataAbort+0x0/0xa0) from [<c002582c>] (__dabt_svc+0x4c/0x60)
<4>Exception stack(0xc785dc90 to 0xc785dcd8)
<4>dc80:                                     00001000 00000000
4022e000 00000000
<4>dca0: 00001000 c785c000 057b1000 00000000 00000000 c785dd40
00001000 c785dcec
<4>dcc0: 000b1000 c785dcd8 c006292c c0060e88 20000013 ffffffff
<4> r8:00000000 r7:00000000 r6:057b1000 r5:c785dcc4 r4:ffffffff
<4>[<c0060e48>] (iov_iter_fault_in_readable+0x0/0x98) from
[<c006292c>] (generic_file_buffered_write+0xe0/0x698)
<4>[<c006284c>] (generic_file_buffered_write+0x0/0x698) from
[<c0063634>] (__generic_file_aio_write_nolock+0x49c/0x4ec)
<4>[<c0063198>] (__generic_file_aio_write_nolock+0x0/0x4ec) from
[<c00636f8>] (generic_file_aio_write+0x74/0xe8)
<4>[<c0063684>] (generic_file_aio_write+0x0/0xe8) from [<c00cff1c>]
(ext3_file_write+0x28/0xa8)
<4>[<c00cfef4>] (ext3_file_write+0x0/0xa8) from [<c0087f7c>]
(do_sync_write+0xb8/0x10c)
<4> r7:c09eb1e0 r6:c78976a0 r5:00000000 r4:05700000
<4>[<c0087ec4>] (do_sync_write+0x0/0x10c) from [<c008886c>]
(vfs_write+0xb8/0x148)
<4>[<c00887b4>] (vfs_write+0x0/0x148) from [<c0088df4>] (sys_write+0x44/0x70)
<4> r7:00100000 r6:c09eb1e0 r5:00000000 r4:05700000
<4>[<c0088db0>] (sys_write+0x0/0x70) from [<c0025c80>]
(ret_fast_syscall+0x0/0x2c)
<4> r8:c0025e04 r7:00000004 r6:4017d000 r5:00100000 r4:00000000
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  31
<4>Active:13770 inactive:13693 dirty:0 writeback:0 unstable:0
<4> free:354 slab:3510 mapped:1 pagetables:47 bounce:0
<4>DMA free:1416kB min:1440kB low:1800kB high:2160kB active:55080kB
inactive:54772kB present:130048kB pages_scanned:14174 all_uo
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 208*4kB 49*8kB 6*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1416kB
<4>22609 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12061, delete 12061, find 5471/6311
<4>Free swap  = 246004kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>466 free pages
<4>1109 reserved pages
<4>3510 slab pages
<4>22578 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 1057 (sshd) score 183 or a child
<3>Killed process 1075 (sshd)
<4>sshd invoked oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c006a624>]
(__do_page_cache_readahead+0x118/0x254)
<4>[<c006a50c>] (__do_page_cache_readahead+0x0/0x254) from
[<c006abdc>] (do_page_cache_readahead+0x6c/0x74)
<4>[<c006ab70>] (do_page_cache_readahead+0x0/0x74) from [<c00646cc>]
(filemap_fault+0x1dc/0x450)
<4> r7:c113bd60 r6:c7196000 r5:00000000 r4:00000000
<4>[<c00644f0>] (filemap_fault+0x0/0x450) from [<c0070cf4>]
(__do_fault+0x58/0x410)
<4>[<c0070c9c>] (__do_fault+0x0/0x410) from [<c0071e7c>]
(handle_mm_fault+0x32c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c002b608>]
(do_translation_fault+0x1c/0x88)
<4>[<c002b5ec>] (do_translation_fault+0x0/0x88) from [<c00251e8>]
(do_PrefetchAbort+0x18/0x1c)
<4> r4:ffffffff
<4>[<c00251d0>] (do_PrefetchAbort+0x0/0x1c) from [<c0025c00>]
(ret_from_exception+0x0/0x10)
<4>Exception stack(0xc7197fb0 to 0xc7197ff8)
<4>7fa0:                                     be92f35c 00000011
ffffffff be92f3dc
<4>7fc0: be92f35c 00000000 0005802c 00056abc be92f474 be92f47c
be92f478 be92f470
<4>7fe0: 0005626c be92f358 00014ed8 402846ac 80000010 ffffffff
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  35
<4>Active:13806 inactive:13657 dirty:0 writeback:0 unstable:0
<4> free:358 slab:3512 mapped:1 pagetables:42 bounce:0
<4>DMA free:1432kB min:1440kB low:1800kB high:2160kB active:55224kB
inactive:54628kB present:130048kB pages_scanned:348 all_unro
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 208*4kB 49*8kB 7*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1432kB
<4>22609 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12061, delete 12061, find 5471/6313
<4>Free swap  = 246484kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>471 free pages
<4>1109 reserved pages
<4>3512 slab pages
<4>22578 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 1155 (sshd) score 139 or a child
<3>Killed process 1159 (bash)
<4>cat invoked oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c006a624>]
(__do_page_cache_readahead+0x118/0x254)
<4>[<c006a50c>] (__do_page_cache_readahead+0x0/0x254) from
[<c006abdc>] (do_page_cache_readahead+0x6c/0x74)
<4>[<c006ab70>] (do_page_cache_readahead+0x0/0x74) from [<c00646cc>]
(filemap_fault+0x1dc/0x450)
<4> r7:c09ebc60 r6:c7ada000 r5:00000000 r4:00000000
<4>[<c00644f0>] (filemap_fault+0x0/0x450) from [<c0070cf4>]
(__do_fault+0x58/0x410)
<4>[<c0070c9c>] (__do_fault+0x0/0x410) from [<c0071e7c>]
(handle_mm_fault+0x32c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c002b608>]
(do_translation_fault+0x1c/0x88)
<4>[<c002b5ec>] (do_translation_fault+0x0/0x88) from [<c00251e8>]
(do_PrefetchAbort+0x18/0x1c)
<4> r4:ffffffff
<4>[<c00251d0>] (do_PrefetchAbort+0x0/0x1c) from [<c0025c00>]
(ret_from_exception+0x0/0x10)
<4>Exception stack(0xc7adbfb0 to 0xc7adbff8)
<4>bfa0:                                     0000096f 00016000
00001000 00016000
<4>bfc0: 00001000 00016000 00016000 00000003 7fffe000 00000000
40023fa4 00001000
<4>bfe0: 00000003 bedc24b8 0000aad8 400d37dc 60000010 ffffffff
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  36
<4>Active:13864 inactive:13567 dirty:0 writeback:0 unstable:0
<4> free:418 slab:3512 mapped:0 pagetables:39 bounce:0
<4>DMA free:1672kB min:1440kB low:1800kB high:2160kB active:55456kB
inactive:54268kB present:130048kB pages_scanned:219271 all_s
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 258*4kB 48*8kB 10*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1672kB
<4>22577 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12066, delete 12066, find 5471/6314
<4>Free swap  = 246816kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>529 free pages
<4>1109 reserved pages
<4>3512 slab pages
<4>22577 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 1057 (sshd) score 124 or a child
<3>Killed process 1155 (sshd)
<4>top invoked oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=0
<4>[<c0029994>] (dump_stack+0x0/0x14) from [<c006526c>]
(oom_kill_process+0x58/0x1cc)
<4>[<c0065214>] (oom_kill_process+0x0/0x1cc) from [<c00657c8>]
(out_of_memory+0x1cc/0x238)
<4>[<c00655fc>] (out_of_memory+0x0/0x238) from [<c006802c>]
(__alloc_pages_internal+0x344/0x400)
<4>[<c0067ce8>] (__alloc_pages_internal+0x0/0x400) from [<c006a624>]
(__do_page_cache_readahead+0x118/0x254)
<4>[<c006a50c>] (__do_page_cache_readahead+0x0/0x254) from
[<c006abdc>] (do_page_cache_readahead+0x6c/0x74)
<4>[<c006ab70>] (do_page_cache_readahead+0x0/0x74) from [<c00646cc>]
(filemap_fault+0x1dc/0x450)
<4> r7:c117e8c0 r6:c7192000 r5:00000000 r4:00000000
<4>[<c00644f0>] (filemap_fault+0x0/0x450) from [<c0070cf4>]
(__do_fault+0x58/0x410)
<4>[<c0070c9c>] (__do_fault+0x0/0x410) from [<c0071e7c>]
(handle_mm_fault+0x32c/0x734)
<4>[<c0071b50>] (handle_mm_fault+0x0/0x734) from [<c002b420>]
(do_page_fault+0xf4/0x23c)
<4>[<c002b32c>] (do_page_fault+0x0/0x23c) from [<c002b608>]
(do_translation_fault+0x1c/0x88)
<4>[<c002b5ec>] (do_translation_fault+0x0/0x88) from [<c00251e8>]
(do_PrefetchAbort+0x18/0x1c)
<4> r4:ffffffff
<4>[<c00251d0>] (do_PrefetchAbort+0x0/0x1c) from [<c0025c00>]
(ret_from_exception+0x0/0x10)
<4>Exception stack(0xc7193fb0 to 0xc7193ff8)
<4>3fa0:                                     be829965 0001e25c
00000000 00000003
<4>3fc0: 00008a3b 00000000 00000000 00005404 0001d160 be82a408
be82a55c 00020638
<4>3fe0: 00000010 be829950 00000016 4015bf8c 40000010 ffffffff
<4>Mem-info:
<4>DMA per-cpu:
<4>CPU    0: hi:   42, btch:   7 usd:  38
<4>Active:13638 inactive:13735 dirty:0 writeback:0 unstable:0
<4> free:416 slab:3514 mapped:0 pagetables:34 bounce:0
<4>DMA free:1664kB min:1440kB low:1800kB high:2160kB active:54552kB
inactive:54940kB present:130048kB pages_scanned:221054 all_s
<4>lowmem_reserve[]: 0 0 0
<4>DMA: 230*4kB 55*8kB 13*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 1664kB
<4>22583 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 12217, delete 12217, find 5488/6358
<4>Free swap  = 247296kB
<4>Total swap = 250580kB
<4>32768 pages of RAM
<4>523 free pages
<4>1109 reserved pages
<4>3514 slab pages
<4>22647 pages shared
<4>0 pages swap cached
<3>Out of memory: kill process 1074 (login) score 69 or a child
<3>Killed process 1110 (bash)

And so on until kernel panic and reboot.

This bug won't occur with default journal size, even if it is larger
than all available memory.

Regards,
Alexey
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