Hello,

in the recent kernels I sometimes got the following allocation failure. It is
provoked by ifconfig wlan0 up. I have machine with 2GB RAM and 1.5GB of swap
(99% free). It happens if I start netbeans (which takes fair amount of memory)
and keep running netbeans whole night (so that updatedb and slocate are woken
up). 

My question is why this happens? According to Jiri Slaby, this should not
happen. I'm also attaching vmstat and slabinfo.

[14478990.059888] ifconfig: page allocation failure. order:4, mode:0x40d0
[14478990.059904] Pid: 27071, comm: ifconfig Not tainted 2.6.26-rc2-git5 #9
[14478990.059909] 
[14478990.059910] Call Trace:
[14478990.059932]  [<ffffffff80275a3d>] __alloc_pages_internal+0x3dd/0x4f0
[14478990.059945]  [<ffffffff80275bec>] __get_free_pages+0x1c/0x60
[14478990.059968]  [<ffffffffa00f51fa>]
:iwl4965:iwl4965_tx_queue_init+0x9a/0x1d0
[14478990.059992]  [<ffffffffa00fd873>]
:iwl4965:iwl4965_hw_nic_init+0x3f3/0x1cb0
[14478990.059999]  [<ffffffff8026a32e>] setup_irq+0x14e/0x290
[14478990.060018]  [<ffffffffa00e6ac4>] :iwl4965:__iwl4965_up+0xb4/0x590
[14478990.060035]  [<ffffffffa00e75c8>] :iwl4965:iwl4965_mac_start+0x5c8/0xfc0
[14478990.060043]  [<ffffffff802a451f>] __link_path_walk+0x53f/0x1040
[14478990.060069]  [<ffffffffa00b8dbc>] :mac80211:ieee80211_open+0x13c/0x5c0
[14478990.060075]  [<ffffffff802a50dc>] path_walk+0xbc/0xd0
[14478990.060086]  [<ffffffff804739f9>] dev_open+0x89/0xf0
[14478990.060093]  [<ffffffff80473292>] dev_change_flags+0x92/0x1b0
[14478990.060102]  [<ffffffff804b9bb4>] devinet_ioctl+0x7a4/0x7b0
[14478990.060108]  [<ffffffff802a6816>] do_filp_open+0xb6/0x990
[14478990.060121]  [<ffffffff80464496>] sock_ioctl+0x66/0x280
[14478990.060127]  [<ffffffff802a7f7f>] vfs_ioctl+0x2f/0xb0
[14478990.060133]  [<ffffffff802a8283>] do_vfs_ioctl+0x283/0x2f0
[14478990.060140]  [<ffffffff802a8339>] sys_ioctl+0x49/0x80
[14478990.060146]  [<ffffffff80297e99>] do_sys_open+0xe9/0x110
[14478990.060155]  [<ffffffff8020c32b>] system_call_after_swapgs+0x7b/0x80
[14478990.060163] 
[14478990.060166] Mem-info:
[14478990.060169] DMA per-cpu:
[14478990.060174] CPU    0: hi:    0, btch:   1 usd:   0
[14478990.060178] CPU    1: hi:    0, btch:   1 usd:   0
[14478990.060182] DMA32 per-cpu:
[14478990.060186] CPU    0: hi:  186, btch:  31 usd:   0
[14478990.060190] CPU    1: hi:  186, btch:  31 usd:   0
[14478990.060197] Active:353461 inactive:90156 dirty:3 writeback:0 unstable:0
[14478990.060199]  free:10504 slab:16638 mapped:24858 pagetables:3705 bounce:0
[14478990.060207] DMA free:7916kB min:28kB low:32kB high:40kB active:2536kB
inactive:0kB present:10032kB pages_scanned:0 all_unreclaimable? no
[14478990.060212] lowmem_reserve[]: 0 1963 1963 1963
[14478990.060223] DMA32 free:34100kB min:5652kB low:7064kB high:8476kB
active:1411308kB inactive:360624kB present:2010596kB pages_scanned:0
all_unreclaimable? no
[14478990.060229] lowmem_reserve[]: 0 0 0 0
[14478990.060237] DMA: 35*4kB 16*8kB 24*16kB 19*32kB 16*64kB 12*128kB 0*256kB
0*512kB 0*1024kB 0*2048kB 1*4096kB = 7916kB
[14478990.060256] DMA32: 4660*4kB 1361*8kB 231*16kB 15*32kB 1*64kB 1*128kB
1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 34152kB
[14478990.060274] 174269 total pagecache pages
[14478990.060279] Swap cache: add 135, delete 86, find 31/36
[14478990.060283] Free swap  = 1534328kB
[14478990.060286] Total swap = 1534672kB
[14478990.076000] 513712 pages of RAM
[14478990.076008] 9367 reserved pages
[14478990.076012] 161337 pages shared
[14478990.076015] 49 pages swap cached
[14478990.076019] iwl4965: kmalloc for auxiliary BD structures failed
[14478990.076030] iwl4965: Tx 6 queue init failed
[14478990.076061] iwl4965: Unable to init nic

-- 
Luka1 Hejtmanek