Memory allocation failures on B3

[cedric_r]

My B3, only a few months old, is showing memory allocation failures all the time when using it as an access point (802.11g only) and transferring files over CIFS. It doesn't happen when connecting to the machine via the LAN (and still copying over CIFS). The application generating the error isn't consistent: I've seen mysqld and swapper today. Given that it doesn't happen when not going through the wifi, it rules out a memory fault.

Here is an example:
Apr 2 15:32:46 b3 kernel: [ 699.013266] __alloc_pages_slowpath: 86 callbacks suppressed
Apr 2 15:32:46 b3 kernel: [ 699.018814] mysqld: page allocation failure. order:1, mode:0x4020
Apr 2 15:32:46 b3 kernel: [ 699.024877] Backtrace:
Apr 2 15:32:46 b3 kernel: [ 699.027334] [<c00326ec>] (dump_backtrace+0x0/0x10c) from [<c0366e8c>] (dump_stack+0x18/0x1c)
Apr 2 15:32:46 b3 kernel: [ 699.035734] r6:00000000 r5:00000000 r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.040363] [<c0366e74>] (dump_stack+0x0/0x1c) from [<c007d550>] (__alloc_pages_nodemask+0x448/0x660)
Apr 2 15:32:46 b3 kernel: [ 699.049549] [<c007d108>] (__alloc_pages_nodemask+0x0/0x660) from [<c00a2d5c>] (new_slab+0x240/0x278)
Apr 2 15:32:46 b3 kernel: [ 699.058643] [<c00a2b1c>] (new_slab+0x0/0x278) from [<c00a2ef8>] (__slab_alloc+0x164/0x25c)
Apr 2 15:32:46 b3 kernel: [ 699.066876] [<c00a2d94>] (__slab_alloc+0x0/0x25c) from [<c00a309c>] (__kmalloc_track_caller+0xac/0xd8)
Apr 2 15:32:46 b3 kernel: [ 699.076148] [<c00a2ff0>] (__kmalloc_track_caller+0x0/0xd8) from [<c02bb0f8>] (__alloc_skb+0x5c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.085238] r8:bf00e078 r7:00000020 r6:00000f60 r5:cfcd2c00 r4:df802180
Apr 2 15:32:46 b3 kernel: [ 699.091973] [<c02bb09c>] (__alloc_skb+0x0/0xf4) from [<bf00e078>] (ath_rxbuf_alloc+0x30/0x98 [ath])
Apr 2 15:32:46 b3 kernel: [ 699.101017] [<bf00e048>] (ath_rxbuf_alloc+0x0/0x98 [ath]) from [<bf0f0eb8>] (ath_rx_tasklet+0x7a0/0x1dbc [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.111236] r7:00000000 r6:df164e80 r5:df14e6d8 r4:274a8aa7
Apr 2 15:32:46 b3 kernel: [ 699.116936] [<bf0f0718>] (ath_rx_tasklet+0x0/0x1dbc [ath9k]) from [<bf0efe00>] (ath9k_tasklet+0x70/0x148 [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.127173] [<bf0efd90>] (ath9k_tasklet+0x0/0x148 [ath9k]) from [<c0044c60>] (tasklet_action+0x7c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.136526] r6:c047c2c0 r5:c045a6ec r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.141155] [<c0044be4>] (tasklet_action+0x0/0xf4) from [<c0045338>] (__do_softirq+0x90/0x14c)
Apr 2 15:32:46 b3 kernel: [ 699.149727] r7:c047c29c r6:00000006 r5:00000001 r4:00000018
Apr 2 15:32:46 b3 kernel: [ 699.155401] [<c00452a8>] (__do_softirq+0x0/0x14c) from [<c0045478>] (irq_exit+0x84/0x94)
Apr 2 15:32:46 b3 kernel: [ 699.163462] [<c00453f4>] (irq_exit+0x0/0x94) from [<c002e054>] (asm_do_IRQ+0x54/0xa4)
Apr 2 15:32:46 b3 kernel: [ 699.171263] [<c002e000>] (asm_do_IRQ+0x0/0xa4) from [<c002ee24>] (__irq_usr+0x44/0xa0)
Apr 2 15:32:46 b3 kernel: [ 699.179146] Exception stack(0xdb71bfb0 to 0xdb71bff8)
Apr 2 15:32:46 b3 kernel: [ 699.184179] bfa0: 00000000 00000000 01374c00 00000000
Apr 2 15:32:46 b3 kernel: [ 699.192318] bfc0: 40c02a38 40c02aa0 00000000 00000000 00000000 46437f38 00001000 40c02aa0
Apr 2 15:32:46 b3 kernel: [ 699.200464] bfe0: 00000000 433f67d0 40615da4 40615e64 20000010 ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.207045] r6:00000016 r5:fed20200 r4:ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.211665] Mem-info:
Apr 2 15:32:46 b3 kernel: [ 699.213920] Normal per-cpu:
Apr 2 15:32:46 b3 kernel: [ 699.216696] CPU 0: hi: 186, btch: 31 usd: 8
Apr 2 15:32:46 b3 kernel: [ 699.221474] active_anon:18286 inactive_anon:21991 isolated_anon:0
Apr 2 15:32:46 b3 kernel: [ 699.221480] active_file:37485 inactive_file:39059 isolated_file:0
Apr 2 15:32:46 b3 kernel: [ 699.221486] unevictable:0 dirty:4856 writeback:0 unstable:0
Apr 2 15:32:46 b3 kernel: [ 699.221491] free:959 slab_reclaimable:6666 slab_unreclaimable:2621
Apr 2 15:32:46 b3 kernel: [ 699.221497] mapped:6697 shmem:1173 pagetables:590 bounce:0
Apr 2 15:32:46 b3 kernel: [ 699.251118] Normal free:3836kB min:2884kB low:3604kB high:4324kB active_anon:73144kB inactive_anon:87964kB active_file:149940kB inactive_file:156236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:520192kB mlocked:0kB dirty:19424kB writeback:0kB mapped:26788kB shmem:4692kB slab_reclaimable:26664kB slab_unreclaimable:10484kB kernel_stack:944kB pagetables:2360kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Apr 2 15:32:46 b3 kernel: [ 699.291161] lowmem_reserve[]: 0 0
Apr 2 15:32:46 b3 kernel: [ 699.294479] Normal: 905*4kB 5*8kB 3*16kB 2*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3836kB
Apr 2 15:32:46 b3 kernel: [ 699.304873] 77728 total pagecache pages
Apr 2 15:32:46 b3 kernel: [ 699.308683] 9 pages in swap cache
Apr 2 15:32:46 b3 kernel: [ 699.311977] Swap cache stats: add 15, delete 6, find 0/0
Apr 2 15:32:46 b3 kernel: [ 699.317263] Free swap = 1047488kB
Apr 2 15:32:46 b3 kernel: [ 699.320642] Total swap = 1047548kB
Apr 2 15:32:46 b3 kernel: [ 699.338163] 131072 pages of RAM
Apr 2 15:32:46 b3 kernel: [ 699.341283] 1283 free pages
Apr 2 15:32:46 b3 kernel: [ 699.344056] 2261 reserved pages
Apr 2 15:32:46 b3 kernel: [ 699.347174] 5540 slab pages
Apr 2 15:32:46 b3 kernel: [ 699.349948] 78876 pages shared
Apr 2 15:32:46 b3 kernel: [ 699.352981] 9 pages swap cached
Apr 2 15:32:46 b3 kernel: [ 699.356103] SLUB: Unable to allocate memory on node -1 (gfp=0x20)
Apr 2 15:32:46 b3 kernel: [ 699.362168] cache: kmalloc-8192, object size: 8192, buffer size: 8192, default order: 3, min order: 1
Apr 2 15:32:46 b3 kernel: [ 699.371517] node 0: slabs: 181, objs: 724, free: 0
Apr 2 15:32:46 b3 kernel: [ 699.376506] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 699.380783] mysqld: page allocation failure. order:1, mode:0x4020
Apr 2 15:32:46 b3 kernel: [ 699.386849] Backtrace:
Apr 2 15:32:46 b3 kernel: [ 699.389305] [<c00326ec>] (dump_backtrace+0x0/0x10c) from [<c0366e8c>] (dump_stack+0x18/0x1c)
Apr 2 15:32:46 b3 kernel: [ 699.397708] r6:00000000 r5:00000000 r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.402336] [<c0366e74>] (dump_stack+0x0/0x1c) from [<c007d550>] (__alloc_pages_nodemask+0x448/0x660)
Apr 2 15:32:46 b3 kernel: [ 699.411522] [<c007d108>] (__alloc_pages_nodemask+0x0/0x660) from [<c00a2d5c>] (new_slab+0x240/0x278)
Apr 2 15:32:46 b3 kernel: [ 699.420623] [<c00a2b1c>] (new_slab+0x0/0x278) from [<c00a2ef8>] (__slab_alloc+0x164/0x25c)
Apr 2 15:32:46 b3 kernel: [ 699.428858] [<c00a2d94>] (__slab_alloc+0x0/0x25c) from [<c00a309c>] (__kmalloc_track_caller+0xac/0xd8)
Apr 2 15:32:46 b3 kernel: [ 699.438129] [<c00a2ff0>] (__kmalloc_track_caller+0x0/0xd8) from [<c02bb0f8>] (__alloc_skb+0x5c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.447220] r8:bf00e078 r7:00000020 r6:00000f60 r5:cfcd2c00 r4:df802180
Apr 2 15:32:46 b3 kernel: [ 699.453953] [<c02bb09c>] (__alloc_skb+0x0/0xf4) from [<bf00e078>] (ath_rxbuf_alloc+0x30/0x98 [ath])
Apr 2 15:32:46 b3 kernel: [ 699.462990] [<bf00e048>] (ath_rxbuf_alloc+0x0/0x98 [ath]) from [<bf0f0eb8>] (ath_rx_tasklet+0x7a0/0x1dbc [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.473209] r7:00000000 r6:df164e80 r5:dfbb4798 r4:274a8aa7
Apr 2 15:32:46 b3 kernel: [ 699.478910] [<bf0f0718>] (ath_rx_tasklet+0x0/0x1dbc [ath9k]) from [<bf0efe00>] (ath9k_tasklet+0x70/0x148 [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.489146] [<bf0efd90>] (ath9k_tasklet+0x0/0x148 [ath9k]) from [<c0044c60>] (tasklet_action+0x7c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.498498] r6:c047c2c0 r5:c045a6ec r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.503128] [<c0044be4>] (tasklet_action+0x0/0xf4) from [<c0045338>] (__do_softirq+0x90/0x14c)
Apr 2 15:32:46 b3 kernel: [ 699.511700] r7:c047c29c r6:00000006 r5:00000001 r4:00000018
Apr 2 15:32:46 b3 kernel: [ 699.517374] [<c00452a8>] (__do_softirq+0x0/0x14c) from [<c0045478>] (irq_exit+0x84/0x94)
Apr 2 15:32:46 b3 kernel: [ 699.525436] [<c00453f4>] (irq_exit+0x0/0x94) from [<c002e054>] (asm_do_IRQ+0x54/0xa4)
Apr 2 15:32:46 b3 kernel: [ 699.533236] [<c002e000>] (asm_do_IRQ+0x0/0xa4) from [<c002ee24>] (__irq_usr+0x44/0xa0)
Apr 2 15:32:46 b3 kernel: [ 699.541119] Exception stack(0xdb71bfb0 to 0xdb71bff8)
Apr 2 15:32:46 b3 kernel: [ 699.546150] bfa0: 00000000 00000000 01374c00 00000000
Apr 2 15:32:46 b3 kernel: [ 699.554291] bfc0: 40c02a38 40c02aa0 00000000 00000000 00000000 46437f38 00001000 40c02aa0
Apr 2 15:32:46 b3 kernel: [ 699.562438] bfe0: 00000000 433f67d0 40615da4 40615e64 20000010 ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.569018] r6:00000016 r5:fed20200 r4:ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.573638] Mem-info:
Apr 2 15:32:46 b3 kernel: [ 699.575893] Normal per-cpu:
Apr 2 15:32:46 b3 kernel: [ 699.578669] CPU 0: hi: 186, btch: 31 usd: 8
Apr 2 15:32:46 b3 kernel: [ 699.583446] active_anon:18286 inactive_anon:21991 isolated_anon:0
Apr 2 15:32:46 b3 kernel: [ 699.583452] active_file:37485 inactive_file:39059 isolated_file:0
Apr 2 15:32:46 b3 kernel: [ 699.583458] unevictable:0 dirty:4856 writeback:0 unstable:0
Apr 2 15:32:46 b3 kernel: [ 699.583464] free:959 slab_reclaimable:6666 slab_unreclaimable:2621
Apr 2 15:32:46 b3 kernel: [ 699.583470] mapped:6697 shmem:1173 pagetables:590 bounce:0
Apr 2 15:32:46 b3 kernel: [ 699.613090] Normal free:3836kB min:2884kB low:3604kB high:4324kB active_anon:73144kB inactive_anon:87964kB active_file:149940kB inactive_file:156236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:520192kB mlocked:0kB dirty:19424kB writeback:0kB mapped:26788kB shmem:4692kB slab_reclaimable:26664kB slab_unreclaimable:10484kB kernel_stack:944kB pagetables:2360kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Apr 2 15:32:46 b3 kernel: [ 699.653134] lowmem_reserve[]: 0 0
Apr 2 15:32:46 b3 kernel: [ 699.656452] Normal: 905*4kB 5*8kB 3*16kB 2*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3836kB
Apr 2 15:32:46 b3 kernel: [ 699.666846] 77728 total pagecache pages
Apr 2 15:32:46 b3 kernel: [ 699.670656] 9 pages in swap cache
Apr 2 15:32:46 b3 kernel: [ 699.673950] Swap cache stats: add 15, delete 6, find 0/0
Apr 2 15:32:46 b3 kernel: [ 699.679236] Free swap = 1047488kB
Apr 2 15:32:46 b3 kernel: [ 699.682615] Total swap = 1047548kB
Apr 2 15:32:46 b3 kernel: [ 699.700042] 131072 pages of RAM
Apr 2 15:32:46 b3 kernel: [ 699.703169] 1283 free pages
Apr 2 15:32:46 b3 kernel: [ 699.705942] 2261 reserved pages
Apr 2 15:32:46 b3 kernel: [ 699.709061] 5540 slab pages
Apr 2 15:32:46 b3 kernel: [ 699.711834] 78876 pages shared
Apr 2 15:32:46 b3 kernel: [ 699.714867] 9 pages swap cached
Apr 2 15:32:46 b3 kernel: [ 699.717989] SLUB: Unable to allocate memory on node -1 (gfp=0x20)
Apr 2 15:32:46 b3 kernel: [ 699.724055] cache: kmalloc-8192, object size: 8192, buffer size: 8192, default order: 3, min order: 1
Apr 2 15:32:46 b3 kernel: [ 699.733402] node 0: slabs: 181, objs: 724, free: 0
Apr 2 15:32:46 b3 kernel: [ 699.738399] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 699.742675] mysqld: page allocation failure. order:1, mode:0x4020
Apr 2 15:32:46 b3 kernel: [ 699.748736] Backtrace:
Apr 2 15:32:46 b3 kernel: [ 699.751191] [<c00326ec>] (dump_backtrace+0x0/0x10c) from [<c0366e8c>] (dump_stack+0x18/0x1c)
Apr 2 15:32:46 b3 kernel: [ 699.759595] r6:00000000 r5:00000000 r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.764221] [<c0366e74>] (dump_stack+0x0/0x1c) from [<c007d550>] (__alloc_pages_nodemask+0x448/0x660)
Apr 2 15:32:46 b3 kernel: [ 699.773409] [<c007d108>] (__alloc_pages_nodemask+0x0/0x660) from [<c00a2d5c>] (new_slab+0x240/0x278)
Apr 2 15:32:46 b3 kernel: [ 699.782502] [<c00a2b1c>] (new_slab+0x0/0x278) from [<c00a2ef8>] (__slab_alloc+0x164/0x25c)
Apr 2 15:32:46 b3 kernel: [ 699.790736] [<c00a2d94>] (__slab_alloc+0x0/0x25c) from [<c00a309c>] (__kmalloc_track_caller+0xac/0xd8)
Apr 2 15:32:46 b3 kernel: [ 699.800007] [<c00a2ff0>] (__kmalloc_track_caller+0x0/0xd8) from [<c02bb0f8>] (__alloc_skb+0x5c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.809098] r8:bf00e078 r7:00000020 r6:00000f60 r5:cfcd2c00 r4:df802180
Apr 2 15:32:46 b3 kernel: [ 699.815831] [<c02bb09c>] (__alloc_skb+0x0/0xf4) from [<bf00e078>] (ath_rxbuf_alloc+0x30/0x98 [ath])
Apr 2 15:32:46 b3 kernel: [ 699.824865] [<bf00e048>] (ath_rxbuf_alloc+0x0/0x98 [ath]) from [<bf0f0eb8>] (ath_rx_tasklet+0x7a0/0x1dbc [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.835079] r7:00000000 r6:df164e80 r5:dfbb4cd8 r4:274a8aa7
Apr 2 15:32:46 b3 kernel: [ 699.840780] [<bf0f0718>] (ath_rx_tasklet+0x0/0x1dbc [ath9k]) from [<bf0efe00>] (ath9k_tasklet+0x70/0x148 [ath9k])
Apr 2 15:32:46 b3 kernel: [ 699.851015] [<bf0efd90>] (ath9k_tasklet+0x0/0x148 [ath9k]) from [<c0044c60>] (tasklet_action+0x7c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 699.860367] r6:c047c2c0 r5:c045a6ec r4:00000000
Apr 2 15:32:46 b3 kernel: [ 699.864997] [<c0044be4>] (tasklet_action+0x0/0xf4) from [<c0045338>] (__do_softirq+0x90/0x14c)
Apr 2 15:32:46 b3 kernel: [ 699.873569] r7:c047c29c r6:00000006 r5:00000001 r4:00000018
Apr 2 15:32:46 b3 kernel: [ 699.879243] [<c00452a8>] (__do_softirq+0x0/0x14c) from [<c0045478>] (irq_exit+0x84/0x94)
Apr 2 15:32:46 b3 kernel: [ 699.887304] [<c00453f4>] (irq_exit+0x0/0x94) from [<c002e054>] (asm_do_IRQ+0x54/0xa4)
Apr 2 15:32:46 b3 kernel: [ 699.895105] [<c002e000>] (asm_do_IRQ+0x0/0xa4) from [<c002ee24>] (__irq_usr+0x44/0xa0)
Apr 2 15:32:46 b3 kernel: [ 699.902988] Exception stack(0xdb71bfb0 to 0xdb71bff8)
Apr 2 15:32:46 b3 kernel: [ 699.908020] bfa0: 00000000 00000000 01374c00 00000000
Apr 2 15:32:46 b3 kernel: [ 699.916160] bfc0: 40c02a38 40c02aa0 00000000 00000000 00000000 46437f38 00001000 40c02aa0
Apr 2 15:32:46 b3 kernel: [ 699.924307] bfe0: 00000000 433f67d0 40615da4 40615e64 20000010 ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.930887] r6:00000016 r5:fed20200 r4:ffffffff
Apr 2 15:32:46 b3 kernel: [ 699.935507] Mem-info:
Apr 2 15:32:46 b3 kernel: [ 699.937762] Normal per-cpu:
Apr 2 15:32:46 b3 kernel: [ 699.940537] CPU 0: hi: 186, btch: 31 usd: 8
Apr 2 15:32:46 b3 kernel: [ 699.945316] active_anon:18286 inactive_anon:21991 isolated_anon:0
Apr 2 15:32:46 b3 kernel: [ 699.945322] active_file:37485 inactive_file:39059 isolated_file:0
Apr 2 15:32:46 b3 kernel: [ 699.945328] unevictable:0 dirty:4856 writeback:0 unstable:0
Apr 2 15:32:46 b3 kernel: [ 699.945334] free:959 slab_reclaimable:6666 slab_unreclaimable:2621
Apr 2 15:32:46 b3 kernel: [ 699.945340] mapped:6697 shmem:1173 pagetables:590 bounce:0
Apr 2 15:32:46 b3 kernel: [ 699.974958] Normal free:3836kB min:2884kB low:3604kB high:4324kB active_anon:73144kB inactive_anon:87964kB active_file:149940kB inactive_file:156236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:520192kB mlocked:0kB dirty:19424kB writeback:0kB mapped:26788kB shmem:4692kB slab_reclaimable:26664kB slab_unreclaimable:10484kB kernel_stack:944kB pagetables:2360kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Apr 2 15:32:46 b3 kernel: [ 700.015003] lowmem_reserve[]: 0 0
Apr 2 15:32:46 b3 kernel: [ 700.018321] Normal: 905*4kB 5*8kB 3*16kB 2*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3836kB
Apr 2 15:32:46 b3 kernel: [ 700.028715] 77728 total pagecache pages
Apr 2 15:32:46 b3 kernel: [ 700.032526] 9 pages in swap cache
Apr 2 15:32:46 b3 kernel: [ 700.035819] Swap cache stats: add 15, delete 6, find 0/0
Apr 2 15:32:46 b3 kernel: [ 700.041105] Free swap = 1047488kB
Apr 2 15:32:46 b3 kernel: [ 700.044483] Total swap = 1047548kB
Apr 2 15:32:46 b3 kernel: [ 700.061797] 131072 pages of RAM
Apr 2 15:32:46 b3 kernel: [ 700.064916] 1283 free pages
Apr 2 15:32:46 b3 kernel: [ 700.067690] 2261 reserved pages
Apr 2 15:32:46 b3 kernel: [ 700.070809] 5540 slab pages
Apr 2 15:32:46 b3 kernel: [ 700.073583] 78876 pages shared
Apr 2 15:32:46 b3 kernel: [ 700.076616] 9 pages swap cached
Apr 2 15:32:46 b3 kernel: [ 700.079738] SLUB: Unable to allocate memory on node -1 (gfp=0x20)
Apr 2 15:32:46 b3 kernel: [ 700.085803] cache: kmalloc-8192, object size: 8192, buffer size: 8192, default order: 3, min order: 1
Apr 2 15:32:46 b3 kernel: [ 700.095151] node 0: slabs: 181, objs: 724, free: 0
Apr 2 15:32:46 b3 kernel: [ 700.100126] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.104409] mysqld: page allocation failure. order:1, mode:0x4020
Apr 2 15:32:46 b3 kernel: [ 700.110476] Backtrace:
Apr 2 15:32:46 b3 kernel: [ 700.112931] [<c00326ec>] (dump_backtrace+0x0/0x10c) from [<c0366e8c>] (dump_stack+0x18/0x1c)
Apr 2 15:32:46 b3 kernel: [ 700.121342] r6:00000000 r5:00000000 r4:00000000
Apr 2 15:32:46 b3 kernel: [ 700.125970] [<c0366e74>] (dump_stack+0x0/0x1c) from [<c007d550>] (__alloc_pages_nodemask+0x448/0x660)
Apr 2 15:32:46 b3 kernel: [ 700.135157] [<c007d108>] (__alloc_pages_nodemask+0x0/0x660) from [<c00a2d5c>] (new_slab+0x240/0x278)
Apr 2 15:32:46 b3 kernel: [ 700.144259] [<c00a2b1c>] (new_slab+0x0/0x278) from [<c00a2ef8>] (__slab_alloc+0x164/0x25c)
Apr 2 15:32:46 b3 kernel: [ 700.152492] [<c00a2d94>] (__slab_alloc+0x0/0x25c) from [<c00a309c>] (__kmalloc_track_caller+0xac/0xd8)
Apr 2 15:32:46 b3 kernel: [ 700.161763] [<c00a2ff0>] (__kmalloc_track_caller+0x0/0xd8) from [<c02bb0f8>] (__alloc_skb+0x5c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 700.170856] r8:bf00e078 r7:00000020 r6:00000f60 r5:cfcd2c00 r4:df802180
Apr 2 15:32:46 b3 kernel: [ 700.177587] [<c02bb09c>] (__alloc_skb+0x0/0xf4) from [<bf00e078>] (ath_rxbuf_alloc+0x30/0x98 [ath])
Apr 2 15:32:46 b3 kernel: [ 700.186623] [<bf00e048>] (ath_rxbuf_alloc+0x0/0x98 [ath]) from [<bf0f0eb8>] (ath_rx_tasklet+0x7a0/0x1dbc [ath9k])
Apr 2 15:32:46 b3 kernel: [ 700.196836] r7:00000000 r6:df164e80 r5:dfbb46d8 r4:274a8aa7
Apr 2 15:32:46 b3 kernel: [ 700.202536] [<bf0f0718>] (ath_rx_tasklet+0x0/0x1dbc [ath9k]) from [<bf0efe00>] (ath9k_tasklet+0x70/0x148 [ath9k])
Apr 2 15:32:46 b3 kernel: [ 700.212773] [<bf0efd90>] (ath9k_tasklet+0x0/0x148 [ath9k]) from [<c0044c60>] (tasklet_action+0x7c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 700.222124] r6:c047c2c0 r5:c045a6ec r4:00000000
Apr 2 15:32:46 b3 kernel: [ 700.226753] [<c0044be4>] (tasklet_action+0x0/0xf4) from [<c0045338>] (__do_softirq+0x90/0x14c)
Apr 2 15:32:46 b3 kernel: [ 700.235326] r7:c047c29c r6:00000006 r5:00000001 r4:00000018
Apr 2 15:32:46 b3 kernel: [ 700.241000] [<c00452a8>] (__do_softirq+0x0/0x14c) from [<c0045478>] (irq_exit+0x84/0x94)
Apr 2 15:32:46 b3 kernel: [ 700.249061] [<c00453f4>] (irq_exit+0x0/0x94) from [<c002e054>] (asm_do_IRQ+0x54/0xa4)
Apr 2 15:32:46 b3 kernel: [ 700.256862] [<c002e000>] (asm_do_IRQ+0x0/0xa4) from [<c002ee24>] (__irq_usr+0x44/0xa0)
Apr 2 15:32:46 b3 kernel: [ 700.264745] Exception stack(0xdb71bfb0 to 0xdb71bff8)
Apr 2 15:32:46 b3 kernel: [ 700.269777] bfa0: 00000000 00000000 01374c00 00000000
Apr 2 15:32:46 b3 kernel: [ 700.277917] bfc0: 40c02a38 40c02aa0 00000000 00000000 00000000 46437f38 00001000 40c02aa0
Apr 2 15:32:46 b3 kernel: [ 700.286064] bfe0: 00000000 433f67d0 40615da4 40615e64 20000010 ffffffff
Apr 2 15:32:46 b3 kernel: [ 700.292644] r6:00000016 r5:fed20200 r4:ffffffff
Apr 2 15:32:46 b3 kernel: [ 700.297263] Mem-info:
Apr 2 15:32:46 b3 kernel: [ 700.299518] Normal per-cpu:
Apr 2 15:32:46 b3 kernel: [ 700.302294] CPU 0: hi: 186, btch: 31 usd: 8
Apr 2 15:32:46 b3 kernel: [ 700.307073] active_anon:18286 inactive_anon:21991 isolated_anon:0
Apr 2 15:32:46 b3 kernel: [ 700.307079] active_file:37485 inactive_file:39059 isolated_file:0
Apr 2 15:32:46 b3 kernel: [ 700.307085] unevictable:0 dirty:4856 writeback:0 unstable:0
Apr 2 15:32:46 b3 kernel: [ 700.307090] free:959 slab_reclaimable:6666 slab_unreclaimable:2621
Apr 2 15:32:46 b3 kernel: [ 700.307096] mapped:6697 shmem:1173 pagetables:590 bounce:0
Apr 2 15:32:46 b3 kernel: [ 700.336716] Normal free:3836kB min:2884kB low:3604kB high:4324kB active_anon:73144kB inactive_anon:87964kB active_file:149940kB inactive_file:156236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:520192kB mlocked:0kB dirty:19424kB writeback:0kB mapped:26788kB shmem:4692kB slab_reclaimable:26664kB slab_unreclaimable:10484kB kernel_stack:944kB pagetables:2360kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Apr 2 15:32:46 b3 kernel: [ 700.376760] lowmem_reserve[]: 0 0
Apr 2 15:32:46 b3 kernel: [ 700.380078] Normal: 905*4kB 5*8kB 3*16kB 2*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3836kB
Apr 2 15:32:46 b3 kernel: [ 700.390473] 77728 total pagecache pages
Apr 2 15:32:46 b3 kernel: [ 700.394283] 9 pages in swap cache
Apr 2 15:32:46 b3 kernel: [ 700.397576] Swap cache stats: add 15, delete 6, find 0/0
Apr 2 15:32:46 b3 kernel: [ 700.402862] Free swap = 1047488kB
Apr 2 15:32:46 b3 kernel: [ 700.406240] Total swap = 1047548kB
Apr 2 15:32:46 b3 kernel: [ 700.423685] 131072 pages of RAM
Apr 2 15:32:46 b3 kernel: [ 700.426803] 1283 free pages
Apr 2 15:32:46 b3 kernel: [ 700.429576] 2261 reserved pages
Apr 2 15:32:46 b3 kernel: [ 700.432695] 5540 slab pages
Apr 2 15:32:46 b3 kernel: [ 700.435469] 78876 pages shared
Apr 2 15:32:46 b3 kernel: [ 700.438501] 9 pages swap cached
Apr 2 15:32:46 b3 kernel: [ 700.441624] SLUB: Unable to allocate memory on node -1 (gfp=0x20)
Apr 2 15:32:46 b3 kernel: [ 700.447690] cache: kmalloc-8192, object size: 8192, buffer size: 8192, default order: 3, min order: 1
Apr 2 15:32:46 b3 kernel: [ 700.457037] node 0: slabs: 181, objs: 724, free: 0
Apr 2 15:32:46 b3 kernel: [ 700.462013] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.466295] mysqld: page allocation failure. order:1, mode:0x4020
Apr 2 15:32:46 b3 kernel: [ 700.472362] Backtrace:
Apr 2 15:32:46 b3 kernel: [ 700.474819] [<c00326ec>] (dump_backtrace+0x0/0x10c) from [<c0366e8c>] (dump_stack+0x18/0x1c)
Apr 2 15:32:46 b3 kernel: [ 700.483221] r6:00000000 r5:00000000 r4:00000000
Apr 2 15:32:46 b3 kernel: [ 700.487848] [<c0366e74>] (dump_stack+0x0/0x1c) from [<c007d550>] (__alloc_pages_nodemask+0x448/0x660)
Apr 2 15:32:46 b3 kernel: [ 700.497034] [<c007d108>] (__alloc_pages_nodemask+0x0/0x660) from [<c00a2d5c>] (new_slab+0x240/0x278)
Apr 2 15:32:46 b3 kernel: [ 700.506128] [<c00a2b1c>] (new_slab+0x0/0x278) from [<c00a2ef8>] (__slab_alloc+0x164/0x25c)
Apr 2 15:32:46 b3 kernel: [ 700.514360] [<c00a2d94>] (__slab_alloc+0x0/0x25c) from [<c00a309c>] (__kmalloc_track_caller+0xac/0xd8)
Apr 2 15:32:46 b3 kernel: [ 700.523633] [<c00a2ff0>] (__kmalloc_track_caller+0x0/0xd8) from [<c02bb0f8>] (__alloc_skb+0x5c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 700.532724] r8:bf00e078 r7:00000020 r6:00000f60 r5:cfcd2c00 r4:df802180
Apr 2 15:32:46 b3 kernel: [ 700.539458] [<c02bb09c>] (__alloc_skb+0x0/0xf4) from [<bf00e078>] (ath_rxbuf_alloc+0x30/0x98 [ath])
Apr 2 15:32:46 b3 kernel: [ 700.548503] [<bf00e048>] (ath_rxbuf_alloc+0x0/0x98 [ath]) from [<bf0f0eb8>] (ath_rx_tasklet+0x7a0/0x1dbc [ath9k])
Apr 2 15:32:46 b3 kernel: [ 700.558721] r7:00000000 r6:df164e80 r5:dfbb4498 r4:274a8aa7
Apr 2 15:32:46 b3 kernel: [ 700.564423] [<bf0f0718>] (ath_rx_tasklet+0x0/0x1dbc [ath9k]) from [<bf0efe00>] (ath9k_tasklet+0x70/0x148 [ath9k])
Apr 2 15:32:46 b3 kernel: [ 700.574660] [<bf0efd90>] (ath9k_tasklet+0x0/0x148 [ath9k]) from [<c0044c60>] (tasklet_action+0x7c/0xf4)
Apr 2 15:32:46 b3 kernel: [ 700.584011] r6:c047c2c0 r5:c045a6ec r4:00000000
Apr 2 15:32:46 b3 kernel: [ 700.588640] [<c0044be4>] (tasklet_action+0x0/0xf4) from [<c0045338>] (__do_softirq+0x90/0x14c)
Apr 2 15:32:46 b3 kernel: [ 700.597213] r7:c047c29c r6:00000006 r5:00000001 r4:00000018
Apr 2 15:32:46 b3 kernel: [ 700.602886] [<c00452a8>] (__do_softirq+0x0/0x14c) from [<c0045478>] (irq_exit+0x84/0x94)
Apr 2 15:32:46 b3 kernel: [ 700.610947] [<c00453f4>] (irq_exit+0x0/0x94) from [<c002e054>] (asm_do_IRQ+0x54/0xa4)
Apr 2 15:32:46 b3 kernel: [ 700.618748] [<c002e000>] (asm_do_IRQ+0x0/0xa4) from [<c002ee24>] (__irq_usr+0x44/0xa0)
Apr 2 15:32:46 b3 kernel: [ 700.626631] Exception stack(0xdb71bfb0 to 0xdb71bff8)
Apr 2 15:32:46 b3 kernel: [ 700.631663] bfa0: 00000000 00000000 01374c00 00000000
Apr 2 15:32:46 b3 kernel: [ 700.639804] bfc0: 40c02a38 40c02aa0 00000000 00000000 00000000 46437f38 00001000 40c02aa0
Apr 2 15:32:46 b3 kernel: [ 700.647950] bfe0: 00000000 433f67d0 40615da4 40615e64 20000010 ffffffff
Apr 2 15:32:46 b3 kernel: [ 700.654530] r6:00000016 r5:fed20200 r4:ffffffff
Apr 2 15:32:46 b3 kernel: [ 700.659149] Mem-info:
Apr 2 15:32:46 b3 kernel: [ 700.661406] Normal per-cpu:
Apr 2 15:32:46 b3 kernel: [ 700.664181] CPU 0: hi: 186, btch: 31 usd: 8
Apr 2 15:32:46 b3 kernel: [ 700.668959] active_anon:18286 inactive_anon:21991 isolated_anon:0
Apr 2 15:32:46 b3 kernel: [ 700.668965] active_file:37485 inactive_file:39059 isolated_file:0
Apr 2 15:32:46 b3 kernel: [ 700.668971] unevictable:0 dirty:4856 writeback:0 unstable:0
Apr 2 15:32:46 b3 kernel: [ 700.668977] free:959 slab_reclaimable:6666 slab_unreclaimable:2621
Apr 2 15:32:46 b3 kernel: [ 700.668983] mapped:6697 shmem:1173 pagetables:590 bounce:0
Apr 2 15:32:46 b3 kernel: [ 700.698602] Normal free:3836kB min:2884kB low:3604kB high:4324kB active_anon:73144kB inactive_anon:87964kB active_file:149940kB inactive_file:156236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:520192kB mlocked:0kB dirty:19424kB writeback:0kB mapped:26788kB shmem:4692kB slab_reclaimable:26664kB slab_unreclaimable:10484kB kernel_stack:944kB pagetables:2360kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Apr 2 15:32:46 b3 kernel: [ 700.738646] lowmem_reserve[]: 0 0
Apr 2 15:32:46 b3 kernel: [ 700.741964] Normal: 905*4kB 5*8kB 3*16kB 2*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3836kB
Apr 2 15:32:46 b3 kernel: [ 700.752358] 77728 total pagecache pages
Apr 2 15:32:46 b3 kernel: [ 700.756169] 9 pages in swap cache
Apr 2 15:32:46 b3 kernel: [ 700.759462] Swap cache stats: add 15, delete 6, find 0/0
Apr 2 15:32:46 b3 kernel: [ 700.764749] Free swap = 1047488kB
Apr 2 15:32:46 b3 kernel: [ 700.768126] Total swap = 1047548kB
Apr 2 15:32:46 b3 kernel: [ 700.785570] 131072 pages of RAM
Apr 2 15:32:46 b3 kernel: [ 700.788690] 1283 free pages
Apr 2 15:32:46 b3 kernel: [ 700.791463] 2261 reserved pages
Apr 2 15:32:46 b3 kernel: [ 700.794582] 5540 slab pages
Apr 2 15:32:46 b3 kernel: [ 700.797355] 78876 pages shared
Apr 2 15:32:46 b3 kernel: [ 700.800388] 9 pages swap cached
Apr 2 15:32:46 b3 kernel: [ 700.803510] SLUB: Unable to allocate memory on node -1 (gfp=0x20)
Apr 2 15:32:46 b3 kernel: [ 700.809577] cache: kmalloc-8192, object size: 8192, buffer size: 8192, default order: 3, min order: 1
Apr 2 15:32:46 b3 kernel: [ 700.818924] node 0: slabs: 181, objs: 724, free: 0
Apr 2 15:32:46 b3 kernel: [ 700.823906] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.828186] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.832443] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.836710] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.840961] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.845223] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.849480] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.853744] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.858012] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.862270] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.866537] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.870794] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.875056] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.879314] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.883574] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.887828] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.892093] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.896354] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.900611] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.904873] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.909153] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.913417] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.917691] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.921949] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.926217] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.930471] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.934733] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.938990] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.943251] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.947509] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.951760] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.956021] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.960279] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.964540] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.968798] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.973060] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.977318] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.981568] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.985829] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.990087] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.994348] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 700.998799] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.003426] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.007679] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.011928] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.016238] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.020491] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.024786] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.029924] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.034245] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.038501] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.043072] skbuff alloc of size 3872 failed
Apr 2 15:32:46 b3 kernel: [ 701.047328] skbuff alloc of size 3872 failed
Apr 2 15:32:57 b3 hostapd: wlan0: STA 00:16:17:9d:4e:a1 IEEE 802.11: authenticated
Apr 2 15:32:57 b3 hostapd: wlan0: STA 00:16:17:9d:4e:a1 IEEE 802.11: associated (aid 1)
Apr 2 15:32:57 b3 hostapd: wlan0: STA 00:16:17:9d:4e:a1 RADIUS: starting accounting session 4D9722E8-00000007

Has anyone any idea?

Thanks.

[Ubi]

Would your problem be like this known issue:
http://forum.excito.net/viewtopic.php?f ... 27&p=14020

[cedric_r]

It could be, although the error messages are different. I'll use the same fix and see if it works.

Thanks for that.