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Message-ID: <cccedfc60711061222o6c4599fcyf71265c126568395@mail.gmail.com> Date: Tue, 6 Nov 2007 14:22:30 -0600 From: "Jon Nelson" <jnelson-linux-raid@...poni.net> To: netdev@...r.kernel.org Subject: Stack Trace. Bad? [linux-raid was also emailed this same information] I was testing some network throughput today and ran into this. I should note that I've this motherboard has 2x MCP55 Ethernet and one of them works fine and the other one gives lots and lots of frame errors under load. The following is only an harmless informational message. Unless you get a _continuous_flood_ of these messages it means everything is working fine. Allocations from irqs cannot be perfectly reliable and the kernel is designed to handle that. md0_raid5: page allocation failure. order:2, mode:0x20 Call Trace: <IRQ> [<ffffffff802684c2>] __alloc_pages+0x324/0x33d [<ffffffff80283147>] kmem_getpages+0x66/0x116 [<ffffffff8028367a>] fallback_alloc+0x104/0x174 [<ffffffff80283330>] kmem_cache_alloc_node+0x9c/0xa8 [<ffffffff80396984>] __alloc_skb+0x65/0x138 [<ffffffff8821d82a>] :forcedeth:nv_alloc_rx_optimized+0x4d/0x18f [<ffffffff88220fca>] :forcedeth:nv_napi_poll+0x61f/0x71c [<ffffffff8039ce93>] net_rx_action+0xb2/0x1c5 [<ffffffff8023625e>] __do_softirq+0x65/0xce [<ffffffff8020adbc>] call_softirq+0x1c/0x28 [<ffffffff8020bef5>] do_softirq+0x2c/0x7d [<ffffffff8020c180>] do_IRQ+0xb6/0xd6 [<ffffffff8020a141>] ret_from_intr+0x0/0xa <EOI> [<ffffffff80265d8e>] mempool_free_slab+0x0/0xe [<ffffffff803fac0b>] _spin_unlock_irqrestore+0x8/0x9 [<ffffffff803892d8>] bitmap_daemon_work+0xee/0x2f3 [<ffffffff80386571>] md_check_recovery+0x22/0x4b9 [<ffffffff88118e10>] :raid456:raid5d+0x1b/0x3a2 [<ffffffff8023978b>] del_timer_sync+0xc/0x16 [<ffffffff803f98db>] schedule_timeout+0x92/0xad [<ffffffff80239612>] process_timeout+0x0/0x5 [<ffffffff803f98ce>] schedule_timeout+0x85/0xad [<ffffffff80387e62>] md_thread+0xf2/0x10e [<ffffffff80243353>] autoremove_wake_function+0x0/0x2e [<ffffffff80387d70>] md_thread+0x0/0x10e [<ffffffff8024322c>] kthread+0x47/0x73 [<ffffffff8020aa48>] child_rip+0xa/0x12 [<ffffffff802431e5>] kthread+0x0/0x73 [<ffffffff8020aa3e>] child_rip+0x0/0x12 Mem-info: Node 0 DMA per-cpu: CPU 0: Hot: hi: 0, btch: 1 usd: 0 Cold: hi: 0, btch: 1 usd: 0 CPU 1: Hot: hi: 0, btch: 1 usd: 0 Cold: hi: 0, btch: 1 usd: 0 Node 0 DMA32 per-cpu: CPU 0: Hot: hi: 186, btch: 31 usd: 115 Cold: hi: 62, btch: 15 usd: 31 CPU 1: Hot: hi: 186, btch: 31 usd: 128 Cold: hi: 62, btch: 15 usd: 56 Active:111696 inactive:116497 dirty:31 writeback:0 unstable:0 free:1850 slab:19676 mapped:3608 pagetables:1217 bounce:0 Node 0 DMA free:3988kB min:40kB low:48kB high:60kB active:232kB inactive:5496kB present:10692kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 994 994 Node 0 DMA32 free:3412kB min:4012kB low:5012kB high:6016kB active:446552kB inactive:460492kB present:1018020kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 Node 0 DMA: 29*4kB 2*8kB 1*16kB 0*32kB 0*64kB 0*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 3988kB Node 0 DMA32: 419*4kB 147*8kB 19*16kB 0*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3476kB Swap cache: add 57, delete 57, find 0/0, race 0+0 Free swap = 979608kB Total swap = 979832kB Free swap: 979608kB 262128 pages of RAM 4938 reserved pages 108367 pages shared 0 pages swap cached -- Jon - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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