1、the host directly link to the storage device，by intel ixgbe NIC; between them, no switch or router. 2、the nic of the storage device suddenly become unused and then OK after a little time, this happened frequency. 3、the host printk a lot of message like these:
The kernel is SUSE 3.0.13, use slab, and the following log shows the page still have PG_slab when free_pages(). Does anyone have seen the problem? Jul 9 11:31:36 root kernel: [1042291.977565] BUG: Bad page state in process swapper pfn:00bf2 Jul 9 11:31:36 root kernel: [1042291.977568] page:ffffea0000029cf0 count:0 mapcount:0 mapping: (null) index:0x7f6d4f500 Jul 9 11:31:36 root kernel: [1042291.977571] page flags: 0x40000000000100(slab) // here is the reason Jul 9 11:31:36 root kernel: [1042291.977574] Pid: 0, comm: swapper Tainted: G B X 3.0.13-0.27-default #1 Jul 9 11:31:36 root kernel: [1042291.977577] Call Trace: Jul 9 11:31:36 root kernel: [1042291.977583] [<ffffffff810048b5>] dump_trace+0x75/0x300 Jul 9 11:31:36 root kernel: [1042291.977639] [<ffffffff8143ea0f>] dump_stack+0x69/0x6f Jul 9 11:31:36 root kernel: [1042291.977644] [<ffffffff810f53a1>] bad_page+0xb1/0x120 Jul 9 11:31:37 root kernel: [1042291.977649] [<ffffffff810f5926>] free_pages_prepare+0xe6/0x110 Jul 9 11:31:37 root kernel: [1042291.977654] [<ffffffff810f9259>] free_hot_cold_page+0x49/0x1f0 Jul 9 11:31:37 root kernel: [1042291.977660] [<ffffffff8137a3b4>] skb_release_data+0xb4/0xe0 Jul 9 11:31:37 root kernel: [1042291.977665] [<ffffffff81379e79>] __kfree_skb+0x9/0x90 Jul 9 11:31:37 root kernel: [1042291.977676] [<ffffffffa02784a9>] ixgbe_clean_tx_irq+0xa9/0x480 [ixgbe] Jul 9 11:31:37 root kernel: [1042291.977693] [<ffffffffa02788cb>] ixgbe_poll+0x4b/0x1a0 [ixgbe] Jul 9 11:31:37 root kernel: [1042291.977705] [<ffffffff81389c3a>] net_rx_action+0x10a/0x2c0 Jul 9 11:31:37 root kernel: [1042291.977711] [<ffffffff81060a1f>] __do_softirq+0xef/0x220 Jul 9 11:31:37 root kernel: [1042291.977716] [<ffffffff8144a8bc>] call_softirq+0x1c/0x30 Jul 9 11:31:37 root kernel: [1042291.978974] DWARF2 unwinder stuck at call_softirq+0x1c/0x30 Thanks, Xishi Qiu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
