Kernel throwing exception once in a while
Hi,
I wasn't really sure which package to report this bug against, so
writing it to the lists.
This is happening randomly almost everyday. Not able to figure out why
Here's our uname -a
# uname -a
Linux <myhostnamewashere> 3.5.2-x86_64-linode26 #1 SMP Wed Aug 15
14:31:07 EDT 2012 x86_64 GNU/Linux
Sep 14 04:46:01 n4 kernel: ------------[ cut here ]------------
Sep 14 04:46:01 n4 kernel: WARNING: at net/core/skbuff.c:3414
skb_try_coalesce+0x1d7/0x2dd()
Sep 14 04:46:01 n4 kernel: Modules linked in:
Sep 14 04:46:01 n4 kernel: Pid: 0, comm: swapper/0 Not tainted
3.5.2-x86_64-linode26 #1
Sep 14 04:46:01 n4 kernel: Call Trace:
Sep 14 04:46:01 n4 kernel: <IRQ> [<ffffffff8103ba0e>]
warn_slowpath_common+0x80/0x98
Sep 14 04:46:01 n4 kernel: [<ffffffff8103ba3b>] warn_slowpath_null+0x15/0x17
Sep 14 04:46:01 n4 kernel: [<ffffffff8150448e>] skb_try_coalesce+0x1d7/0x2dd
Sep 14 04:46:01 n4 kernel: [<ffffffff81606836>] ? ip6t_do_table+0x3b5/0x3e3
Sep 14 04:46:01 n4 kernel: [<ffffffff8158b382>] tcp_try_coalesce+0x4c/0xa4
Sep 14 04:46:01 n4 kernel: [<ffffffff81042e0f>] ? local_bh_enable+0xd/0xf
Sep 14 04:46:01 n4 kernel: [<ffffffff8158b42c>] tcp_queue_rcv+0x52/0x9a
Sep 14 04:46:01 n4 kernel: [<ffffffff8158e7c6>] tcp_rcv_established+0x348/0x4e1
Sep 14 04:46:01 n4 kernel: [<ffffffff815fac47>] tcp_v6_do_rcv+0xbc/0x325
Sep 14 04:46:01 n4 kernel: [<ffffffff815fbed4>] tcp_v6_rcv+0x461/0x6fd
Sep 14 04:46:01 n4 kernel: [<ffffffff815de330>] ip6_input_finish+0x1e4/0x2b2
Sep 14 04:46:01 n4 kernel: [<ffffffff815de14c>] ? T.1042+0x4f/0x4f
Sep 14 04:46:01 n4 kernel: [<ffffffff815de44a>] T.1043+0x4c/0x53
Sep 14 04:46:01 n4 kernel: [<ffffffff815de0d0>] ? ip6_forward+0x5de/0x5de
Sep 14 04:46:01 n4 kernel: [<ffffffff815de75d>] ip6_input+0x1c/0x1e
Sep 14 04:46:01 n4 kernel: [<ffffffff815de0f9>] ip6_rcv_finish+0x29/0x2d
Sep 14 04:46:01 n4 kernel: [<ffffffff815de44a>] T.1043+0x4c/0x53
Sep 14 04:46:01 n4 kernel: [<ffffffff815de70d>] ipv6_rcv+0x2bc/0x2f0
Sep 14 04:46:01 n4 kernel: [<ffffffff815100fd>] __netif_receive_skb+0x379/0x3bb
Sep 14 04:46:01 n4 kernel: [<ffffffff8151038a>] netif_receive_skb+0x71/0x78
Sep 14 04:46:01 n4 kernel: [<ffffffff8146fb19>] handle_incoming_queue+0x7c/0x11a
Sep 14 04:46:01 n4 kernel: [<ffffffff814700fe>] xennet_poll+0x547/0x611
Sep 14 04:46:01 n4 kernel: [<ffffffff81510ba7>] net_rx_action+0xb6/0x22f
Sep 14 04:46:01 n4 kernel: [<ffffffff816b9a56>] ? _raw_spin_lock+0x9/0xd
Sep 14 04:46:01 n4 kernel: [<ffffffff813be772>] ? info_for_irq+0x9/0x19
Sep 14 04:46:01 n4 kernel: [<ffffffff81042f40>] __do_softirq+0xc8/0x1a4
Sep 14 04:46:01 n4 kernel: [<ffffffff810997ae>] ? handle_edge_irq+0xb8/0xca
Sep 14 04:46:01 n4 kernel: [<ffffffff816c199c>] call_softirq+0x1c/0x30
Sep 14 04:46:01 n4 kernel: [<ffffffff81010bc1>] do_softirq+0x41/0x7e
Sep 14 04:46:01 n4 kernel: [<ffffffff81042cfe>] irq_exit+0x44/0xb2
Sep 14 04:46:01 n4 kernel: [<ffffffff813bf61b>] xen_evtchn_do_upcall+0x2f/0x3d
Sep 14 04:46:01 n4 kernel: [<ffffffff816c19ee>]
xen_do_hypervisor_callback+0x1e/0x30
Sep 14 04:46:01 n4 kernel: <EOI> [<ffffffff810013aa>] ?
hypercall_page+0x3aa/0x1000
Sep 14 04:46:01 n4 kernel: [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000
Sep 14 04:46:01 n4 kernel: [<ffffffff81006aab>] ? xen_safe_halt+0x10/0x1a
Sep 14 04:46:01 n4 kernel: [<ffffffff81016330>] ? default_idle+0x4b/0x85
Sep 14 04:46:01 n4 kernel: [<ffffffff81015acc>] ? cpu_idle+0x65/0xa1
Sep 14 04:46:01 n4 kernel: [<ffffffff816acbe9>] ? rest_init+0x6d/0x6f
Sep 14 04:46:01 n4 kernel: [<ffffffff81cc1ca9>] ? start_kernel+0x34d/0x35a
Sep 14 04:46:01 n4 kernel: [<ffffffff81cc1791>] ? kernel_init+0x130/0x130
Sep 14 04:46:01 n4 kernel: [<ffffffff81cc12dd>] ?
x86_64_start_reservations+0xb8/0xbd
Sep 14 04:46:01 n4 kernel: [<ffffffff81cc4d80>] ? xen_start_kernel+0x568/0x56f
Sep 14 04:46:01 n4 kernel: ---[ end trace 0db5757b0051d5bf ]---
This is happening to 2 boxes where we have apache running on it and
they are identical (both in configuration and software .. managed via
puppet) to other apache servers which do not have this problem.
Any help/pointers is appreciated.
Thank you,
--
Krish
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