Herbert,
Does the warning below look like a symptom of the bug you fixed with
this commit?
commit 622e0ca1cd4d459f5af4f2c65f4dc0dd823cb4c3
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu May 20 23:07:56 2010 -0700
gro: Fix bogus gso_size on the first fraglist entry
Ben.
On Tue, 2010-09-14 at 13:01 +0400, Boris Savelev wrote:
[...]
> At one night I received 2 GB size kern.log with repeated messages:
>
> Sep 14 11:25:18 buildbot2 kernel: [85054.424096] ------------[ cut here
> ]------------
> Sep 14 11:25:18 buildbot2 kernel: [85054.424157] WARNING: at /build/buildd-
> linux-2.6_2.6.32-21-amd64-bEMv9E/linux-2.6-2.6.32/debian/build/so
> urce_amd64_xen/net/core/dev.c:1582 skb_gso_segment+0x109/0x263()
> Sep 14 11:25:18 buildbot2 kernel: [85054.424298] Hardware name: S5500WB
> Sep 14 11:25:18 buildbot2 kernel: [85054.424344] tun: caps=(0x0, 0x0) len=1500
> data_len=0 ip_summed=0
> Sep 14 11:25:18 buildbot2 kernel: [85054.424368] Modules linked in: xt_physdev
> tun nfs lockd fscache nfs_acl auth_rpcgss sunrpc ipt_MASQUERA
> DE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack
> ipt_REJECT xt_tcpudp bridge stp ip6table_filter ip6_tables ipta
> ble_filter ip_tables x_tables xen_evtchn xenfs fuse ext2 loop snd_pcm snd_timer
> snd soundcore snd_page_alloc i2c_i801 i2c_core joydev evdev
> pcspkr ioatdma button processor acpi_processor ext3 jbd mbcache dm_mod sg
> usbhid hid sr_mod cdrom sd_mod crc_t10dif ata_generic uhci_hcd ata
> _piix libata ehci_hcd usbcore nls_base aacraid scsi_mod thermal igb thermal_sys
> dca [last unloaded: scsi_wait_scan]
> Sep 14 11:25:18 buildbot2 kernel: [85054.425199] Pid: 0, comm: swapper Tainted:
> G W 2.6.32-5-xen-amd64 #1
> Sep 14 11:25:18 buildbot2 kernel: [85054.425257] Call Trace:
> Sep 14 11:25:18 buildbot2 kernel: [85054.425300] <IRQ> [<ffffffff8125e3e1>] ?
> skb_gso_segment+0x109/0x263
> Sep 14 11:25:18 buildbot2 kernel: [85054.425364] [<ffffffff8125e3e1>] ?
> skb_gso_segment+0x109/0x263
> Sep 14 11:25:18 buildbot2 kernel: [85054.425422] [<ffffffff8104ea3c>] ?
> warn_slowpath_common+0x77/0xa3
> Sep 14 11:25:18 buildbot2 kernel: [85054.425480] [<ffffffff8104eac4>] ?
> warn_slowpath_fmt+0x51/0x59
> Sep 14 11:25:18 buildbot2 kernel: [85054.425537] [<ffffffff812565bc>] ?
> pskb_expand_head+0xe9/0x16d
> Sep 14 11:25:18 buildbot2 kernel: [85054.425593] [<ffffffff812573a1>] ?
> skb_segment+0x267/0x4d4
> Sep 14 11:25:18 buildbot2 kernel: [85054.425650] [<ffffffff812689fc>] ?
> inet_proto_csum_replace4+0x38/0xb2
> Sep 14 11:25:18 buildbot2 kernel: [85054.425710] [<ffffffffa02a4579>] ?
> tun_get_drvinfo+0x3c/0x76 [tun]
> Sep 14 11:25:18 buildbot2 kernel: [85054.425767] [<ffffffff8125e3e1>] ?
> skb_gso_segment+0x109/0x263
> Sep 14 11:25:18 buildbot2 kernel: [85054.425823] [<ffffffff8125e6eb>] ?
> dev_hard_start_xmit+0x1b0/0x2b8
> Sep 14 11:25:18 buildbot2 kernel: [85054.425882] [<ffffffff81271a70>] ?
> sch_direct_xmit+0x58/0x14c
> Sep 14 11:25:18 buildbot2 kernel: [85054.425938] [<ffffffff8125eb46>] ?
> dev_queue_xmit+0x252/0x38d
> Sep 14 11:25:18 buildbot2 kernel: [85054.425997] [<ffffffffa01dcc51>] ?
> br_dev_queue_push_xmit+0x75/0x79 [bridge]
> Sep 14 11:25:18 buildbot2 kernel: [85054.426058] [<ffffffffa01dc2c1>] ?
> br_dev_xmit+0x66/0x7d [bridge]
> Sep 14 11:25:18 buildbot2 kernel: [85054.426115] [<ffffffff8125e78e>] ?
> dev_hard_start_xmit+0x253/0x2b8
> Sep 14 11:25:18 buildbot2 kernel: [85054.426172] [<ffffffff8125ebd1>] ?
> dev_queue_xmit+0x2dd/0x38d
> Sep 14 11:25:18 buildbot2 kernel: [85054.426229] [<ffffffff81281903>] ?
> ip_rcv_finish+0x373/0x38d
> Sep 14 11:25:18 buildbot2 kernel: [85054.426283] [<ffffffff81281bbd>] ?
> ip_rcv+0x2a0/0x2ed
> Sep 14 11:25:18 buildbot2 kernel: [85054.426337] [<ffffffff8125ddf5>] ?
> dev_gro_receive+0xfd/0x224
> Sep 14 11:25:18 buildbot2 kernel: [85054.426394] [<ffffffff8119c633>] ?
> is_xen_swiotlb_buffer+0x4a/0x9d
> Sep 14 11:25:18 buildbot2 kernel: [85054.426451] [<ffffffff8125e03f>] ?
> napi_gro_receive+0x20/0x2e
> Sep 14 11:25:18 buildbot2 kernel: [85054.426511] [<ffffffffa0010693>] ?
> igb_poll+0x4e8/0x82f [igb]
> Sep 14 11:25:18 buildbot2 kernel: [85054.426569] [<ffffffff810fcff4>] ?
> pollwake+0x53/0x5b
> Sep 14 11:25:18 buildbot2 kernel: [85054.426622] [<ffffffff8125e16f>] ?
> net_rx_action+0xae/0x1c9
> Sep 14 11:25:18 buildbot2 kernel: [85054.426679] [<ffffffff810547cb>] ?
> __do_softirq+0xdd/0x1a2
> Sep 14 11:25:18 buildbot2 kernel: [85054.426736] [<ffffffff81012cac>] ?
> call_softirq+0x1c/0x30
> Sep 14 11:25:18 buildbot2 kernel: [85054.426791] [<ffffffff8101422b>] ?
> do_softirq+0x3f/0x7c
> Sep 14 11:25:18 buildbot2 kernel: [85054.426846] [<ffffffff8105463a>] ?
> irq_exit+0x36/0x76
> Sep 14 11:25:18 buildbot2 kernel: [85054.426900] [<ffffffff811f1155>] ?
> xen_evtchn_do_upcall+0x33/0x42
> Sep 14 11:25:18 buildbot2 kernel: [85054.426958] [<ffffffff81012cfe>] ?
> xen_do_hypervisor_callback+0x1e/0x30
> Sep 14 11:25:18 buildbot2 kernel: [85054.427014] <EOI> [<ffffffff810093aa>] ?
> hypercall_page+0x3aa/0x1001
> Sep 14 11:25:18 buildbot2 kernel: [85054.427078] [<ffffffff810093aa>] ?
> hypercall_page+0x3aa/0x1001
> Sep 14 11:25:18 buildbot2 kernel: [85054.427135] [<ffffffff8100eb8d>] ?
> xen_vcpuop_set_next_event+0x0/0x60
> Sep 14 11:25:18 buildbot2 kernel: [85054.427194] [<ffffffff8100e633>] ?
> xen_safe_halt+0xc/0x15
> Sep 14 11:25:18 buildbot2 kernel: [85054.427248] [<ffffffff8100bf3f>] ?
> xen_idle+0x37/0x40
> Sep 14 11:25:18 buildbot2 kernel: [85054.427301] [<ffffffff81010eb1>] ?
> cpu_idle+0xa2/0xda
> Sep 14 11:25:18 buildbot2 kernel: [85054.427356] [<ffffffff81506cd1>] ?
> start_kernel+0x3dc/0x3e8
> Sep 14 11:25:18 buildbot2 kernel: [85054.427411] [<ffffffff81508c7d>] ?
> xen_start_kernel+0x57c/0x581
> Sep 14 11:25:18 buildbot2 kernel: [85054.427466] ---[ end trace
> 9da64faa61cc18d7 ]---
>
>
> --
> Boris
>
>
>
--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
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