* WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive
@ 2011-05-17 12:52 Denys Fedoryshchenko
2011-05-17 13:16 ` Eric Dumazet
0 siblings, 1 reply; 4+ messages in thread
From: Denys Fedoryshchenko @ 2011-05-17 12:52 UTC (permalink / raw)
To: netdev
Hi
Just tried some non-standard pedit rules to modify tcp data, and got
WARNING almost instantly.
Maybe it is just invalid pedit, but probably will be interesting. My
idea was to modify outgoing tcp window size,
rules was not complete by mistake, but got that warning.
Rules
tc qdisc del dev eth1 root
tc qdisc add dev eth1 root handle 1: htb default 1
tc class add dev eth1 parent 1: classid 1:1 htb rate 900Mbit ceil
900Mbit burst 10000 cburst 10000 quantum 60000
tc qdisc add dev eth1 parent 1:1 handle 11 pfifo limit 10000
tc filter add dev eth1 prio 1 protocol ip parent 1: \
u32 match ip protocol 0x06 0xff match ip dport 80 0x2000 flowid 1:1 \
match u16 0x0000 0xffff at 34 action gact ok
tc filter add dev eth1 prio 1 protocol ip parent 1: \
u32 match ip protocol 0x06 0xff match ip dport 80 0x2000 flowid 1:1 \
action pedit munge offset 34 u16 set 0x2000 \
pipe csum ip and tcp
Warning:
2298.298075] GACT probability on
[ 2298.369166] ------------[ cut here ]------------
[ 2298.369175] WARNING: at net/core/dev.c:1876
skb_gso_segment+0x156/0x2b8()
[ 2298.369178] Hardware name: RS700-E6/ERS4
[ 2298.369181] igb: caps=(0x21143b3, 0x0) len=11636 data_len=0
ip_summed=0
[ 2298.369184] Modules linked in: act_gact act_csum act_pedit cls_u32
sch_htb ipv6 i2c_i801 i7core_edac i2c_core edac_core rtc_cmos igb e1000e
rtc_core rtc_lib iTCO_wdt ghes hed button
[ 2298.369200] Pid: 0, comm: swapper Not tainted 2.6.39-rc7-insat #1
[ 2298.369203] Call Trace:
[ 2298.369205] <IRQ> [<ffffffff810338cf>]
warn_slowpath_common+0x80/0x98
[ 2298.369218] [<ffffffff8103397b>] warn_slowpath_fmt+0x41/0x43
[ 2298.369222] [<ffffffff8132a10d>] skb_gso_segment+0x156/0x2b8
[ 2298.369227] [<ffffffff8132a700>] dev_hard_start_xmit+0x37c/0x522
[ 2298.369233] [<ffffffff81341135>] sch_direct_xmit+0x67/0x18d
[ 2298.369237] [<ffffffff81341365>] __qdisc_run+0x10a/0x126
[ 2298.369241] [<ffffffff8132ac39>] dev_queue_xmit+0x393/0x4c3
[ 2298.369247] [<ffffffff81332a8a>] neigh_resolve_output+0x28f/0x2ed
[ 2298.369250] [<ffffffff8134b8da>] ? nf_hook_slow+0x6d/0x108
[ 2298.369253] [<ffffffff81357ec4>] ? ip_options_build+0x143/0x143
[ 2298.369255] [<ffffffff8135a964>] ip_finish_output+0x260/0x2a3
[ 2298.369257] [<ffffffff8135aa4d>] ip_output+0xa6/0xad
[ 2298.369258] [<ffffffff81359d79>] ? __ip_local_out+0x9c/0x9e
[ 2298.369260] [<ffffffff81359d9f>] ip_local_out+0x24/0x28
[ 2298.369262] [<ffffffff8135a31c>] ip_queue_xmit+0x2dd/0x328
[ 2298.369265] [<ffffffff8131fcd5>] ? __skb_clone+0x29/0xf2
[ 2298.369268] [<ffffffff8136bbd4>] tcp_transmit_skb+0x74d/0x78b
[ 2298.369270] [<ffffffff8136e389>] tcp_write_xmit+0x806/0x8f5
[ 2298.369272] [<ffffffff8136b04f>] ?
tcp_established_options+0x2e/0xa9
[ 2298.369274] [<ffffffff8136e4c9>]
__tcp_push_pending_frames+0x20/0x7c
[ 2298.369276] [<ffffffff8136a685>] tcp_rcv_established+0x104/0x60f
[ 2298.369278] [<ffffffff81371696>] tcp_v4_do_rcv+0x1ba/0x377
[ 2298.369283] [<ffffffff81173e9f>] ? security_sock_rcv_skb+0x11/0x13
[ 2298.369284] [<ffffffff81371d6f>] tcp_v4_rcv+0x51c/0x869
[ 2298.369287] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
[ 2298.369289] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
[ 2298.369291] [<ffffffff81355cac>]
ip_local_deliver_finish+0x178/0x235
[ 2298.369293] [<ffffffff81355ddb>] ip_local_deliver+0x72/0x79
[ 2298.369295] [<ffffffff81355880>] ip_rcv_finish+0x2dc/0x306
[ 2298.369297] [<ffffffff81355b06>] ip_rcv+0x25c/0x28a
[ 2298.369299] [<ffffffff81329536>] __netif_receive_skb+0x4b8/0x4ea
[ 2298.369301] [<ffffffff81329778>] netif_receive_skb+0x67/0x6e
[ 2298.369303] [<ffffffff81329861>] napi_skb_finish+0x24/0x3b
[ 2298.369305] [<ffffffff81329d44>] napi_gro_receive+0xa8/0xad
[ 2298.369309] [<ffffffffa003668f>] igb_poll+0x783/0xaaa [igb]
[ 2298.369314] [<ffffffff81213d16>] ? put_device+0x12/0x14
[ 2298.369317] [<ffffffff81226e3d>] ? scsi_next_command+0x3e/0x46
[ 2298.369319] [<ffffffff81329e79>] net_rx_action+0xa3/0x1bb
[ 2298.369322] [<ffffffff81038537>] __do_softirq+0x83/0x114
[ 2298.369324] [<ffffffff813babcc>] call_softirq+0x1c/0x30
[ 2298.369328] [<ffffffff81003e0f>] do_softirq+0x33/0x68
[ 2298.369329] [<ffffffff810383d4>] irq_exit+0x3f/0x88
[ 2298.369331] [<ffffffff810036f6>] do_IRQ+0x98/0xaf
[ 2298.369334] [<ffffffff813b9453>] common_interrupt+0x13/0x13
[ 2298.369335] <EOI> [<ffffffff8104d2d7>] ?
__hrtimer_start_range_ns+0x2a3/0x2b5
[ 2298.369343] [<ffffffff811c05a9>] ? intel_idle+0xc3/0xe9
[ 2298.369345] [<ffffffff811c058c>] ? intel_idle+0xa6/0xe9
[ 2298.369348] [<ffffffff813097cb>] cpuidle_idle_call+0x94/0xcd
[ 2298.369350] [<ffffffff81001c47>] cpu_idle+0x5a/0x91
[ 2298.369353] [<ffffffff813a5564>] rest_init+0x68/0x6a
[ 2298.369356] [<ffffffff8160d930>] start_kernel+0x2f3/0x2fe
[ 2298.369358] [<ffffffff8160d085>]
x86_64_start_reservations+0x82/0x86
[ 2298.369360] [<ffffffff8160d172>] x86_64_start_kernel+0xe9/0xf0
[ 2298.369361] ---[ end trace 408f79c72c45f490 ]---
[ 2298.369807] ------------[ cut here ]------------
[ 2298.369809] WARNING: at net/core/dev.c:1876
skb_gso_segment+0x156/0x2b8()
[ 2298.369810] Hardware name: RS700-E6/ERS4
[ 2298.369811] igb: caps=(0x21143b3, 0x0) len=2948 data_len=0
ip_summed=0
[ 2298.369812] Modules linked in: act_gact act_csum act_pedit cls_u32
sch_htb ipv6 i2c_i801 i7core_edac i2c_core edac_core rtc_cmos igb e1000e
rtc_core rtc_lib iTCO_wdt ghes hed button
[ 2298.369818] Pid: 5867, comm: syslog-ng Tainted: G W
2.6.39-rc7-insat #1
[ 2298.369819] Call Trace:
[ 2298.369820] <IRQ> [<ffffffff810338cf>]
warn_slowpath_common+0x80/0x98
[ 2298.369824] [<ffffffff8103397b>] warn_slowpath_fmt+0x41/0x43
[ 2298.369826] [<ffffffff8132a10d>] skb_gso_segment+0x156/0x2b8
[ 2298.369828] [<ffffffff8132a700>] dev_hard_start_xmit+0x37c/0x522
[ 2298.369830] [<ffffffff81341135>] sch_direct_xmit+0x67/0x18d
[ 2298.369831] [<ffffffff81341365>] __qdisc_run+0x10a/0x126
[ 2298.369833] [<ffffffff8132ac39>] dev_queue_xmit+0x393/0x4c3
[ 2298.369835] [<ffffffff81332a8a>] neigh_resolve_output+0x28f/0x2ed
[ 2298.369837] [<ffffffff8134b8da>] ? nf_hook_slow+0x6d/0x108
[ 2298.369838] [<ffffffff81357ec4>] ? ip_options_build+0x143/0x143
[ 2298.369840] [<ffffffff8135a964>] ip_finish_output+0x260/0x2a3
[ 2298.369841] [<ffffffff8135aa4d>] ip_output+0xa6/0xad
[ 2298.369843] [<ffffffff81359d79>] ? __ip_local_out+0x9c/0x9e
[ 2298.369844] [<ffffffff81359d9f>] ip_local_out+0x24/0x28
[ 2298.369846] [<ffffffff8135a31c>] ip_queue_xmit+0x2dd/0x328
[ 2298.369848] [<ffffffff8131fcd5>] ? __skb_clone+0x29/0xf2
[ 2298.369850] [<ffffffff8136bbd4>] tcp_transmit_skb+0x74d/0x78b
[ 2298.369852] [<ffffffff8136e389>] tcp_write_xmit+0x806/0x8f5
[ 2298.369854] [<ffffffff8136b04f>] ?
tcp_established_options+0x2e/0xa9
[ 2298.369856] [<ffffffff8136e4c9>]
__tcp_push_pending_frames+0x20/0x7c
[ 2298.369857] [<ffffffff8136a685>] tcp_rcv_established+0x104/0x60f
[ 2298.369859] [<ffffffff81371696>] tcp_v4_do_rcv+0x1ba/0x377
[ 2298.369861] [<ffffffff81173e9f>] ? security_sock_rcv_skb+0x11/0x13
[ 2298.369863] [<ffffffff81371d6f>] tcp_v4_rcv+0x51c/0x869
[ 2298.369865] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
[ 2298.369867] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
[ 2298.369869] [<ffffffff81355cac>]
ip_local_deliver_finish+0x178/0x235
[ 2298.369870] [<ffffffff81355ddb>] ip_local_deliver+0x72/0x79
[ 2298.369872] [<ffffffff81355880>] ip_rcv_finish+0x2dc/0x306
[ 2298.369874] [<ffffffff81355b06>] ip_rcv+0x25c/0x28a
[ 2298.369876] [<ffffffff81329536>] __netif_receive_skb+0x4b8/0x4ea
[ 2298.369878] [<ffffffff81329778>] netif_receive_skb+0x67/0x6e
[ 2298.369879] [<ffffffff81329861>] napi_skb_finish+0x24/0x3b
[ 2298.369881] [<ffffffff81329d44>] napi_gro_receive+0xa8/0xad
[ 2298.369884] [<ffffffffa003668f>] igb_poll+0x783/0xaaa [igb]
[ 2298.369886] [<ffffffff8100e0d3>] ? x86_pmu_enable+0x1fc/0x263
[ 2298.369889] [<ffffffff810794cb>] ? perf_ctx_adjust_freq+0x29/0x10a
[ 2298.369890] [<ffffffff81329e79>] net_rx_action+0xa3/0x1bb
[ 2298.369893] [<ffffffff8106f3d4>] ?
__rcu_process_callbacks+0x75/0x265
[ 2298.369895] [<ffffffff81038537>] __do_softirq+0x83/0x114
[ 2298.369897] [<ffffffff813babcc>] call_softirq+0x1c/0x30
[ 2298.369899] [<ffffffff81003e0f>] do_softirq+0x33/0x68
[ 2298.369900] [<ffffffff810383d4>] irq_exit+0x3f/0x88
[ 2298.369902] [<ffffffff810036f6>] do_IRQ+0x98/0xaf
[ 2298.369904] [<ffffffff813b9453>] common_interrupt+0x13/0x13
[ 2298.369905] <EOI> [<ffffffff8104dc74>] ?
atomic_notifier_call_chain+0x13/0x15
[ 2298.369910] [<ffffffff81202714>] ? do_con_write+0x57b/0x1db7
[ 2298.369912] [<ffffffff812025eb>] ? do_con_write+0x452/0x1db7
[ 2298.369913] [<ffffffff810340da>] ? console_unlock+0x170/0x19a
[ 2298.369915] [<ffffffff811ff9b0>] ? con_flush_chars+0x3e/0x43
[ 2298.369917] [<ffffffff8104daa8>] ? up+0x34/0x39
[ 2298.369918] [<ffffffff81203f97>] con_write+0x11/0x26
[ 2298.369920] [<ffffffff8104a0c5>] ? add_wait_queue+0x3f/0x46
[ 2298.369923] [<ffffffff811f3896>] n_tty_write+0x239/0x35a
[ 2298.369925] [<ffffffff8102f2a9>] ? try_to_wake_up+0x240/0x240
[ 2298.369926] [<ffffffff811f0b13>] tty_write+0x19d/0x22f
[ 2298.369928] [<ffffffff811f365d>] ? n_tty_ioctl+0xab/0xab
[ 2298.369931] [<ffffffff810b3e82>] vfs_write+0xae/0x133
[ 2298.369933] [<ffffffff810b3fc0>] sys_write+0x45/0x6c
[ 2298.369935] [<ffffffff813b9a7b>] system_call_fastpath+0x16/0x1b
[ 2298.369936] ---[ end trace 408f79c72c45f491 ]---
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive
2011-05-17 12:52 WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive Denys Fedoryshchenko
@ 2011-05-17 13:16 ` Eric Dumazet
2011-05-17 13:25 ` Denys Fedoryshchenko
2011-05-17 13:31 ` Denys Fedoryshchenko
0 siblings, 2 replies; 4+ messages in thread
From: Eric Dumazet @ 2011-05-17 13:16 UTC (permalink / raw)
To: Denys Fedoryshchenko; +Cc: netdev
Le mardi 17 mai 2011 à 15:52 +0300, Denys Fedoryshchenko a écrit :
> Hi
>
> Just tried some non-standard pedit rules to modify tcp data, and got
> WARNING almost instantly.
> Maybe it is just invalid pedit, but probably will be interesting. My
> idea was to modify outgoing tcp window size,
> rules was not complete by mistake, but got that warning.
>
> Rules
> tc qdisc del dev eth1 root
> tc qdisc add dev eth1 root handle 1: htb default 1
> tc class add dev eth1 parent 1: classid 1:1 htb rate 900Mbit ceil
> 900Mbit burst 10000 cburst 10000 quantum 60000
> tc qdisc add dev eth1 parent 1:1 handle 11 pfifo limit 10000
>
> tc filter add dev eth1 prio 1 protocol ip parent 1: \
> u32 match ip protocol 0x06 0xff match ip dport 80 0x2000 flowid 1:1 \
> match u16 0x0000 0xffff at 34 action gact ok
>
> tc filter add dev eth1 prio 1 protocol ip parent 1: \
> u32 match ip protocol 0x06 0xff match ip dport 80 0x2000 flowid 1:1 \
> action pedit munge offset 34 u16 set 0x2000 \
> pipe csum ip and tcp
>
> Warning:
>
>
> 2298.298075] GACT probability on
> [ 2298.369166] ------------[ cut here ]------------
> [ 2298.369175] WARNING: at net/core/dev.c:1876
> skb_gso_segment+0x156/0x2b8()
> [ 2298.369178] Hardware name: RS700-E6/ERS4
> [ 2298.369181] igb: caps=(0x21143b3, 0x0) len=11636 data_len=0
> ip_summed=0
> [ 2298.369184] Modules linked in: act_gact act_csum act_pedit cls_u32
> sch_htb ipv6 i2c_i801 i7core_edac i2c_core edac_core rtc_cmos igb e1000e
> rtc_core rtc_lib iTCO_wdt ghes hed button
> [ 2298.369200] Pid: 0, comm: swapper Not tainted 2.6.39-rc7-insat #1
> [ 2298.369203] Call Trace:
> [ 2298.369205] <IRQ> [<ffffffff810338cf>]
> warn_slowpath_common+0x80/0x98
> [ 2298.369218] [<ffffffff8103397b>] warn_slowpath_fmt+0x41/0x43
> [ 2298.369222] [<ffffffff8132a10d>] skb_gso_segment+0x156/0x2b8
> [ 2298.369227] [<ffffffff8132a700>] dev_hard_start_xmit+0x37c/0x522
> [ 2298.369233] [<ffffffff81341135>] sch_direct_xmit+0x67/0x18d
> [ 2298.369237] [<ffffffff81341365>] __qdisc_run+0x10a/0x126
> [ 2298.369241] [<ffffffff8132ac39>] dev_queue_xmit+0x393/0x4c3
> [ 2298.369247] [<ffffffff81332a8a>] neigh_resolve_output+0x28f/0x2ed
> [ 2298.369250] [<ffffffff8134b8da>] ? nf_hook_slow+0x6d/0x108
> [ 2298.369253] [<ffffffff81357ec4>] ? ip_options_build+0x143/0x143
> [ 2298.369255] [<ffffffff8135a964>] ip_finish_output+0x260/0x2a3
> [ 2298.369257] [<ffffffff8135aa4d>] ip_output+0xa6/0xad
> [ 2298.369258] [<ffffffff81359d79>] ? __ip_local_out+0x9c/0x9e
> [ 2298.369260] [<ffffffff81359d9f>] ip_local_out+0x24/0x28
> [ 2298.369262] [<ffffffff8135a31c>] ip_queue_xmit+0x2dd/0x328
> [ 2298.369265] [<ffffffff8131fcd5>] ? __skb_clone+0x29/0xf2
> [ 2298.369268] [<ffffffff8136bbd4>] tcp_transmit_skb+0x74d/0x78b
> [ 2298.369270] [<ffffffff8136e389>] tcp_write_xmit+0x806/0x8f5
> [ 2298.369272] [<ffffffff8136b04f>] ?
> tcp_established_options+0x2e/0xa9
> [ 2298.369274] [<ffffffff8136e4c9>]
> __tcp_push_pending_frames+0x20/0x7c
> [ 2298.369276] [<ffffffff8136a685>] tcp_rcv_established+0x104/0x60f
> [ 2298.369278] [<ffffffff81371696>] tcp_v4_do_rcv+0x1ba/0x377
> [ 2298.369283] [<ffffffff81173e9f>] ? security_sock_rcv_skb+0x11/0x13
> [ 2298.369284] [<ffffffff81371d6f>] tcp_v4_rcv+0x51c/0x869
> [ 2298.369287] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
> [ 2298.369289] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
> [ 2298.369291] [<ffffffff81355cac>]
> ip_local_deliver_finish+0x178/0x235
> [ 2298.369293] [<ffffffff81355ddb>] ip_local_deliver+0x72/0x79
> [ 2298.369295] [<ffffffff81355880>] ip_rcv_finish+0x2dc/0x306
> [ 2298.369297] [<ffffffff81355b06>] ip_rcv+0x25c/0x28a
> [ 2298.369299] [<ffffffff81329536>] __netif_receive_skb+0x4b8/0x4ea
> [ 2298.369301] [<ffffffff81329778>] netif_receive_skb+0x67/0x6e
> [ 2298.369303] [<ffffffff81329861>] napi_skb_finish+0x24/0x3b
> [ 2298.369305] [<ffffffff81329d44>] napi_gro_receive+0xa8/0xad
> [ 2298.369309] [<ffffffffa003668f>] igb_poll+0x783/0xaaa [igb]
> [ 2298.369314] [<ffffffff81213d16>] ? put_device+0x12/0x14
> [ 2298.369317] [<ffffffff81226e3d>] ? scsi_next_command+0x3e/0x46
> [ 2298.369319] [<ffffffff81329e79>] net_rx_action+0xa3/0x1bb
> [ 2298.369322] [<ffffffff81038537>] __do_softirq+0x83/0x114
> [ 2298.369324] [<ffffffff813babcc>] call_softirq+0x1c/0x30
> [ 2298.369328] [<ffffffff81003e0f>] do_softirq+0x33/0x68
> [ 2298.369329] [<ffffffff810383d4>] irq_exit+0x3f/0x88
> [ 2298.369331] [<ffffffff810036f6>] do_IRQ+0x98/0xaf
> [ 2298.369334] [<ffffffff813b9453>] common_interrupt+0x13/0x13
> [ 2298.369335] <EOI> [<ffffffff8104d2d7>] ?
> __hrtimer_start_range_ns+0x2a3/0x2b5
> [ 2298.369343] [<ffffffff811c05a9>] ? intel_idle+0xc3/0xe9
> [ 2298.369345] [<ffffffff811c058c>] ? intel_idle+0xa6/0xe9
> [ 2298.369348] [<ffffffff813097cb>] cpuidle_idle_call+0x94/0xcd
> [ 2298.369350] [<ffffffff81001c47>] cpu_idle+0x5a/0x91
> [ 2298.369353] [<ffffffff813a5564>] rest_init+0x68/0x6a
> [ 2298.369356] [<ffffffff8160d930>] start_kernel+0x2f3/0x2fe
> [ 2298.369358] [<ffffffff8160d085>]
> x86_64_start_reservations+0x82/0x86
> [ 2298.369360] [<ffffffff8160d172>] x86_64_start_kernel+0xe9/0xf0
> [ 2298.369361] ---[ end trace 408f79c72c45f490 ]---
> [ 2298.369807] ------------[ cut here ]------------
> [ 2298.369809] WARNING: at net/core/dev.c:1876
> skb_gso_segment+0x156/0x2b8()
> [ 2298.369810] Hardware name: RS700-E6/ERS4
> [ 2298.369811] igb: caps=(0x21143b3, 0x0) len=2948 data_len=0
> ip_summed=0
> [ 2298.369812] Modules linked in: act_gact act_csum act_pedit cls_u32
> sch_htb ipv6 i2c_i801 i7core_edac i2c_core edac_core rtc_cmos igb e1000e
> rtc_core rtc_lib iTCO_wdt ghes hed button
> [ 2298.369818] Pid: 5867, comm: syslog-ng Tainted: G W
> 2.6.39-rc7-insat #1
> [ 2298.369819] Call Trace:
> [ 2298.369820] <IRQ> [<ffffffff810338cf>]
> warn_slowpath_common+0x80/0x98
> [ 2298.369824] [<ffffffff8103397b>] warn_slowpath_fmt+0x41/0x43
> [ 2298.369826] [<ffffffff8132a10d>] skb_gso_segment+0x156/0x2b8
> [ 2298.369828] [<ffffffff8132a700>] dev_hard_start_xmit+0x37c/0x522
> [ 2298.369830] [<ffffffff81341135>] sch_direct_xmit+0x67/0x18d
> [ 2298.369831] [<ffffffff81341365>] __qdisc_run+0x10a/0x126
> [ 2298.369833] [<ffffffff8132ac39>] dev_queue_xmit+0x393/0x4c3
> [ 2298.369835] [<ffffffff81332a8a>] neigh_resolve_output+0x28f/0x2ed
> [ 2298.369837] [<ffffffff8134b8da>] ? nf_hook_slow+0x6d/0x108
> [ 2298.369838] [<ffffffff81357ec4>] ? ip_options_build+0x143/0x143
> [ 2298.369840] [<ffffffff8135a964>] ip_finish_output+0x260/0x2a3
> [ 2298.369841] [<ffffffff8135aa4d>] ip_output+0xa6/0xad
> [ 2298.369843] [<ffffffff81359d79>] ? __ip_local_out+0x9c/0x9e
> [ 2298.369844] [<ffffffff81359d9f>] ip_local_out+0x24/0x28
> [ 2298.369846] [<ffffffff8135a31c>] ip_queue_xmit+0x2dd/0x328
> [ 2298.369848] [<ffffffff8131fcd5>] ? __skb_clone+0x29/0xf2
> [ 2298.369850] [<ffffffff8136bbd4>] tcp_transmit_skb+0x74d/0x78b
> [ 2298.369852] [<ffffffff8136e389>] tcp_write_xmit+0x806/0x8f5
> [ 2298.369854] [<ffffffff8136b04f>] ?
> tcp_established_options+0x2e/0xa9
> [ 2298.369856] [<ffffffff8136e4c9>]
> __tcp_push_pending_frames+0x20/0x7c
> [ 2298.369857] [<ffffffff8136a685>] tcp_rcv_established+0x104/0x60f
> [ 2298.369859] [<ffffffff81371696>] tcp_v4_do_rcv+0x1ba/0x377
> [ 2298.369861] [<ffffffff81173e9f>] ? security_sock_rcv_skb+0x11/0x13
> [ 2298.369863] [<ffffffff81371d6f>] tcp_v4_rcv+0x51c/0x869
> [ 2298.369865] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
> [ 2298.369867] [<ffffffff81355b34>] ? ip_rcv+0x28a/0x28a
> [ 2298.369869] [<ffffffff81355cac>]
> ip_local_deliver_finish+0x178/0x235
> [ 2298.369870] [<ffffffff81355ddb>] ip_local_deliver+0x72/0x79
> [ 2298.369872] [<ffffffff81355880>] ip_rcv_finish+0x2dc/0x306
> [ 2298.369874] [<ffffffff81355b06>] ip_rcv+0x25c/0x28a
> [ 2298.369876] [<ffffffff81329536>] __netif_receive_skb+0x4b8/0x4ea
> [ 2298.369878] [<ffffffff81329778>] netif_receive_skb+0x67/0x6e
> [ 2298.369879] [<ffffffff81329861>] napi_skb_finish+0x24/0x3b
> [ 2298.369881] [<ffffffff81329d44>] napi_gro_receive+0xa8/0xad
> [ 2298.369884] [<ffffffffa003668f>] igb_poll+0x783/0xaaa [igb]
> [ 2298.369886] [<ffffffff8100e0d3>] ? x86_pmu_enable+0x1fc/0x263
> [ 2298.369889] [<ffffffff810794cb>] ? perf_ctx_adjust_freq+0x29/0x10a
> [ 2298.369890] [<ffffffff81329e79>] net_rx_action+0xa3/0x1bb
> [ 2298.369893] [<ffffffff8106f3d4>] ?
> __rcu_process_callbacks+0x75/0x265
> [ 2298.369895] [<ffffffff81038537>] __do_softirq+0x83/0x114
> [ 2298.369897] [<ffffffff813babcc>] call_softirq+0x1c/0x30
> [ 2298.369899] [<ffffffff81003e0f>] do_softirq+0x33/0x68
> [ 2298.369900] [<ffffffff810383d4>] irq_exit+0x3f/0x88
> [ 2298.369902] [<ffffffff810036f6>] do_IRQ+0x98/0xaf
> [ 2298.369904] [<ffffffff813b9453>] common_interrupt+0x13/0x13
> [ 2298.369905] <EOI> [<ffffffff8104dc74>] ?
> atomic_notifier_call_chain+0x13/0x15
> [ 2298.369910] [<ffffffff81202714>] ? do_con_write+0x57b/0x1db7
> [ 2298.369912] [<ffffffff812025eb>] ? do_con_write+0x452/0x1db7
> [ 2298.369913] [<ffffffff810340da>] ? console_unlock+0x170/0x19a
> [ 2298.369915] [<ffffffff811ff9b0>] ? con_flush_chars+0x3e/0x43
> [ 2298.369917] [<ffffffff8104daa8>] ? up+0x34/0x39
> [ 2298.369918] [<ffffffff81203f97>] con_write+0x11/0x26
> [ 2298.369920] [<ffffffff8104a0c5>] ? add_wait_queue+0x3f/0x46
> [ 2298.369923] [<ffffffff811f3896>] n_tty_write+0x239/0x35a
> [ 2298.369925] [<ffffffff8102f2a9>] ? try_to_wake_up+0x240/0x240
> [ 2298.369926] [<ffffffff811f0b13>] tty_write+0x19d/0x22f
> [ 2298.369928] [<ffffffff811f365d>] ? n_tty_ioctl+0xab/0xab
> [ 2298.369931] [<ffffffff810b3e82>] vfs_write+0xae/0x133
> [ 2298.369933] [<ffffffff810b3fc0>] sys_write+0x45/0x6c
> [ 2298.369935] [<ffffffff813b9a7b>] system_call_fastpath+0x16/0x1b
> [ 2298.369936] ---[ end trace 408f79c72c45f491 ]---
>
> --
Hi Denys
net/sched/act_csum.c sets skb->ip_summed = CHECKSUM_NONE; after csum
changes.
and skb_gso_segment() barfs if skb->ip_summed != CHECKSUM_PARTIAL
You could disable GRO for the time being.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive
2011-05-17 13:16 ` Eric Dumazet
@ 2011-05-17 13:25 ` Denys Fedoryshchenko
2011-05-17 13:31 ` Denys Fedoryshchenko
1 sibling, 0 replies; 4+ messages in thread
From: Denys Fedoryshchenko @ 2011-05-17 13:25 UTC (permalink / raw)
To: Eric Dumazet; +Cc: netdev
>>
>> --
>
> Hi Denys
>
> net/sched/act_csum.c sets skb->ip_summed = CHECKSUM_NONE; after csum
> changes.
>
> and skb_gso_segment() barfs if skb->ip_summed != CHECKSUM_PARTIAL
>
> You could disable GRO for the time being.
Thanks a lot, i will, it is just test.
By the way, is it a bug and it will be fixed, or pedit is not intended
to be (ab)used like that?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive
2011-05-17 13:16 ` Eric Dumazet
2011-05-17 13:25 ` Denys Fedoryshchenko
@ 2011-05-17 13:31 ` Denys Fedoryshchenko
1 sibling, 0 replies; 4+ messages in thread
From: Denys Fedoryshchenko @ 2011-05-17 13:31 UTC (permalink / raw)
To: Eric Dumazet; +Cc: netdev
On Tue, 17 May 2011 15:16:35 +0200, Eric Dumazet wrote:
>
> Hi Denys
>
> net/sched/act_csum.c sets skb->ip_summed = CHECKSUM_NONE; after csum
> changes.
>
> and skb_gso_segment() barfs if skb->ip_summed != CHECKSUM_PARTIAL
>
> You could disable GRO for the time being.
It seems mistake from my side, seems, csum was not being called, i
forgot to add pipe before csum.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-05-17 13:32 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-05-17 12:52 WARNING, net/core/dev.c, skb_gso_segment, 2.6.39-rc7-git11 inclusive Denys Fedoryshchenko
2011-05-17 13:16 ` Eric Dumazet
2011-05-17 13:25 ` Denys Fedoryshchenko
2011-05-17 13:31 ` Denys Fedoryshchenko
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