Occasional kernel warning message errors

carlopmart carlopmart at gmail.com
Mon May 26 11:16:38 UTC 2008


Hi all,

  I have an ubuntu 8.04 server based install using -virtual kernel under VMWare 
server 2. Some times kernel displays this error:

  [12593.035178] WARNING: at 
/build/buildd/linux-2.6.24/net/ipv4/tcp_output.c:1799 tcp_simple_retransmit()
[12593.035194] Pid: 0, comm: swapper Not tainted 2.6.24-16-virtual #1
[12593.035225]  [<c02dc3a5>] tcp_simple_retransmit+0x1f5/0x200
[12593.035238]  [<c02e158b>] tcp_v4_err+0x4eb/0x5a0
[12593.035244]  [<c02c217b>] ip_rt_frag_needed+0x6b/0x230
[12593.035252]  [<c02ea77a>] icmp_unreach+0x13a/0x3a0
[12593.035257]  [<c029bf7f>] skb_checksum+0x4f/0x2c0
[12593.035264]  [<c02e1dfd>] tcp_v4_rcv+0x7bd/0x9a0
[12593.035270]  [<c029ef18>] __skb_checksum_complete_head+0x18/0x60
[12593.035276]  [<c02e9db2>] icmp_rcv+0xe2/0x170
[12593.035280]  [<c02c39c9>] ip_local_deliver_finish+0xf9/0x210
[12593.035286]  [<c02c365f>] ip_rcv_finish+0xff/0x370
[12593.035292]  [<c010ae84>] sched_clock+0x14/0x40
[12593.035299]  [<c0189bc1>] __kmalloc_track_caller+0x71/0x110
[12593.035304]  [<c0188f72>] kmem_cache_alloc+0x52/0xc0
[12593.035309]  [<c029e202>] __netdev_alloc_skb+0x22/0x50
[12593.035315]  [<c02c3bd0>] ip_rcv+0x0/0x290
[12593.035320]  [<c02a2859>] netif_receive_skb+0x379/0x440
[12593.035326]  [<d89082f5>] e1000_clean_rx_irq+0x155/0x4f0 [e1000]
[12593.035338]  [<d8908208>] e1000_clean_rx_irq+0x68/0x4f0 [e1000]
[12593.035350]  [<d89081a0>] e1000_clean_rx_irq+0x0/0x4f0 [e1000]
[12593.035359]  [<d89055ce>] e1000_clean+0x5e/0x260 [e1000]
[12593.035370]  [<c02a4bfd>] net_rx_action+0x12d/0x210
[12593.035375]  [<c01223f6>] __update_rq_clock+0x26/0x170
[12593.035382]  [<c01316e2>] __do_softirq+0x82/0x110
[12593.035388]  [<c01317c5>] do_softirq+0x55/0x60
[12593.035392]  [<c0131abd>] irq_exit+0x6d/0x80
[12593.035396]  [<c0106f10>] do_IRQ+0x40/0x70
[12593.035402]  [<c0105403>] common_interrupt+0x23/0x30
[12593.035407]  [<c0102f30>] default_idle+0x0/0x60
[12593.035412]  [<c0102f6d>] default_idle+0x3d/0x60
[12593.035417]  [<c0102695>] cpu_idle+0x45/0xd0
[12593.035422]  [<c0403a4a>] start_kernel+0x30a/0x3a0
[12593.035428]  [<c0403130>] unknown_bootoption+0x0/0x1e0
[12593.035434]  =======================
[12593.539905] WARNING: at /build/buildd/linux-2.6.24/net/ipv4/tcp_input.c:1675 
tcp_enter_frto()
[12593.539924] Pid: 0, comm: swapper Not tainted 2.6.24-16-virtual #1
[12593.539937]  [<c02d7401>] tcp_enter_frto+0x281/0x290
[12593.539951]  [<c02dd3f6>] tcp_write_timer+0x326/0x6f0
[12593.539960]  [<c0149e58>] tick_program_event+0x38/0x60
[12593.539968]  [<c01355d9>] run_timer_softirq+0x169/0x1e0
[12593.539975]  [<c02dd0d0>] tcp_write_timer+0x0/0x6f0
[12593.539984]  [<c02dd0d0>] tcp_write_timer+0x0/0x6f0
[12593.539991]  [<c01316e2>] __do_softirq+0x82/0x110
[12593.540003]  [<c01317c5>] do_softirq+0x55/0x60
[12593.540008]  [<c0131abd>] irq_exit+0x6d/0x80
[12593.540024]  [<c0106f10>] do_IRQ+0x40/0x70
[12593.540031]  [<c0105403>] common_interrupt+0x23/0x30
[12593.540036]  [<c0102f30>] default_idle+0x0/0x60
[12593.540042]  [<c0102f6d>] default_idle+0x3d/0x60
[12593.540047]  [<c0102695>] cpu_idle+0x45/0xd0
[12593.540051]  [<c0403a4a>] start_kernel+0x30a/0x3a0
[12593.540057]  [<c0403130>] unknown_bootoption+0x0/0x1e0
[12593.540063]  =======================

  I can't find any entry about this problem (only this thread: 
https://lists.ubuntu.com/archives/kubuntu-users/2008-May/028065.html). Maybe a 
ubuntu kernel bug??

-- 
CL Martinez
carlopmart {at} gmail {d0t} com




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