Re: [lwip-users] LWIP crash

[Martin Velek]

Hello,

I cannot help with your problem, instead of this I can help you, how
you could receive some answers.

- Enable debug in LWIP by  #define LWIP_DEBUG 1 and define some debug
output message. This log send in a file as the enclosure.
- Write your version of LWIP (e.g. 1.4.0, ...)
- Send a capture from wireshark as the enclosure.
- Send a piece of code or describe exactly when the "crash" occurs to
reproduce it.

Regards
Martin


On Mon, Sep 3, 2012 at 1:02 PM, Anil kumar <address@hidden> wrote:
> Some debugging using prints is indicating that this crash is resulting when
> the available send buffer size reaches zero. The send buffer size in my
> opt.h is 32KB and the packet sizes generated by the application is 128.
>
> The available send buffer reaching zero indicates any leaks ?
>
> Thanks,
> Anil
>
>
>
>
>
> On Fri, Aug 31, 2012 at 5:13 PM, Anil kumar <address@hidden> wrote:
>>
>> Hi All,
>>
>> We are using LWIP on linux platform. When we are testing it is crashing
>> repeatedly with the following crash dump.
>> Any help in this regard would be very much helpful.
>>
>>
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495042] *pde = 1bd04067
>> *pte = 00000000
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495110] Modules linked in:
>> lwip(O) ops(O) complib(O) rfcomm bnep bluetooth binfmt_misc i915
>> drm_kms_helper dr
>> m ppdev snd_hda_codec_realtek parport_pc snd_hda_intel snd_hda_codec
>> snd_hwdep i2c_algo_bit video snd_pcm snd_seq_midi snd_rawmidi psmouse
>> serio_raw snd_seq
>> _midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc
>> lp parport 8139too 8139cp r8169
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495424]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495439] Pid: 2913, comm:
>> tcpip_input_tim Tainted: G           O 3.2.2 #3                  /DG41RQ
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495504] EIP:
>> 0060:[<c12a1f2d>] EFLAGS: 00010212 CPU: 1
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495541] EIP is at
>> memcpy+0x1d/0x40
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495568] EAX: f947c78a EBX:
>> 00000064 ECX: 00000019 EDX: 0811f550
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495607] ESI: 0811f550 EDI:
>> f947c78a EBP: dbffde18 ESP: dbffde0c
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495644]  DS: 007b ES: 007b
>> FS: 00d8 GS: 00e0 SS: 0068
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495739]  00000064 f947c78a
>> 0811f550 dbffde3c f92ea0fe f92f6db4 f947c78a 0811f550
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495809]  00000064 f947c2d0
>> 00000064 f92fb930 dbffdeb8 f92f21de f92f9303 f947c78a
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495879]  0811f550 00000000
>> 00000056 c1901496 0000de66 00000064 205b0246 32313620
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.495983]  [<f92ea0fe>]
>> lwip_chksum_copy+0x3e/0x60 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92f21de>]
>> tcp_write+0x66e/0x990 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e6f74>]
>> do_writemore+0x164/0x370 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e73c0>] ?
>> poll_tcp+0xb0/0xb0 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e743f>]
>> sent_tcp+0x7f/0xc0 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92eef67>] ?
>> tcp_parseopt.isra.0+0x27/0xe0 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e73c0>] ?
>> poll_tcp+0xb0/0xb0 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92ef5d5>]
>> tcp_input+0x5b5/0xf30 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92eb562>]
>> ip_input+0x2b2/0x2d0 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e959b>]
>> ethernet_input+0x7b/0x330 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c1026288>] ?
>> default_spin_lock_flags+0x8/0x10
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c156fdbd>] ?
>> _raw_spin_lock_irqsave+0x2d/0x40
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c106ba19>] ?
>> down+0x29/0x40
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e8220>] ?
>> pbuf_free_int+0x10/0x10 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e831c>]
>> tcpip_thread+0xfc/0x160 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<f92e8220>] ?
>> pbuf_free_int+0x10/0x10 [lwip]
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c1065dcd>]
>> kthread+0x6d/0x80
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c1065d60>] ?
>> flush_kthread_worker+0x80/0x80
>> Aug 31 15:52:13 neelima-desktop kernel: [  612.496003]  [<c1576efe>]
>> kernel_thread_helper+0x6/0x10
>> Aug 31 15:52:14 neelima-desktop kernel: [  612.557620] ---[ end trace
>> 333a796a57491d86 ]---
>>
>> Thanks,
>> Anil
>
>
>
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