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 ]---