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 <[email protected]> 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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