Hi, Please find attached the rtcap_panic serial console dump. I have tried a lot of different setups lately, but as far as I remember the latest stable rtcap I has been using was Ubuntu 9.04 RTAI 3.7.1 kernel 2.6.29.4.
Thanks a lot for your answers so far. I hope the dump can give you a clue of the problem. Best regards Henrik Slotholt On 08/05/2010 17:01 <mantega...@aero.polimi.it> wrote: > > Henrik Slotholt wrote: > > > Hi, > > > > > > I have been using the rtcap module with Wireshark for a while. > > > Lately I > > > upgraded to Ubuntu 10.04, RTAI 3.8.1 and kernel 2.6.32.11, > > With what versions, RTAI, kernel and RTNET, did it work? Asking for it > to > trace possible changes that might have caused a regressions. The > mentioned > combination of RTAI and kernel has been tested, up the the latest in > rtnet > repository, both with examples in RTAI showroom and rtnet, none of > which > uses rtcap though. > > paolo > > > when I insmod > > > the rtcap module the kernel freezes leaving only caps lock and > > > scroll > > > lock blinking. The console shows a kernel panic with a callstack > > > mainly > > > consisting of rtcap_signal_handler. I'm using the rt_via-rhine > > > driver on > > > a pico-itx. Have anyone expericenced the same problems, or have a > > > suggestion? > > > > (I assume your RTnet version is 0.9.12) > > > > Please post the oops (caught via serial console or netconsole). > > > > Jan > > > > > > -------------------------------------------------------------------- > > ---------- > > > > _______________________________________________ > > RTnet-users mailing list > > <RTnet-users@lists.sourceforge.net> > > <https://lists.sourceforge.net/lists/listinfo/rtnet-users> > >
[ 124.822763] BUG: unable to handle kernel NULL pointer dereference at 000000c0 [ 124.823023] IP: [<ddf5c15a>] rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] *pde = 09988067 *pte = 00000000 [ 124.823023] Oops: 0000 [#1] PREEMPT [ 124.823023] last sysfs file: /sys/devices/virtual/net/rtlo/flags [ 124.823023] Modules linked in: rt_via_rhine rtcap tdma rtudp rtipv4 rtpacket rt_loopback rtmac rtnet rtai_rtdm rtai_shm rtai_netrpc rtai_msg rtai_mbx rtai_sem rtai_fifos rtai_lxrt rtai_hal via binfmt_misc drm ppdev snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device fbcon tileblit font bitblit softcursor snd vga16fb soundcore vgastate via_agp snd_page_alloc lp rt3572sta i2c_viapro shpchp agpgart parport mii usbhid pata_via hid [last unloaded: via_rhine] [ 124.823023] [ 124.823023] Pid: 1242, comm: load_rtnet Not tainted (2.6.32.11+drm33.2-ubuntu-rtai38-via-c7 #1) CX700 [ 124.823023] EIP: 0060:[<ddf5c15a>] EFLAGS: 00010046 CPU: 0 [ 124.823023] EIP is at rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] EAX: 000000d8 EBX: c669e880 ECX: 00000000 EDX: 00000000 [ 124.823023] ESI: ddf5c110 EDI: 00000000 EBP: c8f7decc ESP: c8f7deac [ 124.823023] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 [ 124.823023] Process load_rtnet (pid: 1242, ti=c8f7c000 task=c6439980 task.ti=c8f7c000) [ 124.823023] I-pipe domain Linux [ 124.823023] Stack: [ 124.823023] 000000dc 00000002 dca4c608 c8f7ded4 00000000 c085b500 ddf5c110 00000000 [ 124.823023] <0> c8f7df34 c01900ca 00000025 00000000 c085b500 00000a00 00000000 ddf5c110 [ 124.823023] <0> 00000000 c8f7df34 00000025 0000007b 0000007b 00000000 000000e0 ffffffff [ 124.823023] Call Trace: [ 124.823023] [<dca4c608>] ? rtai_handle_isched_lock+0x18/0x20 [rtai_lxrt] [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] ? __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] ? __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057e815>] ? do_page_fault+0x255/0x420 [ 124.823023] [<c011c513>] ? __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c057c9c4>] ? error_code+0x70/0x80 [ 124.823023] Code: 00 00 8b 53 54 89 15 48 ca f5 dd 50 9d 8b 43 14 8b 40 34 89 45 e4 6b c0 6c 8b 90 c4 ca f5 dd 8b 88 60 ca f5 dd 89 55 f0 83 e2 fe <f6> 81 c0 00 00 00 01 0f 45 55 f0 f6 c2 02 89 55 f0 74 15 8b 80 [ 124.823023] EIP: [<ddf5c15a>] rtcap_signal_handler+0x4a/0x260 [rtcap] SS:ESP 0068:c8f7deac [ 124.823023] CR2: 00000000000000c0 [ 124.823023] ---[ end trace 9806bedd9156fe00 ]--- [ 124.823023] Kernel panic - not syncing: Fatal exception in interrupt [ 124.823023] Pid: 1242, comm: load_rtnet Tainted: G D 2.6.32.11+drm33.2-ubuntu-rtai38-via-c7 #1 [ 124.823023] Call Trace: [ 124.823023] [<c057a214>] panic+0x53/0xed [ 124.823023] [<c057d55d>] oops_end+0xbd/0xc0 [ 124.823023] [<c011e41e>] no_context+0xbe/0x150 [ 124.823023] [<c011e540>] __bad_area_nosemaphore+0x90/0x130 [ 124.823023] [<c011e5f7>] bad_area_nosemaphore+0x17/0x20 [ 124.823023] [<c057e921>] do_page_fault+0x361/0x420 [ 124.823023] [<c011c513>] __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c01312e9>] ? context_switch+0x109/0x320 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c057c9c4>] error_code+0x70/0x80 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<ddf5c15a>] ? rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] [<dca4c608>] ? rtai_handle_isched_lock+0x18/0x20 [rtai_lxrt] [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057e815>] do_page_fault+0x255/0x420 [ 124.823023] [<c011c513>] __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c057c9c4>] error_code+0x70/0x80 [ 124.823023] BUG: unable to handle kernel NULL pointer dereference at 000000c0 [ 124.823023] IP: [<ddf5c15a>] rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] *pde = 09988067 *pte = 00000000 [ 124.823023] Oops: 0000 [#2] PREEMPT [ 124.823023] last sysfs file: /sys/devices/virtual/net/rtlo/flags [ 124.823023] Modules linked in: rt_via_rhine rtcap tdma rtudp rtipv4 rtpacket rt_loopback rtmac rtnet rtai_rtdm rtai_shm rtai_netrpc rtai_msg rtai_mbx rtai_sem rtai_fifos rtai_lxrt rtai_hal via binfmt_misc drm ppdev snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device fbcon tileblit font bitblit softcursor snd vga16fb soundcore vgastate via_agp snd_page_alloc lp rt3572sta i2c_viapro shpchp agpgart parport mii usbhid pata_via hid [last unloaded: via_rhine] [ 124.823023] [ 124.823023] Pid: 1242, comm: load_rtnet Tainted: G D (2.6.32.11+drm33.2-ubuntu-rtai38-via-c7 #1) CX700 [ 124.823023] EIP: 0060:[<ddf5c15a>] EFLAGS: 00010046 CPU: 0 [ 124.823023] EIP is at rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] EAX: 000000d8 EBX: c669ef40 ECX: 00000000 EDX: 00000000 [ 124.823023] ESI: ddf5c110 EDI: 00000000 EBP: c8f7dce4 ESP: c8f7dcc4 [ 124.823023] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 [ 124.823023] Process load_rtnet (pid: 1242, ti=c8f7c000 task=c6439980 task.ti=c8f7c000) [ 124.823023] I-pipe domain Linux [ 124.823023] Stack: [ 124.823023] c01052bf 00000002 c06c4d18 00000000 00000000 c085b500 ddf5c110 00000000 [ 124.823023] <0> c8f7dd4c c01900ca 00000025 00000000 c085b500 00000a00 00000000 ddf5c110 [ 124.823023] <0> 00000000 c8f7dd4c 00000025 0000007b 0000007b 00000000 000000e0 ffffffff [ 124.823023] Call Trace: [ 124.823023] [<c01052bf>] ? dump_trace+0x6f/0xe0 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] ? __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] ? __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057a293>] ? panic+0xd2/0xed [ 124.823023] [<c057d55d>] ? oops_end+0xbd/0xc0 [ 124.823023] [<c011e41e>] ? no_context+0xbe/0x150 [ 124.823023] [<c011e540>] ? __bad_area_nosemaphore+0x90/0x130 [ 124.823023] [<c011e5f7>] ? bad_area_nosemaphore+0x17/0x20 [ 124.823023] [<c057e921>] ? do_page_fault+0x361/0x420 [ 124.823023] [<c011c513>] ? __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c01312e9>] ? context_switch+0x109/0x320 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c057c9c4>] ? error_code+0x70/0x80 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<ddf5c15a>] ? rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] [<dca4c608>] ? rtai_handle_isched_lock+0x18/0x20 [rtai_lxrt] [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] ? __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] ? __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057e815>] ? do_page_fault+0x255/0x420 [ 124.823023] [<c011c513>] ? __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c057c9c4>] ? error_code+0x70/0x80 [ 124.823023] Code: 00 00 8b 53 54 89 15 48 ca f5 dd 50 9d 8b 43 14 8b 40 34 89 45 e4 6b c0 6c 8b 90 c4 ca f5 dd 8b 88 60 ca f5 dd 89 55 f0 83 e2 fe <f6> 81 c0 00 00 00 01 0f 45 55 f0 f6 c2 02 89 55 f0 74 15 8b 80 [ 124.823023] EIP: [<ddf5c15a>] rtcap_signal_handler+0x4a/0x260 [rtcap] SS:ESP 0068:c8f7dcc4 [ 124.823023] CR2: 00000000000000c0 [ 124.823023] ---[ end trace 9806bedd9156fe01 ]--- [ 124.823023] Kernel panic - not syncing: Fatal exception in interrupt [ 124.823023] Pid: 1242, comm: load_rtnet Tainted: G D 2.6.32.11+drm33.2-ubuntu-rtai38-via-c7 #1 [ 124.823023] Call Trace: [ 124.823023] [<c057a214>] panic+0x53/0xed [ 124.823023] [<c057d55d>] oops_end+0xbd/0xc0 [ 124.823023] [<c011e41e>] no_context+0xbe/0x150 [ 124.823023] [<c011e540>] __bad_area_nosemaphore+0x90/0x130 [ 124.823023] [<c0139200>] ? vprintk+0x160/0x3c0 [ 124.823023] [<c0139200>] ? vprintk+0x160/0x3c0 [ 124.823023] [<c011e5f7>] bad_area_nosemaphore+0x17/0x20 [ 124.823023] [<c057e921>] do_page_fault+0x361/0x420 [ 124.823023] [<c0159403>] ? up+0x43/0x80 [ 124.823023] [<c011c513>] __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c057a338>] ? printk+0x8a/0xf2 [ 124.823023] [<c057c9c4>] ? error_code+0x70/0x80 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c057c9c4>] error_code+0x70/0x80 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<ddf5c15a>] ? rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] [<c01052bf>] ? dump_trace+0x6f/0xe0 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057a293>] panic+0xd2/0xed [ 124.823023] [<c057d55d>] oops_end+0xbd/0xc0 [ 124.823023] [<c011e41e>] no_context+0xbe/0x150 [ 124.823023] [<c011e540>] __bad_area_nosemaphore+0x90/0x130 [ 124.823023] [<c011e5f7>] bad_area_nosemaphore+0x17/0x20 [ 124.823023] [<c057e921>] do_page_fault+0x361/0x420 [ 124.823023] [<c011c513>] __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c01312e9>] ? context_switch+0x109/0x320 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c057c9c4>] error_code+0x70/0x80 [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<ddf5c15a>] ? rtcap_signal_handler+0x4a/0x260 [rtcap] [ 124.823023] [<dca4c608>] ? rtai_handle_isched_lock+0x18/0x20 [rtai_lxrt] [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900ca>] __xirq_end+0x4d/0x5a [ 124.823023] [<ddf5c110>] ? rtcap_signal_handler+0x0/0x260 [rtcap] [ 124.823023] [<c01900d7>] ? __virq_end+0x0/0x9 [ 124.823023] [<c01906e5>] __ipipe_unstall_root+0x25/0x30 [ 124.823023] [<c057e815>] do_page_fault+0x255/0x420 [ 124.823023] [<c011c513>] __ipipe_handle_exception+0xc3/0x220 [ 124.823023] [<c057c9c4>] error_code+0x70/0x80
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