From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755561Ab0IAPBk (ORCPT ); Wed, 1 Sep 2010 11:01:40 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:55216 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755194Ab0IAPBi (ORCPT ); Wed, 1 Sep 2010 11:01:38 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:content-type:date:message-id:mime-version:x-mailer; b=ByTpDy4OrOqjoyvb4Ch5YUMsGTf9khFyinmyq2NHDbvRnKHNMij5HFZZm+ooWEk9AG wn04njG2Hgp3U2+GGCmH1HiWCku0jEEySgXAx1IuD0tKxgZwmwGRUnw4/qrWzK6zdDhd G4pxoogqxZK2KCImIq8zVIQ4R/WyuSe/jLPKA= Subject: BUG: character device crashing after turning off device on usbserial From: Peter =?UTF-8?Q?J=C3=BAno=C5=A1?= To: linux-kernel@vger.kernel.org Content-Type: multipart/mixed; boundary="=-UniGv7ngJrIkwOyMUIRt" Date: Wed, 01 Sep 2010 17:01:34 +0200 Message-ID: <1283353294.19680.3.camel@peto-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-UniGv7ngJrIkwOyMUIRt Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Hello, I would like to report a bug stated in $SUBJ; important parts from dmesg and ver_linux are enclosed. If you are not correct recipient, send me, please, emails of correct recipients. Reproducible: sometimes Steps to reproduce: 1.) Connect usbserial device via USB. 2.) Turn it on. 3.) Send something to this USB. 4.) Turn it off. 5.) Read your dmesg & note that device is not responding anymore. Addional information: -device connected via USB was AOiP calys 50, usbserial build-in, more information is enclosed in dmesg_on_connect -in step 3 I was learning about Linux serial programming and maybe I did something wrong - wrong data written to port, incorrect flags set, data could be send/received only partially. Everything was run as regular user (no root, no kernel modules) -more information can be requested via email Peter Júnoš -- "Verba docent, exempla trahunt." --=-UniGv7ngJrIkwOyMUIRt Content-Disposition: attachment; filename="dmesg" Content-Type: text/plain; name="dmesg"; charset="UTF-8" Content-Transfer-Encoding: 7bit [ 1336.540432] kernel BUG at drivers/char/tty_ldisc.c:726! [ 1336.540439] invalid opcode: 0000 [#1] SMP [ 1336.540447] last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq [ 1336.540453] CPU 1 [ 1336.540456] Modules linked in: cp210x usbserial xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss snd_hda_codec_atihdmi snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm radeon snd_seq_midi ttm joydev snd_rawmidi snd_seq_midi_event drm_kms_helper hp_accel uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 lis3lv02d hp_wmi snd_seq drm i2c_algo_bit input_polldev led_class sunrpc snd_timer snd_seq_device wmi i2c_core snd video output soundcore snd_page_alloc intel_agp psmouse serio_raw usbhid hid ahci libahci sky2 [ 1336.540557] [ 1336.540565] Pid: 29, comm: khubd Not tainted 2.6.35-muj #1 3074/HP ProBook 4510s [ 1336.540572] RIP: 0010:[] [] tty_ldisc_reinit+0x50/0x60 [ 1336.540590] RSP: 0018:ffff88013979faf0 EFLAGS: 00010202 [ 1336.540596] RAX: ffffffffffffffea RBX: ffff880126852800 RCX: 02000000000000c1 [ 1336.540602] RDX: 00000000000000b8 RSI: ffffea0004089b20 RDI: 00000000000000bf [ 1336.540608] RBP: ffff88013979fb00 R08: 0000000000000001 R09: 0000000000000000 [ 1336.540613] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000000bf [ 1336.540619] R13: ffff880126852820 R14: 0000000000000000 R15: ffff8801268529e0 [ 1336.540626] FS: 0000000000000000(0000) GS:ffff880001e80000(0000) knlGS:0000000000000000 [ 1336.540633] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1336.540639] CR2: 00007f8e55906000 CR3: 0000000117467000 CR4: 00000000000006e0 [ 1336.540646] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1336.540652] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1336.540659] Process khubd (pid: 29, threadinfo ffff88013979e000, task ffff88013b7444a0) [ 1336.540663] Stack: [ 1336.540667] ffff880126852800 0000000000000000 ffff88013979fb30 ffffffff81330d00 [ 1336.540676] <0> ffff880126852800 ffff880126852800 ffff880126852a10 ffff880126852a10 [ 1336.540687] <0> ffff88013979fb90 ffffffff813282fe ffff88013979fb70 0000000000000000 [ 1336.540698] Call Trace: [ 1336.540709] [] tty_ldisc_hangup+0x1c0/0x1f0 [ 1336.540718] [] do_tty_hangup+0x16e/0x3e0 [ 1336.540727] [] tty_vhangup+0x15/0x20 [ 1336.540741] [] usb_serial_disconnect+0xac/0x1d0 [usbserial] [ 1336.540754] [] usb_unbind_interface+0x5a/0x1a0 [ 1336.540765] [] __device_release_driver+0x75/0xe0 [ 1336.540773] [] device_release_driver+0x2d/0x40 [ 1336.540781] [] bus_remove_device+0xb1/0xf0 [ 1336.540789] [] device_del+0x127/0x1d0 [ 1336.540798] [] usb_disable_device+0xa7/0x130 [ 1336.540806] [] usb_disconnect+0xdb/0x170 [ 1336.540815] [] hub_thread+0x4a2/0x13a0 [ 1336.540825] [] ? dequeue_entity+0x1b1/0x1f0 [ 1336.540835] [] ? autoremove_wake_function+0x0/0x40 [ 1336.540843] [] ? hub_thread+0x0/0x13a0 [ 1336.540851] [] kthread+0x96/0xa0 [ 1336.540860] [] kernel_thread_helper+0x4/0x10 [ 1336.540868] [] ? kthread+0x0/0xa0 [ 1336.540875] [] ? kernel_thread_helper+0x0/0x10 [ 1336.540880] Code: c7 43 40 00 00 00 00 44 89 e7 e8 6c fe ff ff 48 3d 00 f0 ff ff 77 14 48 89 43 40 44 89 e6 48 89 df e8 e5 f9 ff ff 5b 41 5c c9 c3 <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 [ 1336.540960] RIP [] tty_ldisc_reinit+0x50/0x60 [ 1336.540970] RSP [ 1336.540977] ---[ end trace 58107ed7e885d2ba ]--- [ 1917.791522] kernel BUG at drivers/char/tty_ldisc.c:726! [ 1917.791528] invalid opcode: 0000 [#1] SMP [ 1917.791536] last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq [ 1917.791542] CPU 0 [ 1917.791546] Modules linked in: cp210x usbserial xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss snd_hda_codec_atihdmi snd_hda_codec_analog sunrpc snd_hda_intel radeon snd_hda_codec snd_hwdep snd_pcm ttm snd_seq_midi drm_kms_helper snd_rawmidi snd_seq_midi_event snd_seq joydev hp_wmi uvcvideo snd_timer drm videodev v4l1_compat snd_seq_device v4l2_compat_ioctl32 snd psmouse i2c_algo_bit i2c_core serio_raw soundcore snd_page_alloc wmi intel_agp hp_accel lis3lv02d input_polldev video output led_class ahci sky2 libahci [ 1917.791646] [ 1917.791653] Pid: 29, comm: khubd Not tainted 2.6.35-muj #1 3074/HP ProBook 4510s [ 1917.791659] RIP: 0010:[] [] tty_ldisc_reinit+0x50/0x60 [ 1917.791677] RSP: 0018:ffff8801397adaf0 EFLAGS: 00010202 [ 1917.791683] RAX: ffffffffffffffea RBX: ffff88011d943000 RCX: 0000000000000002 [ 1917.791689] RDX: 0000000000000002 RSI: ffffffff81c8a480 RDI: 00000000000000bf [ 1917.791695] RBP: ffff8801397adb00 R08: 0000000000000000 R09: 0000000000000000 [ 1917.791701] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000000bf [ 1917.791707] R13: ffff88011d943020 R14: 0000000000000000 R15: ffff88011d9431e0 [ 1917.791714] FS: 0000000000000000(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000 [ 1917.791721] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1917.791727] CR2: 00007fa2239e0000 CR3: 00000000ba84c000 CR4: 00000000000006f0 [ 1917.791733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1917.791739] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1917.791746] Process khubd (pid: 29, threadinfo ffff8801397ac000, task ffff88013aafc4a0) [ 1917.791751] Stack: [ 1917.791754] ffff88011d943000 0000000000000000 ffff8801397adb30 ffffffff81330d00 [ 1917.791764] <0> ffff88011d943000 ffff88011d943000 ffff88011d943210 ffff88011d943210 [ 1917.791774] <0> ffff8801397adb90 ffffffff813282fe ffff8801397adb70 0000000000000000 [ 1917.791785] Call Trace: [ 1917.791796] [] tty_ldisc_hangup+0x1c0/0x1f0 [ 1917.791805] [] do_tty_hangup+0x16e/0x3e0 [ 1917.791814] [] tty_vhangup+0x15/0x20 [ 1917.791828] [] usb_serial_disconnect+0xac/0x1d0 [usbserial] [ 1917.791840] [] usb_unbind_interface+0x5a/0x1a0 [ 1917.791850] [] __device_release_driver+0x75/0xe0 [ 1917.791858] [] device_release_driver+0x2d/0x40 [ 1917.791866] [] bus_remove_device+0xb1/0xf0 [ 1917.791874] [] device_del+0x127/0x1d0 [ 1917.791883] [] usb_disable_device+0xa7/0x130 [ 1917.791891] [] usb_disconnect+0xdb/0x170 [ 1917.791900] [] hub_thread+0x4a2/0x13a0 [ 1917.791909] [] ? dequeue_entity+0x1b1/0x1f0 [ 1917.791920] [] ? autoremove_wake_function+0x0/0x40 [ 1917.791928] [] ? hub_thread+0x0/0x13a0 [ 1917.791936] [] kthread+0x96/0xa0 [ 1917.791945] [] kernel_thread_helper+0x4/0x10 [ 1917.791953] [] ? kthread+0x0/0xa0 [ 1917.791960] [] ? kernel_thread_helper+0x0/0x10 [ 1917.791965] Code: c7 43 40 00 00 00 00 44 89 e7 e8 6c fe ff ff 48 3d 00 f0 ff ff 77 14 48 89 43 40 44 89 e6 48 89 df e8 e5 f9 ff ff 5b 41 5c c9 c3 <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 [ 1917.792045] RIP [] tty_ldisc_reinit+0x50/0x60 [ 1917.792055] RSP --=-UniGv7ngJrIkwOyMUIRt Content-Disposition: attachment; filename="dmesg_on_connect" Content-Type: text/plain; name="dmesg_on_connect"; charset="UTF-8" Content-Transfer-Encoding: 7bit [ 2949.800209] usb 6-1: new full speed USB device using uhci_hcd and address 2 [ 2950.046893] usbcore: registered new interface driver usbserial [ 2950.046915] USB Serial support registered for generic [ 2950.046951] usbcore: registered new interface driver usbserial_generic [ 2950.046953] usbserial: USB Serial Driver core [ 2950.048989] USB Serial support registered for cp210x [ 2950.049030] cp210x 6-1:1.0: cp210x converter detected [ 2950.160208] usb 6-1: reset full speed USB device using uhci_hcd and address 2 [ 2950.311603] usb 6-1: cp210x converter now attached to ttyUSB0 [ 2950.311652] usbcore: registered new interface driver cp210x [ 2950.311657] cp210x: v0.09:Silicon Labs CP210x RS232 serial adaptor driver --=-UniGv7ngJrIkwOyMUIRt Content-Disposition: attachment; filename="ver_linux" Content-Type: text/plain; name="ver_linux"; charset="UTF-8" Content-Transfer-Encoding: 7bit Linux peto-laptop 2.6.35-muj #1 SMP Wed Aug 11 09:46:42 CEST 2010 x86_64 GNU/Linux Gnu C 4.4.5 Gnu make 3.81 binutils 2.20.51 util-linux 2.17.2 mount support module-init-tools 3.12 e2fsprogs 1.41.12 pcmciautils 014 Linux C Library 2.12.1 Dynamic linker (ldd) 2.12.1 Procps 3.2.8 Net-tools 1.60 Kbd 1.15 Sh-utils 8.5 wireless-tools 30 Modules Loaded usbhid hid xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss snd_hda_codec_atihdmi snd_hda_codec_analog sunrpc radeon snd_hda_intel snd_hda_codec snd_seq_midi snd_hwdep snd_rawmidi snd_seq_midi_event ttm snd_pcm snd_seq drm_kms_helper joydev snd_seq_device snd_timer hp_wmi uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 drm i2c_algo_bit psmouse hp_accel i2c_core video lis3lv02d input_polldev serio_raw snd output led_class wmi soundcore snd_page_alloc intel_agp ahci libahci sky2 --=-UniGv7ngJrIkwOyMUIRt--