Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752218AbZIXH6c (ORCPT ); Thu, 24 Sep 2009 03:58:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752033AbZIXH6b (ORCPT ); Thu, 24 Sep 2009 03:58:31 -0400 Received: from mail.gmx.net ([213.165.64.20]:37097 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751944AbZIXH6a (ORCPT ); Thu, 24 Sep 2009 03:58:30 -0400 X-Authenticated: #32306085 X-Provags-ID: V01U2FsdGVkX18/StNyXJk/Ts3lfskbwrcdgVj/CYijMxaYvG+kZo 7dVhR8ruPMbsYv From: Christoph Thielecke Reply-To: christoph.thielecke@gmx.de To: Linux Kernel Mailing List Subject: console access lost after deregistering oti6858 module Date: Thu, 24 Sep 2009 09:58:36 +0200 User-Agent: KMail/1.9.9 Cc: Kernel Testers List MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4157812.MlDVcoHxhH"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200909240958.39383.christoph.thielecke@gmx.de> X-Y-GMX-Trusted: 0 X-FuHaFi: 0.54 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5344 Lines: 122 --nextPart4157812.MlDVcoHxhH Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hello, I found a problem with the oti6858 usbserial driver. Sometimes something go= es=20 wrong and I lost completly the console access. I can type chars in a=20 application like firefox but not in any console window (xterm or real tty).= =20 ssh login succeedes partly but I dont get a prompt in this case. After=20 examining the syslog I found that: =2D---- syslog begin ------ Sep 24 09:27:48 develop kernel: usbcore: deregistering interface driver=20 oti6858 Sep 24 09:27:48 develop kernel: ------------[ cut here ]------------ Sep 24 09:27:48 develop kernel: WARNING: at kernel/workqueue.c:368=20 flush_cpu_workqueue+0x68/0x6a() Sep 24 09:27:48 develop kernel: Hardware name: MP061 Sep 24 09:27:48 develop kernel: Modules linked in: oti6858(-) nvidia(P)=20 binfmt_misc ppdev lp parport rfcomm l2cap bluetooth tun vboxnetadp vboxnetf= lt=20 vboxdrv pppol2tp pppox ppp_generic slhc ipv6 capifs acpi_cpufreq=20 cpufreq_ondemand cpufr eq_powersave cpufreq_stats freq_table cpufreq_userspace cpufreq_conservativ= e=20 nfsd nfs lockd fscache nfs_acl auth_rpcgss sunrpc deflate zlib_deflate ctr= =20 twofish twofish_common camellia serpent blowfish cast5 des_generic cbc=20 aes_i586 aes_g eneric xcbc rmd160 sha256_generic sha1_generic crypto_null af_key=20 nls_iso8859_1 nls_cp437 vfat fat fuse dm_snapshot dm_mirror dm_region_hash= =20 dm_log coretemp loop pl2303 snd_hda_codec_idt usbhid snd_hda_intel hid=20 snd_hda_codec snd_hwdep s nd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy arc4 snd_seq_oss ecb=20 snd_seq_midi snd_rawmidi iwl3945 snd_seq_midi_event usbserial dm9601 snd_se= q=20 iwlcore sdhci_pci firewire_ohci usb_storage asix usbnet snd_timer sdhci=20 snd_seq_device intel _agp rtc_cmos b44 mmc_core firewire_core mac80211 snd crc_itu_t agpgart=20 iTCO_wdt iTCO_vendor_support rtc_core rtc_lib ssb ohci1394 soundcore=20 snd_page_alloc joydev led_class pcmcia pcmcia_core mii ieee1394 ricoh_mmc=20 button battery ac vide o processor cfg80211 sg i2c_i801 i2c_core uhci_hcd ehci_hcd evdev usbcore=20 psmouse wmi dell_laptop sr_mod serio_raw output cdrom rfkill dm_mod thermal= =20 fan ide_pci_generic Sep 24 09:27:48 develop kernel: Pid: 7, comm: events/0 Tainted: P R = =20 2.6.31 #1 Sep 24 09:27:48 develop kernel: Call Trace: Sep 24 09:27:48 develop kernel: [] ? printk+0x18/0x20 Sep 24 09:27:48 develop kernel: [] ? flush_cpu_workqueue+0x68/0x6a Sep 24 09:27:48 develop kernel: [] warn_slowpath_common+0x66/0xae Sep 24 09:27:48 develop kernel: [] ? flush_cpu_workqueue+0x68/0x6a Sep 24 09:27:48 develop kernel: [] warn_slowpath_null+0x15/0x17 Sep 24 09:27:48 develop kernel: [] flush_cpu_workqueue+0x68/0x6a Sep 24 09:27:48 develop kernel: [] ? default_wake_function+0xb/0xd Sep 24 09:27:48 develop kernel: [] ? lock_timer_base+0x1f/0x40 Sep 24 09:27:48 develop kernel: [] flush_workqueue+0x2e/0x4c Sep 24 09:27:48 develop kernel: [] flush_scheduled_work+0xd/0xf Sep 24 09:27:48 develop kernel: [] oti6858_close+0x74/0x10a=20 [oti6858] Sep 24 09:27:48 develop kernel: [] serial_do_down+0x33/0x3f=20 [usbserial] Sep 24 09:27:48 develop kernel: [] serial_hangup+0x11/0x1c=20 [usbserial] Sep 24 09:27:48 develop kernel: [] do_tty_hangup+0xbf/0x325 Sep 24 09:27:48 develop kernel: [] worker_thread+0x153/0x22c Sep 24 09:27:48 develop kernel: [] ? __wake_up_common+0x3f/0x63 Sep 24 09:27:48 develop kernel: [] ? do_tty_hangup+0x0/0x325 Sep 24 09:27:48 develop kernel: [] ?=20 autoremove_wake_function+0x0/0x3a Sep 24 09:27:48 develop kernel: [] ? worker_thread+0x0/0x22c Sep 24 09:27:48 develop kernel: [] kthread+0x74/0x76 Sep 24 09:27:48 develop kernel: [] ? kthread+0x0/0x76 Sep 24 09:27:48 develop kernel: [] kernel_thread_helper+0x7/0x10 Sep 24 09:27:48 develop kernel: ---[ end trace ca500da836b73c70 ]--- Sep 24 09:27:48 develop kernel: oti6858 ttyUSB1: oti6858 converter now=20 disconnected from ttyUSB1 Sep 24 09:27:48 develop kernel: oti6858 4-1:1.0: device disconnected Sep 24 09:27:48 develop kernel: USB Serial deregistering driver oti6858 Sep 24 09:27:49 develop chipcardd[28322]: devicemanager.c: 3356: Changes in= =20 hardware list =2D---- syslog end ------ I think this should fixed. I'm not an basic user and can test a lot and fin= d a=20 way to help me but its very nasty to do a hard shutdown (system hangs on=20 reboot). With best regards Christoph =2D-=20 Linux User Group Wernigerode http://www.lug-wr.de/ --nextPart4157812.MlDVcoHxhH Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEABECAAYFAkq7Jq0ACgkQd9JRTD5SjRhDqACeNpfgiqfxx1xYXeiWZE+S6zer KZAAniVakA+CB55uvrLiAKonMMNpuo7S =Md/O -----END PGP SIGNATURE----- --nextPart4157812.MlDVcoHxhH-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/