Messages in this thread |  | | | Date | Wed, 15 Sep 2004 09:32:08 +0200 | | From | martin f krafft <> | | Subject | oops in usbserial / removing visor.o |
Yesterday, I hotsynced my palm and surprisingly, for the first time, My 2.6.8.1 (Debian stock) kernel oopsed:
kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000070 kernel: printing eip: kernel: f8eb9584 kernel: *pde = 00000000 kernel: Oops: 0000 [#1] kernel: PREEMPT kernel: Modules linked in: visor usbserial ehci_hcd usb_storage hci_usb uhci_hcd usbcore nls_iso8859_1 nls_cp437 bnep rfcomm l2cap ide_cd cdrom ipv6 lp thermal fan button processor ac battery af_packet ipt_LOG ipt_limit ipt_REJECT ipt_state iptable_filter ipt_MASQUERADE iptable_nat ip_conntrack ip_tables 8139cp bt878 eth1394 sata_promise libata ohci1394 ieee1394 pci_hotplug via_agp agpgart pcspkr parport_pc parport bluetooth sd_mod scsi_mod tuner tvaudio msp3400 bttv video_buf i2c_algo_bit v4l2_common btcx_risc i2c_core videodev 8139too mii crc32 tg3 firmware_class snd_bt87x via_ircc irda crc_ccitt snd_via82xx snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore dm_mod tsdev mousedev evdev capability commoncap psmouse rtc xfs reiserfs vfat fat isofs ext2 ext3 jbd mbcache ide_generic via82cxxx ide_disk ide_core unix font vesafb cfbcopyarea cfbimgblt cfbfillrect kernel: CPU: 0 kernel: EIP: 0060:[__crc_bio_phys_segments+294547/1648624] Not tainted kernel: EFLAGS: 00010246 (2.6.8-1-k7) kernel: EIP is at serial_chars_in_buffer+0x24/0xa0 [usbserial] kernel: eax: f5910000 ebx: 00000000 ecx: 00000000 edx: d99d7b20 kernel: esi: ffffffea edi: 00000000 ebp: c1dd74c0 esp: f0c99ea4 kernel: ds: 007b es: 007b ss: 0068 kernel: Process pilot-xfer (pid: 23205, threadinfo=f0c98000 task=c1df88e0) kernel: Stack: c1df8a88 00000000 7fffffff 00000004 00000000 f5910000 c01dd3ff f5910000 kernel: f591091c f0c99f44 c1dd74c0 00000008 00000003 00000003 c01d8f85 f5910000 kernel: c1dd74c0 00000000 00000000 c016727e c1dd74c0 00000000 00000000 00000000 kernel: Call Trace: kernel: [normal_poll+239/336] normal_poll+0xef/0x150 kernel: [tty_poll+101/128] tty_poll+0x65/0x80 kernel: [do_select+606/720] do_select+0x25e/0x2d0 kernel: [__pollwait+0/208] __pollwait+0x0/0xd0 kernel: [sys_select+703/1216] sys_select+0x2bf/0x4c0 kernel: [syscall_call+7/11] syscall_call+0x7/0xb kernel: Code: 8b 53 70 85 d2 75 35 a1 84 00 ec f8 85 c0 75 0e 89 f0 8b 5c The result is surprising: USB still works, but the usbserial subtree (in terms of dependencies) seems to be ballooney. At least, visor.o seems to be used by 2^32-1 which I don't think exists. ;^>
$ lsmod [...] visor 18256 4294967295 usbserial 29928 3 visor [...]
So this post fulfills two purposes. First, it's a bug report, and if you need any more info, please let me know.
Second, I am wondering how to remove or reinitialise visor.o now.
# rmmod visor ERROR: Module visor is in use
CONFIG_MODULE_FORCE_UNLOAD is set, but I am cautious because I do not want to crash the system right now, it's being intensively used. This is also the reason why I don't simply reboot to fix the problem.
What else can I do?
Cheers,
-- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus@madduck.net
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