This is still an ongoing issue for me too. root@office:/# lsb_release -d Description: Ubuntu 10.04.4 LTS root@office:/# uname -a Linux office 2.6.32.38+drm33.16-athlonbrainfuck #1 SMP PREEMPT Fri Jun 17 15:51:10 EEST 2011 i686 GNU/Linux
At this box I use external pci hw USB-controller for GSM-modems using Asterisk. And have this: [102803.846563] __ratelimit: 15 callbacks suppressed [102803.846574] asterisk[6295]: segfault at 5f8491 ip 002d6d52 sp b71fe804 error 4 in libc-2.11.1.so[262000+153000] [102803.850975] ------------[ cut here ]------------ [102803.851011] WARNING: at drivers/usb/serial/usb-serial.c:440 serial_unthrottle+0x7c/0x80 [usbserial]() [102803.851068] Hardware name: VT8363 [102803.851071] Modules linked in: option usb_storage usbserial ppp_async binfmt_misc dahdi_dummy dahdi crc_ccitt nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc snd_via82xx gameport snd_ac97_codec ac97_bus sn d_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event fbcon tileblit snd_seq font bitblit snd_timer softcursor ppdev snd_seq_device n vidia(P) psmouse vga16fb vgastate serio_raw snd lp via686a via_agp parport_pc soundcore i2c_viapro shpchp parport agpgart 8139too usbhid hid floppy pata_via 8139cp mii [last unloaded: usbserial] [102803.851158] Pid: 6295, comm: asterisk Tainted: P 2.6.32.38+drm33.16-athlonbrainfuck #1 [102803.851163] Call Trace: [102803.851186] [<c0140e52>] warn_slowpath_common+0x72/0xa0 [102803.851194] [<e8a3b39c>] ? serial_unthrottle+0x7c/0x80 [usbserial] [102803.851202] [<e8a3b39c>] ? serial_unthrottle+0x7c/0x80 [usbserial] [102803.851209] [<c0140e9a>] warn_slowpath_null+0x1a/0x20 [102803.851217] [<e8a3b39c>] serial_unthrottle+0x7c/0x80 [usbserial] [102803.851228] [<c0594b88>] ? sub_preempt_count+0x8/0x90 [102803.851234] [<c0592263>] ? _spin_unlock_irqrestore+0x23/0x40 [102803.851247] [<c03b8c1b>] tty_unthrottle+0x3b/0x50 [102803.851253] [<c03b73fe>] reset_buffer_flags+0xbe/0xf0 [102803.851259] [<c03b744b>] n_tty_flush_buffer+0x1b/0x80 [102803.851267] [<c03ba31c>] tty_ldisc_flush+0x2c/0x50 [102803.851274] [<c03bb4c0>] tty_port_close_end+0x20/0xe0 [102803.851282] [<e8a3b7da>] serial_close+0x6a/0xb0 [usbserial] [102803.851288] [<c03b2353>] ? tty_fasync+0x43/0x140 [102803.851295] [<c03b45c0>] tty_release_dev+0x120/0x4f0 [102803.851310] [<c02acfc9>] ? ext4_discard_preallocations+0x2f9/0x450 [102803.851323] [<c01d545f>] ? kzfree+0x3f/0x50 [102803.851329] [<c0594c18>] ? add_preempt_count+0x8/0xb0 [102803.851335] [<c03b49a7>] tty_release+0x17/0x30 [102803.851345] [<c02016a3>] __fput+0xd3/0x1d0 [102803.851351] [<c02017bd>] fput+0x1d/0x30 [102803.851357] [<c01fdcdc>] filp_close+0x4c/0x80 [102803.851366] [<c02e50d9>] ? exit_sem+0x229/0x250 [102803.851374] [<c0142cbb>] put_files_struct+0x6b/0xb0 [102803.851380] [<c0142d47>] exit_files+0x47/0x60 [102803.851387] [<c0143b17>] do_exit+0x147/0x700 [102803.851394] [<c0594b88>] ? sub_preempt_count+0x8/0x90 [102803.851400] [<c014410e>] do_group_exit+0x3e/0xa0 [102803.851411] [<c01543bb>] get_signal_to_deliver+0x24b/0x430 [102803.851420] [<c0102a4b>] do_signal+0x6b/0xa40 [102803.851430] [<c01c765f>] ? __free_pages+0x5f/0xa0 [102803.851438] [<c01d9bf9>] ? print_vma_addr+0x89/0xf0 [102803.851451] [<c012bbfa>] ? __bad_area_nosemaphore+0x7a/0x130 [102803.851458] [<c012bd10>] ? bad_area+0x40/0x50 [102803.851464] [<c0594b22>] ? do_page_fault+0x3b2/0x410 [102803.851476] [<c0166cb6>] ? do_gettimeofday+0x16/0x40 [102803.851482] [<c0594770>] ? do_page_fault+0x0/0x410 [102803.851488] [<c0103475>] do_notify_resume+0x55/0xa0 [102803.851494] [<c010378c>] work_notifysig+0x13/0x1b [102803.851500] ---[ end trace 072f0803feec38c4 ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/533982 Title: WARNING: at /build/buildd/linux-2.6.32/drivers/usb/serial/usb- serial.c:440 serial_unthrottle 0x7b/0x80 [usbserial]() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/533982/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
