Bug#683202: Some Bug in Linux kernel
Package: linux-image-2.6.32-5-686
Version: 2.6.32-45
When I used wvdial and pppd to make connection,
Sometimes ppp0 interface goes down,
any my system get hangged.
I am sending kern.log.
I am using Tata Photon USB modem.
$ lsusb
Bus 004 Device 003: ID 12d1:140b Huawei Technologies Co., Ltd. EC1260 Wireless Data Modem HSD USB Card
After usb_modswitch from 12d1:1505
I am using : Debian 6.0.5
Jul 29 23:11:47 debian kernel: [10528.575876] usb 4-1: USB disconnect, address 3
Jul 29 23:14:25 debian kernel: [10686.035383] INFO: task khubd:149 blocked for more than 120 seconds.
Jul 29 23:14:25 debian kernel: [10686.035554] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 29 23:14:25 debian kernel: [10686.035643] khubd D 00000000 0 149 2 0x00000000
Jul 29 23:14:25 debian kernel: [10686.035678] daa40440 00000046 bb11df37 00000000 00000282 c141d100 c141d100 c14186ac
Jul 29 23:14:25 debian kernel: [10686.035712] daa405fc c1c08100 00000000 00000282 fffffff0 e48469e0 da935000 e3124d00
Jul 29 23:14:25 debian kernel: [10686.035742] fffffffe daa405fc 002703ed 00000000 e3124d00 fffffff0 daa93e40 e46d052c
Jul 29 23:14:25 debian kernel: [10686.035777] Call Trace:
Jul 29 23:14:25 debian kernel: [10686.036229] [<e46c1efb>] ? usb_kill_urb+0x84/0xa0 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036341] [<c104432e>] ? autoremove_wake_function+0x0/0x2d
Jul 29 23:14:25 debian kernel: [10686.036391] [<e46c0e34>] ? usb_hcd_flush_endpoint+0xbc/0xce [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036441] [<e46c26a2>] ? usb_disable_endpoint+0x40/0x56 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036485] [<e46c2797>] ? usb_disable_interface+0x25/0x32 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036533] [<e46c4c2b>] ? usb_unbind_interface+0x3a/0xb4 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036607] [<c11b3a80>] ? __device_release_driver+0x74/0xb7
Jul 29 23:14:25 debian kernel: [10686.036628] [<c11b3b4f>] ? device_release_driver+0x15/0x1e
Jul 29 23:14:25 debian kernel: [10686.036648] [<c11b333b>] ? bus_remove_device+0x6e/0x87
Jul 29 23:14:25 debian kernel: [10686.036668] [<c11b1fd8>] ? device_del+0xfa/0x152
Jul 29 23:14:25 debian kernel: [10686.036715] [<e46c26ea>] ? usb_disable_device+0x32/0xba [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036757] [<e46bea9e>] ? usb_disconnect+0x70/0xf8 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036800] [<e46bf832>] ? hub_thread+0x521/0xe53 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036826] [<c104432e>] ? autoremove_wake_function+0x0/0x2d
Jul 29 23:14:25 debian kernel: [10686.036867] [<e46bf311>] ? hub_thread+0x0/0xe53 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.036886] [<c10440fc>] ? kthread+0x61/0x66
Jul 29 23:14:25 debian kernel: [10686.036902] [<c104409b>] ? kthread+0x0/0x66
Jul 29 23:14:25 debian kernel: [10686.036969] [<c1003d47>] ? kernel_thread_helper+0x7/0x10
Jul 29 23:14:25 debian kernel: [10686.037081] INFO: task wvdial:1188 blocked for more than 120 seconds.
Jul 29 23:14:25 debian kernel: [10686.037136] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 29 23:14:25 debian kernel: [10686.037220] wvdial D 0026d6f1 0 1188 1094 0x00000004
Jul 29 23:14:25 debian kernel: [10686.037241] dab46640 00000082 e23a9c7c 0026d6f1 00000296 c141d100 c141d100 c14186ac
Jul 29 23:14:25 debian kernel: [10686.037270] dab467fc c1c08100 00000000 00000296 00000000 e48469e0 da935000 e3165400
Jul 29 23:14:25 debian kernel: [10686.037298] fffffffe dab467fc 0026d7eb 00000000 e3165400 00000000 e23a9ccc e46d052c
Jul 29 23:14:25 debian kernel: [10686.037327] Call Trace:
Jul 29 23:14:25 debian kernel: [10686.037384] [<e46c1efb>] ? usb_kill_urb+0x84/0xa0 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.037405] [<c104432e>] ? autoremove_wake_function+0x0/0x2d
Jul 29 23:14:25 debian kernel: [10686.037456] [<e46c2f1c>] ? usb_start_wait_urb+0x62/0x92 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.037500] [<e46c235e>] ? usb_init_urb+0x1a/0x26 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.037546] [<e46c3157>] ? usb_control_msg+0xf7/0x111 [usbcore]
Jul 29 23:14:25 debian kernel: [10686.037570] [<e506d306>] ? option_send_setup+0x7a/0x84 [option]
Jul 29 23:14:25 debian kernel: [10686.037604] [<e5054e29>] ? usb_wwan_set_termios+0x44/0x49 [usb_wwan]
Jul 29 23:14:25 debian kernel: [10686.037623] [<e5054de5>] ? usb_wwan_set_termios+0x0/0x49 [usb_wwan]
Jul 29 23:14:25 debian kernel: [10686.037678] [<e5031740>] ? serial_set_termios+0x5f/0x72 [usbserial]
Jul 29 23:14:25 debian kernel: [10686.037722] [<c1193ad5>] ? set_termios+0x320/0x3a3
Jul 29 23:14:25 debian kernel: [10686.037744] [<c1193d85>] ? tty_mode_ioctl+0x188/0x45c
Jul 29 23:14:25 debian kernel: [10686.037836] [<c1025291>] ? check_preempt_wakeup+0x32/0x202
Jul 29 23:14:25 debian kernel: [10686.037885] [<c113c4f3>] ? copy_from_user+0x27/0x10e
Jul 29 23:14:25 debian kernel: [10686.037955] [<c10beec4>] ? set_fd_set+0x18/0x2d
Jul 29 23:14:25 debian kernel: [10686.037986] [<e50a8b55>] ? ppp_asynctty_ioctl+0x13b/0x165 [ppp_async]
Jul 29 23:14:25 debian kernel: [10686.038006] [<e50a8a1a>] ? ppp_asynctty_ioctl+0x0/0x165 [ppp_async]
Jul 29 23:14:25 debian kernel: [10686.038026] [<c11904e9>] ? tty_ioctl+0x870/0x8b1
Jul 29 23:14:25 debian kernel: [10686.038043] [<c118fb29>] ? tty_wakeup+0x43/0x47
Jul 29 23:14:25 debian kernel: [10686.038077] [<c1195b90>] ? pty_write+0x39/0x3f
Jul 29 23:14:25 debian kernel: [10686.038095] [<c118fc79>] ? tty_ioctl+0x0/0x8b1
Jul 29 23:14:25 debian kernel: [10686.038117] [<c10be1b0>] ? vfs_ioctl+0x1c/0x5f
Jul 29 23:14:25 debian kernel: [10686.038135] [<c10be744>] ? do_vfs_ioctl+0x4aa/0x4e5
Jul 29 23:14:25 debian kernel: [10686.038152] [<c118f6a0>] ? tty_write_unlock+0x27/0x2a
Jul 29 23:14:25 debian kernel: [10686.038168] [<c118f9e0>] ? tty_write+0x1af/0x1c0
Jul 29 23:14:25 debian kernel: [10686.038188] [<e50a8006>] ? ppp_asynctty_write+0x0/0x6 [ppp_async]
Jul 29 23:14:25 debian kernel: [10686.038205] [<c118f831>] ? tty_write+0x0/0x1c0
Jul 29 23:14:25 debian kernel: [10686.038260] [<c10b4134>] ? vfs_write+0x7e/0xd6
Jul 29 23:14:25 debian kernel: [10686.038281] [<c10be7c0>] ? sys_ioctl+0x41/0x58
Jul 29 23:14:25 debian kernel: [10686.038303] [<c10030fb>] ? sysenter_do_call+0x12/0x28
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