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Message-ID: <4C864143.5090803@xs4all.nl> Date: Tue, 07 Sep 2010 15:42:27 +0200 From: Udo van den Heuvel <udovdh@...all.nl> To: linux-kernel@...r.kernel.org Subject: known vboxgetty/isdn issue in 2.6.35.3? Found this in messages: Sep 2 15:00:22 epia klogd: INFO: task vboxgetty:25662 blocked for more than 120 seconds. Sep 2 15:00:22 epia klogd: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 2 15:00:22 epia klogd: vboxgetty D 00000000 0 25662 1 0x00000000 Sep 2 15:00:22 epia klogd: cba29c74 00000046 c1157e3a 00000000 f4c28000 f4c28000 cbb13c4c f4c28000 Sep 2 15:00:22 epia klogd: cbb13858 f4c28000 00000202 cba29ca4 c1294879 cbb13878 00000202 cbb13878 Sep 2 15:00:22 epia klogd: cbb13878 f4c28000 cba29c84 ffffffff cbb13800 cbb13858 cbb13c4c cba29cb4 Sep 2 15:00:22 epia klogd: Call Trace: Sep 2 15:00:22 epia klogd: [<c1157e3a>] ? tty_unthrottle+0x13/0x3a Sep 2 15:00:22 epia klogd: [<c1294879>] mutex_lock_nested+0x13e/0x23f Sep 2 15:00:22 epia klogd: [<c1157e3a>] tty_unthrottle+0x13/0x3a Sep 2 15:00:22 epia klogd: [<c1156a6e>] reset_buffer_flags+0xd4/0xd9 Sep 2 15:00:22 epia klogd: [<c1156a80>] n_tty_flush_buffer+0xd/0x63 Sep 2 15:00:22 epia klogd: [<c11593c7>] tty_ldisc_flush+0x1f/0x34 Sep 2 15:00:22 epia klogd: [<c11d6e28>] isdn_tty_modem_result+0x342/0x37c Sep 2 15:00:22 epia klogd: [<c1153ff3>] ? tty_wakeup+0x46/0x4e Sep 2 15:00:22 epia klogd: [<c11d910a>] isdn_tty_modem_hup+0x76/0x176 Sep 2 15:00:22 epia klogd: [<c115824b>] ? set_termios+0x1a8/0x397 Sep 2 15:00:22 epia klogd: [<c129476a>] ? mutex_lock_nested+0x2f/0x23f Sep 2 15:00:22 epia klogd: [<c11d9b17>] isdn_tty_change_speed+0xa2/0xd4 Sep 2 15:00:22 epia klogd: [<c11d9b86>] isdn_tty_set_termios+0x3d/0x5a Sep 2 15:00:22 epia klogd: [<c11583bb>] set_termios+0x318/0x397 Sep 2 15:00:22 epia klogd: [<c1158661>] tty_mode_ioctl+0x178/0x2db Sep 2 15:00:22 epia klogd: [<c1158a06>] ? tty_ldisc_try+0x11/0x38 Sep 2 15:00:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:00:22 epia klogd: [<c1158908>] n_tty_ioctl_helper+0x144/0x154 Sep 2 15:00:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:00:22 epia klogd: [<c1155ff9>] n_tty_ioctl+0x97/0xa0 Sep 2 15:00:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:00:22 epia klogd: [<c11547ed>] tty_ioctl+0x699/0x6d3 Sep 2 15:00:22 epia klogd: [<c1083788>] vfs_ioctl+0x27/0x91 Sep 2 15:00:22 epia klogd: [<c1154154>] ? tty_ioctl+0x0/0x6d3 Sep 2 15:00:22 epia klogd: [<c1083d06>] do_vfs_ioctl+0x467/0x4a5 Sep 2 15:00:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:00:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:00:22 epia klogd: [<c1209c83>] ? net_tx_action+0x47/0xcc Sep 2 15:00:22 epia klogd: [<c102262a>] ? __do_softirq+0xc3/0xd2 Sep 2 15:00:22 epia klogd: [<c1083d85>] sys_ioctl+0x41/0x61 Sep 2 15:00:22 epia klogd: [<c1003cb9>] ? do_IRQ+0x74/0x87 Sep 2 15:00:22 epia klogd: [<c1002813>] sysenter_do_call+0x12/0x2d Sep 2 15:00:22 epia klogd: INFO: lockdep is turned off. Sep 2 15:02:22 epia klogd: INFO: task vboxgetty:25662 blocked for more than 120 seconds. Sep 2 15:02:22 epia klogd: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 2 15:02:22 epia klogd: vboxgetty D 00000000 0 25662 1 0x00000000 Sep 2 15:02:22 epia klogd: cba29c74 00000046 c1157e3a 00000000 f4c28000 f4c28000 cbb13c4c f4c28000 Sep 2 15:02:22 epia klogd: cbb13858 f4c28000 00000202 cba29ca4 c1294879 cbb13878 00000202 cbb13878 Sep 2 15:02:22 epia klogd: cbb13878 f4c28000 cba29c84 ffffffff cbb13800 cbb13858 cbb13c4c cba29cb4 Sep 2 15:02:22 epia klogd: Call Trace: Sep 2 15:02:22 epia klogd: [<c1157e3a>] ? tty_unthrottle+0x13/0x3a Sep 2 15:02:22 epia klogd: [<c1294879>] mutex_lock_nested+0x13e/0x23f Sep 2 15:02:22 epia klogd: [<c1157e3a>] tty_unthrottle+0x13/0x3a Sep 2 15:02:22 epia klogd: [<c1156a6e>] reset_buffer_flags+0xd4/0xd9 Sep 2 15:02:22 epia klogd: [<c1156a80>] n_tty_flush_buffer+0xd/0x63 Sep 2 15:02:22 epia klogd: [<c11593c7>] tty_ldisc_flush+0x1f/0x34 Sep 2 15:02:22 epia klogd: [<c11d6e28>] isdn_tty_modem_result+0x342/0x37c Sep 2 15:02:22 epia klogd: [<c1153ff3>] ? tty_wakeup+0x46/0x4e Sep 2 15:02:22 epia klogd: [<c11d910a>] isdn_tty_modem_hup+0x76/0x176 Sep 2 15:02:22 epia klogd: [<c115824b>] ? set_termios+0x1a8/0x397 Sep 2 15:02:22 epia klogd: [<c129476a>] ? mutex_lock_nested+0x2f/0x23f Sep 2 15:02:22 epia klogd: [<c11d9b17>] isdn_tty_change_speed+0xa2/0xd4 Sep 2 15:02:22 epia klogd: [<c11d9b86>] isdn_tty_set_termios+0x3d/0x5a Sep 2 15:02:22 epia klogd: [<c11583bb>] set_termios+0x318/0x397 Sep 2 15:02:22 epia klogd: [<c1158661>] tty_mode_ioctl+0x178/0x2db Sep 2 15:02:22 epia klogd: [<c1158a06>] ? tty_ldisc_try+0x11/0x38 Sep 2 15:02:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:02:22 epia klogd: [<c1158908>] n_tty_ioctl_helper+0x144/0x154 Sep 2 15:02:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:02:22 epia klogd: [<c1155ff9>] n_tty_ioctl+0x97/0xa0 Sep 2 15:02:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:02:22 epia klogd: [<c11547ed>] tty_ioctl+0x699/0x6d3 Sep 2 15:02:22 epia klogd: [<c1083788>] vfs_ioctl+0x27/0x91 Sep 2 15:02:22 epia klogd: [<c1154154>] ? tty_ioctl+0x0/0x6d3 Sep 2 15:02:22 epia klogd: [<c1083d06>] do_vfs_ioctl+0x467/0x4a5 Sep 2 15:02:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:02:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:02:22 epia klogd: [<c1209c83>] ? net_tx_action+0x47/0xcc Sep 2 15:02:22 epia klogd: [<c102262a>] ? __do_softirq+0xc3/0xd2 Sep 2 15:02:22 epia klogd: [<c1083d85>] sys_ioctl+0x41/0x61 Sep 2 15:02:22 epia klogd: [<c1003cb9>] ? do_IRQ+0x74/0x87 Sep 2 15:02:22 epia klogd: [<c1002813>] sysenter_do_call+0x12/0x2d Sep 2 15:02:22 epia klogd: INFO: lockdep is turned off. Sep 2 15:04:22 epia klogd: INFO: task vboxgetty:25662 blocked for more than 120 seconds. Sep 2 15:04:22 epia klogd: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 2 15:04:22 epia klogd: vboxgetty D 00000000 0 25662 1 0x00000000 Sep 2 15:04:22 epia klogd: cba29c74 00000046 c1157e3a 00000000 f4c28000 f4c28000 cbb13c4c f4c28000 Sep 2 15:04:22 epia klogd: cbb13858 f4c28000 00000202 cba29ca4 c1294879 cbb13878 00000202 cbb13878 Sep 2 15:04:22 epia klogd: cbb13878 f4c28000 cba29c84 ffffffff cbb13800 cbb13858 cbb13c4c cba29cb4 Sep 2 15:04:22 epia klogd: Call Trace: Sep 2 15:04:22 epia klogd: [<c1157e3a>] ? tty_unthrottle+0x13/0x3a Sep 2 15:04:22 epia klogd: [<c1294879>] mutex_lock_nested+0x13e/0x23f Sep 2 15:04:22 epia klogd: [<c1157e3a>] tty_unthrottle+0x13/0x3a Sep 2 15:04:22 epia klogd: [<c1156a6e>] reset_buffer_flags+0xd4/0xd9 Sep 2 15:04:22 epia klogd: [<c1156a80>] n_tty_flush_buffer+0xd/0x63 Sep 2 15:04:22 epia klogd: [<c11593c7>] tty_ldisc_flush+0x1f/0x34 Sep 2 15:04:22 epia klogd: [<c11d6e28>] isdn_tty_modem_result+0x342/0x37c Sep 2 15:04:22 epia klogd: [<c1153ff3>] ? tty_wakeup+0x46/0x4e Sep 2 15:04:22 epia klogd: [<c11d910a>] isdn_tty_modem_hup+0x76/0x176 Sep 2 15:04:22 epia klogd: [<c115824b>] ? set_termios+0x1a8/0x397 Sep 2 15:04:22 epia klogd: [<c129476a>] ? mutex_lock_nested+0x2f/0x23f Sep 2 15:04:22 epia klogd: [<c11d9b17>] isdn_tty_change_speed+0xa2/0xd4 Sep 2 15:04:22 epia klogd: [<c11d9b86>] isdn_tty_set_termios+0x3d/0x5a Sep 2 15:04:22 epia klogd: [<c11583bb>] set_termios+0x318/0x397 Sep 2 15:04:22 epia klogd: [<c1158661>] tty_mode_ioctl+0x178/0x2db Sep 2 15:04:22 epia klogd: [<c1158a06>] ? tty_ldisc_try+0x11/0x38 Sep 2 15:04:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:04:22 epia klogd: [<c1158908>] n_tty_ioctl_helper+0x144/0x154 Sep 2 15:04:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:04:22 epia klogd: [<c1155ff9>] n_tty_ioctl+0x97/0xa0 Sep 2 15:04:22 epia klogd: [<c1155f62>] ? n_tty_ioctl+0x0/0xa0 Sep 2 15:04:22 epia klogd: [<c11547ed>] tty_ioctl+0x699/0x6d3 Sep 2 15:04:22 epia klogd: [<c1083788>] vfs_ioctl+0x27/0x91 Sep 2 15:04:22 epia klogd: [<c1154154>] ? tty_ioctl+0x0/0x6d3 Sep 2 15:04:22 epia klogd: [<c1083d06>] do_vfs_ioctl+0x467/0x4a5 Sep 2 15:04:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:04:22 epia klogd: [<c1205478>] ? __kfree_skb+0x68/0x6b Sep 2 15:04:22 epia klogd: [<c1209c83>] ? net_tx_action+0x47/0xcc Sep 2 15:04:22 epia klogd: [<c102262a>] ? __do_softirq+0xc3/0xd2 Sep 2 15:04:22 epia klogd: [<c1083d85>] sys_ioctl+0x41/0x61 Sep 2 15:04:22 epia klogd: [<c1003cb9>] ? do_IRQ+0x74/0x87 Sep 2 15:04:22 epia klogd: [<c1002813>] sysenter_do_call+0x12/0x2d Sep 2 15:04:22 epia klogd: INFO: lockdep is turned off. (etc) Load went to 1.0 and up even while the box was 90%+ idle. Why did this happen? How to debug? Kind regards, Udo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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