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Message-ID: <20100526084811.GA5890@linux-m68k.org>
Date: Wed, 26 May 2010 10:48:11 +0200
From: Richard Zidlicky <rz@...ux-m68k.org>
To: linux-kernel@...r.kernel.org
Subject: 2.6.34 hard lock ppp/do_tty_hangup, regression
Hello,
I am getting a perfectly reproducible hard lock when killing a ppp connection
that is in promiscuous mode, this USB device:
Bus 005 Device 003: ID 19d2:0063 ONDA Communication S.p.A.
In my case I run "tcptrack -i ppp0" in a terminal window and as soon as I kill
pppd the machine freezes hard.
Is this a known problem?
I had some non-fatal lockups in 2.6.30* that my be related so I have attached the
messages here:
May 16 22:19:18 localhost kernel: [ 0.000000] Linux version 2.6.33.2v1 (rz@rz) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #3 SMP Thu Apr 8 14:27:58 CEST 2010
....
....
....
....
May 19 00:44:36 localhost pppd[20619]: Terminating on signal 2
May 19 00:44:36 localhost pppd[20619]: Connect time 318.2 minutes.
May 19 00:44:36 localhost pppd[20619]: Sent 5172200 bytes, received 83501101 bytes.
May 19 00:44:36 localhost kernel: [81980.706871] device ppp0 left promiscuous mode
May 19 00:44:42 localhost pppd[20619]: Connection terminated.
May 19 00:44:51 localhost pppd[20619]: ioctl(TIOCSETD, N_TTY): Interrupted system call (line 562)
May 19 00:48:16 localhost kernel: [82200.358010] INFO: task events/0:9 blocked for more than 120 seconds.
May 19 00:48:16 localhost kernel: [82200.358014] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:48:16 localhost kernel: [82200.358017] events/0 D 00004a96 0 9 2 0x00000000
May 19 00:48:16 localhost kernel: [82200.358022] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4
May 19 00:48:16 localhost kernel: [82200.358029] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000
May 19 00:48:16 localhost kernel: [82200.358036] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96
May 19 00:48:16 localhost kernel: [82200.358044] Call Trace:
May 19 00:48:16 localhost kernel: [82200.358053] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:48:16 localhost kernel: [82200.358059] [<c045951f>] ? trace_hardirqs_off_caller+0x18/0x91
May 19 00:48:16 localhost kernel: [82200.358063] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:48:16 localhost kernel: [82200.358066] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:48:16 localhost kernel: [82200.358069] [<c07373ba>] __down_common+0x76/0xad
May 19 00:48:16 localhost kernel: [82200.358072] [<c073743c>] __down+0x12/0x14
May 19 00:48:16 localhost kernel: [82200.358076] [<c044f437>] down+0x22/0x2f
May 19 00:48:16 localhost kernel: [82200.358082] [<fa863bef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 19 00:48:16 localhost kernel: [82200.358086] [<fa863c36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 19 00:48:16 localhost kernel: [82200.358091] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 19 00:48:16 localhost kernel: [82200.358095] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 19 00:48:16 localhost kernel: [82200.358098] [<c0448303>] worker_thread+0x1a1/0x272
May 19 00:48:16 localhost kernel: [82200.358102] [<c04482b9>] ? worker_thread+0x157/0x272
May 19 00:48:16 localhost kernel: [82200.358105] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 19 00:48:16 localhost kernel: [82200.358108] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 19 00:48:16 localhost kernel: [82200.358112] [<c0448162>] ? worker_thread+0x0/0x272
May 19 00:48:16 localhost kernel: [82200.358115] [<c044b1d9>] kthread+0x61/0x66
May 19 00:48:16 localhost kernel: [82200.358118] [<c044b178>] ? kthread+0x0/0x66
May 19 00:48:16 localhost kernel: [82200.358122] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 19 00:48:16 localhost kernel: [82200.358124] INFO: lockdep is turned off.
May 19 00:48:16 localhost kernel: [82200.358170] INFO: task X:3712 blocked for more than 120 seconds.
May 19 00:48:16 localhost kernel: [82200.358171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:48:16 localhost kernel: [82200.358174] X D 00004a96 0 3712 3694 0x00400084
May 19 00:48:16 localhost kernel: [82200.358178] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000
May 19 00:48:16 localhost kernel: [82200.358185] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000
May 19 00:48:16 localhost kernel: [82200.358192] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc
May 19 00:48:16 localhost kernel: [82200.358199] Call Trace:
May 19 00:48:16 localhost kernel: [82200.358203] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:48:16 localhost kernel: [82200.358207] [<c0736681>] ? wait_for_common+0x31/0xec
May 19 00:48:16 localhost kernel: [82200.358211] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:48:16 localhost kernel: [82200.358214] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:48:16 localhost kernel: [82200.358217] [<c07366f7>] wait_for_common+0xa7/0xec
May 19 00:48:16 localhost kernel: [82200.358221] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 19 00:48:16 localhost kernel: [82200.358225] [<c07367ae>] wait_for_completion+0x12/0x14
May 19 00:48:16 localhost kernel: [82200.358228] [<c0448c56>] flush_work+0xa1/0xb2
May 19 00:48:16 localhost kernel: [82200.358231] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 19 00:48:16 localhost kernel: [82200.358234] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 19 00:48:16 localhost kernel: [82200.358238] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 19 00:48:16 localhost kernel: [82200.358241] [<c060b631>] n_tty_poll+0x54/0x127
May 19 00:48:16 localhost kernel: [82200.358244] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 19 00:48:16 localhost kernel: [82200.358247] [<c0608322>] tty_poll+0x4c/0x62
May 19 00:48:16 localhost kernel: [82200.358252] [<c04d8907>] do_select+0x3a8/0x5cf
May 19 00:48:16 localhost kernel: [82200.358256] [<c042730d>] ? update_curr+0x177/0x17f
May 19 00:48:16 localhost kernel: [82200.358260] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 19 00:48:16 localhost kernel: [82200.358263] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358266] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358269] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358272] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358274] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358277] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358280] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358283] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358286] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358289] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358292] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358295] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358298] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358301] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358304] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358307] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358309] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358312] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:48:16 localhost kernel: [82200.358316] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 19 00:48:16 localhost kernel: [82200.358321] [<c04adcfd>] ? might_fault+0x47/0x81
May 19 00:48:16 localhost kernel: [82200.358324] [<c04d7279>] ? do_vfs_ioctl+0x49b/0x4d5
May 19 00:48:16 localhost kernel: [82200.358327] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 19 00:48:16 localhost kernel: [82200.358330] [<c04d8eb3>] sys_select+0x6e/0x8c
May 19 00:48:16 localhost kernel: [82200.358334] [<c0738295>] syscall_call+0x7/0xb
May 19 00:48:16 localhost kernel: [82200.358336] INFO: lockdep is turned off.
May 19 00:50:16 localhost kernel: [82320.358012] INFO: task events/0:9 blocked for more than 120 seconds.
May 19 00:50:16 localhost kernel: [82320.358016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:50:16 localhost kernel: [82320.358019] events/0 D 00004a96 0 9 2 0x00000000
May 19 00:50:16 localhost kernel: [82320.358024] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4
May 19 00:50:16 localhost kernel: [82320.358032] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000
May 19 00:50:16 localhost kernel: [82320.358039] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96
May 19 00:50:16 localhost kernel: [82320.358046] Call Trace:
May 19 00:50:16 localhost kernel: [82320.358056] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:50:16 localhost kernel: [82320.358061] [<c045951f>] ? trace_hardirqs_off_caller+0x18/0x91
May 19 00:50:16 localhost kernel: [82320.358065] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:50:16 localhost kernel: [82320.358068] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:50:16 localhost kernel: [82320.358071] [<c07373ba>] __down_common+0x76/0xad
May 19 00:50:16 localhost kernel: [82320.358074] [<c073743c>] __down+0x12/0x14
May 19 00:50:16 localhost kernel: [82320.358079] [<c044f437>] down+0x22/0x2f
May 19 00:50:16 localhost kernel: [82320.358085] [<fa863bef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 19 00:50:16 localhost kernel: [82320.358088] [<fa863c36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 19 00:50:16 localhost kernel: [82320.358093] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 19 00:50:16 localhost kernel: [82320.358097] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 19 00:50:16 localhost kernel: [82320.358101] [<c0448303>] worker_thread+0x1a1/0x272
May 19 00:50:16 localhost kernel: [82320.358104] [<c04482b9>] ? worker_thread+0x157/0x272
May 19 00:50:16 localhost kernel: [82320.358107] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 19 00:50:16 localhost kernel: [82320.358111] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 19 00:50:16 localhost kernel: [82320.358114] [<c0448162>] ? worker_thread+0x0/0x272
May 19 00:50:16 localhost kernel: [82320.358117] [<c044b1d9>] kthread+0x61/0x66
May 19 00:50:16 localhost kernel: [82320.358120] [<c044b178>] ? kthread+0x0/0x66
May 19 00:50:16 localhost kernel: [82320.358124] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 19 00:50:16 localhost kernel: [82320.358126] INFO: lockdep is turned off.
May 19 00:50:16 localhost kernel: [82320.358171] INFO: task X:3712 blocked for more than 120 seconds.
May 19 00:50:16 localhost kernel: [82320.358173] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:50:16 localhost kernel: [82320.358175] X D 00004a96 0 3712 3694 0x00400084
May 19 00:50:16 localhost kernel: [82320.358180] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000
May 19 00:50:16 localhost kernel: [82320.358187] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000
May 19 00:50:16 localhost kernel: [82320.358193] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc
May 19 00:50:16 localhost kernel: [82320.358201] Call Trace:
May 19 00:50:16 localhost kernel: [82320.358205] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:50:16 localhost kernel: [82320.358208] [<c0736681>] ? wait_for_common+0x31/0xec
May 19 00:50:16 localhost kernel: [82320.358212] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:50:16 localhost kernel: [82320.358215] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:50:16 localhost kernel: [82320.358218] [<c07366f7>] wait_for_common+0xa7/0xec
May 19 00:50:16 localhost kernel: [82320.358222] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 19 00:50:16 localhost kernel: [82320.358226] [<c07367ae>] wait_for_completion+0x12/0x14
May 19 00:50:16 localhost kernel: [82320.358229] [<c0448c56>] flush_work+0xa1/0xb2
May 19 00:50:16 localhost kernel: [82320.358232] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 19 00:50:16 localhost kernel: [82320.358235] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 19 00:50:16 localhost kernel: [82320.358239] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 19 00:50:16 localhost kernel: [82320.358242] [<c060b631>] n_tty_poll+0x54/0x127
May 19 00:50:16 localhost kernel: [82320.358245] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 19 00:50:16 localhost kernel: [82320.358248] [<c0608322>] tty_poll+0x4c/0x62
May 19 00:50:16 localhost kernel: [82320.358252] [<c04d8907>] do_select+0x3a8/0x5cf
May 19 00:50:16 localhost kernel: [82320.358256] [<c042730d>] ? update_curr+0x177/0x17f
May 19 00:50:16 localhost kernel: [82320.358260] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 19 00:50:16 localhost kernel: [82320.358263] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358266] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358269] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358272] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358275] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358278] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358280] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358283] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358286] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358289] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358292] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358295] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358298] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358301] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358304] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358306] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358309] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358312] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:50:16 localhost kernel: [82320.358315] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 19 00:50:16 localhost kernel: [82320.358321] [<c04adcfd>] ? might_fault+0x47/0x81
May 19 00:50:16 localhost kernel: [82320.358324] [<c04d7279>] ? do_vfs_ioctl+0x49b/0x4d5
May 19 00:50:16 localhost kernel: [82320.358327] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 19 00:50:16 localhost kernel: [82320.358330] [<c04d8eb3>] sys_select+0x6e/0x8c
May 19 00:50:16 localhost kernel: [82320.358334] [<c0738295>] syscall_call+0x7/0xb
May 19 00:50:16 localhost kernel: [82320.358335] INFO: lockdep is turned off.
May 19 00:52:16 localhost kernel: [82440.358012] INFO: task events/0:9 blocked for more than 120 seconds.
May 19 00:52:16 localhost kernel: [82440.358017] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:52:16 localhost kernel: [82440.358019] events/0 D 00004a96 0 9 2 0x00000000
May 19 00:52:16 localhost kernel: [82440.358024] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4
May 19 00:52:16 localhost kernel: [82440.358032] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000
May 19 00:52:16 localhost kernel: [82440.358039] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96
May 19 00:52:16 localhost kernel: [82440.358046] Call Trace:
May 19 00:52:16 localhost kernel: [82440.358056] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:52:16 localhost kernel: [82440.358061] [<c045951f>] ? trace_hardirqs_off_caller+0x18/0x91
May 19 00:52:16 localhost kernel: [82440.358065] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:52:16 localhost kernel: [82440.358068] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:52:16 localhost kernel: [82440.358071] [<c07373ba>] __down_common+0x76/0xad
May 19 00:52:16 localhost kernel: [82440.358074] [<c073743c>] __down+0x12/0x14
May 19 00:52:16 localhost kernel: [82440.358079] [<c044f437>] down+0x22/0x2f
May 19 00:52:16 localhost kernel: [82440.358084] [<fa863bef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 19 00:52:16 localhost kernel: [82440.358088] [<fa863c36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 19 00:52:16 localhost kernel: [82440.358093] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 19 00:52:16 localhost kernel: [82440.358096] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 19 00:52:16 localhost kernel: [82440.358100] [<c0448303>] worker_thread+0x1a1/0x272
May 19 00:52:16 localhost kernel: [82440.358104] [<c04482b9>] ? worker_thread+0x157/0x272
May 19 00:52:16 localhost kernel: [82440.358107] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 19 00:52:16 localhost kernel: [82440.358110] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 19 00:52:16 localhost kernel: [82440.358113] [<c0448162>] ? worker_thread+0x0/0x272
May 19 00:52:16 localhost kernel: [82440.358117] [<c044b1d9>] kthread+0x61/0x66
May 19 00:52:16 localhost kernel: [82440.358120] [<c044b178>] ? kthread+0x0/0x66
May 19 00:52:16 localhost kernel: [82440.358124] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 19 00:52:16 localhost kernel: [82440.358126] INFO: lockdep is turned off.
May 19 00:52:16 localhost kernel: [82440.358171] INFO: task X:3712 blocked for more than 120 seconds.
May 19 00:52:16 localhost kernel: [82440.358173] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:52:16 localhost kernel: [82440.358175] X D 00004a96 0 3712 3694 0x00400084
May 19 00:52:16 localhost kernel: [82440.358179] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000
May 19 00:52:16 localhost kernel: [82440.358187] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000
May 19 00:52:16 localhost kernel: [82440.358193] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc
May 19 00:52:16 localhost kernel: [82440.358200] Call Trace:
May 19 00:52:16 localhost kernel: [82440.358205] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:52:16 localhost kernel: [82440.358208] [<c0736681>] ? wait_for_common+0x31/0xec
May 19 00:52:16 localhost kernel: [82440.358212] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:52:16 localhost kernel: [82440.358215] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:52:16 localhost kernel: [82440.358218] [<c07366f7>] wait_for_common+0xa7/0xec
May 19 00:52:16 localhost kernel: [82440.358223] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 19 00:52:16 localhost kernel: [82440.358226] [<c07367ae>] wait_for_completion+0x12/0x14
May 19 00:52:16 localhost kernel: [82440.358229] [<c0448c56>] flush_work+0xa1/0xb2
May 19 00:52:16 localhost kernel: [82440.358232] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 19 00:52:16 localhost kernel: [82440.358236] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 19 00:52:16 localhost kernel: [82440.358239] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 19 00:52:16 localhost kernel: [82440.358242] [<c060b631>] n_tty_poll+0x54/0x127
May 19 00:52:16 localhost kernel: [82440.358245] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 19 00:52:16 localhost kernel: [82440.358248] [<c0608322>] tty_poll+0x4c/0x62
May 19 00:52:16 localhost kernel: [82440.358252] [<c04d8907>] do_select+0x3a8/0x5cf
May 19 00:52:16 localhost kernel: [82440.358257] [<c042730d>] ? update_curr+0x177/0x17f
May 19 00:52:16 localhost kernel: [82440.358261] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 19 00:52:16 localhost kernel: [82440.358264] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358267] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358270] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358273] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358276] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358279] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358281] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358284] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358287] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358290] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358293] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358296] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358299] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358302] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358305] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358307] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358310] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358313] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:52:16 localhost kernel: [82440.358316] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 19 00:52:16 localhost kernel: [82440.358322] [<c04adcfd>] ? might_fault+0x47/0x81
May 19 00:52:16 localhost kernel: [82440.358325] [<c04d7279>] ? do_vfs_ioctl+0x49b/0x4d5
May 19 00:52:16 localhost kernel: [82440.358328] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 19 00:52:16 localhost kernel: [82440.358331] [<c04d8eb3>] sys_select+0x6e/0x8c
May 19 00:52:16 localhost kernel: [82440.358335] [<c0738295>] syscall_call+0x7/0xb
May 19 00:52:16 localhost kernel: [82440.358337] INFO: lockdep is turned off.
May 19 00:54:16 localhost kernel: [82560.358012] INFO: task events/0:9 blocked for more than 120 seconds.
May 19 00:54:16 localhost kernel: [82560.358016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:54:16 localhost kernel: [82560.358018] events/0 D 00004a96 0 9 2 0x00000000
May 19 00:54:16 localhost kernel: [82560.358023] f7095e48 00000082 6041d18c 00004a96 00004a96 6041fa09 f0b93e22 00000dd4
May 19 00:54:16 localhost kernel: [82560.358031] c09bb3c0 c09bb3c0 c09bb3c0 0000287d f708a460 f708a700 c24083c0 00000000
May 19 00:54:16 localhost kernel: [82560.358038] f708a460 60420163 00004a96 00000002 00000000 f708a460 c240840c 00004a96
May 19 00:54:16 localhost kernel: [82560.358045] Call Trace:
May 19 00:54:16 localhost kernel: [82560.358055] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:54:16 localhost kernel: [82560.358060] [<c045951f>] ? trace_hardirqs_off_caller+0x18/0x91
May 19 00:54:16 localhost kernel: [82560.358064] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:54:16 localhost kernel: [82560.358067] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:54:16 localhost kernel: [82560.358070] [<c07373ba>] __down_common+0x76/0xad
May 19 00:54:16 localhost kernel: [82560.358074] [<c073743c>] __down+0x12/0x14
May 19 00:54:16 localhost kernel: [82560.358078] [<c044f437>] down+0x22/0x2f
May 19 00:54:16 localhost kernel: [82560.358083] [<fa863bef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 19 00:54:16 localhost kernel: [82560.358087] [<fa863c36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 19 00:54:16 localhost kernel: [82560.358092] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 19 00:54:16 localhost kernel: [82560.358095] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 19 00:54:16 localhost kernel: [82560.358099] [<c0448303>] worker_thread+0x1a1/0x272
May 19 00:54:16 localhost kernel: [82560.358102] [<c04482b9>] ? worker_thread+0x157/0x272
May 19 00:54:16 localhost kernel: [82560.358105] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 19 00:54:16 localhost kernel: [82560.358109] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 19 00:54:16 localhost kernel: [82560.358112] [<c0448162>] ? worker_thread+0x0/0x272
May 19 00:54:16 localhost kernel: [82560.358116] [<c044b1d9>] kthread+0x61/0x66
May 19 00:54:16 localhost kernel: [82560.358119] [<c044b178>] ? kthread+0x0/0x66
May 19 00:54:16 localhost kernel: [82560.358123] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 19 00:54:16 localhost kernel: [82560.358125] INFO: lockdep is turned off.
May 19 00:54:16 localhost kernel: [82560.358169] INFO: task X:3712 blocked for more than 120 seconds.
May 19 00:54:16 localhost kernel: [82560.358171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 19 00:54:16 localhost kernel: [82560.358173] X D 00004a96 0 3712 3694 0x00400084
May 19 00:54:16 localhost kernel: [82560.358177] f6b37a24 00003092 98a9c70e 00004a96 ffffffff 00000000 c25038ec 00000000
May 19 00:54:16 localhost kernel: [82560.358184] c09bb3c0 c09bb3c0 c09bb3c0 c09b66fc f4abb690 f4abb930 c24083c0 00000000
May 19 00:54:16 localhost kernel: [82560.358191] 04decd95 00000002 00000000 f4abb690 00000002 00000000 00003046 c24036fc
May 19 00:54:16 localhost kernel: [82560.358198] Call Trace:
May 19 00:54:16 localhost kernel: [82560.358202] [<c0736810>] schedule_timeout+0x16/0x9a
May 19 00:54:16 localhost kernel: [82560.358206] [<c0736681>] ? wait_for_common+0x31/0xec
May 19 00:54:16 localhost kernel: [82560.358209] [<c0459f7f>] ? trace_hardirqs_on_caller+0x18/0x12e
May 19 00:54:16 localhost kernel: [82560.358213] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 19 00:54:16 localhost kernel: [82560.358216] [<c07366f7>] wait_for_common+0xa7/0xec
May 19 00:54:16 localhost kernel: [82560.358220] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 19 00:54:16 localhost kernel: [82560.358224] [<c07367ae>] wait_for_completion+0x12/0x14
May 19 00:54:16 localhost kernel: [82560.358227] [<c0448c56>] flush_work+0xa1/0xb2
May 19 00:54:16 localhost kernel: [82560.358230] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 19 00:54:16 localhost kernel: [82560.358233] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 19 00:54:16 localhost kernel: [82560.358237] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 19 00:54:16 localhost kernel: [82560.358240] [<c060b631>] n_tty_poll+0x54/0x127
May 19 00:54:16 localhost kernel: [82560.358243] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 19 00:54:16 localhost kernel: [82560.358246] [<c0608322>] tty_poll+0x4c/0x62
May 19 00:54:16 localhost kernel: [82560.358250] [<c04d8907>] do_select+0x3a8/0x5cf
May 19 00:54:16 localhost kernel: [82560.358254] [<c042730d>] ? update_curr+0x177/0x17f
May 19 00:54:16 localhost kernel: [82560.358258] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 19 00:54:16 localhost kernel: [82560.358261] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358264] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358267] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358270] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358273] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358276] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358279] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358281] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358284] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358287] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358290] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358293] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358296] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358299] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358302] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358305] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358308] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358310] [<c04d8f7d>] ? pollwake+0x0/0x63
May 19 00:54:16 localhost kernel: [82560.358314] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 19 00:54:16 localhost kernel: [82560.358319] [<c04adcfd>] ? might_fault+0x47/0x81
May 19 00:54:16 localhost kernel: [82560.358322] [<c04d7279>] ? do_vfs_ioctl+0x49b/0x4d5
May 19 00:54:16 localhost kernel: [82560.358325] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 19 00:54:16 localhost kernel: [82560.358329] [<c04d8eb3>] sys_select+0x6e/0x8c
May 19 00:54:16 localhost kernel: [82560.358332] [<c0738295>] syscall_call+0x7/0xb
May 19 00:54:16 localhost kernel: [82560.358334] INFO: lockdep is turned off.
and another interesting case:
May 19 19:36:08 localhost kernel: [ 0.000000] Linux version 2.6.33.2v1 (rz@rz) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #3 SMP Thu Apr 8 14:27:58 CEST 2010
....
....
....
May 20 00:23:54 localhost kernel: [17520.343017] INFO: task events/1:10 blocked for more than 120 seconds.
May 20 00:23:54 localhost kernel: [17520.343020] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:23:54 localhost kernel: [17520.343023] events/1 D 00000fc0 0 10 2 0x00000000
May 20 00:23:54 localhost kernel: [17520.343027] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8
May 20 00:23:54 localhost kernel: [17520.343034] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001
May 20 00:23:54 localhost kernel: [17520.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576
May 20 00:23:54 localhost kernel: [17520.343047] Call Trace:
May 20 00:23:54 localhost kernel: [17520.343057] [<c045b644>] ? __lock_acquire+0xa67/0xbb7
May 20 00:23:54 localhost kernel: [17520.343060] [<c045b6c8>] ? __lock_acquire+0xaeb/0xbb7
May 20 00:23:54 localhost kernel: [17520.343066] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:23:54 localhost kernel: [17520.343069] [<c0459e04>] ? mark_held_locks+0x43/0x5b
May 20 00:23:54 localhost kernel: [17520.343072] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:23:54 localhost kernel: [17520.343076] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:23:54 localhost kernel: [17520.343079] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:23:54 localhost kernel: [17520.343082] [<c07373ba>] __down_common+0x76/0xad
May 20 00:23:54 localhost kernel: [17520.343085] [<c073743c>] __down+0x12/0x14
May 20 00:23:54 localhost kernel: [17520.343089] [<c044f437>] down+0x22/0x2f
May 20 00:23:54 localhost kernel: [17520.343094] [<fa85cbef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 20 00:23:54 localhost kernel: [17520.343097] [<fa85cc36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 20 00:23:54 localhost kernel: [17520.343102] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 20 00:23:54 localhost kernel: [17520.343106] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 20 00:23:54 localhost kernel: [17520.343110] [<c0448303>] worker_thread+0x1a1/0x272
May 20 00:23:54 localhost kernel: [17520.343113] [<c04482b9>] ? worker_thread+0x157/0x272
May 20 00:23:54 localhost kernel: [17520.343116] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 20 00:23:54 localhost kernel: [17520.343119] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 20 00:23:54 localhost kernel: [17520.343122] [<c0448162>] ? worker_thread+0x0/0x272
May 20 00:23:54 localhost kernel: [17520.343125] [<c044b1d9>] kthread+0x61/0x66
May 20 00:23:54 localhost kernel: [17520.343137] [<c044b178>] ? kthread+0x0/0x66
May 20 00:23:54 localhost kernel: [17520.343141] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 20 00:23:54 localhost kernel: [17520.343144] 2 locks held by events/1/10:
May 20 00:23:54 localhost kernel: [17520.343146] #0: (events){+.+.+.}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:23:54 localhost kernel: [17520.343153] #1: ((&tty->hangup_work)#2){+.+...}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:23:54 localhost kernel: [17520.343207] INFO: task X:3782 blocked for more than 120 seconds.
May 20 00:23:54 localhost kernel: [17520.343208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:23:54 localhost kernel: [17520.343211] X D 00000fc4 0 3782 3764 0x00400084
May 20 00:23:54 localhost kernel: [17520.343215] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230
May 20 00:23:54 localhost kernel: [17520.343225] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000
May 20 00:23:54 localhost kernel: [17520.343234] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230
May 20 00:23:54 localhost kernel: [17520.343243] Call Trace:
May 20 00:23:54 localhost kernel: [17520.343248] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:23:54 localhost kernel: [17520.343251] [<c0736681>] ? wait_for_common+0x31/0xec
May 20 00:23:54 localhost kernel: [17520.343255] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:23:54 localhost kernel: [17520.343258] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:23:54 localhost kernel: [17520.343262] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:23:54 localhost kernel: [17520.343265] [<c07366f7>] wait_for_common+0xa7/0xec
May 20 00:23:54 localhost kernel: [17520.343270] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 20 00:23:54 localhost kernel: [17520.343273] [<c07367ae>] wait_for_completion+0x12/0x14
May 20 00:23:54 localhost kernel: [17520.343277] [<c0448c56>] flush_work+0xa1/0xb2
May 20 00:23:54 localhost kernel: [17520.343280] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 20 00:23:54 localhost kernel: [17520.343283] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 20 00:23:54 localhost kernel: [17520.343287] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 20 00:23:54 localhost kernel: [17520.343290] [<c060b631>] n_tty_poll+0x54/0x127
May 20 00:23:54 localhost kernel: [17520.343294] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 20 00:23:54 localhost kernel: [17520.343297] [<c0608322>] tty_poll+0x4c/0x62
May 20 00:23:54 localhost kernel: [17520.343301] [<c04d8907>] do_select+0x3a8/0x5cf
May 20 00:23:54 localhost kernel: [17520.343305] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 20 00:23:54 localhost kernel: [17520.343309] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:23:54 localhost kernel: [17520.343312] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:23:54 localhost kernel: [17520.343315] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:23:54 localhost kernel: [17520.343318] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:23:54 localhost kernel: [17520.343321] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:23:54 localhost kernel: [17520.343325] [<c04595a3>] ? trace_hardirqs_off+0xb/0xd
May 20 00:23:54 localhost kernel: [17520.343328] [<c073803c>] ? _raw_spin_unlock_irqrestore+0x38/0x4c
May 20 00:23:54 localhost kernel: [17520.343332] [<c0431bb1>] ? try_to_wake_up+0x31f/0x32a
May 20 00:23:54 localhost kernel: [17520.343335] [<c0459029>] ? register_lock_class+0x17/0x2a4
May 20 00:23:54 localhost kernel: [17520.343339] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:23:54 localhost kernel: [17520.343342] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:23:54 localhost kernel: [17520.343345] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:23:54 localhost kernel: [17520.343349] [<c045af51>] ? __lock_acquire+0x374/0xbb7
May 20 00:23:54 localhost kernel: [17520.343353] [<c045b9a0>] ? lock_release_non_nested+0x84/0x1db
May 20 00:23:54 localhost kernel: [17520.343357] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:23:54 localhost kernel: [17520.343361] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:23:54 localhost kernel: [17520.343364] [<c04add32>] ? might_fault+0x7c/0x81
May 20 00:23:54 localhost kernel: [17520.343369] [<c05b3723>] ? _copy_from_user+0x2d/0x106
May 20 00:23:54 localhost kernel: [17520.343373] [<c04d7c5c>] ? copy_from_user+0x8/0xa
May 20 00:23:54 localhost kernel: [17520.343376] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 20 00:23:54 localhost kernel: [17520.343380] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:23:54 localhost kernel: [17520.343384] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 20 00:23:54 localhost kernel: [17520.343387] [<c04d8eb3>] sys_select+0x6e/0x8c
May 20 00:23:54 localhost kernel: [17520.343391] [<c0738295>] syscall_call+0x7/0xb
May 20 00:23:54 localhost kernel: [17520.343393] no locks held by X/3782.
May 20 00:25:54 localhost kernel: [17640.343015] INFO: task events/1:10 blocked for more than 120 seconds.
May 20 00:25:54 localhost kernel: [17640.343018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:25:54 localhost kernel: [17640.343021] events/1 D 00000fc0 0 10 2 0x00000000
May 20 00:25:54 localhost kernel: [17640.343025] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8
May 20 00:25:54 localhost kernel: [17640.343032] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001
May 20 00:25:54 localhost kernel: [17640.343039] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576
May 20 00:25:54 localhost kernel: [17640.343045] Call Trace:
May 20 00:25:54 localhost kernel: [17640.343055] [<c045b644>] ? __lock_acquire+0xa67/0xbb7
May 20 00:25:54 localhost kernel: [17640.343058] [<c045b6c8>] ? __lock_acquire+0xaeb/0xbb7
May 20 00:25:54 localhost kernel: [17640.343064] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:25:54 localhost kernel: [17640.343067] [<c0459e04>] ? mark_held_locks+0x43/0x5b
May 20 00:25:54 localhost kernel: [17640.343071] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:25:54 localhost kernel: [17640.343074] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:25:54 localhost kernel: [17640.343077] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:25:54 localhost kernel: [17640.343080] [<c07373ba>] __down_common+0x76/0xad
May 20 00:25:54 localhost kernel: [17640.343084] [<c073743c>] __down+0x12/0x14
May 20 00:25:54 localhost kernel: [17640.343087] [<c044f437>] down+0x22/0x2f
May 20 00:25:54 localhost kernel: [17640.343092] [<fa85cbef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 20 00:25:54 localhost kernel: [17640.343096] [<fa85cc36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 20 00:25:54 localhost kernel: [17640.343101] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 20 00:25:54 localhost kernel: [17640.343104] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 20 00:25:54 localhost kernel: [17640.343108] [<c0448303>] worker_thread+0x1a1/0x272
May 20 00:25:54 localhost kernel: [17640.343111] [<c04482b9>] ? worker_thread+0x157/0x272
May 20 00:25:54 localhost kernel: [17640.343114] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 20 00:25:54 localhost kernel: [17640.343118] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 20 00:25:54 localhost kernel: [17640.343121] [<c0448162>] ? worker_thread+0x0/0x272
May 20 00:25:54 localhost kernel: [17640.343124] [<c044b1d9>] kthread+0x61/0x66
May 20 00:25:54 localhost kernel: [17640.343135] [<c044b178>] ? kthread+0x0/0x66
May 20 00:25:54 localhost kernel: [17640.343140] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 20 00:25:54 localhost kernel: [17640.343143] 2 locks held by events/1/10:
May 20 00:25:54 localhost kernel: [17640.343145] #0: (events){+.+.+.}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:25:54 localhost kernel: [17640.343152] #1: ((&tty->hangup_work)#2){+.+...}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:25:54 localhost kernel: [17640.343206] INFO: task X:3782 blocked for more than 120 seconds.
May 20 00:25:54 localhost kernel: [17640.343208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:25:54 localhost kernel: [17640.343210] X D 00000fc4 0 3782 3764 0x00400084
May 20 00:25:54 localhost kernel: [17640.343215] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230
May 20 00:25:54 localhost kernel: [17640.343224] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000
May 20 00:25:54 localhost kernel: [17640.343233] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230
May 20 00:25:54 localhost kernel: [17640.343242] Call Trace:
May 20 00:25:54 localhost kernel: [17640.343247] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:25:54 localhost kernel: [17640.343251] [<c0736681>] ? wait_for_common+0x31/0xec
May 20 00:25:54 localhost kernel: [17640.343254] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:25:54 localhost kernel: [17640.343258] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:25:54 localhost kernel: [17640.343261] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:25:54 localhost kernel: [17640.343265] [<c07366f7>] wait_for_common+0xa7/0xec
May 20 00:25:54 localhost kernel: [17640.343269] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 20 00:25:54 localhost kernel: [17640.343273] [<c07367ae>] wait_for_completion+0x12/0x14
May 20 00:25:54 localhost kernel: [17640.343276] [<c0448c56>] flush_work+0xa1/0xb2
May 20 00:25:54 localhost kernel: [17640.343280] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 20 00:25:54 localhost kernel: [17640.343283] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 20 00:25:54 localhost kernel: [17640.343287] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 20 00:25:54 localhost kernel: [17640.343290] [<c060b631>] n_tty_poll+0x54/0x127
May 20 00:25:54 localhost kernel: [17640.343294] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 20 00:25:54 localhost kernel: [17640.343297] [<c0608322>] tty_poll+0x4c/0x62
May 20 00:25:54 localhost kernel: [17640.343301] [<c04d8907>] do_select+0x3a8/0x5cf
May 20 00:25:54 localhost kernel: [17640.343305] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 20 00:25:54 localhost kernel: [17640.343308] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:25:54 localhost kernel: [17640.343311] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:25:54 localhost kernel: [17640.343315] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:25:54 localhost kernel: [17640.343318] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:25:54 localhost kernel: [17640.343321] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:25:54 localhost kernel: [17640.343324] [<c04595a3>] ? trace_hardirqs_off+0xb/0xd
May 20 00:25:54 localhost kernel: [17640.343328] [<c073803c>] ? _raw_spin_unlock_irqrestore+0x38/0x4c
May 20 00:25:54 localhost kernel: [17640.343331] [<c0431bb1>] ? try_to_wake_up+0x31f/0x32a
May 20 00:25:54 localhost kernel: [17640.343335] [<c0459029>] ? register_lock_class+0x17/0x2a4
May 20 00:25:54 localhost kernel: [17640.343338] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:25:54 localhost kernel: [17640.343341] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:25:54 localhost kernel: [17640.343345] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:25:54 localhost kernel: [17640.343348] [<c045af51>] ? __lock_acquire+0x374/0xbb7
May 20 00:25:54 localhost kernel: [17640.343352] [<c045b9a0>] ? lock_release_non_nested+0x84/0x1db
May 20 00:25:54 localhost kernel: [17640.343357] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:25:54 localhost kernel: [17640.343360] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:25:54 localhost kernel: [17640.343364] [<c04add32>] ? might_fault+0x7c/0x81
May 20 00:25:54 localhost kernel: [17640.343368] [<c05b3723>] ? _copy_from_user+0x2d/0x106
May 20 00:25:54 localhost kernel: [17640.343372] [<c04d7c5c>] ? copy_from_user+0x8/0xa
May 20 00:25:54 localhost kernel: [17640.343375] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 20 00:25:54 localhost kernel: [17640.343379] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:25:54 localhost kernel: [17640.343383] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 20 00:25:54 localhost kernel: [17640.343386] [<c04d8eb3>] sys_select+0x6e/0x8c
May 20 00:25:54 localhost kernel: [17640.343389] [<c0738295>] syscall_call+0x7/0xb
May 20 00:25:54 localhost kernel: [17640.343392] no locks held by X/3782.
May 20 00:27:54 localhost kernel: [17760.343015] INFO: task events/1:10 blocked for more than 120 seconds.
May 20 00:27:54 localhost kernel: [17760.343018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:27:54 localhost kernel: [17760.343021] events/1 D 00000fc0 0 10 2 0x00000000
May 20 00:27:54 localhost kernel: [17760.343025] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8
May 20 00:27:54 localhost kernel: [17760.343033] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001
May 20 00:27:54 localhost kernel: [17760.343039] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576
May 20 00:27:54 localhost kernel: [17760.343046] Call Trace:
May 20 00:27:54 localhost kernel: [17760.343055] [<c045b644>] ? __lock_acquire+0xa67/0xbb7
May 20 00:27:54 localhost kernel: [17760.343059] [<c045b6c8>] ? __lock_acquire+0xaeb/0xbb7
May 20 00:27:54 localhost kernel: [17760.343064] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:27:54 localhost kernel: [17760.343068] [<c0459e04>] ? mark_held_locks+0x43/0x5b
May 20 00:27:54 localhost kernel: [17760.343071] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:27:54 localhost kernel: [17760.343075] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:27:54 localhost kernel: [17760.343078] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:27:54 localhost kernel: [17760.343081] [<c07373ba>] __down_common+0x76/0xad
May 20 00:27:54 localhost kernel: [17760.343084] [<c073743c>] __down+0x12/0x14
May 20 00:27:54 localhost kernel: [17760.343088] [<c044f437>] down+0x22/0x2f
May 20 00:27:54 localhost kernel: [17760.343093] [<fa85cbef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 20 00:27:54 localhost kernel: [17760.343096] [<fa85cc36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 20 00:27:54 localhost kernel: [17760.343101] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 20 00:27:54 localhost kernel: [17760.343104] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 20 00:27:54 localhost kernel: [17760.343108] [<c0448303>] worker_thread+0x1a1/0x272
May 20 00:27:54 localhost kernel: [17760.343111] [<c04482b9>] ? worker_thread+0x157/0x272
May 20 00:27:54 localhost kernel: [17760.343114] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 20 00:27:54 localhost kernel: [17760.343118] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 20 00:27:54 localhost kernel: [17760.343121] [<c0448162>] ? worker_thread+0x0/0x272
May 20 00:27:54 localhost kernel: [17760.343124] [<c044b1d9>] kthread+0x61/0x66
May 20 00:27:54 localhost kernel: [17760.343134] [<c044b178>] ? kthread+0x0/0x66
May 20 00:27:54 localhost kernel: [17760.343139] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 20 00:27:54 localhost kernel: [17760.343142] 2 locks held by events/1/10:
May 20 00:27:54 localhost kernel: [17760.343143] #0: (events){+.+.+.}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:27:54 localhost kernel: [17760.343151] #1: ((&tty->hangup_work)#2){+.+...}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:27:54 localhost kernel: [17760.343204] INFO: task X:3782 blocked for more than 120 seconds.
May 20 00:27:54 localhost kernel: [17760.343206] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:27:54 localhost kernel: [17760.343208] X D 00000fc4 0 3782 3764 0x00400084
May 20 00:27:54 localhost kernel: [17760.343213] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230
May 20 00:27:54 localhost kernel: [17760.343222] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000
May 20 00:27:54 localhost kernel: [17760.343232] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230
May 20 00:27:54 localhost kernel: [17760.343241] Call Trace:
May 20 00:27:54 localhost kernel: [17760.343246] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:27:54 localhost kernel: [17760.343249] [<c0736681>] ? wait_for_common+0x31/0xec
May 20 00:27:54 localhost kernel: [17760.343253] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:27:54 localhost kernel: [17760.343257] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:27:54 localhost kernel: [17760.343260] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:27:54 localhost kernel: [17760.343264] [<c07366f7>] wait_for_common+0xa7/0xec
May 20 00:27:54 localhost kernel: [17760.343268] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 20 00:27:54 localhost kernel: [17760.343272] [<c07367ae>] wait_for_completion+0x12/0x14
May 20 00:27:54 localhost kernel: [17760.343275] [<c0448c56>] flush_work+0xa1/0xb2
May 20 00:27:54 localhost kernel: [17760.343278] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 20 00:27:54 localhost kernel: [17760.343282] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 20 00:27:54 localhost kernel: [17760.343286] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 20 00:27:54 localhost kernel: [17760.343289] [<c060b631>] n_tty_poll+0x54/0x127
May 20 00:27:54 localhost kernel: [17760.343292] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 20 00:27:54 localhost kernel: [17760.343296] [<c0608322>] tty_poll+0x4c/0x62
May 20 00:27:54 localhost kernel: [17760.343300] [<c04d8907>] do_select+0x3a8/0x5cf
May 20 00:27:54 localhost kernel: [17760.343304] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 20 00:27:54 localhost kernel: [17760.343307] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:27:54 localhost kernel: [17760.343310] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:27:54 localhost kernel: [17760.343313] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:27:54 localhost kernel: [17760.343317] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:27:54 localhost kernel: [17760.343320] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:27:54 localhost kernel: [17760.343323] [<c04595a3>] ? trace_hardirqs_off+0xb/0xd
May 20 00:27:54 localhost kernel: [17760.343327] [<c073803c>] ? _raw_spin_unlock_irqrestore+0x38/0x4c
May 20 00:27:54 localhost kernel: [17760.343330] [<c0431bb1>] ? try_to_wake_up+0x31f/0x32a
May 20 00:27:54 localhost kernel: [17760.343334] [<c0459029>] ? register_lock_class+0x17/0x2a4
May 20 00:27:54 localhost kernel: [17760.343337] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:27:54 localhost kernel: [17760.343341] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:27:54 localhost kernel: [17760.343344] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:27:54 localhost kernel: [17760.343348] [<c045af51>] ? __lock_acquire+0x374/0xbb7
May 20 00:27:54 localhost kernel: [17760.343351] [<c045b9a0>] ? lock_release_non_nested+0x84/0x1db
May 20 00:27:54 localhost kernel: [17760.343356] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:27:54 localhost kernel: [17760.343360] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:27:54 localhost kernel: [17760.343363] [<c04add32>] ? might_fault+0x7c/0x81
May 20 00:27:54 localhost kernel: [17760.343368] [<c05b3723>] ? _copy_from_user+0x2d/0x106
May 20 00:27:54 localhost kernel: [17760.343372] [<c04d7c5c>] ? copy_from_user+0x8/0xa
May 20 00:27:54 localhost kernel: [17760.343375] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 20 00:27:54 localhost kernel: [17760.343379] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:27:54 localhost kernel: [17760.343383] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 20 00:27:54 localhost kernel: [17760.343386] [<c04d8eb3>] sys_select+0x6e/0x8c
May 20 00:27:54 localhost kernel: [17760.343389] [<c0738295>] syscall_call+0x7/0xb
May 20 00:27:54 localhost kernel: [17760.343392] no locks held by X/3782.
May 20 00:29:54 localhost kernel: [17880.343017] INFO: task events/1:10 blocked for more than 120 seconds.
May 20 00:29:54 localhost kernel: [17880.343020] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:29:54 localhost kernel: [17880.343023] events/1 D 00000fc0 0 10 2 0x00000000
May 20 00:29:54 localhost kernel: [17880.343028] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8
May 20 00:29:54 localhost kernel: [17880.343035] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001
May 20 00:29:54 localhost kernel: [17880.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576
May 20 00:29:54 localhost kernel: [17880.343048] Call Trace:
May 20 00:29:54 localhost kernel: [17880.343058] [<c045b644>] ? __lock_acquire+0xa67/0xbb7
May 20 00:29:54 localhost kernel: [17880.343061] [<c045b6c8>] ? __lock_acquire+0xaeb/0xbb7
May 20 00:29:54 localhost kernel: [17880.343067] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:29:54 localhost kernel: [17880.343071] [<c0459e04>] ? mark_held_locks+0x43/0x5b
May 20 00:29:54 localhost kernel: [17880.343074] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:29:54 localhost kernel: [17880.343077] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:29:54 localhost kernel: [17880.343081] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:29:54 localhost kernel: [17880.343084] [<c07373ba>] __down_common+0x76/0xad
May 20 00:29:54 localhost kernel: [17880.343087] [<c073743c>] __down+0x12/0x14
May 20 00:29:54 localhost kernel: [17880.343091] [<c044f437>] down+0x22/0x2f
May 20 00:29:54 localhost kernel: [17880.343096] [<fa85cbef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 20 00:29:54 localhost kernel: [17880.343100] [<fa85cc36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 20 00:29:54 localhost kernel: [17880.343105] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 20 00:29:54 localhost kernel: [17880.343108] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 20 00:29:54 localhost kernel: [17880.343112] [<c0448303>] worker_thread+0x1a1/0x272
May 20 00:29:54 localhost kernel: [17880.343115] [<c04482b9>] ? worker_thread+0x157/0x272
May 20 00:29:54 localhost kernel: [17880.343118] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 20 00:29:54 localhost kernel: [17880.343122] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 20 00:29:54 localhost kernel: [17880.343125] [<c0448162>] ? worker_thread+0x0/0x272
May 20 00:29:54 localhost kernel: [17880.343136] [<c044b1d9>] kthread+0x61/0x66
May 20 00:29:54 localhost kernel: [17880.343140] [<c044b178>] ? kthread+0x0/0x66
May 20 00:29:54 localhost kernel: [17880.343144] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 20 00:29:54 localhost kernel: [17880.343147] 2 locks held by events/1/10:
May 20 00:29:54 localhost kernel: [17880.343149] #0: (events){+.+.+.}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:29:54 localhost kernel: [17880.343156] #1: ((&tty->hangup_work)#2){+.+...}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:29:54 localhost kernel: [17880.343208] INFO: task X:3782 blocked for more than 120 seconds.
May 20 00:29:54 localhost kernel: [17880.343210] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:29:54 localhost kernel: [17880.343213] X D 00000fc4 0 3782 3764 0x00400084
May 20 00:29:54 localhost kernel: [17880.343218] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230
May 20 00:29:54 localhost kernel: [17880.343227] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000
May 20 00:29:54 localhost kernel: [17880.343236] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230
May 20 00:29:54 localhost kernel: [17880.343245] Call Trace:
May 20 00:29:54 localhost kernel: [17880.343250] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:29:54 localhost kernel: [17880.343254] [<c0736681>] ? wait_for_common+0x31/0xec
May 20 00:29:54 localhost kernel: [17880.343257] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:29:54 localhost kernel: [17880.343261] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:29:54 localhost kernel: [17880.343264] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:29:54 localhost kernel: [17880.343268] [<c07366f7>] wait_for_common+0xa7/0xec
May 20 00:29:54 localhost kernel: [17880.343272] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 20 00:29:54 localhost kernel: [17880.343276] [<c07367ae>] wait_for_completion+0x12/0x14
May 20 00:29:54 localhost kernel: [17880.343279] [<c0448c56>] flush_work+0xa1/0xb2
May 20 00:29:54 localhost kernel: [17880.343282] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 20 00:29:54 localhost kernel: [17880.343286] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 20 00:29:54 localhost kernel: [17880.343290] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 20 00:29:54 localhost kernel: [17880.343294] [<c060b631>] n_tty_poll+0x54/0x127
May 20 00:29:54 localhost kernel: [17880.343297] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 20 00:29:54 localhost kernel: [17880.343300] [<c0608322>] tty_poll+0x4c/0x62
May 20 00:29:54 localhost kernel: [17880.343304] [<c04d8907>] do_select+0x3a8/0x5cf
May 20 00:29:54 localhost kernel: [17880.343308] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 20 00:29:54 localhost kernel: [17880.343312] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:29:54 localhost kernel: [17880.343315] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:29:54 localhost kernel: [17880.343318] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:29:54 localhost kernel: [17880.343321] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:29:54 localhost kernel: [17880.343324] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:29:54 localhost kernel: [17880.343328] [<c04595a3>] ? trace_hardirqs_off+0xb/0xd
May 20 00:29:54 localhost kernel: [17880.343331] [<c073803c>] ? _raw_spin_unlock_irqrestore+0x38/0x4c
May 20 00:29:54 localhost kernel: [17880.343335] [<c0431bb1>] ? try_to_wake_up+0x31f/0x32a
May 20 00:29:54 localhost kernel: [17880.343338] [<c0459029>] ? register_lock_class+0x17/0x2a4
May 20 00:29:54 localhost kernel: [17880.343341] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:29:54 localhost kernel: [17880.343345] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:29:54 localhost kernel: [17880.343348] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:29:54 localhost kernel: [17880.343352] [<c045af51>] ? __lock_acquire+0x374/0xbb7
May 20 00:29:54 localhost kernel: [17880.343356] [<c045b9a0>] ? lock_release_non_nested+0x84/0x1db
May 20 00:29:54 localhost kernel: [17880.343360] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:29:54 localhost kernel: [17880.343364] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:29:54 localhost kernel: [17880.343367] [<c04add32>] ? might_fault+0x7c/0x81
May 20 00:29:54 localhost kernel: [17880.343372] [<c05b3723>] ? _copy_from_user+0x2d/0x106
May 20 00:29:54 localhost kernel: [17880.343376] [<c04d7c5c>] ? copy_from_user+0x8/0xa
May 20 00:29:54 localhost kernel: [17880.343379] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 20 00:29:54 localhost kernel: [17880.343384] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:29:54 localhost kernel: [17880.343387] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 20 00:29:54 localhost kernel: [17880.343390] [<c04d8eb3>] sys_select+0x6e/0x8c
May 20 00:29:54 localhost kernel: [17880.343394] [<c0738295>] syscall_call+0x7/0xb
May 20 00:29:54 localhost kernel: [17880.343396] no locks held by X/3782.
May 20 00:31:54 localhost kernel: [18000.343016] INFO: task events/1:10 blocked for more than 120 seconds.
May 20 00:31:54 localhost kernel: [18000.343019] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:31:54 localhost kernel: [18000.343022] events/1 D 00000fc0 0 10 2 0x00000000
May 20 00:31:54 localhost kernel: [18000.343027] f7097e48 00000082 b19aeb18 00000fc0 f7097e74 c045b644 f7097e74 c045b6c8
May 20 00:31:54 localhost kernel: [18000.343034] c09bb3c0 c09bb3c0 c09bb3c0 e882a416 f708b690 f708b930 c25083c0 00000001
May 20 00:31:54 localhost kernel: [18000.343041] f708b690 b19ee045 00000fc0 00000002 00000002 00000001 f708bb88 00004576
May 20 00:31:54 localhost kernel: [18000.343047] Call Trace:
May 20 00:31:54 localhost kernel: [18000.343056] [<c045b644>] ? __lock_acquire+0xa67/0xbb7
May 20 00:31:54 localhost kernel: [18000.343060] [<c045b6c8>] ? __lock_acquire+0xaeb/0xbb7
May 20 00:31:54 localhost kernel: [18000.343066] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:31:54 localhost kernel: [18000.343069] [<c0459e04>] ? mark_held_locks+0x43/0x5b
May 20 00:31:54 localhost kernel: [18000.343073] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:31:54 localhost kernel: [18000.343076] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:31:54 localhost kernel: [18000.343079] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:31:54 localhost kernel: [18000.343082] [<c07373ba>] __down_common+0x76/0xad
May 20 00:31:54 localhost kernel: [18000.343085] [<c073743c>] __down+0x12/0x14
May 20 00:31:54 localhost kernel: [18000.343089] [<c044f437>] down+0x22/0x2f
May 20 00:31:54 localhost kernel: [18000.343094] [<fa85cbef>] ppp_asynctty_close+0x4a/0x89 [ppp_async]
May 20 00:31:54 localhost kernel: [18000.343098] [<fa85cc36>] ppp_asynctty_hangup+0x8/0xc [ppp_async]
May 20 00:31:54 localhost kernel: [18000.343103] [<c060ec35>] tty_ldisc_hangup+0x64/0x19c
May 20 00:31:54 localhost kernel: [18000.343106] [<c0608c56>] do_tty_hangup+0xe4/0x2d7
May 20 00:31:54 localhost kernel: [18000.343110] [<c0448303>] worker_thread+0x1a1/0x272
May 20 00:31:54 localhost kernel: [18000.343113] [<c04482b9>] ? worker_thread+0x157/0x272
May 20 00:31:54 localhost kernel: [18000.343116] [<c0608b72>] ? do_tty_hangup+0x0/0x2d7
May 20 00:31:54 localhost kernel: [18000.343120] [<c044b52b>] ? autoremove_wake_function+0x0/0x33
May 20 00:31:54 localhost kernel: [18000.343123] [<c0448162>] ? worker_thread+0x0/0x272
May 20 00:31:54 localhost kernel: [18000.343134] [<c044b1d9>] kthread+0x61/0x66
May 20 00:31:54 localhost kernel: [18000.343137] [<c044b178>] ? kthread+0x0/0x66
May 20 00:31:54 localhost kernel: [18000.343142] [<c04035ba>] kernel_thread_helper+0x6/0x1a
May 20 00:31:54 localhost kernel: [18000.343145] 2 locks held by events/1/10:
May 20 00:31:54 localhost kernel: [18000.343147] #0: (events){+.+.+.}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:31:54 localhost kernel: [18000.343154] #1: ((&tty->hangup_work)#2){+.+...}, at: [<c04482b9>] worker_thread+0x157/0x272
May 20 00:31:54 localhost kernel: [18000.343207] INFO: task X:3782 blocked for more than 120 seconds.
May 20 00:31:54 localhost kernel: [18000.343209] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 20 00:31:54 localhost kernel: [18000.343212] X D 00000fc4 0 3782 3764 0x00400084
May 20 00:31:54 localhost kernel: [18000.343217] ec9d1a24 00003092 5fe0c262 00000fc4 00000000 00000001 ebd31720 ebd31230
May 20 00:31:54 localhost kernel: [18000.343226] c09bb3c0 c09bb3c0 c09bb3c0 ebd31230 ebd31230 ebd314d0 c24083c0 00000000
May 20 00:31:54 localhost kernel: [18000.343235] 0000006a 00000002 00000000 ebd31230 00000000 00000001 00003046 ebd31230
May 20 00:31:54 localhost kernel: [18000.343245] Call Trace:
May 20 00:31:54 localhost kernel: [18000.343249] [<c0736810>] schedule_timeout+0x16/0x9a
May 20 00:31:54 localhost kernel: [18000.343253] [<c0736681>] ? wait_for_common+0x31/0xec
May 20 00:31:54 localhost kernel: [18000.343256] [<c0737ffb>] ? _raw_spin_unlock_irq+0x22/0x2b
May 20 00:31:54 localhost kernel: [18000.343260] [<c045a074>] ? trace_hardirqs_on_caller+0x10d/0x12e
May 20 00:31:54 localhost kernel: [18000.343264] [<c045a0a0>] ? trace_hardirqs_on+0xb/0xd
May 20 00:31:54 localhost kernel: [18000.343267] [<c07366f7>] wait_for_common+0xa7/0xec
May 20 00:31:54 localhost kernel: [18000.343272] [<c0431bbc>] ? default_wake_function+0x0/0xd
May 20 00:31:54 localhost kernel: [18000.343275] [<c07367ae>] wait_for_completion+0x12/0x14
May 20 00:31:54 localhost kernel: [18000.343279] [<c0448c56>] flush_work+0xa1/0xb2
May 20 00:31:54 localhost kernel: [18000.343282] [<c044865e>] ? wq_barrier_func+0x0/0xd
May 20 00:31:54 localhost kernel: [18000.343285] [<c0448dc9>] flush_delayed_work+0x40/0x43
May 20 00:31:54 localhost kernel: [18000.343289] [<c060f4d9>] tty_flush_to_ldisc+0xd/0xf
May 20 00:31:54 localhost kernel: [18000.343293] [<c060b631>] n_tty_poll+0x54/0x127
May 20 00:31:54 localhost kernel: [18000.343296] [<c060b5dd>] ? n_tty_poll+0x0/0x127
May 20 00:31:54 localhost kernel: [18000.343299] [<c0608322>] tty_poll+0x4c/0x62
May 20 00:31:54 localhost kernel: [18000.343303] [<c04d8907>] do_select+0x3a8/0x5cf
May 20 00:31:54 localhost kernel: [18000.343307] [<c04d8ed1>] ? __pollwait+0x0/0xac
May 20 00:31:54 localhost kernel: [18000.343311] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:31:54 localhost kernel: [18000.343314] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:31:54 localhost kernel: [18000.343317] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:31:54 localhost kernel: [18000.343320] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:31:54 localhost kernel: [18000.343323] [<c04d8f7d>] ? pollwake+0x0/0x63
May 20 00:31:54 localhost kernel: [18000.343327] [<c04595a3>] ? trace_hardirqs_off+0xb/0xd
May 20 00:31:54 localhost kernel: [18000.343330] [<c073803c>] ? _raw_spin_unlock_irqrestore+0x38/0x4c
May 20 00:31:54 localhost kernel: [18000.343334] [<c0431bb1>] ? try_to_wake_up+0x31f/0x32a
May 20 00:31:54 localhost kernel: [18000.343338] [<c0459029>] ? register_lock_class+0x17/0x2a4
May 20 00:31:54 localhost kernel: [18000.343341] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:31:54 localhost kernel: [18000.343344] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:31:54 localhost kernel: [18000.343348] [<c0459bf5>] ? mark_lock+0x1e/0x1ea
May 20 00:31:54 localhost kernel: [18000.343351] [<c045af51>] ? __lock_acquire+0x374/0xbb7
May 20 00:31:54 localhost kernel: [18000.343355] [<c045b9a0>] ? lock_release_non_nested+0x84/0x1db
May 20 00:31:54 localhost kernel: [18000.343360] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:31:54 localhost kernel: [18000.343363] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:31:54 localhost kernel: [18000.343367] [<c04add32>] ? might_fault+0x7c/0x81
May 20 00:31:54 localhost kernel: [18000.343372] [<c05b3723>] ? _copy_from_user+0x2d/0x106
May 20 00:31:54 localhost kernel: [18000.343375] [<c04d7c5c>] ? copy_from_user+0x8/0xa
May 20 00:31:54 localhost kernel: [18000.343379] [<c04d8c7c>] core_sys_select+0x14e/0x1ce
May 20 00:31:54 localhost kernel: [18000.343383] [<c04adcfd>] ? might_fault+0x47/0x81
May 20 00:31:54 localhost kernel: [18000.343386] [<c0452e70>] ? ktime_get_ts+0xd0/0xda
May 20 00:31:54 localhost kernel: [18000.343390] [<c04d8eb3>] sys_select+0x6e/0x8c
May 20 00:31:54 localhost kernel: [18000.343393] [<c0738295>] syscall_call+0x7/0xb
May 20 00:31:54 localhost kernel: [18000.343396] no locks held by X/3782.
Regards
Richard
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