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Date: Tue, 24 Sep 2013 14:46:30 +0300 (EEST)
From: Meelis Roos <mroos@...ux.ee>
To: Linux Kernel list <linux-kernel@...r.kernel.org>,
linux-i2c@...r.kernel.org
cc: Jean Delvare <khali@...ux-fr.org>, Wolfram Sang <wsa@...-dreams.de>
Subject: i2c-i801 hangs indefinitely on IBM x3550
Tried latest Debian kernel (3.10-3-amd64) and latest upstream kernel
(3.12-rc2) on a decommisioned IBM x3550 server. i2c-i801 is autoloaded
but all access to it seems to wait forever, including stopping reboot
from happening because modprobe is still running and blocked on this.
00:1f.3 SMBus: Intel Corporation 631xESB/632xESB/3100 Chipset SMBus Controller (rev 09)
Subsystem: IBM Device 02dd
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
Interrupt: pin B routed to IRQ 20
Region 4: I/O ports at 0440 [size=32]
Kernel driver in use: i801_smbus
[ 3.028771] i801_smbus 0000:00:1f.3: SMBus using PCI Interrupt
[...]
[ 240.172009] INFO: task modprobe:267 blocked for more than 120 seconds.
[ 240.172074] Not tainted 3.12.0-rc2 #2
[ 240.172127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.172186] modprobe D ffff88003cec83e0 0 267 1 0x00000006
[ 240.172336] ffff88003cec80c0 0000000000000086 0000000000012dc0 ffff88003baf1fd8
[ 240.172572] 0000000000012dc0 ffff88003baf1fd8 ffffffffa0029340 ffff88003baf1a48
[ 240.172808] ffffffffa0029344 ffff88003cec80c0 00000000ffffffff ffffffffa0029348
[ 240.173044] Call Trace:
[ 240.173111] [<ffffffff8147d750>] ? schedule_preempt_disabled+0x20/0x60
[ 240.173170] [<ffffffff8147bac3>] ? __mutex_lock_slowpath+0x133/0x1b0
[ 240.173234] [<ffffffffa0027750>] ? i2c_register_adapter+0x390/0x390 [i2c_core]
[ 240.173293] [<ffffffff8147bb56>] ? mutex_lock+0x16/0x30
[ 240.173350] [<ffffffffa0027761>] ? i2c_add_adapter+0x11/0x60 [i2c_core]
[ 240.173424] [<ffffffffa001b39f>] ? __i2c_bit_add_bus+0x1af/0x360 [i2c_algo_bit]
[ 240.173567] [<ffffffffa027f614>] ? radeon_i2c_create+0x194/0x2a0 [radeon]
[ 240.173662] [<ffffffffa0263232>] ? radeon_combios_i2c_init+0xb2/0x4e0 [radeon]
[ 240.173774] [<ffffffffa027c4b8>] ? radeon_modeset_init+0x1a8/0x990 [radeon]
[ 240.173867] [<ffffffffa025624c>] ? radeon_debugfs_add_files+0xac/0x100 [radeon]
[ 240.173975] [<ffffffffa02576a0>] ? radeon_driver_load_kms+0xe0/0x160 [radeon]
[ 240.174070] [<ffffffffa019146c>] ? drm_get_pci_dev+0x11c/0x2d0 [drm]
[ 240.174144] [<ffffffff812817c8>] ? pci_device_probe+0x78/0xc0
[ 240.174217] [<ffffffff81320448>] ? driver_probe_device+0x68/0x220
[ 240.174288] [<ffffffff813206bb>] ? __driver_attach+0x7b/0x80
[ 240.174359] [<ffffffff81320640>] ? __device_attach+0x40/0x40
[ 240.174429] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 240.174500] [<ffffffff8131fbb8>] ? bus_add_driver+0x1e8/0x290
[ 240.174570] [<ffffffff81320c46>] ? driver_register+0x56/0xd0
[ 240.174644] [<ffffffffa0384000>] ? 0xffffffffa0383fff
[ 240.174715] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 240.174788] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 240.174859] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 240.174929] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 240.175000] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 240.175071] INFO: task modprobe:283 blocked for more than 120 seconds.
[ 240.175142] Not tainted 3.12.0-rc2 #2
[ 240.175208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.175294] modprobe D ffff88003daada90 0 283 1 0x00000004
[ 240.175455] ffff88003daad770 0000000000000086 0000000000012dc0 ffff88003d73bfd8
[ 240.175719] 0000000000012dc0 ffff88003d73bfd8 ffff88003ccb0c00 0000000000000000
[ 240.175982] ffff88003ccb0f90 ffff88003ccb0f70 ffff88003ccb0f80 0000000000000000
[ 240.176264] Call Trace:
[ 240.176332] [<ffffffffa00bb5cd>] ? i801_transaction+0x9d/0x120 [i2c_i801]
[ 240.176407] [<ffffffff8105f340>] ? wake_up_atomic_t+0x30/0x30
[ 240.176479] [<ffffffffa00bb8d5>] ? i801_access+0x285/0xaa0 [i2c_i801]
[ 240.176551] [<ffffffff8125bb8a>] ? number.isra.1+0x31a/0x350
[ 240.176624] [<ffffffff8115c83b>] ? ep_poll_callback+0x10b/0x160
[ 240.176696] [<ffffffffa0026103>] ? i2c_smbus_xfer+0xc3/0x160 [i2c_core]
[ 240.176770] [<ffffffffa0026283>] ? i2c_default_probe+0xe3/0x130 [i2c_core]
[ 240.176843] [<ffffffff8131c372>] ? device_for_each_child+0x52/0x60
[ 240.176916] [<ffffffffa00279db>] ? i2c_do_add_adapter+0x1ab/0x290 [i2c_core]
[ 240.176991] [<ffffffff81255a1a>] ? kobject_uevent_env+0x10a/0x4c0
[ 240.177064] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 240.177151] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 240.177223] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 240.177311] [<ffffffffa00258e8>] ? i2c_for_each_dev+0x28/0x40 [i2c_core]
[ 240.177385] [<ffffffffa00269d9>] ? i2c_register_driver+0x59/0xa0 [i2c_core]
[ 240.177458] [<ffffffffa0005000>] ? 0xffffffffa0004fff
[ 240.177527] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 240.177599] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 240.177670] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 240.177740] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 240.177811] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 360.176013] INFO: task modprobe:267 blocked for more than 120 seconds.
[ 360.176092] Not tainted 3.12.0-rc2 #2
[ 360.176158] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 360.176245] modprobe D ffff88003cec83e0 0 267 1 0x00000006
[ 360.176409] ffff88003cec80c0 0000000000000086 0000000000012dc0 ffff88003baf1fd8
[ 360.176673] 0000000000012dc0 ffff88003baf1fd8 ffffffffa0029340 ffff88003baf1a48
[ 360.176936] ffffffffa0029344 ffff88003cec80c0 00000000ffffffff ffffffffa0029348
[ 360.177200] Call Trace:
[ 360.177282] [<ffffffff8147d750>] ? schedule_preempt_disabled+0x20/0x60
[ 360.177354] [<ffffffff8147bac3>] ? __mutex_lock_slowpath+0x133/0x1b0
[ 360.177431] [<ffffffffa0027750>] ? i2c_register_adapter+0x390/0x390 [i2c_core]
[ 360.177518] [<ffffffff8147bb56>] ? mutex_lock+0x16/0x30
[ 360.177589] [<ffffffffa0027761>] ? i2c_add_adapter+0x11/0x60 [i2c_core]
[ 360.177663] [<ffffffffa001b39f>] ? __i2c_bit_add_bus+0x1af/0x360 [i2c_algo_bit]
[ 360.177806] [<ffffffffa027f614>] ? radeon_i2c_create+0x194/0x2a0 [radeon]
[ 360.177901] [<ffffffffa0263232>] ? radeon_combios_i2c_init+0xb2/0x4e0 [radeon]
[ 360.178013] [<ffffffffa027c4b8>] ? radeon_modeset_init+0x1a8/0x990 [radeon]
[ 360.178106] [<ffffffffa025624c>] ? radeon_debugfs_add_files+0xac/0x100 [radeon]
[ 360.178214] [<ffffffffa02576a0>] ? radeon_driver_load_kms+0xe0/0x160 [radeon]
[ 360.178309] [<ffffffffa019146c>] ? drm_get_pci_dev+0x11c/0x2d0 [drm]
[ 360.178383] [<ffffffff812817c8>] ? pci_device_probe+0x78/0xc0
[ 360.178455] [<ffffffff81320448>] ? driver_probe_device+0x68/0x220
[ 360.178527] [<ffffffff813206bb>] ? __driver_attach+0x7b/0x80
[ 360.178597] [<ffffffff81320640>] ? __device_attach+0x40/0x40
[ 360.178668] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 360.178738] [<ffffffff8131fbb8>] ? bus_add_driver+0x1e8/0x290
[ 360.178810] [<ffffffff81320c46>] ? driver_register+0x56/0xd0
[ 360.178883] [<ffffffffa0384000>] ? 0xffffffffa0383fff
[ 360.178953] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 360.179027] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 360.179098] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 360.179168] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 360.179240] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 360.179311] INFO: task modprobe:283 blocked for more than 120 seconds.
[ 360.179382] Not tainted 3.12.0-rc2 #2
[ 360.179448] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 360.179534] modprobe D ffff88003daada90 0 283 1 0x00000004
[ 360.179695] ffff88003daad770 0000000000000086 0000000000012dc0 ffff88003d73bfd8
[ 360.179959] 0000000000012dc0 ffff88003d73bfd8 ffff88003ccb0c00 0000000000000000
[ 360.180239] ffff88003ccb0f90 ffff88003ccb0f70 ffff88003ccb0f80 0000000000000000
[ 360.180503] Call Trace:
[ 360.180570] [<ffffffffa00bb5cd>] ? i801_transaction+0x9d/0x120 [i2c_i801]
[ 360.180644] [<ffffffff8105f340>] ? wake_up_atomic_t+0x30/0x30
[ 360.180716] [<ffffffffa00bb8d5>] ? i801_access+0x285/0xaa0 [i2c_i801]
[ 360.180789] [<ffffffff8125bb8a>] ? number.isra.1+0x31a/0x350
[ 360.180862] [<ffffffff8115c83b>] ? ep_poll_callback+0x10b/0x160
[ 360.180934] [<ffffffffa0026103>] ? i2c_smbus_xfer+0xc3/0x160 [i2c_core]
[ 360.181008] [<ffffffffa0026283>] ? i2c_default_probe+0xe3/0x130 [i2c_core]
[ 360.181081] [<ffffffff8131c372>] ? device_for_each_child+0x52/0x60
[ 360.181154] [<ffffffffa00279db>] ? i2c_do_add_adapter+0x1ab/0x290 [i2c_core]
[ 360.181229] [<ffffffff81255a1a>] ? kobject_uevent_env+0x10a/0x4c0
[ 360.181302] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 360.181389] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 360.181461] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 360.181549] [<ffffffffa00258e8>] ? i2c_for_each_dev+0x28/0x40 [i2c_core]
[ 360.181623] [<ffffffffa00269d9>] ? i2c_register_driver+0x59/0xa0 [i2c_core]
[ 360.181696] [<ffffffffa0005000>] ? 0xffffffffa0004fff
[ 360.181765] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 360.181837] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 360.181907] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 360.181978] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 360.182049] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 480.180015] INFO: task modprobe:267 blocked for more than 120 seconds.
[ 480.180094] Not tainted 3.12.0-rc2 #2
[ 480.180161] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.181816] modprobe D ffff88003cec83e0 0 267 1 0x00000006
[ 480.181979] ffff88003cec80c0 0000000000000086 0000000000012dc0 ffff88003baf1fd8
[ 480.182242] 0000000000012dc0 ffff88003baf1fd8 ffffffffa0029340 ffff88003baf1a48
[ 480.182506] ffffffffa0029344 ffff88003cec80c0 00000000ffffffff ffffffffa0029348
[ 480.182770] Call Trace:
[ 480.182851] [<ffffffff8147d750>] ? schedule_preempt_disabled+0x20/0x60
[ 480.182924] [<ffffffff8147bac3>] ? __mutex_lock_slowpath+0x133/0x1b0
[ 480.183001] [<ffffffffa0027750>] ? i2c_register_adapter+0x390/0x390 [i2c_core]
[ 480.183087] [<ffffffff8147bb56>] ? mutex_lock+0x16/0x30
[ 480.183159] [<ffffffffa0027761>] ? i2c_add_adapter+0x11/0x60 [i2c_core]
[ 480.183232] [<ffffffffa001b39f>] ? __i2c_bit_add_bus+0x1af/0x360 [i2c_algo_bit]
[ 480.183371] [<ffffffffa027f614>] ? radeon_i2c_create+0x194/0x2a0 [radeon]
[ 480.183466] [<ffffffffa0263232>] ? radeon_combios_i2c_init+0xb2/0x4e0 [radeon]
[ 480.183578] [<ffffffffa027c4b8>] ? radeon_modeset_init+0x1a8/0x990 [radeon]
[ 480.183671] [<ffffffffa025624c>] ? radeon_debugfs_add_files+0xac/0x100 [radeon]
[ 480.183779] [<ffffffffa02576a0>] ? radeon_driver_load_kms+0xe0/0x160 [radeon]
[ 480.183873] [<ffffffffa019146c>] ? drm_get_pci_dev+0x11c/0x2d0 [drm]
[ 480.183947] [<ffffffff812817c8>] ? pci_device_probe+0x78/0xc0
[ 480.184030] [<ffffffff81320448>] ? driver_probe_device+0x68/0x220
[ 480.184107] [<ffffffff813206bb>] ? __driver_attach+0x7b/0x80
[ 480.184180] [<ffffffff81320640>] ? __device_attach+0x40/0x40
[ 480.184254] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 480.184326] [<ffffffff8131fbb8>] ? bus_add_driver+0x1e8/0x290
[ 480.184397] [<ffffffff81320c46>] ? driver_register+0x56/0xd0
[ 480.184470] [<ffffffffa0384000>] ? 0xffffffffa0383fff
[ 480.184541] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 480.184614] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 480.184685] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 480.184755] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 480.184826] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 480.184898] INFO: task modprobe:283 blocked for more than 120 seconds.
[ 480.184969] Not tainted 3.12.0-rc2 #2
[ 480.185035] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.185121] modprobe D ffff88003daada90 0 283 1 0x00000004
[ 480.185282] ffff88003daad770 0000000000000086 0000000000012dc0 ffff88003d73bfd8
[ 480.185546] 0000000000012dc0 ffff88003d73bfd8 ffff88003ccb0c00 0000000000000000
[ 480.185809] ffff88003ccb0f90 ffff88003ccb0f70 ffff88003ccb0f80 0000000000000000
[ 480.186073] Call Trace:
[ 480.186139] [<ffffffffa00bb5cd>] ? i801_transaction+0x9d/0x120 [i2c_i801]
[ 480.186213] [<ffffffff8105f340>] ? wake_up_atomic_t+0x30/0x30
[ 480.186284] [<ffffffffa00bb8d5>] ? i801_access+0x285/0xaa0 [i2c_i801]
[ 480.186357] [<ffffffff8125bb8a>] ? number.isra.1+0x31a/0x350
[ 480.186430] [<ffffffff8115c83b>] ? ep_poll_callback+0x10b/0x160
[ 480.186502] [<ffffffffa0026103>] ? i2c_smbus_xfer+0xc3/0x160 [i2c_core]
[ 480.186576] [<ffffffffa0026283>] ? i2c_default_probe+0xe3/0x130 [i2c_core]
[ 480.186649] [<ffffffff8131c372>] ? device_for_each_child+0x52/0x60
[ 480.186722] [<ffffffffa00279db>] ? i2c_do_add_adapter+0x1ab/0x290 [i2c_core]
[ 480.186798] [<ffffffff81255a1a>] ? kobject_uevent_env+0x10a/0x4c0
[ 480.186871] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 480.186958] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 480.187030] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 480.187118] [<ffffffffa00258e8>] ? i2c_for_each_dev+0x28/0x40 [i2c_core]
[ 480.187192] [<ffffffffa00269d9>] ? i2c_register_driver+0x59/0xa0 [i2c_core]
[ 480.187265] [<ffffffffa0005000>] ? 0xffffffffa0004fff
[ 480.187334] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 480.187406] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 480.187476] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 480.187547] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 480.187618] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 600.184009] INFO: task modprobe:267 blocked for more than 120 seconds.
[ 600.184081] Not tainted 3.12.0-rc2 #2
[ 600.184147] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.184234] modprobe D ffff88003cec83e0 0 267 1 0x00000006
[ 600.184395] ffff88003cec80c0 0000000000000086 0000000000012dc0 ffff88003baf1fd8
[ 600.184659] 0000000000012dc0 ffff88003baf1fd8 ffffffffa0029340 ffff88003baf1a48
[ 600.184922] ffffffffa0029344 ffff88003cec80c0 00000000ffffffff ffffffffa0029348
[ 600.185186] Call Trace:
[ 600.185256] [<ffffffff8147d750>] ? schedule_preempt_disabled+0x20/0x60
[ 600.185328] [<ffffffff8147bac3>] ? __mutex_lock_slowpath+0x133/0x1b0
[ 600.185402] [<ffffffffa0027750>] ? i2c_register_adapter+0x390/0x390 [i2c_core]
[ 600.185489] [<ffffffff8147bb56>] ? mutex_lock+0x16/0x30
[ 600.185560] [<ffffffffa0027761>] ? i2c_add_adapter+0x11/0x60 [i2c_core]
[ 600.185633] [<ffffffffa001b39f>] ? __i2c_bit_add_bus+0x1af/0x360 [i2c_algo_bit]
[ 600.185749] [<ffffffffa027f614>] ? radeon_i2c_create+0x194/0x2a0 [radeon]
[ 600.185844] [<ffffffffa0263232>] ? radeon_combios_i2c_init+0xb2/0x4e0 [radeon]
[ 600.185955] [<ffffffffa027c4b8>] ? radeon_modeset_init+0x1a8/0x990 [radeon]
[ 600.186047] [<ffffffffa025624c>] ? radeon_debugfs_add_files+0xac/0x100 [radeon]
[ 600.186155] [<ffffffffa02576a0>] ? radeon_driver_load_kms+0xe0/0x160 [radeon]
[ 600.186247] [<ffffffffa019146c>] ? drm_get_pci_dev+0x11c/0x2d0 [drm]
[ 600.186319] [<ffffffff812817c8>] ? pci_device_probe+0x78/0xc0
[ 600.186390] [<ffffffff81320448>] ? driver_probe_device+0x68/0x220
[ 600.186462] [<ffffffff813206bb>] ? __driver_attach+0x7b/0x80
[ 600.186532] [<ffffffff81320640>] ? __device_attach+0x40/0x40
[ 600.186602] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 600.186673] [<ffffffff8131fbb8>] ? bus_add_driver+0x1e8/0x290
[ 600.186744] [<ffffffff81320c46>] ? driver_register+0x56/0xd0
[ 600.186815] [<ffffffffa0384000>] ? 0xffffffffa0383fff
[ 600.186884] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 600.186956] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 600.187026] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 600.187096] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 600.187168] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 600.187238] INFO: task modprobe:283 blocked for more than 120 seconds.
[ 600.187309] Not tainted 3.12.0-rc2 #2
[ 600.187375] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.187461] modprobe D ffff88003daada90 0 283 1 0x00000004
[ 600.187622] ffff88003daad770 0000000000000086 0000000000012dc0 ffff88003d73bfd8
[ 600.187885] 0000000000012dc0 ffff88003d73bfd8 ffff88003ccb0c00 0000000000000000
[ 600.188158] ffff88003ccb0f90 ffff88003ccb0f70 ffff88003ccb0f80 0000000000000000
[ 600.188423] Call Trace:
[ 600.188490] [<ffffffffa00bb5cd>] ? i801_transaction+0x9d/0x120 [i2c_i801]
[ 600.188562] [<ffffffff8105f340>] ? wake_up_atomic_t+0x30/0x30
[ 600.188634] [<ffffffffa00bb8d5>] ? i801_access+0x285/0xaa0 [i2c_i801]
[ 600.188706] [<ffffffff8125bb8a>] ? number.isra.1+0x31a/0x350
[ 600.188776] [<ffffffff8115c83b>] ? ep_poll_callback+0x10b/0x160
[ 600.188849] [<ffffffffa0026103>] ? i2c_smbus_xfer+0xc3/0x160 [i2c_core]
[ 600.188922] [<ffffffffa0026283>] ? i2c_default_probe+0xe3/0x130 [i2c_core]
[ 600.188995] [<ffffffff8131c372>] ? device_for_each_child+0x52/0x60
[ 600.189068] [<ffffffffa00279db>] ? i2c_do_add_adapter+0x1ab/0x290 [i2c_core]
[ 600.189142] [<ffffffff81255a1a>] ? kobject_uevent_env+0x10a/0x4c0
[ 600.189214] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 600.189301] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 600.189374] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 600.189462] [<ffffffffa00258e8>] ? i2c_for_each_dev+0x28/0x40 [i2c_core]
[ 600.189536] [<ffffffffa00269d9>] ? i2c_register_driver+0x59/0xa0 [i2c_core]
[ 600.189608] [<ffffffffa0005000>] ? 0xffffffffa0004fff
[ 600.189678] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 600.189750] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 600.189820] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 600.189891] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 600.189961] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 629.274318] systemd-udevd[6677]: starting version 204
[ 720.188014] INFO: task modprobe:267 blocked for more than 120 seconds.
[ 720.188092] Not tainted 3.12.0-rc2 #2
[ 720.188158] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 720.188245] modprobe D ffff88003cec83e0 0 267 1 0x00000006
[ 720.188408] ffff88003cec80c0 0000000000000086 0000000000012dc0 ffff88003baf1fd8
[ 720.188672] 0000000000012dc0 ffff88003baf1fd8 ffffffffa0029340 ffff88003baf1a48
[ 720.188936] ffffffffa0029344 ffff88003cec80c0 00000000ffffffff ffffffffa0029348
[ 720.189200] Call Trace:
[ 720.189282] [<ffffffff8147d750>] ? schedule_preempt_disabled+0x20/0x60
[ 720.189354] [<ffffffff8147bac3>] ? __mutex_lock_slowpath+0x133/0x1b0
[ 720.189431] [<ffffffffa0027750>] ? i2c_register_adapter+0x390/0x390 [i2c_core]
[ 720.189518] [<ffffffff8147bb56>] ? mutex_lock+0x16/0x30
[ 720.189589] [<ffffffffa0027761>] ? i2c_add_adapter+0x11/0x60 [i2c_core]
[ 720.189663] [<ffffffffa001b39f>] ? __i2c_bit_add_bus+0x1af/0x360 [i2c_algo_bit]
[ 720.189807] [<ffffffffa027f614>] ? radeon_i2c_create+0x194/0x2a0 [radeon]
[ 720.189903] [<ffffffffa0263232>] ? radeon_combios_i2c_init+0xb2/0x4e0 [radeon]
[ 720.190015] [<ffffffffa027c4b8>] ? radeon_modeset_init+0x1a8/0x990 [radeon]
[ 720.190108] [<ffffffffa025624c>] ? radeon_debugfs_add_files+0xac/0x100 [radeon]
[ 720.190215] [<ffffffffa02576a0>] ? radeon_driver_load_kms+0xe0/0x160 [radeon]
[ 720.190311] [<ffffffffa019146c>] ? drm_get_pci_dev+0x11c/0x2d0 [drm]
[ 720.191953] [<ffffffff812817c8>] ? pci_device_probe+0x78/0xc0
[ 720.192036] [<ffffffff81320448>] ? driver_probe_device+0x68/0x220
[ 720.192113] [<ffffffff813206bb>] ? __driver_attach+0x7b/0x80
[ 720.192187] [<ffffffff81320640>] ? __device_attach+0x40/0x40
[ 720.192260] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 720.192333] [<ffffffff8131fbb8>] ? bus_add_driver+0x1e8/0x290
[ 720.192404] [<ffffffff81320c46>] ? driver_register+0x56/0xd0
[ 720.192478] [<ffffffffa0384000>] ? 0xffffffffa0383fff
[ 720.192548] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 720.192622] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 720.192692] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 720.192763] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 720.192834] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 720.192906] INFO: task modprobe:283 blocked for more than 120 seconds.
[ 720.192977] Not tainted 3.12.0-rc2 #2
[ 720.193043] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 720.193129] modprobe D ffff88003daada90 0 283 1 0x00000004
[ 720.193291] ffff88003daad770 0000000000000086 0000000000012dc0 ffff88003d73bfd8
[ 720.193554] 0000000000012dc0 ffff88003d73bfd8 ffff88003ccb0c00 0000000000000000
[ 720.193818] ffff88003ccb0f90 ffff88003ccb0f70 ffff88003ccb0f80 0000000000000000
[ 720.194081] Call Trace:
[ 720.194148] [<ffffffffa00bb5cd>] ? i801_transaction+0x9d/0x120 [i2c_i801]
[ 720.194221] [<ffffffff8105f340>] ? wake_up_atomic_t+0x30/0x30
[ 720.194293] [<ffffffffa00bb8d5>] ? i801_access+0x285/0xaa0 [i2c_i801]
[ 720.194366] [<ffffffff8125bb8a>] ? number.isra.1+0x31a/0x350
[ 720.194439] [<ffffffff8115c83b>] ? ep_poll_callback+0x10b/0x160
[ 720.194511] [<ffffffffa0026103>] ? i2c_smbus_xfer+0xc3/0x160 [i2c_core]
[ 720.194585] [<ffffffffa0026283>] ? i2c_default_probe+0xe3/0x130 [i2c_core]
[ 720.194658] [<ffffffff8131c372>] ? device_for_each_child+0x52/0x60
[ 720.194731] [<ffffffffa00279db>] ? i2c_do_add_adapter+0x1ab/0x290 [i2c_core]
[ 720.194806] [<ffffffff81255a1a>] ? kobject_uevent_env+0x10a/0x4c0
[ 720.194879] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 720.194966] [<ffffffff8131e6c3>] ? bus_for_each_dev+0x53/0x90
[ 720.195038] [<ffffffffa0027ad0>] ? __process_new_adapter+0x10/0x10 [i2c_core]
[ 720.195126] [<ffffffffa00258e8>] ? i2c_for_each_dev+0x28/0x40 [i2c_core]
[ 720.195200] [<ffffffffa00269d9>] ? i2c_register_driver+0x59/0xa0 [i2c_core]
[ 720.195273] [<ffffffffa0005000>] ? 0xffffffffa0004fff
[ 720.195342] [<ffffffff810002d2>] ? do_one_initcall+0x102/0x150
[ 720.195414] [<ffffffff8109d304>] ? load_module+0x1b64/0x2310
[ 720.195485] [<ffffffff8109a160>] ? m_show+0x1c0/0x1c0
[ 720.195555] [<ffffffff8109db41>] ? SyS_init_module+0x91/0xc0
[ 720.195626] [<ffffffff8147f062>] ? system_call_fastpath+0x16/0x1b
[ 790.695879] i2c /dev entries driver
--
Meelis Roos (mroos@...ux.ee)
--
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