rcub1 task hung for > 180 seconds.
This is same 3.0-rc7 system that had the lockdep splat I just posted...
Is this task blockage serious?
INFO: task rcub1:11 blocked for more than 180 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
rcub1 D ffff880128f6b6c8 0 11 2 0x00000000
ffff880128f73cd0 0000000000000046 ffff880100000000 0000000000012940 ffff880128f6b3f0 ffff880128f73fd8 ffff880128f72000 0000000000012940 ffff880128f73fd8 0000000000012940 ffff8801079e9150 ffff880128f6b3f0
Call Trace: [<ffffffff81481f0d>] ? sub_preempt_count+0x92/0xa6 [<ffffffff8147e1d1>] __rt_mutex_slowlock+0x84/0xb6 [<ffffffff8147e3c9>] rt_mutex_slowlock+0xc5/0x132 [<ffffffff8147e4d4>] rt_mutex_lock+0x46/0x4a [<ffffffff810a6bed>] rcu_boost_kthread+0x125/0x169 [<ffffffff810a6ac8>] ? rcu_initiate_boost+0x8a/0x8a [<ffffffff81066f80>] kthread+0x7d/0x85 [<ffffffff81486164>] kernel_thread_helper+0x4/0x10 [<ffffffff8147f358>] ? retint_restore_args+0x13/0x13 [<ffffffff81066f03>] ? __init_kthread_worker+0x56/0x56 [<ffffffff81486160>] ? gs_change+0x13/0x13 INFO: lockdep is turned off. INFO: task rcub1:11 blocked for more than 180 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
rcub1 D ffff880128f6b6c8 0 11 2 0x00000000
ffff880128f73cd0 0000000000000046 ffff880100000000 0000000000012940 ffff880128f6b3f0 ffff880128f73fd8 ffff880128f72000 0000000000012940 ffff880128f73fd8 0000000000012940 ffff8801079e9150 ffff880128f6b3f0
Call Trace: [<ffffffff81481f0d>] ? sub_preempt_count+0x92/0xa6 [<ffffffff8147e1d1>] __rt_mutex_slowlock+0x84/0xb6 [<ffffffff8147e3c9>] rt_mutex_slowlock+0xc5/0x132 [<ffffffff8147e4d4>] rt_mutex_lock+0x46/0x4a [<ffffffff810a6bed>] rcu_boost_kthread+0x125/0x169 [<ffffffff810a6ac8>] ? rcu_initiate_boost+0x8a/0x8a [<ffffffff81066f80>] kthread+0x7d/0x85 [<ffffffff81486164>] kernel_thread_helper+0x4/0x10 [<ffffffff8147f358>] ? retint_restore_args+0x13/0x13 [<ffffffff81066f03>] ? __init_kthread_worker+0x56/0x56 [<ffffffff81486160>] ? gs_change+0x13/0x13
INFO: lockdep is turned off.
Thanks,
Ben
Signature · 2 lines
Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com