Re: How to send a break? - dump from frozen 64bit linux

[Valdis.Kletnieks@vt.edu]

On Tue, 30 May 2006 12:22:01 +0200, Janos Haar said:

> http://download.netcenter.hu/bughunt/20060530/dump.txt  (The frozen system,
> 540KB)

> Can somebody tell me, whats wrong?

kblockd/1     D ffff81011f641778     0    25     19            26    24 (L-TLB)
ffff81011f641778 0000000000000000 0000000000000009 ffff81011f735358 
       ffff81011f735140 ffff81011fc79100 000014a00f9a0ef2 00000000000410dd 
       0000000102866d40 ffff810003900280 
Call Trace: <ffffffff8026d72a>{xfs_qm_shake+135} <ffffffff804e6046>{__mutex_lock_slowpath+424}
       <ffffffff804e62e4>{mutex_lock+41} <ffffffff8026d72a>{xfs_qm_shake+135}
       <ffffffff80157cfd>{shrink_slab+100} <ffffffff801584d9>{try_to_free_pages+372}
       <ffffffff80153c3f>{__alloc_pages+432} <ffffffff8046aef3>{tcp_sendmsg+1373}
       <ffffffff804848ad>{inet_sendmsg+70} <ffffffff8043f619>{sock_sendmsg+270}
       <ffffffff8013d3e0>{autoremove_wake_function+0} <ffffffff80440db3>{kernel_sendmsg+61}
       <ffffffff8802c111>{:nbd:sock_xmit+273} <ffffffff8015195d>{mempool_alloc_slab+17}
       <ffffffff80169b1b>{poison_obj+39} <ffffffff8015195d>{mempool_alloc_slab+17}
       <ffffffff80169c11>{cache_alloc_debugcheck_after+235}
       <ffffffff8015195d>{mempool_alloc_slab+17} <ffffffff802da471>{as_remove_queued_request+267}
       <ffffffff8802c472>{:nbd:nbd_send_req+517} <ffffffff8802c712>{:nbd:do_nbd_request+329}
       <ffffffff802d9b45>{as_work_handler+46} <ffffffff80139d30>{run_workqueue+168}
       <ffffffff802d9b17>{as_work_handler+0} <ffffffff8013a27f>{worker_thread+0}
       <ffffffff8013a383>{worker_thread+260} <ffffffff80123fa4>{default_wake_function+0}
       <ffffffff8013a27f>{worker_thread+0} <ffffffff8013d29f>{kthread+219}
       <ffffffff8012590d>{schedule_tail+70} <ffffffff8010bba6>{child_rip+8}
       <ffffffff8013d1c4>{kthread+0} <ffffffff8010bb9e>{child_rip+0}

Half the processes on the box seem wedged at that same mutex_lock. I can't
seem to find an xfs_qm_shake in my source tree though.

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