From: Richard S. <rea...@gm...> - 2012-08-24 20:22:09
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Hi folks, I am seeing this message sometimes on system shutdown: INFO: task scst_usr_releas:10172 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. scst_usr_rele D ffff81002101d7a0 0 10172 87 10175 5100 (L-TLB) ffff8101265e3e00 0000000000000046 ffffffffffffffff 0000000000000000 0000000000000000 0000000000000009 ffff810112854100 ffff810107fc8080 0000410f9fa0328f 000000000000070a ffff8101128542e8 000000033be00c00 Call Trace: [<ffffffff80062ff2>] thread_return+0x62/0xfe [<ffffffff800a2c56>] keventd_create_kthread+0x0/0xc4 [<ffffffff80063c53>] __mutex_lock_slowpath+0x60/0x9b [<ffffffff8003d859>] lock_timer_base+0x1b/0x3c [<ffffffff80063c9d>] .text.lock.mutex+0xf/0x14 [<ffffffff8009ff32>] flush_workqueue+0x3f/0x87 [<ffffffff8886373a>] :scst:sgv_pool_destroy+0x6f/0x13c [<ffffffff88863aeb>] :scst:sgv_pool_del+0x56/0xa2 [<ffffffff888ba364>] :scst_user:dev_user_exit_dev+0x1c2/0x28b [<ffffffff888ba42d>] :scst_user:__dev_user_release+0x0/0x15 [<ffffffff888ba436>] :scst_user:__dev_user_release+0x9/0x15 [<ffffffff80032720>] kthread+0xfe/0x132 [<ffffffff8005dfb1>] child_rip+0xa/0x11 [<ffffffff800a2c56>] keventd_create_kthread+0x0/0xc4 [<ffffffff80032622>] kthread+0x0/0x132 [<ffffffff8005dfa7>] child_rip+0x0/0x11 I think I am shutting things down correctly. Is there a quick fix or something obvious that I am doing wrong? This is with SCST 2.1 or there abouts and Linux 2.6.18-274 (with one patch to export set_cpus_allowed_ptr) on a CentOS 4.7 base. Apart from that, things seem to work fine. -- Regards, Richard Sharpe (何以解憂?唯有杜康。--曹操) |