Created attachment 915735 [details] Comment (This comment was longer than 65,535 characters and has been moved to an attachment by Red Hat Bugzilla).
Created attachment 773473 [details] File: dmesg
still happening in kernel-3.11.0-0.rc1.git1.1.fc20.x86_64
kernel-3.11.0-0.rc1.git4.1.fc20.x86_64 same behavior... load average ~2 without any specific reason...
The edac driver is only spitting out a warning and is not the cause of this issue. Your real problem is [ 241.829044] INFO: task modprobe:527 blocked for more than 120 seconds. [ 241.829050] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 241.829054] modprobe D ffff880208460000 5496 527 526 0x00000080 [ 241.829063] ffff8802088a1ba8 0000000000000046 00000000001d5340 ffff8802088a1fd8 [ 241.829070] ffff8802088a1fd8 00000000001d5340 ffff8802321ecdc0 ffff8802321ecdc0 [ 241.829077] ffffffff81d0bfe0 ffffffff81d0bfe8 ffffffff00000000 ffffffff81d0c030 [ 241.829084] Call Trace: [ 241.829095] [<ffffffff81738f19>] schedule+0x29/0x70 [ 241.829101] [<ffffffff8173a9dd>] rwsem_down_write_failed+0xed/0x1a0 [ 241.829110] [<ffffffff8137e6e3>] call_rwsem_down_write_failed+0x13/0x20 [ 241.829116] [<ffffffff8162f0a5>] ? genl_lock_all+0x15/0x30 [ 241.829121] [<ffffffff817381dd>] ? down_write+0x9d/0xb2 [ 241.829126] [<ffffffff8162f0a5>] ? genl_lock_all+0x15/0x30 [ 241.829131] [<ffffffff8162f0a5>] genl_lock_all+0x15/0x30 [ 241.829135] [<ffffffff816301b3>] genl_register_family+0x53/0x1f0 [ 241.829143] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 241.829148] [<ffffffff81630c50>] genl_register_family_with_ops+0x20/0x80 [ 241.829154] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 241.829183] [<ffffffffa0269ec4>] nl80211_init+0x24/0xf0 [cfg80211] [ 241.829189] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 241.829208] [<ffffffffa02c6043>] cfg80211_init+0x43/0xdb [cfg80211] [ 241.829214] [<ffffffff810020fa>] do_one_initcall+0xfa/0x1b0 [ 241.829221] [<ffffffff8105cb93>] ? set_memory_nx+0x43/0x50 [ 241.829230] [<ffffffff810fa2bf>] load_module+0x1c6f/0x27f0 [ 241.829235] [<ffffffff810f59a0>] ? store_uevent+0x40/0x40 [ 241.829243] [<ffffffff810fafd6>] SyS_finit_module+0x86/0xb0 [ 241.829249] [<ffffffff81745759>] system_call_fastpath+0x16/0x1b [ 241.829253] INFO: lockdep is turned off. [ 361.829047] INFO: task modprobe:527 blocked for more than 120 seconds. [ 361.829053] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 361.829057] modprobe D ffff880208460000 5496 527 526 0x00000080 [ 361.829066] ffff8802088a1ba8 0000000000000046 00000000001d5340 ffff8802088a1fd8 [ 361.829073] ffff8802088a1fd8 00000000001d5340 ffff8802321ecdc0 ffff8802321ecdc0 [ 361.829079] ffffffff81d0bfe0 ffffffff81d0bfe8 ffffffff00000000 ffffffff81d0c030 [ 361.829086] Call Trace: [ 361.829097] [<ffffffff81738f19>] schedule+0x29/0x70 [ 361.829103] [<ffffffff8173a9dd>] rwsem_down_write_failed+0xed/0x1a0 [ 361.829113] [<ffffffff8137e6e3>] call_rwsem_down_write_failed+0x13/0x20 [ 361.829119] [<ffffffff8162f0a5>] ? genl_lock_all+0x15/0x30 [ 361.829124] [<ffffffff817381dd>] ? down_write+0x9d/0xb2 [ 361.829128] [<ffffffff8162f0a5>] ? genl_lock_all+0x15/0x30 [ 361.829133] [<ffffffff8162f0a5>] genl_lock_all+0x15/0x30 [ 361.829138] [<ffffffff816301b3>] genl_register_family+0x53/0x1f0 [ 361.829148] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 361.829152] [<ffffffff81630c50>] genl_register_family_with_ops+0x20/0x80 [ 361.829158] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 361.829188] [<ffffffffa0269ec4>] nl80211_init+0x24/0xf0 [cfg80211] [ 361.829194] [<ffffffffa02c6000>] ? 0xffffffffa02c5fff [ 361.829213] [<ffffffffa02c6043>] cfg80211_init+0x43/0xdb [cfg80211] [ 361.829219] [<ffffffff810020fa>] do_one_initcall+0xfa/0x1b0 [ 361.829226] [<ffffffff8105cb93>] ? set_memory_nx+0x43/0x50 [ 361.829233] [<ffffffff810fa2bf>] load_module+0x1c6f/0x27f0 [ 361.829238] [<ffffffff810f59a0>] ? store_uevent+0x40/0x40 [ 361.829246] [<ffffffff810fafd6>] SyS_finit_module+0x86/0xb0 [ 361.829253] [<ffffffff81745759>] system_call_fastpath+0x16/0x1b [ 361.829256] INFO: lockdep is turned off. ie) something on this system (possibly the cfg80211 driver) is causing the system to hang for a long time. Adding linville for wireless info ... P.
Please update the kernel, this hang is already fixed on v3.11-rc4 and later kernels by c74f2b2678f40b80265dd53556f1f778c8e1823f "genetlink: release cb_lock before requesting additional module".