This bug is missing log files that will aid in diagnosing the problem. >From a terminal window please run:
apport-collect 1274479 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: trusty -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1274479 Title: Call Traces found while executing fsracer tests Status in “linux” package in Ubuntu: Incomplete Bug description: Host machine : 9.3.189.114(roo/.pasroot) run "virsh console harini" to get the console access Description: ----------------- fs racer test from ltp test suite was being run on ubuntu alpha 1 guest. After couple of hours of testing got some errors on the command prompt along with call trace in dmesg. Location for fsracer test : /root/ltp- full-20140115/testcases/kernel/fs/racer/ Ran : nohup /root/ltp-full-20140115/testcases/kernel/fs/racer/fs_racer.sh -t 10000000 & ========================================================================================= On command prompt: --------------------------------- root@ubuntu:~# [88680.412397] INFO: task ln:16792 blocked for more than 120 seconds. [88680.412527] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.412595] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.412992] INFO: task mkdir:16801 blocked for more than 120 seconds. [88680.413079] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.413145] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.413290] INFO: task dd:17882 blocked for more than 120 seconds. [88680.413401] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.413468] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.413625] INFO: task fs_racer_file_c:29630 blocked for more than 120 seconds. [88680.413726] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.413793] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.414025] INFO: task fs_racer_file_c:29631 blocked for more than 120 seconds. [88680.414127] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.414196] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.414341] INFO: task ln:29635 blocked for more than 120 seconds. [88680.414425] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.414491] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.414632] INFO: task ln:29637 blocked for more than 120 seconds. [88680.414715] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.414782] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.415139] INFO: task fs_racer_file_c:29641 blocked for more than 120 seconds. [88680.415243] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.415311] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.415456] INFO: task mkdir:29646 blocked for more than 120 seconds. [88680.415539] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.415605] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.415748] INFO: task mkdir:29647 blocked for more than 120 seconds. [88680.415835] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.415983] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. ============================================================================== Call trace: ------------- [88680.412397] INFO: task ln:16792 blocked for more than 120 seconds. [88680.412527] Not tainted 3.13.0-5-generic #20-Ubuntu [88680.412595] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88680.412696] ln D 00003fff9b89ea68 0 16792 25258 0x00040000 [88680.412703] Call Trace: [88680.412732] [c000000c76ad74b0] [c000000c765eeae0] 0xc000000c765eeae0 (unreliable) [88680.412852] [c000000c76ad7680] [c0000000000154c0] .__switch_to+0x1d0/0x340 [88680.412917] [c000000c76ad7730] [c000000000abd968] .__schedule+0x368/0x8c0 [88680.412922] [c000000c76ad79b0] [c000000000abe498] .schedule_preempt_disabled+0x18/0x30 [88680.412926] [c000000c76ad7a20] [c000000000ac078c] .__mutex_lock_slowpath+0x18c/0x2c0 [88680.412930] [c000000c76ad7af0] [c000000000ac0924] .mutex_lock+0x64/0x68 [88680.412975] [c000000c76ad7b70] [c0000000002303e0] .kern_path_create+0xb0/0x1e0 [88680.412979] [c000000c76ad7cd0] [c000000000232a48] .user_path_create+0x68/0xa0 [88680.412983] [c000000c76ad7d60] [c000000000233c88] .SyS_symlinkat+0x78/0x140 [88680.412989] [c000000c76ad7e30] [c000000000009e58] syscall_exit+0x0/0x98 =================================================================================== File system status at that moment -------------------------------------- root@ubuntu:~# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda 50G 18G 29G 39% / none 4.0K 0 4.0K 0% /sys/fs/cgroup devtmpfs 25G 8.0K 25G 1% /dev none 5.0G 216K 5.0G 1% /run none 5.0M 0 5.0M 0% /run/lock none 25G 0 25G 0% /run/shm none 100M 0 100M 0% /run/user root@ubuntu:~# root@ubuntu:~# uname -a Linux ubuntu 3.13.0-5-generic #20-Ubuntu SMP Mon Jan 20 20:03:57 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux root@ubuntu:~# To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1274479/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp