On 27 August 2012 09:10, pants <pants@xxxxxxxxxx> wrote: > Good evening, > > I just experienced a major problem with my system while listening to a > music file in mpd from an xfs filesystem over a mdadm raid6. A kernel > error was thrown, with the following error.log entry: > > output: /var/log/error.log >> Aug 26 23:34:50 localhost kernel: [283781.061258] xhci_hcd 0000:0b:00.0: ERROR Transfer event TRB DMA ptr not part of current TD >> Aug 26 23:34:50 localhost kernel: [283781.062268] xhci_hcd 0000:0b:00.0: ERROR Transfer event TRB DMA ptr not part of current TD >> Aug 26 23:34:50 localhost kernel: [283781.063273] xhci_hcd 0000:0b:00.0: ERROR Transfer event TRB DMA ptr not part of current TD >> Aug 26 23:34:50 localhost kernel: [283781.064245] xhci_hcd 0000:0b:00.0: ERROR Transfer event TRB DMA ptr not part of current TD >> Aug 26 23:34:51 localhost kernel: [283782.058901] timeout: still 1 active urbs.. >> Aug 26 23:38:48 localhost kernel: [284019.080666] INFO: task mpd:707 blocked for more than 120 seconds. >> Aug 26 23:38:48 localhost kernel: [284019.080696] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:40:48 localhost kernel: [284139.071419] INFO: task khugepaged:32 blocked for more than 120 seconds. >> Aug 26 23:40:48 localhost kernel: [284139.071451] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:40:48 localhost kernel: [284139.071589] INFO: task mpd:525 blocked for more than 120 seconds. >> Aug 26 23:40:48 localhost kernel: [284139.071613] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:40:48 localhost kernel: [284139.071721] INFO: task mpd:707 blocked for more than 120 seconds. >> Aug 26 23:40:48 localhost kernel: [284139.071744] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:40:48 localhost kernel: [284139.071943] INFO: task mplayer:28316 blocked for more than 120 seconds. >> Aug 26 23:40:48 localhost kernel: [284139.071968] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:42:48 localhost kernel: [284259.062189] INFO: task khugepaged:32 blocked for more than 120 seconds. >> Aug 26 23:42:48 localhost kernel: [284259.062220] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:42:48 localhost kernel: [284259.062358] INFO: task mpd:525 blocked for more than 120 seconds. >> Aug 26 23:42:48 localhost kernel: [284259.062382] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:42:48 localhost kernel: [284259.062489] INFO: task mpd:702 blocked for more than 120 seconds. >> Aug 26 23:42:48 localhost kernel: [284259.062512] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:42:48 localhost kernel: [284259.062688] INFO: task mpd:703 blocked for more than 120 seconds. >> Aug 26 23:42:48 localhost kernel: [284259.062712] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> Aug 26 23:42:48 localhost kernel: [284259.062829] INFO: task mpd:704 blocked for more than 120 seconds. >> Aug 26 23:42:48 localhost kernel: [284259.062852] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > > Attempts to access other files on the same filesystem after the incident > caused the applications used to also go into interruptible sleep (see > the mplayer processes that appear later in the log). I was forced to > kill and unmount what I could, then force the system down. Afterwards, > I could replicate the error by attempting to read the file in question > at the same point > > Even if you have no solution, pointing me towards the relevant kernel > mailing list would be very helpful. > > Thanks, > > pants. It is difficult to say where the problem is in. I'd go for LKML mailing list [1] or for the Kernel Bugzilla [2] as stated in [3]. You may try XFS mailing list if you think it's XFS-only issue (ie. it doesn't happen with other filesystems). Lukas [1] https://lkml.org/ (the email address is linux-kernel@xxxxxxxxxxxxxxx) [2] https://bugzilla.kernel.org/ [3] http://www.kernel.org/doc/man-pages/reporting_code_bugs.html
