On Tue, Jun 21, 2016 at 02:12:54PM +0200, Christian Gmeiner wrote:

> [ 240.246067] INFO: task hexdump:1660 blocked for more than 120 seconds.
> [ 240.246089] Not tainted 4.1.17 0000001
> [ 240.246099] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Please think hard before including complete backtraces in upstream
reports, they are very large and contain almost no useful information
relative to their size so often obscure the relevant content in your
message. If part of the backtrace is usefully illustrative then it's
usually better to pull out the relevant sections.