[CRIU] crtools error: "can't splice to pipe"

[Andrew Vagin]

On Fri, May 09, 2014 at 05:28:43PM -0400, J F wrote:
> 
>         I have prepared for you a script to collect ftrace data. Could you
>         apply
>         the attached patch and execute ./test.sh PID. PID is a pid of a
>         process,
>         which should be dumped. This script sets up ftrace parameters, then
>         executes "criu dump ..." and saves ftrace data in /mnt/mydata/dump/
>         trace.log.
>         We need this file. Thank you for the help.
> 
>         >
>         > Thanks,
>         > Pavel
> 
> 
> 
> 
> Hello,
> 
> When I run sudo ./test.sh pid, it "hangs" indefinitely and I don't get a
> trace.log file created. Here is the console output when I run (this is from my
> second run):
> 
> + pid=1318
> + mkdir /tmp/debug
> mkdir: cannot create directory â/tmp/debugâ: File exists
> + mount -t debugfs debug /tmp/debug/
> mount: debug already mounted or /tmp/debug/ busy
> mount: according to mtab, debug is already mounted on /tmp/debug
> + echo 1318
> + echo function
> + echo 0
> + sudo cat /tmp/debug/tracing/trace_pipe
>

I see. I have fixed the problem. Could you apply the attached patch
instead of the previous one.