[CRIU] Fwd: Checkpoint failure on arm64 platform

[Vijay Kilari]

On Mon, Dec 21, 2015 at 6:47 PM, Pavel Emelyanov <xemul at parallels.com> wrote:
>
>> (00.106975) Error (parasite-syscall.c:815): Can't retrieve FD from socket
>> pie: Daemon waits for command
>> (00.106999) Wait for ack 15 on daemon socket
>> (00.107036) Error (parasite-syscall.c:298): Message reply from daemon
>> is trimmed (12/0)
>> (00.107047) Error (cr-dump.c:1216): Can't get proc fd (pid: 1456)
>> (00.107066) Waiting for 1456 to trap
>> (00.107080) Daemon 1456 exited trapping
>>
>> In the kernel in readlinkat syscall, I have put printk to know the context
>> in which /proc/self is read. It shows the same process id 1456 and
>> name as 'tail'
>> which is the process running inside container.
>>
>> [ 6461.973166] In readlinkat error < 0 -9 pid 1456 name tail
>
> Heh.. Would you dig this deeper to find out where the EBADF comes from?

The parameters values received by readlink system call is wrong.
Looks like there is mismatch in the system call codes. readlink() is calling
readlinkat().

Need to debug more and confirm it.

>
>> zdtm.sh shows dump is successful where as re-store is failing with
>> clone syscall.
>> Looks like zdtm.sh is not testing /proc/self.
>>
>> ubuntu at ubuntu:~/criu/criu-1.8$ sudo ./test/zdtm.sh
>
> There can be an issue with sudo. Try to go to "fair" root with
>
> $ sudo su -
>
> then starting the zdtm.sh.
>
  outcome is same

>> ================================= CRIU CHECK =================================
>> Error (cr-check.c:634): Kernel doesn't support PTRACE_O_SUSPEND_SECCOMP
>> Error (cr-check.c:572): read: Invalid argument
>> Error (cr-check.c:826): CLONE_PARENT | CLONE_NEWPID don't work together
>> ============================= WARNING =============================
>> Not all features needed for CRIU are merged to upstream kernel yet,
>> so for now we maintain our own branch which can be cloned from:
>> git://git.kernel.org/pub/scm/linux/kernel/git/gorcunov/linux-cr.git
>> ===================================================================
>> Execute static/pipe00
>> ./pipe00 --pidfile=pipe00.pid --outfile=pipe00.out
>> Dump 5319
>> Restore
>> Test: zdtm/live/static/pipe00, Result: FAIL
>> ==================================== ERROR ====================================
>> Test: zdtm/live/static/pipe00, Namespace:
>> Dump log   : /home/ubuntu/criu/criu-1.8/test/dump/static/pipe00/5319/1/dump.log
>> --------------------------------- grep Error ---------------------------------
>> ------------------------------------- END -------------------------------------
>> Restore log: /home/ubuntu/criu/criu-1.8/test/dump/static/pipe00/5319/1/restore.log
>> --------------------------------- grep Error ---------------------------------
>> (00.012996) Error (cr-restore.c:1175): Can't fork for 5319: Invalid argument
>> (00.013053) Error (cr-restore.c:1995): Restoring FAILED.
>> ------------------------------------- END -------------------------------------
>> ================================= ERROR OVER =================================
>> ubuntu at ubuntu:~/criu/criu-1.8$ criu --version
>> Version: 1.8
>>
>>>
>>> -- Pavel
>> .
>>
>