[CRIU] zdtm failure on latest criu-dev (Unable to lseek(SEEK_DATA))

[Andrei Vagin]

On Wed, Nov 16, 2016 at 11:51 AM, Adrian Reber <adrian at lisas.de> wrote:
> On Wed, Nov 16, 2016 at 10:47:42AM -0800, Andrei Vagin wrote:
>> On Wed, Nov 16, 2016 at 06:22:44PM +0100, Adrian Reber wrote:
>> > Current criu-dev checkout zdtm fails with:
>> >
>> > ======================== Run zdtm/static/pthread00 in h ========================
>> > Start test
>> > ./pthread00 --pidfile=pthread00.pid --outfile=pthread00.out
>> > Run criu dump
>> > =[log]=> dump/zdtm/static/pthread00/30/1/dump.log
>> > ------------------------ grep Error ------------------------
>> > (00.012899) Error (criu/shmem.c:646): Unable to lseek(SEEK_DATA): Invalid argument
>>
>> What kernl do you use?
>
> The latest RHEL7 kernel: 3.10.0-514.el7.x86_64
>
> Just two weeks ago all tests except static/sched_policy00 would work,
> now I have to exclude at least
>
> -x zdtm/static/pthread00 -x zdtm/static/pthread01 -x zdtm/static/maps01
> -x zdtm/static/maps00 -x zdtm/transition/maps008 -x zdtm/transition/shmem
>
> Replacing the kernel with a newer version let's those tests pass.


SEEK_DATA is broken in RHEL.

You need to backport this patch too:
commit 387aae6fdd737038e92d7bb40712bdf6dcb11945
Author: Hugh Dickins <hughd at google.com>
Date:   Sun Aug 4 11:30:25 2013 -0700

    tmpfs: fix SEEK_DATA/SEEK_HOLE regression

    Commit 46a1c2c7ae53 ("vfs: export lseek_execute() to modules") broke the
    tmpfs SEEK_DATA/SEEK_HOLE implementation, because vfs_setpos() converts
    the carefully prepared -ENXIO to -EINVAL.  Other filesystems avoid it in
    error cases: do the same in tmpfs.

    Signed-off-by: Hugh Dickins <hughd at google.com>
    Cc: Jie Liu <jeff.liu at oracle.com>
    Cc: Al Viro <viro at zeniv.linux.org.uk>
    Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>

>
>> > (00.012968) Error (criu/cr-dump.c:1635): Dumping FAILED.
>> > ------------------------ ERROR OVER ------------------------
>> > ################# Test zdtm/static/pthread00 FAIL at CRIU dump #################
>> > Send the 9 signal to  30
>> > Wait for zdtm/static/pthread00(30) to die for 0.100000
>> > ##################################### FAIL #####################################
>> >
>> >             Adrian
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