[CRIU] Restoring failed on ARMv7

[Artem Kuzmitskiy]

Hi all,

I checked criu on armv7 with 3.16 kernel and got next error when restoring:
....
(00.087176)   6034: task_args: 0xd6000
task_args->pid: 6034
task_args->nr_threads: 1
task_args->clone_restore_fn: 0xd1c90
task_args->thread_args: 0xd62c0
pie: Switched to the restorer 6034
pie: Error (pie/restorer.c:772): Unable to unmap (-): 1992687616
pie: Error (pie/restorer.c:1304): Restorer fail 6034
(00.087584) Error (cr-restore.c:1927): Restoring FAILED
...

Is it current criu limitation or kernel should patched?
Test performed on two versions of criu, details below.

Kernel version:
3.16 + configuration options from criu.org

Result of criu check --ms for criu
1.6(abdea652a94140269413681bfbaf3d90e5888052):

Warn  (cr-check.c:188): Skipping unssuported PR_SET_MM_MAP

Warn  (cr-check.c:592): Skipping PTRACE_O_SUSPEND_SECCOMP check

Warn  (cr-check.c:619): Dirty tracking is OFF. Memory snapshot will not
work.

Warn  (tun.c:58): Skipping tun support check

Warn  (timerfd.c:48): timerfd: Skipping timerfd support check

Warn  (cr-check.c:296): Skipping mnt_id support check

Warn  (cr-check.c:706): Skipping unsupported AIO remap

Warn  (cr-check.c:722): fdinfo doesn't contain the lock field

Looks good.

Result of criu check --ms for criu
1.7(4c5b23e52c1dc4e3fbbc7472b92e7b1ce9d22f02):

Warn  (cr-check.c:189): Skipping unssuported PR_SET_MM_MAP

Warn  (cr-check.c:588): Skipping PTRACE_O_SUSPEND_SECCOMP check

Warn  (cr-check.c:615): Dirty tracking is OFF. Memory snapshot will not
work.

Error (timerfd.c:55): timerfd: No timerfd support for c/r: Inappropriate
ioctl for device

Warn  (cr-check.c:702): Skipping unsupported AIO remap

Warn  (cr-check.c:718): fdinfo doesn't contain the lock field

Thanks andvance.

-- 
Best regards,
Artem Kuzmitskiy
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