[CRIU] [PATCH] zdtm: use tkill instead of kill in sigaltstack

[Cyrill Gorcunov]

On Fri, Jul 12, 2013 at 01:09:07AM +0400, Andrey Vagin wrote:
> Each signals should be sent to a proper thread..
> 
> Probably it was a reason of a error, which was caught yesterday
> + cat zdtm/live/static/sigaltstack.out
> 20:57:10.933:  4380:        thread in sas: at 0x6083e0 (size   0x2000 flags 0x1)
> 20:57:10.934:  4380: Waiting in thread SAS
> 20:57:11.219:  4380: Thread may leave SAS
> 20:57:11.219:  4380: Leaving thread SAS
> 20:57:11.219:  4380:        leader in sas: at 0x6083e0 (size   0x2000 flags 0x1)
> 20:57:11.219:  4380:             main old: at 0x6063e0 (size   0x2000 flags 0x1)
> 20:57:11.220:  4380:             main new: at 0x6083e0 (size   0x2000 flags 0x1)
> 20:57:11.220:  4380:             thrd old: at 0x6083e0 (size   0x2000 flags 0x1)
> 20:57:11.220:  4380:             thrd new: at 0x6083e0 (size   0x2000 flags 0x1)
> 20:57:11.220:  4380: FAIL: sigaltstack.c:163: sas not restored (errno = 11 (Resource temporarily unavailable))
> 
> Cc: Cyrill Gorcunov <gorcunov at openvz.org>
> Signed-off-by: Andrey Vagin <avagin at openvz.org>

Acked-by: Cyrill Gorcunov <gorcunov at openvz.org>

Thanks a lot, Andrew!!!