Merge from head r292743, r293627 by dchagin:

Merge from head r292743, r293627 by dchagin:
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r292743 | dchagin | 2015-12-26 01:04:47 -0800 (сб, 26 дек. 2015) | 5 lines

Do not allow access to emuldata for non Linux processes.

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r293627 | dchagin | 2016-01-09 23:36:43 -0800 (сб, 09 янв. 2016) | 6 lines

Unlock process lock when return error from getrobustlist call and add
an forgotten dtrace probe when return the same error.

git-svn-id: svn://svn.freebsd.org/base/stable/10@293703 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f