Greg Kroah-Hartman

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Greg Kroah-Hartman
Greg Kroah-Hartman at SUSE Offices in Nuremberg, Germany, in September 2011
Other namesGreg KH
EmployerLinux Foundation[1]

Greg Kroah-Hartman is a major Linux kernel developer. As of April 2013, he is the Linux kernel maintainer for the -stable branch,[2] the staging subsystem,[2] USB,[2] driver core, debugfs, kref, kobject, and the sysfs kernel subsystems,[2] Userspace I/O (with Hans J. Koch),[2] and TTY layer.[2] He also created linux-hotplug, the udev project, and the Linux Driver Project.[3] He worked for Novell in the SUSE Labs division and, as of 1 February 2012, works at the Linux Foundation.[1][4]


Kroah-Hartman is a co-author of Linux Device Drivers (3rd Edition)[5] and author of Linux Kernel in a Nutshell,[6] and used to be a contributing editor for Linux Journal. He also contributes articles to, the Linux news site.

Kroah-Hartman frequently helps in the documentation of the kernel and driver development through talks[7][8] and tutorials.[9][10] In 2006, he released a CD image of material to introduce a programmer to working on Linux device driver development.[11]

He also initiated the development of openSUSE Tumbleweed, the rolling release model edition of openSUSE.[12][13]

In April 2021, Kroah-Hartman announced the decision to ban the University of Minnesota from contributing to the Linux kernel and to revert all prior patches from the university after researchers intentionally inserted bugs in an unauthorised penetration test.[14][15]


  • Jonathan Corbet; Alessandro Rubini; Greg Kroah-Hartman (2005). Linux Device Drivers (3rd ed.). Sebastopol, CA: O'Reilly. ISBN 0-596-00590-3.
  • Kroah-Hartman, Greg (2006). Linux Kernel in a Nutshell (1st ed.). Sebastopol, CA: O'Reilly. ISBN 978-0-596-10079-7.


  1. ^ a b "Leading Kernel Maintainer Greg Kroah-Hartman Joins The Linux Foundation". Linux Foundation. 31 January 2012. Archived from the original on 2019-08-10. Retrieved 2012-02-02.
  2. ^ a b c d e f "Linux kernel Maintainers file". Archived from the original on 2013-01-13. Retrieved 2013-04-14.
  3. ^ Greg Kroah-Hartman (2007-09-27). "Linux Driver Project Kickoff". Archived from the original on 2018-04-04. Retrieved 2009-06-20.
  4. ^ KH, Greg (2012-02-20). "What Greg Does". Archived from the original on 2018-03-24. Retrieved 2013-04-14.
  5. ^ "O'reilly: Linux Device Drivers, Third Edition". Archived from the original on 2014-12-24. Retrieved 2014-12-21.
  6. ^ "O'reilly: Linux Kernel in a Nutshell". Archived from the original on 2011-08-24. Retrieved 2009-06-20.
  7. ^ Greg Kroah-Hartman (2006-07-23). "Linux Symposium: Keynote by Greg Kroah-Hartman, myths, lies, and truths about Linux kernel development". Archived from the original on 2018-10-16. Retrieved 2009-06-20.
  8. ^ "O'reilly Net: Current State of the Linux Kernel". Archived from the original on 2009-07-10. Retrieved 2009-06-20.
  9. ^ "O'Reilly Net: Write A Real, Working Linux Driver". Archived from the original on 2009-07-10. Retrieved 2009-06-20.
  10. ^ "Linux Symposium: Write a real, working Linux driver tutorial" (PDF). Archived (PDF) from the original on 2016-11-07. Retrieved 2013-03-05.
  11. ^ "Linux DDK". 2006-05-24. Archived from the original on 2017-11-09. Retrieved 2012-04-05.
  12. ^ Bhartiya, S (13 May 2016). "Greg KH: Update to Linux Kernel 4.6 for New Security Features". Archived from the original on 22 August 2018. Retrieved 22 August 2018.
  13. ^ "Portal:Tumbleweed – openSUSE". 6 June 2018. Archived from the original on 11 April 2022. Retrieved 22 August 2018.
  14. ^ "University Banned From Contributing To Linux Kernel For Intentionally Inserting Bugs". Phoronix. Archived from the original on 2021-10-22. Retrieved 2021-04-21.
  15. ^ Sen, Sayan. "Linux bans University of Minnesota for sending buggy patches in the name of research". Neowin. Archived from the original on 2023-08-11. Retrieved 2021-04-21.

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