Description: local DoS due to a page lock order bug in the XFS seek hole/data implementation
References:
Notes:
 carnil> possibly introduced by fc0561cefc04e7803c0f6501ca4f310a502f65b8
 carnil> but needs to be verified.
 carnil> Cf. http://www.openwall.com/lists/oss-security/2016/10/13/8
 carnil> https://bugzilla.novell.com/show_bug.cgi?id=1004532#c10
 jmm> Not a security bug per Dave Chinner at https://marc.info/?l=linux-fsdevel&m=147639177409294&w=2
Bugs:
upstream: ignored "not a security bug"
4.19-upstream-stable: ignored "not a security bug"
4.9-upstream-stable: ignored "not a security bug"
3.16-upstream-stable: N/A "Vulnerable code introduced in (4.4-rc1) [fc0561cefc04e7803c0f6501ca4f310a502f65b8]"
3.2-upstream-stable: N/A "Vulnerable code introduced in (4.4-rc1) [fc0561cefc04e7803c0f6501ca4f310a502f65b8]"
sid: ignored "not a security bug"
4.19-buster-security: ignored "not a security bug"
4.9-stretch-security: ignored "not a security bug"
3.16-jessie-security: N/A "Vulnerable code not present"
3.2-wheezy-security: N/A "Vulnerable code not present"