fanotify: Taint on use of FANOTIFY_ACCESS_PERMISSIONS
authorBen Hutchings <ben@decadent.org.uk>
Wed, 13 Jul 2016 00:37:22 +0000 (01:37 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 4 Jan 2017 19:39:36 +0000 (19:39 +0000)
commitd1d42e22f5dbdb42d04bdace7a04c8b0ec85e098
treed0d265bbb6358d7709d9bf20bff84a75301cb86f
parent976222c06768cad304165a80aef4e728974b0ca2
fanotify: Taint on use of FANOTIFY_ACCESS_PERMISSIONS

Various free and proprietary AV products use this feature and users
apparently want it.  But punting access checks to userland seems like
an easy way to deadlock the system, and there will be nothing we can
do about that.  So warn and taint the kernel if this feature is
actually used.

Gbp-Pq: Topic debian
Gbp-Pq: Name fanotify-taint-on-use-of-fanotify_access_permissions.patch
fs/notify/fanotify/fanotify_user.c