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>
Tue, 2 May 2017 15:21:44 +0000 (15:21 +0000)
commitb73cc47ff34fa659b17ae7373ebc61ef304a62ac
tree259778a3f982a21165527a005c227a5dc51c3d66
parentb7423f9638a114af7fcc5957390655d814ea3557
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