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, 19 Jun 2019 22:16:58 +0000 (23:16 +0100)
commit8298769bf2380c62fa82a91eea30e3ef97c3ebe4
tree47f2b8bbf8a28776698b5bfea089fdd1b094ec77
parent76ed3e9b78c4aaacc884665a1d96f7d1b5cb8f23
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