tree 1c7a8818b8ff97697458c39a0dccda7530940894
parent 9a0467e1f67155c126e5857b1d3ae2ac8b009aa5
author Al Viro <viro@zeniv.linux.org.uk> 1554919474 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1558801422 +0200

apparmorfs: fix use-after-free on symlink traversal

[ Upstream commit f51dcd0f621caac5380ce90fbbeafc32ce4517ae ]

symlink body shouldn't be freed without an RCU delay.  Switch apparmorfs
to ->destroy_inode() and use of call_rcu(); free both the inode and symlink
body in the callback.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>