tree d3ec41b880dea0ec3f63e8b0f41f8ebe26644345
parent 56b68571e0a9089baba3aba0c38ea31bd0769a0b
author David Howells <dhowells@redhat.com> 1541114511 +0000
committer David Howells <dhowells@redhat.com> 1541114511 +0000

vfs: Fix incorrect user_ns assignment in proc and mqueue

The user namespace set on a proc superblock should derive from the pid_ns
that the superblock is associated with and, similarly, an mqueue superblock
should derive from the ipc_ns that that is associated with.

Fix both of these to set the proposed user_ns appropriately in the
respective get_tree() functions.

Fixes: a593f22857a3 ("proc: Add fs_context support to procfs")
Fixes: ec772aa43dc7 ("ipc: Convert mqueue fs to fs_context")
Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Alexey Dobriyan <adobriyan@gmail.com>