Al Viro 8f94a9388a fix cgroup_do_mount() handling of failure exits ... commit 399504e21a upstream. same story as with last May fixes in sysfs (7b745a4e40 "unfuck sysfs_mount()"); new_sb is left uninitialized in case of early errors in kernfs_mount_ns() and papering over it by treating any error from kernfs_mount_ns() as equivalent to !new_ns ends up conflating the cases when objects had never been transferred to a superblock with ones when that has happened and resulting new superblock had been dropped. Easily fixed (same way as in sysfs case). Additionally, there's a superblock leak on kernfs_node_dentry() failure *and* a dentry leak inside kernfs_node_dentry() itself - the latter on probably impossible errors, but the former not impossible to trigger (as the matter of fact, injecting allocation failures at that point *does* trigger it). Cc: stable@kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-03-23 14:35:18 +01:00
..
dir.c	kernfs: introduce kernfs_node_id	2017-07-29 09:00:03 -06:00
file.c	kernfs: fix regression in kernfs_fop_write caused by wrong type	2018-02-16 20:22:59 +01:00
inode.c	kernfs: introduce kernfs_node_id	2017-07-29 09:00:03 -06:00
Kconfig	kernfs: add CONFIG_KERNFS	2014-02-07 16:08:57 -08:00
kernfs-internal.h	kernfs: don't set dentry->d_fsdata	2017-07-29 09:00:03 -06:00
Makefile	sysfs, kernfs: add skeletons for kernfs	2013-11-27 13:28:24 -08:00
mount.c	fix cgroup_do_mount() handling of failure exits	2019-03-23 14:35:18 +01:00
symlink.c	kernfs: Replace strncpy with memcpy	2018-12-08 13:03:35 +01:00