Amir Goldstein 6eaf011144 ovl: fix EIO from lookup of non-indexed upper ... Commit fbaf94ee3c ("ovl: don't set origin on broken lower hardlink") attempt to avoid the condition of non-indexed upper inode with lower hardlink as origin. If this condition is found, lookup returns EIO. The protection of commit mentioned above does not cover the case of lower that is not a hardlink when it is copied up (with either index=off/on) and then lower is hardlinked while overlay is offline. Changes to lower layer while overlayfs is offline should not result in unexpected behavior, so a permanent EIO error after creating a link in lower layer should not be considered as correct behavior. This fix replaces EIO error with success in cases where upper has origin but no index is found, or index is found that does not match upper inode. In those cases, lookup will not fail and the returned overlay inode will be hashed by upper inode instead of by lower origin inode. Fixes: 359f392ca5 ("ovl: lookup index entry for copy up origin") Cc: <stable@vger.kernel.org> # v4.13 Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2017-10-24 16:06:16 +02:00
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copy_up.c	ovl: fix missing unlock_rename() in ovl_do_copy_up()	2017-10-05 15:53:18 +02:00
dir.c	ovl: fix missing unlock_rename() in ovl_do_copy_up()	2017-10-05 15:53:18 +02:00
inode.c	ovl: fix EIO from lookup of non-indexed upper	2017-10-24 16:06:16 +02:00
Kconfig	ovl: introduce the inodes index dir feature	2017-07-04 22:03:17 +02:00
Makefile	ovl: split super.c	2016-12-16 11:02:56 +01:00
namei.c	ovl: fix EIO from lookup of non-indexed upper	2017-10-24 16:06:16 +02:00
overlayfs.h	ovl: fix EIO from lookup of non-indexed upper	2017-10-24 16:06:16 +02:00
ovl_entry.h	ovl: fix regression caused by exclusive upper/work dir protection	2017-10-05 15:53:18 +02:00
readdir.c	ovl: fix dentry leak in ovl_indexdir_cleanup()	2017-10-05 15:53:18 +02:00
super.c	ovl: add NULL check in ovl_alloc_inode	2017-10-19 16:19:51 +02:00
util.c	ovl: fix missing unlock_rename() in ovl_do_copy_up()	2017-10-05 15:53:18 +02:00