Amir Goldstein 82a0e25734 ovl: relax WARN_ON() on rename to self ... commit 6889ee5a53 upstream. In ovl_rename(), if new upper is hardlinked to old upper underneath overlayfs before upper dirs are locked, user will get an ESTALE error and a WARN_ON will be printed. Changes to underlying layers while overlayfs is mounted may result in unexpected behavior, but it shouldn't crash the kernel and it shouldn't trigger WARN_ON() either, so relax this WARN_ON(). Reported-by: syzbot+bb1836a212e69f8e201a@syzkaller.appspotmail.com Fixes: 804032fabb ("ovl: don't check rename to self") Cc: <stable@vger.kernel.org> # v4.9+ Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-12-17 19:56:11 +01:00
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copy_up.c	SPDX update for 5.2-rc6	2019-06-21 09:58:42 -07:00
dir.c	ovl: relax WARN_ON() on rename to self	2019-12-17 19:56:11 +01:00
export.c	ovl: Fix dereferencing possible ERR_PTR()	2019-09-11 16:11:45 +02:00
file.c	SPDX update for 5.2-rc6	2019-06-21 09:58:42 -07:00
inode.c	ovl: fix corner case of non-unique st_dev;st_ino	2019-12-17 19:56:10 +01:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
namei.c	ovl: fix lookup failure on multi lower squashfs	2019-12-17 19:56:10 +01:00
overlayfs.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
ovl_entry.h	ovl: fix lookup failure on multi lower squashfs	2019-12-17 19:56:10 +01:00
readdir.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
super.c	ovl: fix lookup failure on multi lower squashfs	2019-12-17 19:56:10 +01:00
util.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00