Amir Goldstein 601350ff58 ovl: fix access beyond unterminated strings ... KASAN detected slab-out-of-bounds access in printk from overlayfs, because string format used %*s instead of %.*s. > BUG: KASAN: slab-out-of-bounds in string+0x298/0x2d0 lib/vsprintf.c:604 > Read of size 1 at addr ffff8801c36c66ba by task syz-executor2/27811 > > CPU: 0 PID: 27811 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #36 ... > printk+0xa7/0xcf kernel/printk/printk.c:1996 > ovl_lookup_index.cold.15+0xe8/0x1f8 fs/overlayfs/namei.c:689 Reported-by: syzbot+376cea2b0ef340db3dd4@syzkaller.appspotmail.com Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Fixes: 359f392ca5 ("ovl: lookup index entry for copy up origin") Cc: <stable@vger.kernel.org> # v4.13		2018-10-04 14:49:10 +02:00
..
copy_up.c	vfs: swap names of {do,vfs}_clone_file_range()	2018-09-24 10:54:01 +02:00
dir.c	ovl: set I_CREATING on inode being created	2018-08-22 13:15:25 -07:00
export.c	ovl: Modify ovl_lookup() and friends to lookup metacopy dentry	2018-07-20 09:56:09 +02:00
file.c	vfs: swap names of {do,vfs}_clone_file_range()	2018-09-24 10:54:01 +02:00
inode.c	ovl: make symbol 'ovl_aops' static	2018-09-25 20:41:23 +02:00
Kconfig	ovl: Provide a mount option metacopy=on/off for metadata copyup	2018-07-20 09:56:06 +02:00
Makefile	ovl: stack file ops	2018-07-18 15:44:41 +02:00
namei.c	ovl: fix access beyond unterminated strings	2018-10-04 14:49:10 +02:00
overlayfs.h	ovl: add helper to force data copy-up	2018-07-20 09:56:16 +02:00
ovl_entry.h	ovl: Store lower data inode in ovl_inode	2018-07-20 09:56:11 +02:00
readdir.c	ovl: fix wrong use of impure dir cache in ovl_iterate()	2018-07-17 16:04:34 +02:00
super.c	ovl: fix oopses in ovl_fill_super() failure paths	2018-09-10 12:55:49 +02:00
util.c	ovl: fix memory leak on unlink of indexed file	2018-09-24 10:54:01 +02:00