Moon Hee Lee be66551da2 fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist ... [ Upstream commit 0dc7117da8f92dd5fe077d712a756eccbe377d40 ] Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption. syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state. Reject such cases by verifying that the bitmap is not empty when index blocks exist. Reported-by: syzbot+b0373017f711c06ada64@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b0373017f711c06ada64 Fixes: d99208b919 ("fs/ntfs3: cancle set bad inode after removing name fails") Tested-by: syzbot+b0373017f711c06ada64@syzkaller.appspotmail.com Signed-off-by: Moon Hee Lee <moonhee.lee.ca@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-10-15 12:00:10 +02:00
..
lib
attrib.c
attrlist.c
bitfunc.c
bitmap.c
debug.h
dir.c	fs/ntfs3: Add sanity check for file name	2025-08-20 18:30:21 +02:00
file.c	Revert "fs/ntfs3: Replace inode_trylock with inode_lock"	2025-08-15 12:13:32 +02:00
frecord.c	fs/ntfs3: cancle set bad inode after removing name fails	2025-08-15 12:13:32 +02:00
fslog.c
fsntfs.c
index.c	fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist	2025-10-15 12:00:10 +02:00
inode.c	fs/ntfs3: correctly create symlink for relative path	2025-08-20 18:30:21 +02:00
Kconfig
lznt.c
Makefile
namei.c	fs/ntfs3: cancle set bad inode after removing name fails	2025-08-15 12:13:32 +02:00
ntfs_fs.h	fs/ntfs3: cancle set bad inode after removing name fails	2025-08-15 12:13:32 +02:00
ntfs.h	fs/ntfs3: Prevent integer overflow in hdr_first_de()	2025-04-10 14:39:23 +02:00
record.c
run.c	fs: ntfs3: Fix integer overflow in run_unpack()	2025-10-15 12:00:10 +02:00
super.c
upcase.c
xattr.c