original_kernel/fs
Pavel Skripkin 8fd0c1b064 nilfs2: fix memory leak in nilfs_sysfs_delete_device_group
My local syzbot instance hit memory leak in nilfs2.  The problem was in
missing kobject_put() in nilfs_sysfs_delete_device_group().

kobject_del() does not call kobject_cleanup() for passed kobject and it
leads to leaking duped kobject name if kobject_put() was not called.

Fail log:

  BUG: memory leak
  unreferenced object 0xffff8880596171e0 (size 8):
  comm "syz-executor379", pid 8381, jiffies 4294980258 (age 21.100s)
  hex dump (first 8 bytes):
    6c 6f 6f 70 30 00 00 00                          loop0...
  backtrace:
     kstrdup+0x36/0x70 mm/util.c:60
     kstrdup_const+0x53/0x80 mm/util.c:83
     kvasprintf_const+0x108/0x190 lib/kasprintf.c:48
     kobject_set_name_vargs+0x56/0x150 lib/kobject.c:289
     kobject_add_varg lib/kobject.c:384 [inline]
     kobject_init_and_add+0xc9/0x160 lib/kobject.c:473
     nilfs_sysfs_create_device_group+0x150/0x800 fs/nilfs2/sysfs.c:999
     init_nilfs+0xe26/0x12b0 fs/nilfs2/the_nilfs.c:637

Link: https://lkml.kernel.org/r/20210612140559.20022-1-paskripkin@gmail.com
Fixes: da7141fb78 ("nilfs2: add /sys/fs/nilfs2/<device> group")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-24 19:40:53 -07:00
..
9p 9p for 5.13-rc1 2021-05-07 11:18:52 -07:00
adfs
affs
afs afs: Re-enable freezing once a page fault is interrupted 2021-06-18 13:49:07 -07:00
autofs
befs
bfs
btrfs for-5.13-rc6-tag 2021-06-18 16:39:03 -07:00
cachefiles
ceph Notable items here are a series to take advantage of David Howells' 2021-05-06 10:27:02 -07:00
cifs cifs: change format of CIFS_FULL_KEY_DUMP ioctl 2021-05-27 15:26:32 -05:00
coda
configfs treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
cramfs
crypto
debugfs debugfs: Fix debugfs_read_file_str() 2021-06-04 15:01:08 +02:00
devpts
dlm
ecryptfs fs: ecryptfs: remove BUG_ON from crypt_scatterlist 2021-05-13 18:32:26 +02:00
efivarfs
efs
erofs erofs: fix 1 lcluster-sized pcluster for big pcluster 2021-05-13 15:58:46 +08:00
exfat exfat: speed up iterate/lookup by fixing start point of traversing cluster chain 2021-04-27 20:45:07 +09:00
exportfs
ext2 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-02 09:14:01 -07:00
ext4 Miscellaneous ext4 bug fixes for v5.13 2021-06-06 14:24:13 -07:00
f2fs f2fs: return EINVAL for hole cases in swap file 2021-05-12 07:38:00 -07:00
fat fs: fat: fix spelling typo of values 2021-05-07 00:26:34 -07:00
freevxfs
fscache
fuse Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-02 09:14:01 -07:00
gfs2 Revert "gfs2: Fix mmap locking for write faults" 2021-06-01 23:16:42 +02:00
hfs
hfsplus hfsplus: prevent corruption in shrinking truncate 2021-05-14 19:41:32 -07:00
hostfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-02 09:14:01 -07:00
hpfs hpfs: replace one-element array with flexible-array member 2021-05-06 19:24:13 -07:00
hugetlbfs mm/hugetlb: expand restore_reserve_on_error functionality 2021-06-16 09:24:42 -07:00
iomap mm/filemap: fix readahead return types 2021-05-14 19:41:32 -07:00
isofs isofs: fix fall-through warnings for Clang 2021-05-06 19:24:13 -07:00
jbd2
jffs2 This pull request contains changes for JFFS2, UBI and UBIFS 2021-05-04 18:08:40 -07:00
jfs
kernfs
lockd
minix
netfs netfs: Make CONFIG_NETFS_SUPPORT auto-selected rather than manual 2021-05-25 13:48:04 +01:00
nfs NFSv4: Fix second deadlock in nfs4_evict_inode() 2021-06-03 10:14:42 -04:00
nfs_common
nfsd NFS client updates for Linux 5.13 2021-05-07 11:23:41 -07:00
nilfs2 nilfs2: fix memory leak in nilfs_sysfs_delete_device_group 2021-06-24 19:40:53 -07:00
nls
notify fanotify: fix copy_event_to_user() fid error clean up 2021-06-14 12:16:37 +02:00
ntfs
ocfs2 ocfs2: fix data corruption by fallocate 2021-06-05 08:58:12 -07:00
omfs
openpromfs
orangefs orangefs: leave files in the page cache for a few micro seconds at least 2021-04-29 08:06:05 -04:00
overlayfs overlayfs update for 5.13 2021-04-30 15:17:08 -07:00
proc proc: only require mm_struct for writing 2021-06-15 10:47:51 -07:00
pstore printk changes for 5.13 2021-04-27 18:09:44 -07:00
qnx4
qnx6
quota quota: Use 'hlist_for_each_entry' to simplify code 2021-05-10 16:27:49 +02:00
ramfs
reiserfs treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
romfs
squashfs squashfs: fix divide error in calculate_skip() 2021-05-14 19:41:32 -07:00
sysfs
sysv
tracefs
ubifs This pull request contains changes for JFFS2, UBI and UBIFS 2021-05-04 18:08:40 -07:00
udf
ufs
unicode .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
vboxsf
verity
xfs xfs: bunmapi has unnecessary AG lock ordering issues 2021-05-27 08:11:24 -07:00
zonefs \n 2021-04-29 11:06:13 -07:00
Kconfig NFS client updates for Linux 5.13 2021-05-07 11:23:41 -07:00
Kconfig.binfmt
Makefile
aio.c Revert "mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio" 2021-04-30 11:20:39 -07:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c block-5.13-2021-05-22 2021-05-22 07:40:34 -10:00
buffer.c Merge branch 'akpm' (patches from Andrew) 2021-05-05 13:50:15 -07:00
char_dev.c
compat_binfmt_elf.c
coredump.c coredump: Limit what can interrupt coredumps 2021-06-10 14:02:29 -07:00
d_path.c
dax.c dax fixes for 5.13-rc2 2021-05-15 08:28:08 -07:00
dcache.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c fs/epoll: restore waking from ep_done_scan() 2021-05-06 19:24:13 -07:00
exec.c
fcntl.c
fhandle.c
file.c Merge branch 'work.file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-05-03 11:05:28 -07:00
file_table.c
filesystems.c
fs-writeback.c
fs_context.c
fs_parser.c vfs: fs_parser: clean up kernel-doc warnings 2021-04-30 11:20:35 -07:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c mm: remove nrexceptional from inode: remove BUG_ON 2021-05-05 11:27:20 -07:00
internal.h
io-wq.c io-wq: Fix UAF when wakeup wqe in hash waitqueue 2021-05-26 09:03:56 -06:00
io-wq.h io_uring/io-wq: close io-wq full-stop gap 2021-05-25 19:39:58 -06:00
io_uring.c io_uring: add feature flag for rsrc tags 2021-06-10 16:33:51 -06:00
ioctl.c
kernel_read_file.c
libfs.c
locks.c Additional fixes and clean-ups for NFSD since tags/nfsd-5.13, 2021-05-05 13:44:19 -07:00
mbcache.c
mount.h
mpage.c
namei.c fs.idmapped.helpers.v5.13 2021-04-27 12:49:42 -07:00
namespace.c fs/mount_setattr: tighten permission checks 2021-05-12 14:13:16 +02:00
no-block.c
nsfs.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
remap_range.c
select.c
seq_file.c seq_file: Add a seq_bprintf function 2021-04-27 15:50:15 -07:00
signalfd.c signalfd: Remove SIL_PERF_EVENT fields from signalfd_siginfo 2021-05-18 16:20:54 -05:00
splice.c
stack.c
stat.c
statfs.c
super.c
sync.c
timerfd.c
userfaultfd.c userfaultfd: add UFFDIO_CONTINUE ioctl 2021-05-05 11:27:22 -07:00
utimes.c
xattr.c