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Su Yue e240c1b363 bcachefs: fix memleak in bch2_split_devs 
The pointer dev_name can be modified by strseq(),
then causes the memleak:

unreferenced object 0xffff9d08a2916c80 (size 32):
  comm "mount.bcachefs", pid 9090, jiffies 4295856224 (age 17.564s)
  hex dump (first 32 bytes):
    2f 64 65 76 2f 6d 61 70 70 65 72 2f 74 65 73 74  /dev/mapper/test
    2d 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00  -0..............
  backtrace:
    [<00000000c5d3be7d>] __kmem_cache_alloc_node+0x1f3/0x2c0
    [<0000000052215d26>] __kmalloc_node_track_caller+0x51/0x150
    [<0000000069fea956>] kstrdup+0x32/0x60
    [<000000000877fcf1>] bch2_split_devs+0x3f/0x150 [bcachefs]
    [<000000007ee93204>] bch2_mount+0xcb/0x640 [bcachefs]
    [<000000002dd1e04b>] legacy_get_tree+0x30/0x60
    [<000000006afc31d3>] vfs_get_tree+0x28/0xf0
    [<000000007b0c538e>] path_mount+0x475/0xb60
    [<0000000092de5882>] __x64_sys_mount+0x105/0x140
    [<0000000054fc05d8>] do_syscall_64+0x42/0xf0
    [<00000000df584910>] entry_SYSCALL_64_after_hwframe+0x6e/0x76

Fix it by copy pointer dev_name at beginning and free the copied
pointer at end.

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-01-21 06:01:45 -05:00
..
9p
Bunch of small fixes:
2023-11-04 09:20:04 -10:00
adfs
adfs: convert to new timestamp accessors
2023-10-18 13:26:18 +02:00
affs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
afs
afs: Fix use-after-free due to get/remove race in volume tree
2023-12-21 10:16:07 -08:00
autofs
autofs: add: new_inode check in autofs_fill_super()
2023-11-20 14:56:36 +01:00
bcachefs
bcachefs: fix memleak in bch2_split_devs
2024-01-21 06:01:45 -05:00
befs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
bfs
bfs: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
btrfs
for-6.7-rc5-tag
2023-12-17 09:27:36 -08:00
cachefiles
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
ceph
Two items:
2023-11-10 09:52:56 -08:00
coda
coda: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
configfs
configfs: convert to new timestamp accessors
2023-10-18 13:26:19 +02:00
cramfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
crypto
This update includes the following changes:
2023-11-02 16:15:30 -10:00
debugfs
debugfs: initialize cancellations earlier
2023-12-22 07:33:02 +01:00
devpts
devpts: convert to new timestamp accessors
2023-10-18 13:26:20 +02:00
dlm
dlm: slow down filling up processing queue
2023-10-12 15:21:00 -05:00
ecryptfs
fs: Pass AT_GETATTR_NOSEC flag to getattr interface function
2023-11-18 14:54:07 +01:00
efivarfs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
efs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
erofs
MAINTAINERS: erofs: add EROFS webpage
2023-11-17 19:55:46 +08:00
exfat
exfat: fix ctime is not updated
2023-11-03 22:24:11 +09:00
exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
2023-10-28 16:16:19 +02:00
ext2
ext2: Fix ki_pos update for DIO buffered-io fallback case
2023-11-22 10:17:10 +01:00
ext4
ext4: fix warning in ext4_dio_write_end_io()
2023-11-30 23:29:34 -05:00
f2fs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
fat
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
freevxfs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
fscache
fscache: Use clear_and_wake_up_bit() in fscache_create_volume_work()
2023-01-30 12:51:54 +00:00
fuse
fuse: disable FOPEN_PARALLEL_DIRECT_WRITES with FUSE_DIRECT_IO_ALLOW_MMAP
2023-12-04 10:19:32 +01:00
gfs2
gfs2 fixes
2023-11-07 11:54:17 -08:00
hfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
hfsplus
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
hostfs
hostfs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
hpfs
hpfs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
hugetlbfs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
iomap
Many singleton patches against the MM code. The patch series which are
2023-11-02 19:38:47 -10:00
isofs
isofs: convert to new timestamp accessors
2023-10-18 14:08:22 +02:00
jbd2
jbd2: fix soft lockup in journal_finish_inode_data_buffers()
2023-12-12 10:25:46 -05:00
jffs2
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
jfs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
kernfs
Driver core changes for 6.7-rc1
2023-11-03 15:15:47 -10:00
lockd
SUNRPC: change how svc threads are asked to exit.
2023-10-16 12:44:04 -04:00
minix
minix: convert to new timestamp accessors
2023-10-18 14:08:23 +02:00
netfs
netfs: Only call folio_start_fscache() one time for each folio
2023-09-18 12:03:46 -07:00
nfs
NFS client updates for Linux 6.7
2023-11-08 13:39:16 -08:00
nfs_common
NFSv4.2: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:52 -07:00
nfsd
nfsd-6.7 fixes:
2023-12-20 11:16:50 -08:00
nilfs2
nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
2023-12-06 16:12:50 -08:00
nls
nls: Hide new NLS_UCS2_UTILS
2023-08-31 12:07:34 -05:00
notify
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
ntfs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
ntfs3
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
ocfs2
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
omfs
omfs: convert to new timestamp accessors
2023-10-18 14:08:25 +02:00
openpromfs
openpromfs: convert to new timestamp accessors
2023-10-18 14:08:25 +02:00
orangefs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
overlayfs
overlayfs fixes for 6.7-rc7
2023-12-20 12:04:03 -08:00
proc
mm/pagemap: fix wr-protect even if PM_SCAN_WP_MATCHING not set
2023-12-06 16:12:45 -08:00
pstore
pstore updates for v6.7-rc1
2023-10-30 19:26:39 -10:00
qnx4
qnx4: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
qnx6
qnx6: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
quota
Many singleton patches against the MM code. The patch series which are
2023-11-02 19:38:47 -10:00
ramfs
ramfs: convert to new timestamp accessors
2023-10-18 14:08:26 +02:00
reiserfs
Many singleton patches against the MM code. The patch series which are
2023-11-02 19:38:47 -10:00
romfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
smb
ksmbd server fix, also for stable
2023-12-28 16:12:23 -08:00
squashfs
squashfs: squashfs_read_data need to check if the length is 0
2023-12-06 16:12:45 -08:00
sysfs
kernfs: sysfs: support custom llseek method for sysfs entries
2023-10-05 13:42:11 +02:00
sysv
sysv: convert to new timestamp accessors
2023-10-18 14:08:28 +02:00
tracefs
eventfs: Fix file and directory uid and gid ownership
2023-12-22 08:13:55 -05:00
ubifs
This pull request contains updates for UBI and UBIFS
2023-11-05 08:28:32 -10:00
udf
\n
2023-11-02 08:19:51 -10:00
ufs
fix ufs_get_locked_folio() breakage
2023-12-13 11:14:09 -05:00
unicode
unicode: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:54 -07:00
vboxsf
vboxsf: convert to new timestamp accessors
2023-10-18 14:08:29 +02:00
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-08-20 10:33:43 -07:00
xfs
Code changes for 6.7-rc2:
2023-11-25 08:57:09 -08:00
zonefs
zonefs: convert to new timestamp accessors
2023-10-18 14:08:29 +02:00
aio.c
aio: Annotate struct kioctx_table with __counted_by
2023-09-20 14:22:01 +02:00
anon_inodes.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
attr.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
bad_inode.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
binfmt_elf_fdpic.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_elf_test.c
…
binfmt_elf.c
binfmt_elf: Only report padzero() errors when PROT_WRITE
2023-10-03 19:48:44 -07:00
binfmt_flat.c
…
binfmt_misc.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_script.c
…
buffer.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
char_dev.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
compat_binfmt_elf.c
…
coredump.c
v6.5/vfs.misc
2023-06-26 09:50:21 -07:00
d_path.c
fs: d_path: include internal.h
2023-05-17 09:16:59 +02:00
dax.c
mm: convert DAX lock/unlock page to lock/unlock folio
2023-10-04 10:32:20 -07:00
dcache.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
direct-io.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
drop_caches.c
fs: drop_caches: draining pages before dropping caches
2023-08-18 10:12:11 -07:00
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-07-11 11:41:34 +02:00
eventpoll.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
exec.c
mm/mremap: allow moves within the same VMA for stack moves
2023-10-04 10:32:20 -07:00
fcntl.c
treewide: mark stuff as __ro_after_init
2023-10-18 14:43:23 -07:00
fhandle.c
exportfs: add helpers to check if filesystem can encode/decode file handles
2023-10-24 17:57:45 +02:00
file_table.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
file.c
file, i915: fix file reference for mmap_singleton()
2023-10-25 22:17:04 +02:00
filesystems.c
…
fs_context.c
fs: factor out vfs_parse_monolithic_sep() helper
2023-10-12 18:53:36 +03:00
fs_parser.c
…
fs_pin.c
…
fs_struct.c
kill do_each_thread()
2023-08-21 13:46:25 -07:00
fs_types.c
…
fs-writeback.c
vfs-6.7.misc
2023-10-30 09:14:19 -10:00
fsopen.c
fsconfig: ensure that dirfd is set to aux
2023-09-22 14:09:06 +02:00
init.c
fs: add a new SB_I_NOUMASK flag
2023-10-19 11:02:47 +02:00
inode.c
filemap: add a per-mapping stable writes flag
2023-11-20 15:05:18 +01:00
internal.h
fs: store real path instead of fake path in backing file f_path
2023-10-19 11:03:15 +02:00
ioctl.c
v6.6-vfs.super
2023-08-28 11:04:18 -07:00
Kconfig
mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
2023-12-06 16:12:49 -08:00
Kconfig.binfmt
riscv: support the elf-fdpic binfmt loader
2023-08-23 14:17:43 -07:00
kernel_read_file.c
fs: Fix kernel-doc warnings
2023-08-19 12:12:12 +02:00
libfs.c
libfs: getdents() should return 0 after reaching EOD
2023-11-20 15:34:22 +01:00
locks.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
Makefile
bcachefs: Initial commit
2023-10-22 17:08:07 -04:00
mbcache.c
mbcache: dynamically allocate the mbcache shrinker
2023-10-04 10:32:25 -07:00
mnt_idmapping.c
fs: export mnt_idmap_get/mnt_idmap_put
2023-11-03 23:28:33 +01:00
mount.h
…
mpage.c
buffer: remove folio_create_empty_buffers()
2023-10-25 16:47:10 -07:00
namei.c
vfs-6.7.misc
2023-10-30 09:14:19 -10:00
namespace.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
nsfs.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
open.c
cred: get rid of CONFIG_DEBUG_CREDENTIALS
2023-12-15 14:19:48 -08:00
pipe.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
pnode.c
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
pnode.h
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
posix_acl.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
proc_namespace.c
tty, proc, kernfs, random: Use copy_splice_read()
2023-05-24 08:42:16 -06:00
read_write.c
fs: Fix one kernel-doc comment
2023-08-15 08:32:45 +02:00
readdir.c
vfs: get rid of old '->iterate' directory operation
2023-08-06 15:08:35 +02:00
remap_range.c
fs: use UB-safe check for signed addition overflow in remap_verify_area
2023-05-24 11:03:59 +02:00
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
stack.c
fs: convert core infrastructure to new timestamp accessors
2023-10-18 13:26:15 +02:00
stat.c
fs: Pass AT_GETATTR_NOSEC flag to getattr interface function
2023-11-18 14:54:07 +01:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-17 15:20:17 +02:00
super.c
overlayfs update for 6.7-rc1
2023-11-07 11:46:31 -08:00
sync.c
…
sysctls.c
sysctl: Refactor base paths registrations
2023-05-23 21:43:26 -07:00
timerfd.c
…
userfaultfd.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
utimes.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
xattr.c
xattr: make the xattr array itself const
2023-10-09 16:24:16 +02:00