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Paulo Alcantara 869da64d07 cifs: fix memory leak of smb3_fs_context_dup::server_hostname 
Fix memory leak of smb3_fs_context_dup::server_hostname when parsing
and duplicating fs contexts during mount(2) as reported by kmemleak:

  unreferenced object 0xffff888125715c90 (size 16):
    comm "mount.cifs", pid 3832, jiffies 4304535868 (age 190.094s)
    hex dump (first 16 bytes):
      7a 65 6c 64 61 2e 74 65 73 74 00 6b 6b 6b 6b a5  zelda.test.kkkk.
    backtrace:
      [<ffffffff8168106e>] kstrdup+0x2e/0x60
      [<ffffffffa027a362>] smb3_fs_context_dup+0x392/0x8d0 [cifs]
      [<ffffffffa0136353>] cifs_smb3_do_mount+0x143/0x1700 [cifs]
      [<ffffffffa02795e8>] smb3_get_tree+0x2e8/0x520 [cifs]
      [<ffffffff817a19aa>] vfs_get_tree+0x8a/0x2d0
      [<ffffffff8181e3e3>] path_mount+0x423/0x1a10
      [<ffffffff8181fbca>] __x64_sys_mount+0x1fa/0x270
      [<ffffffff83ae364b>] do_syscall_64+0x3b/0x90
      [<ffffffff83c0007c>] entry_SYSCALL_64_after_hwframe+0x44/0xae
  unreferenced object 0xffff888111deed20 (size 32):
    comm "mount.cifs", pid 3832, jiffies 4304536044 (age 189.918s)
    hex dump (first 32 bytes):
      44 46 53 52 4f 4f 54 31 2e 5a 45 4c 44 41 2e 54  DFSROOT1.ZELDA.T
      45 53 54 00 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5  EST.kkkkkkkkkkk.
    backtrace:
      [<ffffffff8168118d>] kstrndup+0x2d/0x90
      [<ffffffffa027ab2e>] smb3_parse_devname+0x9e/0x360 [cifs]
      [<ffffffffa01870c8>] cifs_setup_volume_info+0xa8/0x470 [cifs]
      [<ffffffffa018c469>] connect_dfs_target+0x309/0xc80 [cifs]
      [<ffffffffa018d6cb>] cifs_mount+0x8eb/0x17f0 [cifs]
      [<ffffffffa0136475>] cifs_smb3_do_mount+0x265/0x1700 [cifs]
      [<ffffffffa02795e8>] smb3_get_tree+0x2e8/0x520 [cifs]
      [<ffffffff817a19aa>] vfs_get_tree+0x8a/0x2d0
      [<ffffffff8181e3e3>] path_mount+0x423/0x1a10
      [<ffffffff8181fbca>] __x64_sys_mount+0x1fa/0x270
      [<ffffffff83ae364b>] do_syscall_64+0x3b/0x90
      [<ffffffff83c0007c>] entry_SYSCALL_64_after_hwframe+0x44/0xae

Fixes: 7be3248f3139 ("cifs: To match file servers, make sure the server hostname matches")
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-12 12:59:56 -06:00
..
9p
9p: Fix a bunch of kerneldoc warnings shown up by W=1
2021-10-04 22:07:46 +01:00
adfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
affs
affs: use bdev_nr_sectors instead of open coding it
2021-10-18 14:43:22 -06:00
afs
AFS changes
2021-11-02 12:39:57 -07:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
bfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
btrfs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
cachefiles
for-5.16/ki_complete-2021-10-29
2021-11-01 10:17:11 -07:00
ceph
selinux/stable-5.16 PR 20211101
2021-11-01 21:06:18 -07:00
cifs
cifs: fix memory leak of smb3_fs_context_dup::server_hostname
2021-11-12 12:59:56 -06:00
coda
coda: fix reference counting in coda_file_mmap error path
2021-04-23 14:42:39 -07:00
configfs
configfs: fix a race in configfs_lookup()
2021-08-25 07:58:49 +02:00
cramfs
cramfs: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:22 -06:00
crypto
fscrypt: improve a few comments
2021-10-25 19:11:50 -07:00
debugfs
debugfs: debugfs_create_file_size(): use IS_ERR to check for error
2021-09-21 09:09:06 +02:00
devpts
…
dlm
fs: dlm: avoid comms shutdown delay in release_lockspace
2021-09-01 11:29:14 -05:00
ecryptfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
efivarfs
…
efs
…
erofs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
exfat
exfat: fix incorrect loading of i_blocks for large files
2021-11-01 07:49:21 +09:00
exportfs
…
ext2
ext2: fix sleeping in atomic bugs on error
2021-09-22 13:05:23 +02:00
ext4
\n
2021-11-06 16:43:20 -07:00
f2fs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
fat
for-5.16/inode-sync-2021-10-29
2021-11-01 10:25:27 -07:00
freevxfs
…
fscache
fscache: Remove an unused static variable
2021-10-04 22:13:12 +01:00
fuse
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
gfs2
Changes in gfs2:
2021-11-02 12:35:04 -07:00
hfs
hfs: use bdev_nr_sectors instead of open coding it
2021-10-18 14:43:22 -06:00
hfsplus
hfsplus: use bdev_nr_sectors instead of open coding it
2021-10-18 14:43:23 -06:00
hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
treewide: Replace open-coded flex arrays in unions
2021-10-18 12:28:53 -07:00
hugetlbfs
hugetlbfs: fix mount mode command line processing
2021-07-23 17:43:28 -07:00
iomap
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-10-19 12:51:02 +02:00
jbd2
jbd2: add sparse annotations for add_transaction_credits()
2021-08-30 23:36:50 -04:00
jffs2
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
jfs
Just one JFS patch
2021-11-03 09:23:25 -07:00
kernfs
Merge 5.15-rc6 into driver-core-next
2021-10-18 09:43:37 +02:00
ksmbd
ksmbd: add buffer validation in session setup
2021-10-20 00:07:10 -05:00
lockd
Critical bug fixes:
2021-09-22 09:21:02 -07:00
minix
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
netfs
netfs: Fix READ/WRITE confusion when calling iov_iter_xarray()
2021-10-05 11:22:06 +01:00
nfs
selinux/stable-5.16 PR 20211101
2021-11-01 21:06:18 -07:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
\n
2021-11-06 16:43:20 -07:00
nilfs2
nilfs2: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:23 -06:00
nls
…
notify
fanotify: Allow users to request FAN_FS_ERROR events
2021-10-27 12:53:45 +02:00
ntfs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
ntfs3
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
ocfs2
ocfs2: do not zero pages beyond i_size
2021-11-06 13:30:32 -07:00
omfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
openpromfs
…
orangefs
mm: don't include <linux/blkdev.h> in <linux/backing-dev.h>
2021-10-18 06:17:01 -06:00
overlayfs
fs: get rid of the res2 iocb->ki_complete argument
2021-10-25 10:36:24 -06:00
proc
Merge branch 'akpm' (patches from Andrew)
2021-11-06 14:08:17 -07:00
pstore
pstore/blk: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:23 -06:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
…
quota
\n
2021-11-06 16:40:48 -07:00
ramfs
mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h>
2021-10-18 06:17:01 -06:00
reiserfs
\n
2021-11-06 16:40:48 -07:00
romfs
…
smbfs_common
cifs: Move SMB2_Create definitions to the shared area
2021-11-05 09:55:36 -05:00
squashfs
squashfs: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:23 -06:00
sysfs
fs/sysfs/dir.c: replace S_IRWXU|S_IRUGO|S_IXUGO with 0755 sysfs_create_dir_ns()
2021-10-05 16:35:05 +02:00
sysv
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
tracefs
tracefs: Have tracefs directories not set OTH permission bits by default
2021-10-08 18:08:43 -04:00
ubifs
fscrypt: remove fscrypt_operations::max_namelen
2021-09-20 19:32:33 -07:00
udf
udf: use sb_bdev_nr_blocks
2021-10-18 14:43:23 -06:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-09-27 11:26:21 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
New code for 5.16:
2021-11-02 12:42:56 -07:00
zonefs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
aio.c
Various hardening fixes and cleanups for 5.16-rc1
2021-11-01 17:29:10 -07:00
anon_inodes.c
fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure()
2021-09-19 22:35:37 -04:00
attr.c
fs: Move notify_change permission checks into may_setattr
2021-08-13 00:41:05 -04:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
coredump: Limit coredumps to a single thread group
2021-10-08 12:06:02 -05:00
binfmt_elf.c
Merge branch 'per_signal_struct_coredumps-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-11-03 12:15:29 -07:00
binfmt_flat.c
binfmt: remove in-tree usage of MAP_EXECUTABLE
2021-06-29 10:53:50 -07:00
binfmt_misc.c
…
binfmt_script.c
…
buffer.c
fs: simplify init_page_buffers
2021-10-18 14:43:22 -06:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
coredump: Limit coredumps to a single thread group
2021-10-08 12:06:02 -05:00
d_path.c
d_path: fix Kernel doc validator complaining
2021-11-06 13:30:32 -07:00
dax.c
New code for 5.15:
2021-08-31 11:13:35 -07:00
dcache.c
…
direct-io.c
fs: get rid of the res2 iocb->ki_complete argument
2021-10-25 10:36:24 -06:00
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: Export eventfd_wake_count to modules
2021-09-06 07:20:56 -04:00
eventpoll.c
ARM development updates for 5.15:
2021-09-09 13:25:49 -07:00
exec.c
exec: Check for a pending fatal signal instead of core_state
2021-10-06 11:27:55 -05:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
…
file_table.c
…
file.c
virtio,vdpa,vhost: features, fixes
2021-09-11 14:48:42 -07:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
memcg: charge fs_context and legacy_fs_context
2021-09-03 09:58:12 -07:00
fs_parser.c
namei: Standardize callers of filename_lookup()
2021-09-07 16:07:47 -04:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
Various hardening fixes and cleanups for 5.16-rc1
2021-11-01 17:29:10 -07:00
fsopen.c
…
init.c
…
inode.c
fs: export an inode_update_time helper
2021-10-26 19:08:08 +02:00
internal.h
block: simplify the block device syncing code
2021-10-22 08:36:55 -06:00
io_uring.c
selinux/stable-5.16 PR 20211101
2021-11-01 21:06:18 -07:00
io-wq.c
selinux/stable-5.16 PR 20211101
2021-11-01 21:06:18 -07:00
io-wq.h
io_uring: optimise INIT_WQ_LIST
2021-10-19 05:49:54 -06:00
ioctl.c
New code for 5.15:
2021-08-31 11:06:32 -07:00
Kconfig
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
Kconfig.binfmt
binfmt: remove support for em86 (alpha only)
2021-07-25 22:33:03 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
fs: remove noop_set_page_dirty()
2021-06-29 10:53:48 -07:00
locks.c
locks: remove changelog comments
2021-10-19 14:11:39 -04:00
Makefile
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
mbcache.c
…
mount.h
…
mpage.c
…
namei.c
File locking changes for v5.16
2021-11-01 09:06:53 -07:00
namespace.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
no-block.c
…
nsfs.c
…
open.c
Merge branch 'akpm' (patches from Andrew)
2021-11-06 14:08:17 -07:00
pipe.c
Revert "mm/gup: remove try_get_page(), call try_get_compound_head() directly"
2021-09-07 11:03:45 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
fs/posix_acl.c: avoid -Wempty-body warning
2021-11-06 13:30:32 -07:00
proc_namespace.c
…
read_write.c
fs: remove leftover comments from mandatory locking removal
2021-10-26 12:20:50 -04:00
readdir.c
…
remap_range.c
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
select.c
Revert "memcg: enable accounting for pollfd and select bits arrays"
2021-09-07 11:26:23 -07:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-19 17:18:48 -07:00
signalfd.c
signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency
2021-07-23 13:16:43 -05:00
splice.c
…
stack.c
…
stat.c
fs: add generic helper for filling statx attribute flags
2021-08-17 11:47:43 +02:00
statfs.c
…
super.c
fs: explicitly unregister per-superblock BDIs
2021-11-06 13:30:34 -07:00
sync.c
block: simplify the block device syncing code
2021-10-22 08:36:55 -06:00
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: fix a race between writeprotect and exit_mmap()
2021-10-18 20:22:02 -10:00
utimes.c
…
xattr.c
…