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f950c85e78
linux/fs/cifs
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Zhang Xiaoxu f950c85e78 cifs: Fix pages leak when writedata alloc failed in cifs_write_from_iter() 
There is a kmemleak when writedata alloc failed:

  unreferenced object 0xffff888175ae4000 (size 4096):
    comm "dd", pid 19419, jiffies 4296028749 (age 739.396s)
    hex dump (first 32 bytes):
      80 02 b0 04 00 ea ff ff c0 02 b0 04 00 ea ff ff  ................
      80 22 4c 04 00 ea ff ff c0 22 4c 04 00 ea ff ff  ."L......"L.....
    backtrace:
      [<0000000072fdbb86>] __kmalloc_node+0x50/0x150
      [<0000000039faf56f>] __iov_iter_get_pages_alloc+0x605/0xdd0
      [<00000000f862a9d4>] iov_iter_get_pages_alloc2+0x3b/0x80
      [<000000008f226067>] cifs_write_from_iter+0x2ae/0xe40
      [<000000001f78f2f1>] __cifs_writev+0x337/0x5c0
      [<00000000257fcef5>] vfs_write+0x503/0x690
      [<000000008778a238>] ksys_write+0xb9/0x150
      [<00000000ed82047c>] do_syscall_64+0x35/0x80
      [<000000003365551d>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

__iov_iter_get_pages_alloc+0x605/0xdd0 is:
  want_pages_array at lib/iov_iter.c:1304
  (inlined by) __iov_iter_get_pages_alloc at lib/iov_iter.c:1457

If writedata allocate failed, the pages and pagevec should be cleanup.

Fixes: 8c5f9c1ab7 ("CIFS: Add support for direct I/O write")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2022-10-23 17:50:10 -05:00
..
asn1.c cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cached_dir.c cifs: drop the lease for cached directories on rmdir or rename 2022-10-19 17:57:41 -05:00
cached_dir.h cifs: drop the lease for cached directories on rmdir or rename 2022-10-19 17:57:41 -05:00
cifs_debug.c smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
cifs_debug.h smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
cifs_dfs_ref.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_fs_sb.h cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_ioctl.h smb3: improve SMB3 change notification support 2022-10-15 10:05:53 -05:00
cifs_spnego_negtokeninit.asn1 cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cifs_spnego.c cifs: use the chans_need_reconnect bitmap for reconnect status 2022-01-02 20:38:46 -06:00
cifs_spnego.h cifs: use the chans_need_reconnect bitmap for reconnect status 2022-01-02 20:38:46 -06:00
cifs_swn.c smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
cifs_swn.h cifs: simplify SWN code with dummy funcs instead of ifdefs 2021-04-25 16:28:22 -05:00
cifs_unicode.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c cifs: when insecure legacy is disabled shrink amount of SMB1 code 2022-08-05 11:24:03 -05:00
cifsacl.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsencrypt.c cifs: secmech: use shash_desc directly, remove sdesc 2022-10-07 23:08:39 -05:00
cifsfs.c cifs: Fix xid leak in cifs_copy_file_range() 2022-10-18 11:33:43 -05:00
cifsfs.h cifs: update internal module number 2022-10-19 17:57:51 -05:00
cifsglob.h smb3: improve SMB3 change notification support 2022-10-15 10:05:53 -05:00
cifspdu.h cifs: Replace a couple of one-element arrays with flexible-array members 2022-10-05 17:42:38 -05:00
cifsproto.h cifs: improve symlink handling for smb2+ 2022-10-13 09:36:04 -05:00
cifsroot.c cifs: move from strlcpy with unused retval to strscpy 2022-08-19 11:02:26 -05:00
cifssmb.c cifs: use ALIGN() and round_up() macros 2022-10-13 09:36:39 -05:00
connect.c cifs: use ALIGN() and round_up() macros 2022-10-13 09:36:39 -05:00
dfs_cache.c smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
dfs_cache.h cifs: support share failover when remounting 2021-07-22 11:43:23 -05:00
dir.c cifs: Fix xid leak in cifs_create() 2022-10-18 11:33:43 -05:00
dns_resolve.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dns_resolve.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
export.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
file.c cifs: Fix pages leak when writedata alloc failed in cifs_write_from_iter() 2022-10-23 17:50:10 -05:00
fs_context.c cifs: replace kfree() with kfree_sensitive() for sensitive data 2022-10-07 23:06:48 -05:00
fs_context.h smb3: allow deferred close timeout to be configurable 2022-08-11 20:03:04 -05:00
fscache.c smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
fscache.h cifs: Remove {cifs,nfs}_fscache_release_page() 2022-08-10 21:26:08 -05:00
inode.c cifs: Fix xid leak in cifs_get_file_info_unix() 2022-10-18 11:33:43 -05:00
ioctl.c smb3: improve SMB3 change notification support 2022-10-15 10:05:53 -05:00
Kconfig cifs: Support fscache indexing rewrite 2022-01-19 11:21:08 -06:00
link.c cifs: improve symlink handling for smb2+ 2022-10-13 09:36:04 -05:00
Makefile cifs: Move cached-dir functions into a separate file 2022-08-11 10:33:18 -05:00
misc.c cifs: secmech: use shash_desc directly, remove sdesc 2022-10-07 23:08:39 -05:00
netlink.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netlink.h cifs: Register generic netlink family 2020-12-14 09:16:22 -06:00
netmisc.c cifs: remove unused server parameter from calc_smb_size() 2022-08-17 18:07:13 -05:00
nterr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
nterr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
ntlmssp.h treewide: Replace zero-length arrays with flexible-array members 2022-02-17 07:00:39 -06:00
readdir.c cifs: improve symlink handling for smb2+ 2022-10-13 09:36:04 -05:00
rfc1002pdu.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
sess.c cifs: Fix xid leak in cifs_ses_add_channel() 2022-10-18 11:33:43 -05:00
smb1ops.c cifs: improve symlink handling for smb2+ 2022-10-13 09:36:04 -05:00
smb2file.c cifs: fix static checker warning 2022-10-14 12:35:25 -05:00
smb2glob.h smb3: move defines for ioctl protocol header and SMB2 sizes to smbfs_common 2022-03-26 23:09:20 -05:00
smb2inode.c cifs: drop the lease for cached directories on rmdir or rename 2022-10-19 17:57:41 -05:00
smb2maperror.c cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
smb2misc.c cifs: use ALIGN() and round_up() macros 2022-10-13 09:36:39 -05:00
smb2ops.c smb3: interface count displayed incorrectly 2022-10-19 10:06:23 -05:00
smb2pdu.c cifs: fix memory leaks in session setup 2022-10-19 17:57:51 -05:00
smb2pdu.h cifs: improve symlink handling for smb2+ 2022-10-13 09:36:04 -05:00
smb2proto.h smb3: improve SMB3 change notification support 2022-10-15 10:05:53 -05:00
smb2status.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2transport.c smb3: fix oops in calculating shash_setkey 2022-10-07 23:08:41 -05:00
smbdirect.c Fix formatting of client smbdirect RDMA logging 2022-10-05 01:31:04 -05:00
smbdirect.h Decrease the number of SMB3 smbdirect client SGEs 2022-10-05 01:29:21 -05:00
smbencrypt.c cifs: rename cifs_common to smbfs_common 2021-09-08 23:59:26 -05:00
smberr.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
trace.c smb3: Cleanup license mess 2019-01-24 09:37:33 -06:00
trace.h smb3: add dynamic trace points for tree disconnect 2022-10-05 01:31:18 -05:00
transport.c Scheduler changes for v6.1: 2022-10-10 09:10:28 -07:00
unc.c cifs: don't cargo-cult strndup() 2021-04-25 16:28:23 -05:00
winucase.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
xattr.c cifs: when insecure legacy is disabled shrink amount of SMB1 code 2022-08-05 11:24:03 -05:00