Paul Aurich 7a991df9e5 cifs: Fix leak when handling lease break for cached root fid ... commit baf57b56d3 upstream. Handling a lease break for the cached root didn't free the smb2_lease_break_work allocation, resulting in a leak: unreferenced object 0xffff98383a5af480 (size 128): comm "cifsd", pid 684, jiffies 4294936606 (age 534.868s) hex dump (first 32 bytes): c0 ff ff ff 1f 00 00 00 88 f4 5a 3a 38 98 ff ff ..........Z:8... 88 f4 5a 3a 38 98 ff ff 80 88 d6 8a ff ff ff ff ..Z:8........... backtrace: [<0000000068957336>] smb2_is_valid_oplock_break+0x1fa/0x8c0 [<0000000073b70b9e>] cifs_demultiplex_thread+0x73d/0xcc0 [<00000000905fa372>] kthread+0x11c/0x150 [<0000000079378e4e>] ret_from_fork+0x22/0x30 Avoid this leak by only allocating when necessary. Fixes: a93864d939 ("cifs: add lease tracking to the cached root fid") Signed-off-by: Paul Aurich <paul@darkrain42.org> CC: Stable <stable@vger.kernel.org> # v4.18+ Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-08-21 13:05:24 +02:00
..
Kconfig	…
Makefile	…
asn1.c	…
cache.c	…
cifs_debug.c	…
cifs_debug.h	…
cifs_dfs_ref.c	…
cifs_fs_sb.h	…
cifs_ioctl.h	…
cifs_spnego.c	…
cifs_spnego.h	…
cifs_unicode.c	…
cifs_unicode.h	…
cifs_uniupr.h	…
cifsacl.c	…
cifsacl.h	…
cifsencrypt.c	…
cifsfs.c	…
cifsfs.h	…
cifsglob.h	…
cifspdu.h	…
cifsproto.h	…
cifsroot.c	…
cifssmb.c	cifs: fix leaked reference on requeued write	2020-05-20 08:20:34 +02:00
connect.c	SMB3: Honor 'handletimeout' flag for multiuser mounts	2020-07-09 09:37:55 +02:00
dfs_cache.c	…
dfs_cache.h	…
dir.c	…
dns_resolve.c	…
dns_resolve.h	…
export.c	…
file.c	cifs: Fix null pointer check in cifs_read	2020-06-03 08:21:14 +02:00
fscache.c	…
fscache.h	…
inode.c	Revert "cifs: Fix the target file was deleted when rename failed."	2020-07-29 10:18:41 +02:00
ioctl.c	…
link.c	…
misc.c	…
netmisc.c	…
nterr.c	…
nterr.h	…
ntlmssp.h	…
readdir.c	…
rfc1002pdu.h	…
sess.c	…
smb1ops.c	…
smb2file.c	…
smb2glob.h	…
smb2inode.c	…
smb2maperror.c	…
smb2misc.c	cifs: Fix leak when handling lease break for cached root fid	2020-08-21 13:05:24 +02:00
smb2ops.c	cifs/smb3: Fix data inconsistent when zero file range	2020-06-30 15:36:51 -04:00
smb2pdu.c	smb3: warn on confusing error scenario with sec=krb5	2020-08-21 13:05:19 +02:00
smb2pdu.h	…
smb2proto.h	…
smb2status.h	…
smb2transport.c	…
smbdirect.c	…
smbdirect.h	…
smbencrypt.c	…
smberr.h	…
smbfsctl.h	…
trace.c	…
trace.h	…
transport.c	cifs: prevent truncation from long to int in wait_for_free_credits	2020-07-22 09:32:52 +02:00
winucase.c	…
xattr.c	…