diff options
| author | Pavel Shilovsky <pshilov@microsoft.com> | 2016-11-04 11:50:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-06 11:16:15 +0100 |
| commit | f0b715409cb9cf7e21e690f9b163047739761962 (patch) | |
| tree | fe2ba9ffc02a74fb38c7903482aeae4868a399ff /fs/cifs/cifsproto.h | |
| parent | 6dcb01e7833369acd7ff3b54f49a0a99f4fdf6c2 (diff) | |
CIFS: Fix a possible memory corruption during reconnect
commit 53e0e11efe9289535b060a51d4cf37c25e0d0f2b upstream.
We can not unlock/lock cifs_tcp_ses_lock while walking through ses
and tcon lists because it can corrupt list iterator pointers and
a tcon structure can be released if we don't hold an extra reference.
Fix it by moving a reconnect process to a separate delayed work
and acquiring a reference to every tcon that needs to be reconnected.
Also do not send an echo request on newly established connections.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index c63fd1dde25b..54590fd33df1 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -205,6 +205,9 @@ extern void cifs_add_pending_open_locked(struct cifs_fid *fid, struct tcon_link *tlink, struct cifs_pending_open *open); extern void cifs_del_pending_open(struct cifs_pending_open *open); +extern void cifs_put_tcp_session(struct TCP_Server_Info *server, + int from_reconnect); +extern void cifs_put_tcon(struct cifs_tcon *tcon); #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) extern void cifs_dfs_release_automount_timer(void); |