diff options
| author |   Steve French <stfrench@microsoft.com> | 2021-07-01 12:22:47 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-07-02 18:35:25 -0500 |
| commit | 01cf30825c8729884090151ab97f1c9c5d14a8bc (patch) | |
| tree | d6d98ec0bffb80fb128a4a0bfbe58e6151805dc4 /fs/cifs/cifsglob.h | |
| parent | Merge tag '5.14-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6 (diff) | |
| download | linux-dev-01cf30825c8729884090151ab97f1c9c5d14a8bc.tar.xz linux-dev-01cf30825c8729884090151ab97f1c9c5d14a8bc.zip | |
cifs: make locking consistent around the server session status
There were three places where we were not taking the spinlock
around updates to server->tcpStatus when it was being modified.
To be consistent (also removes Coverity warning) and to remove
possibility of race best to lock all places where it is updated.
Two of the three were in initialization of the field and can't
race - but added lock around the other.
Addresses-Coverity: 1399512 ("Data race condition")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 3100f8b66e60..921680fb7931 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -577,6 +577,7 @@ struct TCP_Server_Info { char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; struct smb_version_operations *ops; struct smb_version_values *vals; + /* updates to tcpStatus protected by GlobalMid_Lock */ enum statusEnum tcpStatus; /* what we think the status is */ char *hostname; /* hostname portion of UNC string */ struct socket *ssocket; @@ -1785,7 +1786,7 @@ require use of the stronger protocol */ * list operations on pending_mid_q and oplockQ * updates to XID counters, multiplex id and SMB sequence numbers * list operations on global DnotifyReqList - * updates to ses->status + * updates to ses->status and TCP_Server_Info->tcpStatus * updates to server->CurrentMid * tcp_ses_lock protects: * list operations on tcp and SMB session lists |