6.1-stable review patch. If anyone has any objections, please let me know.
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From: Shyam Prasad N sprasad@microsoft.com
[ Upstream commit 29954d5b1e0d67a4cd61c30c2201030c97e94b1e ]
My last change in this area introduced a change which accounted for primary channel in the interface ref count. However, it did not reduce this ref count on deallocation of the primary channel. i.e. during umount.
Fixing this leak here, by dropping this ref count for primary channel while freeing up the session.
Fixes: fa1d0508bdd4 ("cifs: account for primary channel in the interface list") Cc: stable@vger.kernel.org Reported-by: Paulo Alcantara pc@manguebit.com Signed-off-by: Shyam Prasad N sprasad@microsoft.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/client/connect.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 6ca1e00b3f76a..5b19918938346 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -2070,6 +2070,12 @@ void cifs_put_smb_ses(struct cifs_ses *ses) } }
+ /* we now account for primary channel in iface->refcount */ + if (ses->chans[0].iface) { + kref_put(&ses->chans[0].iface->refcount, release_iface); + ses->chans[0].server = NULL; + } + sesInfoFree(ses); cifs_put_tcp_session(server, 0); }