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smb: server: split ksmbd_rdma_stop_listening() out of ksmbd_rdma_destroy()

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[ Upstream commit bac7b996d42e458a94578f4227795a0d4deef6fa ]

We can't call destroy_workqueue(smb_direct_wq); before stop_sessions()!

Otherwise already existing connections try to use smb_direct_wq as
a NULL pointer.

Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Fixes: 0626e6641f ("cifsd: add server handler for central processing and tranport layers")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stefan Metzmacher 2025-08-12 18:45:46 +02:00 committed by Greg Kroah-Hartman
parent 7dd4064ace
commit 524e90e58a
3 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/smb/server/connection.c
View File

@ -436,7 +436,8 @@ void ksmbd_conn_transport_destroy(void)
{
mutex_lock(&init_lock);
ksmbd_tcp_destroy();
ksmbd_rdma_destroy();
ksmbd_rdma_stop_listening();
stop_sessions();
ksmbd_rdma_destroy();
mutex_unlock(&init_lock);
}

5
fs/smb/server/transport_rdma.c
View File

@ -2188,7 +2188,7 @@ int ksmbd_rdma_init(void)
return 0;
}
void ksmbd_rdma_destroy(void)
void ksmbd_rdma_stop_listening(void)
{
if (!smb_direct_listener.cm_id)
return;
@ -2197,7 +2197,10 @@ void ksmbd_rdma_destroy(void)
rdma_destroy_id(smb_direct_listener.cm_id);
smb_direct_listener.cm_id = NULL;
}
void ksmbd_rdma_destroy(void)
{
if (smb_direct_wq) {
destroy_workqueue(smb_direct_wq);
smb_direct_wq = NULL;

4
fs/smb/server/transport_rdma.h
View File

@ -54,13 +54,15 @@ struct smb_direct_data_transfer {
#ifdef CONFIG_SMB_SERVER_SMBDIRECT
int ksmbd_rdma_init(void);
void ksmbd_rdma_stop_listening(void);
void ksmbd_rdma_destroy(void);
bool ksmbd_rdma_capable_netdev(struct net_device *netdev);
void init_smbd_max_io_size(unsigned int sz);
unsigned int get_smbd_max_read_write_size(void);
#else
static inline int ksmbd_rdma_init(void) { return 0; }
static inline int ksmbd_rdma_destroy(void) { return 0; }
static inline void ksmbd_rdma_stop_listening(void) { }
static inline void ksmbd_rdma_destroy(void) { }
static inline bool ksmbd_rdma_capable_netdev(struct net_device *netdev) { return false; }
static inline void init_smbd_max_io_size(unsigned int sz) { }
static inline unsigned int get_smbd_max_read_write_size(void) { return 0; }