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-rw-r--r--fs/smb/client/cached_dir.c14
-rw-r--r--fs/smb/client/cached_dir.h8
-rw-r--r--fs/smb/client/cifsglob.h1
-rw-r--r--fs/smb/client/connect.c17
-rw-r--r--fs/smb/client/namespace.c3
-rw-r--r--fs/smb/client/readdir.c28
-rw-r--r--fs/smb/client/reparse.c1
-rw-r--r--fs/smb/client/sess.c7
-rw-r--r--fs/smb/client/smb2pdu.c33
-rw-r--r--fs/smb/client/smbdirect.c5
-rw-r--r--fs/smb/client/transport.c14
-rw-r--r--fs/smb/server/connection.c2
-rw-r--r--fs/smb/server/connection.h1
-rw-r--r--fs/smb/server/smb2pdu.c11
-rw-r--r--fs/smb/server/transport_rdma.c10
-rw-r--r--fs/smb/server/transport_tcp.c3
16 files changed, 102 insertions, 56 deletions
diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index 240d82c6f908..9831eac7b948 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -486,8 +486,17 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
spin_lock(&cfids->cfid_list_lock);
list_for_each_entry(cfid, &cfids->entries, entry) {
tmp_list = kmalloc(sizeof(*tmp_list), GFP_ATOMIC);
- if (tmp_list == NULL)
- break;
+ if (tmp_list == NULL) {
+ /*
+ * If the malloc() fails, we won't drop all
+ * dentries, and unmounting is likely to trigger
+ * a 'Dentry still in use' error.
+ */
+ cifs_tcon_dbg(VFS, "Out of memory while dropping dentries\n");
+ spin_unlock(&cfids->cfid_list_lock);
+ spin_unlock(&cifs_sb->tlink_tree_lock);
+ goto done;
+ }
spin_lock(&cfid->fid_lock);
tmp_list->dentry = cfid->dentry;
cfid->dentry = NULL;
@@ -499,6 +508,7 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
}
spin_unlock(&cifs_sb->tlink_tree_lock);
+done:
list_for_each_entry_safe(tmp_list, q, &entry, entry) {
list_del(&tmp_list->entry);
dput(tmp_list->dentry);
diff --git a/fs/smb/client/cached_dir.h b/fs/smb/client/cached_dir.h
index 1dfe79d947a6..bc8a812ff95f 100644
--- a/fs/smb/client/cached_dir.h
+++ b/fs/smb/client/cached_dir.h
@@ -21,10 +21,10 @@ struct cached_dirent {
struct cached_dirents {
bool is_valid:1;
bool is_failed:1;
- struct dir_context *ctx; /*
- * Only used to make sure we only take entries
- * from a single context. Never dereferenced.
- */
+ struct file *file; /*
+ * Used to associate the cache with a single
+ * open file instance.
+ */
struct mutex de_mutex;
int pos; /* Expected ctx->pos */
struct list_head entries;
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 3b32116b0b49..0c80ca352f3f 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1084,6 +1084,7 @@ struct cifs_chan {
};
#define CIFS_SES_FLAG_SCALE_CHANNELS (0x1)
+#define CIFS_SES_FLAGS_PENDING_QUERY_INTERFACES (0x2)
/*
* Session structure. One of these for each uid session with a particular host
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 6bf04d9a5491..f9aef60f1901 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -116,13 +116,9 @@ static void smb2_query_server_interfaces(struct work_struct *work)
rc = server->ops->query_server_interfaces(xid, tcon, false);
free_xid(xid);
- if (rc) {
- if (rc == -EOPNOTSUPP)
- return;
-
+ if (rc)
cifs_dbg(FYI, "%s: failed to query server interfaces: %d\n",
__func__, rc);
- }
queue_delayed_work(cifsiod_wq, &tcon->query_interfaces,
(SMB_INTERFACE_POLL_INTERVAL * HZ));
@@ -377,6 +373,13 @@ static int __cifs_reconnect(struct TCP_Server_Info *server,
if (!cifs_tcp_ses_needs_reconnect(server, 1))
return 0;
+ /*
+ * if smb session has been marked for reconnect, also reconnect all
+ * connections. This way, the other connections do not end up bad.
+ */
+ if (mark_smb_session)
+ cifs_signal_cifsd_for_reconnect(server, mark_smb_session);
+
cifs_mark_tcp_ses_conns_for_reconnect(server, mark_smb_session);
cifs_abort_connection(server);
@@ -385,7 +388,8 @@ static int __cifs_reconnect(struct TCP_Server_Info *server,
try_to_freeze();
cifs_server_lock(server);
- if (!cifs_swn_set_server_dstaddr(server)) {
+ if (!cifs_swn_set_server_dstaddr(server) &&
+ !SERVER_IS_CHAN(server)) {
/* resolve the hostname again to make sure that IP address is up-to-date */
rc = reconn_set_ipaddr_from_hostname(server);
cifs_dbg(FYI, "%s: reconn_set_ipaddr_from_hostname: rc=%d\n", __func__, rc);
@@ -4189,6 +4193,7 @@ retry:
return 0;
}
+ server->lstrp = jiffies;
server->tcpStatus = CifsInNegotiate;
spin_unlock(&server->srv_lock);
diff --git a/fs/smb/client/namespace.c b/fs/smb/client/namespace.c
index e3f9213131c4..a6655807c086 100644
--- a/fs/smb/client/namespace.c
+++ b/fs/smb/client/namespace.c
@@ -146,6 +146,9 @@ static char *automount_fullpath(struct dentry *dentry, void *page)
}
spin_unlock(&tcon->tc_lock);
+ if (unlikely(!page))
+ return ERR_PTR(-ENOMEM);
+
s = dentry_path_raw(dentry, page, PATH_MAX);
if (IS_ERR(s))
return s;
diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index 787d6bcb5d1d..c3feb26fcfd0 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -850,9 +850,9 @@ static bool emit_cached_dirents(struct cached_dirents *cde,
}
static void update_cached_dirents_count(struct cached_dirents *cde,
- struct dir_context *ctx)
+ struct file *file)
{
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -861,9 +861,9 @@ static void update_cached_dirents_count(struct cached_dirents *cde,
}
static void finished_cached_dirents_count(struct cached_dirents *cde,
- struct dir_context *ctx)
+ struct dir_context *ctx, struct file *file)
{
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -876,11 +876,12 @@ static void finished_cached_dirents_count(struct cached_dirents *cde,
static void add_cached_dirent(struct cached_dirents *cde,
struct dir_context *ctx,
const char *name, int namelen,
- struct cifs_fattr *fattr)
+ struct cifs_fattr *fattr,
+ struct file *file)
{
struct cached_dirent *de;
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -910,7 +911,8 @@ static void add_cached_dirent(struct cached_dirents *cde,
static bool cifs_dir_emit(struct dir_context *ctx,
const char *name, int namelen,
struct cifs_fattr *fattr,
- struct cached_fid *cfid)
+ struct cached_fid *cfid,
+ struct file *file)
{
bool rc;
ino_t ino = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
@@ -922,7 +924,7 @@ static bool cifs_dir_emit(struct dir_context *ctx,
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
add_cached_dirent(&cfid->dirents, ctx, name, namelen,
- fattr);
+ fattr, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
@@ -1022,7 +1024,7 @@ static int cifs_filldir(char *find_entry, struct file *file,
cifs_prime_dcache(file_dentry(file), &name, &fattr);
return !cifs_dir_emit(ctx, name.name, name.len,
- &fattr, cfid);
+ &fattr, cfid, file);
}
@@ -1073,8 +1075,8 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
* we need to initialize scanning and storing the
* directory content.
*/
- if (ctx->pos == 0 && cfid->dirents.ctx == NULL) {
- cfid->dirents.ctx = ctx;
+ if (ctx->pos == 0 && cfid->dirents.file == NULL) {
+ cfid->dirents.file = file;
cfid->dirents.pos = 2;
}
/*
@@ -1142,7 +1144,7 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
} else {
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
- finished_cached_dirents_count(&cfid->dirents, ctx);
+ finished_cached_dirents_count(&cfid->dirents, ctx, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
cifs_dbg(FYI, "Could not find entry\n");
@@ -1183,7 +1185,7 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
ctx->pos++;
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
- update_cached_dirents_count(&cfid->dirents, ctx);
+ update_cached_dirents_count(&cfid->dirents, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index bb25e77c5540..511611206dab 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -1172,7 +1172,6 @@ out:
if (!have_xattr_dev && (tag == IO_REPARSE_TAG_LX_CHR || tag == IO_REPARSE_TAG_LX_BLK))
return false;
- fattr->cf_dtype = S_DT(fattr->cf_mode);
return true;
}
diff --git a/fs/smb/client/sess.c b/fs/smb/client/sess.c
index b3fa9ee26912..12c99fb4023d 100644
--- a/fs/smb/client/sess.c
+++ b/fs/smb/client/sess.c
@@ -445,6 +445,10 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
ses->chans[chan_index].iface = iface;
spin_unlock(&ses->chan_lock);
+
+ spin_lock(&server->srv_lock);
+ memcpy(&server->dstaddr, &iface->sockaddr, sizeof(server->dstaddr));
+ spin_unlock(&server->srv_lock);
}
static int
@@ -494,8 +498,7 @@ cifs_ses_add_channel(struct cifs_ses *ses,
ctx->domainauto = ses->domainAuto;
ctx->domainname = ses->domainName;
- /* no hostname for extra channels */
- ctx->server_hostname = "";
+ ctx->server_hostname = ses->server->hostname;
ctx->username = ses->user_name;
ctx->password = ses->password;
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 399185ca7cac..72903265b170 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -411,14 +411,23 @@ skip_sess_setup:
if (!rc &&
(server->capabilities & SMB2_GLOBAL_CAP_MULTI_CHANNEL) &&
server->ops->query_server_interfaces) {
- mutex_unlock(&ses->session_mutex);
-
/*
- * query server network interfaces, in case they change
+ * query server network interfaces, in case they change.
+ * Also mark the session as pending this update while the query
+ * is in progress. This will be used to avoid calling
+ * smb2_reconnect recursively.
*/
+ ses->flags |= CIFS_SES_FLAGS_PENDING_QUERY_INTERFACES;
xid = get_xid();
rc = server->ops->query_server_interfaces(xid, tcon, false);
free_xid(xid);
+ ses->flags &= ~CIFS_SES_FLAGS_PENDING_QUERY_INTERFACES;
+
+ /* regardless of rc value, setup polling */
+ queue_delayed_work(cifsiod_wq, &tcon->query_interfaces,
+ (SMB_INTERFACE_POLL_INTERVAL * HZ));
+
+ mutex_unlock(&ses->session_mutex);
if (rc == -EOPNOTSUPP && ses->chan_count > 1) {
/*
@@ -438,11 +447,8 @@ skip_sess_setup:
if (ses->chan_max > ses->chan_count &&
ses->iface_count &&
!SERVER_IS_CHAN(server)) {
- if (ses->chan_count == 1) {
+ if (ses->chan_count == 1)
cifs_server_dbg(VFS, "supports multichannel now\n");
- queue_delayed_work(cifsiod_wq, &tcon->query_interfaces,
- (SMB_INTERFACE_POLL_INTERVAL * HZ));
- }
cifs_try_adding_channels(ses);
}
@@ -560,11 +566,18 @@ static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon,
struct TCP_Server_Info *server,
void **request_buf, unsigned int *total_len)
{
- /* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */
- if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) {
+ /*
+ * Skip reconnect in one of the following cases:
+ * 1. For FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs
+ * 2. For FSCTL_QUERY_NETWORK_INTERFACE_INFO IOCTL when called from
+ * smb2_reconnect (indicated by CIFS_SES_FLAG_SCALE_CHANNELS ses flag)
+ */
+ if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO ||
+ (opcode == FSCTL_QUERY_NETWORK_INTERFACE_INFO &&
+ (tcon->ses->flags & CIFS_SES_FLAGS_PENDING_QUERY_INTERFACES)))
return __smb2_plain_req_init(SMB2_IOCTL, tcon, server,
request_buf, total_len);
- }
+
return smb2_plain_req_init(SMB2_IOCTL, tcon, server,
request_buf, total_len);
}
diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c
index b0b7254661e9..9d8be034f103 100644
--- a/fs/smb/client/smbdirect.c
+++ b/fs/smb/client/smbdirect.c
@@ -2552,13 +2552,14 @@ static ssize_t smb_extract_folioq_to_rdma(struct iov_iter *iter,
size_t fsize = folioq_folio_size(folioq, slot);
if (offset < fsize) {
- size_t part = umin(maxsize - ret, fsize - offset);
+ size_t part = umin(maxsize, fsize - offset);
if (!smb_set_sge(rdma, folio_page(folio, 0), offset, part))
return -EIO;
offset += part;
ret += part;
+ maxsize -= part;
}
if (offset >= fsize) {
@@ -2573,7 +2574,7 @@ static ssize_t smb_extract_folioq_to_rdma(struct iov_iter *iter,
slot = 0;
}
}
- } while (rdma->nr_sge < rdma->max_sge || maxsize > 0);
+ } while (rdma->nr_sge < rdma->max_sge && maxsize > 0);
iter->folioq = folioq;
iter->folioq_slot = slot;
diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c
index 266af17aa7d9..191783f553ce 100644
--- a/fs/smb/client/transport.c
+++ b/fs/smb/client/transport.c
@@ -1018,14 +1018,16 @@ struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses)
uint index = 0;
unsigned int min_in_flight = UINT_MAX, max_in_flight = 0;
struct TCP_Server_Info *server = NULL;
- int i;
+ int i, start, cur;
if (!ses)
return NULL;
spin_lock(&ses->chan_lock);
+ start = atomic_inc_return(&ses->chan_seq);
for (i = 0; i < ses->chan_count; i++) {
- server = ses->chans[i].server;
+ cur = (start + i) % ses->chan_count;
+ server = ses->chans[cur].server;
if (!server || server->terminate)
continue;
@@ -1042,17 +1044,15 @@ struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses)
*/
if (server->in_flight < min_in_flight) {
min_in_flight = server->in_flight;
- index = i;
+ index = cur;
}
if (server->in_flight > max_in_flight)
max_in_flight = server->in_flight;
}
/* if all channels are equally loaded, fall back to round-robin */
- if (min_in_flight == max_in_flight) {
- index = (uint)atomic_inc_return(&ses->chan_seq);
- index %= ses->chan_count;
- }
+ if (min_in_flight == max_in_flight)
+ index = (uint)start % ses->chan_count;
server = ses->chans[index].server;
spin_unlock(&ses->chan_lock);
diff --git a/fs/smb/server/connection.c b/fs/smb/server/connection.c
index 83764c230e9d..3f04a2977ba8 100644
--- a/fs/smb/server/connection.c
+++ b/fs/smb/server/connection.c
@@ -40,7 +40,7 @@ void ksmbd_conn_free(struct ksmbd_conn *conn)
kvfree(conn->request_buf);
kfree(conn->preauth_info);
if (atomic_dec_and_test(&conn->refcnt)) {
- ksmbd_free_transport(conn->transport);
+ conn->transport->ops->free_transport(conn->transport);
kfree(conn);
}
}
diff --git a/fs/smb/server/connection.h b/fs/smb/server/connection.h
index 14620e147dda..572102098c10 100644
--- a/fs/smb/server/connection.h
+++ b/fs/smb/server/connection.h
@@ -132,6 +132,7 @@ struct ksmbd_transport_ops {
void *buf, unsigned int len,
struct smb2_buffer_desc_v1 *desc,
unsigned int desc_len);
+ void (*free_transport)(struct ksmbd_transport *kt);
};
struct ksmbd_transport {
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index f2a2be8467c6..c6b990c93bfa 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -1607,17 +1607,18 @@ static int krb5_authenticate(struct ksmbd_work *work,
out_len = work->response_sz -
(le16_to_cpu(rsp->SecurityBufferOffset) + 4);
- /* Check previous session */
- prev_sess_id = le64_to_cpu(req->PreviousSessionId);
- if (prev_sess_id && prev_sess_id != sess->id)
- destroy_previous_session(conn, sess->user, prev_sess_id);
-
retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
out_blob, &out_len);
if (retval) {
ksmbd_debug(SMB, "krb5 authentication failed\n");
return -EINVAL;
}
+
+ /* Check previous session */
+ prev_sess_id = le64_to_cpu(req->PreviousSessionId);
+ if (prev_sess_id && prev_sess_id != sess->id)
+ destroy_previous_session(conn, sess->user, prev_sess_id);
+
rsp->SecurityBufferLength = cpu_to_le16(out_len);
if ((conn->sign || server_conf.enforced_signing) ||
diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c
index 4998df04ab95..64a428a06ace 100644
--- a/fs/smb/server/transport_rdma.c
+++ b/fs/smb/server/transport_rdma.c
@@ -159,7 +159,8 @@ struct smb_direct_transport {
};
#define KSMBD_TRANS(t) ((struct ksmbd_transport *)&((t)->transport))
-
+#define SMBD_TRANS(t) ((struct smb_direct_transport *)container_of(t, \
+ struct smb_direct_transport, transport))
enum {
SMB_DIRECT_MSG_NEGOTIATE_REQ = 0,
SMB_DIRECT_MSG_DATA_TRANSFER
@@ -410,6 +411,11 @@ err:
return NULL;
}
+static void smb_direct_free_transport(struct ksmbd_transport *kt)
+{
+ kfree(SMBD_TRANS(kt));
+}
+
static void free_transport(struct smb_direct_transport *t)
{
struct smb_direct_recvmsg *recvmsg;
@@ -455,7 +461,6 @@ static void free_transport(struct smb_direct_transport *t)
smb_direct_destroy_pools(t);
ksmbd_conn_free(KSMBD_TRANS(t)->conn);
- kfree(t);
}
static struct smb_direct_sendmsg
@@ -2281,4 +2286,5 @@ static const struct ksmbd_transport_ops ksmbd_smb_direct_transport_ops = {
.read = smb_direct_read,
.rdma_read = smb_direct_rdma_read,
.rdma_write = smb_direct_rdma_write,
+ .free_transport = smb_direct_free_transport,
};
diff --git a/fs/smb/server/transport_tcp.c b/fs/smb/server/transport_tcp.c
index abedf510899a..4e9f98db9ff4 100644
--- a/fs/smb/server/transport_tcp.c
+++ b/fs/smb/server/transport_tcp.c
@@ -93,7 +93,7 @@ static struct tcp_transport *alloc_transport(struct socket *client_sk)
return t;
}
-void ksmbd_free_transport(struct ksmbd_transport *kt)
+static void ksmbd_tcp_free_transport(struct ksmbd_transport *kt)
{
struct tcp_transport *t = TCP_TRANS(kt);
@@ -656,4 +656,5 @@ static const struct ksmbd_transport_ops ksmbd_tcp_transport_ops = {
.read = ksmbd_tcp_read,
.writev = ksmbd_tcp_writev,
.disconnect = ksmbd_tcp_disconnect,
+ .free_transport = ksmbd_tcp_free_transport,
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-07-02 23:30:28 +0300