ksmbd: remove unneeded check_context_err
Coverity Scan seems to report false alarm.
*** CID 1505930: (USE_AFTER_FREE)
/fs/ksmbd/smb2pdu.c: 2527 in smb2_open()
>>> CID 1505930: (USE_AFTER_FREE)
>>> Passing freed pointer "context" as an argument to
>>> "check_context_err".
This patch remove unneeded check_context_err to make coverity scan
happy.
Reported-by: Coverity Scan <scan-admin@coverity.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 2e266a9..319e07a 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -2126,21 +2126,6 @@ static int smb2_set_ea(struct smb2_ea_info *eabuf, struct path *path)
return rc;
}
-static inline int check_context_err(void *ctx, char *str)
-{
- int err;
-
- err = PTR_ERR(ctx);
- ksmbd_debug(SMB, "find context %s err %d\n", str, err ? err : -ENOENT);
-
- if (err == -EINVAL) {
- pr_err("bad name length\n");
- return err;
- }
-
- return 0;
-}
-
static noinline int smb2_set_stream_name_xattr(struct path *path,
struct ksmbd_file *fp,
char *stream_name, int s_type)
@@ -2523,11 +2508,10 @@ int smb2_open(struct ksmbd_work *work)
if (req->CreateContextsOffset) {
/* Parse non-durable handle create contexts */
context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
- if (IS_ERR_OR_NULL(context)) {
- rc = check_context_err(context, SMB2_CREATE_EA_BUFFER);
- if (rc < 0)
- goto err_out1;
- } else {
+ if (IS_ERR(context)) {
+ rc = PTR_ERR(context);
+ goto err_out1;
+ } else if (context) {
ea_buf = (struct create_ea_buf_req *)context;
if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
rsp->hdr.Status = STATUS_ACCESS_DENIED;
@@ -2538,12 +2522,10 @@ int smb2_open(struct ksmbd_work *work)
context = smb2_find_context_vals(req,
SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
- if (IS_ERR_OR_NULL(context)) {
- rc = check_context_err(context,
- SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
- if (rc < 0)
- goto err_out1;
- } else {
+ if (IS_ERR(context)) {
+ rc = PTR_ERR(context);
+ goto err_out1;
+ } else if (context) {
ksmbd_debug(SMB,
"get query maximal access context\n");
maximal_access_ctxt = 1;
@@ -2551,12 +2533,10 @@ int smb2_open(struct ksmbd_work *work)
context = smb2_find_context_vals(req,
SMB2_CREATE_TIMEWARP_REQUEST);
- if (IS_ERR_OR_NULL(context)) {
- rc = check_context_err(context,
- SMB2_CREATE_TIMEWARP_REQUEST);
- if (rc < 0)
- goto err_out1;
- } else {
+ if (IS_ERR(context)) {
+ rc = PTR_ERR(context);
+ goto err_out1;
+ } else if (context) {
ksmbd_debug(SMB, "get timewarp context\n");
rc = -EBADF;
goto err_out1;
@@ -2565,12 +2545,10 @@ int smb2_open(struct ksmbd_work *work)
if (tcon->posix_extensions) {
context = smb2_find_context_vals(req,
SMB2_CREATE_TAG_POSIX);
- if (IS_ERR_OR_NULL(context)) {
- rc = check_context_err(context,
- SMB2_CREATE_TAG_POSIX);
- if (rc < 0)
- goto err_out1;
- } else {
+ if (IS_ERR(context)) {
+ rc = PTR_ERR(context);
+ goto err_out1;
+ } else if (context) {
struct create_posix *posix =
(struct create_posix *)context;
ksmbd_debug(SMB, "get posix context\n");
@@ -2968,12 +2946,10 @@ int smb2_open(struct ksmbd_work *work)
az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
SMB2_CREATE_ALLOCATION_SIZE);
- if (IS_ERR_OR_NULL(az_req)) {
- rc = check_context_err(az_req,
- SMB2_CREATE_ALLOCATION_SIZE);
- if (rc < 0)
- goto err_out;
- } else {
+ if (IS_ERR(az_req)) {
+ rc = PTR_ERR(az_req);
+ goto err_out;
+ } else if (az_req) {
loff_t alloc_size = le64_to_cpu(az_req->AllocationSize);
int err;
@@ -2990,11 +2966,10 @@ int smb2_open(struct ksmbd_work *work)
}
context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
- if (IS_ERR_OR_NULL(context)) {
- rc = check_context_err(context, SMB2_CREATE_QUERY_ON_DISK_ID);
- if (rc < 0)
- goto err_out;
- } else {
+ if (IS_ERR(context)) {
+ rc = PTR_ERR(context);
+ goto err_out;
+ } else if (context) {
ksmbd_debug(SMB, "get query on disk id context\n");
query_disk_id = 1;
}
