diff options
| author | Namjae Jeon <linkinjeon@kernel.org> | 2025-05-20 09:25:03 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-04 14:43:54 +0200 |
| commit | 334da674b25fdb7a1a4d4b89dcd7795144fc7e11 (patch) | |
| tree | cdf52256ead17b6cfb86eea1fc7d2f9922b41a5a | |
| parent | 4a72fa2f59874e6df3360c88bb5e992b7cbbfcc5 (diff) | |
ksmbd: use list_first_entry_or_null for opinfo_get_list()
[ Upstream commit 10379171f346e6f61d30d9949500a8de4336444a ]
The list_first_entry() macro never returns NULL. If the list is
empty then it returns an invalid pointer. Use list_first_entry_or_null()
to check if the list is empty.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202505080231.7OXwq4Te-lkp@intel.com/
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/smb/server/oplock.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c index 03f606afad93..d7a8a580d013 100644 --- a/fs/smb/server/oplock.c +++ b/fs/smb/server/oplock.c @@ -146,12 +146,9 @@ static struct oplock_info *opinfo_get_list(struct ksmbd_inode *ci) { struct oplock_info *opinfo; - if (list_empty(&ci->m_op_list)) - return NULL; - down_read(&ci->m_lock); - opinfo = list_first_entry(&ci->m_op_list, struct oplock_info, - op_entry); + opinfo = list_first_entry_or_null(&ci->m_op_list, struct oplock_info, + op_entry); if (opinfo) { if (opinfo->conn == NULL || !atomic_inc_not_zero(&opinfo->refcount)) |