diff options
| author | Zongmin Zhou <zhouzongmin@kylinos.cn> | 2023-11-20 23:48:17 +0900 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2023-11-23 20:50:44 -0600 |
| commit | 90044481e7cca6cb3125b3906544954a25f1309f (patch) | |
| tree | 8c4048dfa62c8303df82003d192519b8a7859a57 | |
| parent | 98b1cc82c4affc16f5598d4fa14b1858671b2263 (diff) | |
ksmbd: prevent memory leak on error return
When allocated memory for 'new' failed,just return
will cause memory leak of 'ar'.
Fixes: 1819a9042999 ("ksmbd: reorganize ksmbd_iov_pin_rsp()")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202311031837.H3yo7JVl-lkp@intel.com/
Signed-off-by: Zongmin Zhou<zhouzongmin@kylinos.cn>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
| -rw-r--r-- | fs/smb/server/ksmbd_work.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/smb/server/ksmbd_work.c b/fs/smb/server/ksmbd_work.c index a2ed441e837a..2510b9f3c8c1 100644 --- a/fs/smb/server/ksmbd_work.c +++ b/fs/smb/server/ksmbd_work.c @@ -106,7 +106,7 @@ static inline void __ksmbd_iov_pin(struct ksmbd_work *work, void *ib, static int __ksmbd_iov_pin_rsp(struct ksmbd_work *work, void *ib, int len, void *aux_buf, unsigned int aux_size) { - struct aux_read *ar; + struct aux_read *ar = NULL; int need_iov_cnt = 1; if (aux_size) { @@ -123,8 +123,11 @@ static int __ksmbd_iov_pin_rsp(struct ksmbd_work *work, void *ib, int len, new = krealloc(work->iov, sizeof(struct kvec) * work->iov_alloc_cnt, GFP_KERNEL | __GFP_ZERO); - if (!new) + if (!new) { + kfree(ar); + work->iov_alloc_cnt -= 4; return -ENOMEM; + } work->iov = new; } |