[PATCH v2 2/3] nfsd: Avoid some useless tests

From: Christophe JAILLET
Date: Thu Sep 01 2022 - 01:27:22 EST


memdup_user() can't return NULL, so there is no point for checking for it.

Simplify some tests accordingly.

Suggested-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
fs/nfsd/nfs4recover.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 248ff9f4141c..2968cf604e3b 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -807,7 +807,7 @@ __cld_pipe_inprogress_downcall(const struct cld_msg_v2 __user *cmsg,
if (get_user(namelen, &ci->cc_name.cn_len))
return -EFAULT;
name.data = memdup_user(&ci->cc_name.cn_id, namelen);
- if (IS_ERR_OR_NULL(name.data))
+ if (IS_ERR(name.data))
return -EFAULT;
name.len = namelen;
get_user(princhashlen, &ci->cc_princhash.cp_len);
@@ -815,7 +815,7 @@ __cld_pipe_inprogress_downcall(const struct cld_msg_v2 __user *cmsg,
princhash.data = memdup_user(
&ci->cc_princhash.cp_data,
princhashlen);
- if (IS_ERR_OR_NULL(princhash.data)) {
+ if (IS_ERR(princhash.data)) {
kfree(name.data);
return -EFAULT;
}
@@ -829,7 +829,7 @@ __cld_pipe_inprogress_downcall(const struct cld_msg_v2 __user *cmsg,
if (get_user(namelen, &cnm->cn_len))
return -EFAULT;
name.data = memdup_user(&cnm->cn_id, namelen);
- if (IS_ERR_OR_NULL(name.data))
+ if (IS_ERR(name.data))
return -EFAULT;
name.len = namelen;
}
--
2.34.1