5.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ekaterina Esina <eesina@xxxxxxxxxxxxx>
[ Upstream commit 181724fc72486dec2bec8803459be05b5162aaa8 ]
Remove extra check after condition, add check after generating key
for encryption. The check is needed to return non zero rc before
rewriting it with generating key for decryption.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Reviewed-by: Paulo Alcantara (SUSE) <pc@xxxxxxxxxxxxx>
Fixes: d70e9fa55884 ("cifs: try opening channels after mounting")
Signed-off-by: Ekaterina Esina <eesina@xxxxxxxxxxxxx>
Co-developed-by: Anastasia Belova <abelova@xxxxxxxxxxxxx>
Signed-off-by: Anastasia Belova <abelova@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/cifs/smb2transport.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index e6fa76ab70be7..d659eb70df76d 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -433,6 +433,8 @@ generate_smb3signingkey(struct cifs_ses *ses,
ptriplet->encryption.context,
ses->smb3encryptionkey,
SMB3_ENC_DEC_KEY_SIZE);
+ if (rc)
+ return rc;
rc = generate_key(ses, ptriplet->decryption.label,
ptriplet->decryption.context,
ses->smb3decryptionkey,
@@ -441,9 +443,6 @@ generate_smb3signingkey(struct cifs_ses *ses,
return rc;
}
- if (rc)
- return rc;
-
#ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS
cifs_dbg(VFS, "%s: dumping generated AES session keys\n", __func__);
/*
--
2.42.0
