diff options
| author | Enzo Matsumiya <ematsumiya@suse.de> | 2022-09-17 01:57:05 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-09-26 00:01:50 +0200 |
| commit | 09a1f9a168ae1f69f701689429871793174417d2 (patch) | |
| tree | 28bed485e4085f75631588ecd27bc8429fb8f9a4 /fs/cifs | |
| parent | MAINTAINERS: Add Tom Talpey as cifs.ko reviewer (diff) | |
| download | linux-09a1f9a168ae1f69f701689429871793174417d2.tar.xz linux-09a1f9a168ae1f69f701689429871793174417d2.zip | |
cifs: return correct error in ->calc_signature()
If an error happens while getting the key or session in the
->calc_signature implementations, 0 (success) is returned. Fix it by
returning a proper error code.
Since it seems to be highly unlikely to happen wrap the rc check in
unlikely() too.
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Fixes: 32811d242ff6 ("cifs: Start using per session key for smb2/3 for signature generation")
Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/smb2transport.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index 1a5fc3314dbf..4640fc4a8b13 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -225,9 +225,9 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, struct smb_rqst drqst; ses = smb2_find_smb_ses(server, le64_to_cpu(shdr->SessionId)); - if (!ses) { + if (unlikely(!ses)) { cifs_server_dbg(VFS, "%s: Could not find session\n", __func__); - return 0; + return -ENOENT; } memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE); @@ -557,8 +557,10 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, u8 key[SMB3_SIGN_KEY_SIZE]; rc = smb2_get_sign_key(le64_to_cpu(shdr->SessionId), server, key); - if (rc) - return 0; + if (unlikely(rc)) { + cifs_server_dbg(VFS, "%s: Could not get signing key\n", __func__); + return rc; + } if (allocate_crypto) { rc = cifs_alloc_hash("cmac(aes)", &hash, &sdesc); |