diff options
| author | Namjae Jeon <linkinjeon@kernel.org> | 2021-12-31 09:26:25 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 11:02:53 +0100 |
| commit | d7004f0cc4a739e315f620773392b8d867993fe8 (patch) | |
| tree | 69f80c30dc27b25c3951f38387abac407e64175d /fs/ksmbd/smb2misc.c | |
| parent | 0aadd32bebc9506b1fc88ab43c6174c2e371ad7b (diff) | |
ksmbd: limits exceeding the maximum allowable outstanding requests
commit b589f5db6d4af8f14d70e31e1276b4c017668a26 upstream.
If the client ignores the CreditResponse received from the server and
continues to send the request, ksmbd limits the requests if it exceeds
smb2 max credits.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ksmbd/smb2misc.c')
| -rw-r--r-- | fs/ksmbd/smb2misc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ksmbd/smb2misc.c b/fs/ksmbd/smb2misc.c index e4a28eae51b2..cc1c38686ecd 100644 --- a/fs/ksmbd/smb2misc.c +++ b/fs/ksmbd/smb2misc.c @@ -338,7 +338,16 @@ static int smb2_validate_credit_charge(struct ksmbd_conn *conn, credit_charge, conn->total_credits); ret = 1; } + + if ((u64)conn->outstanding_credits + credit_charge > conn->vals->max_credits) { + ksmbd_debug(SMB, "Limits exceeding the maximum allowable outstanding requests, given : %u, pending : %u\n", + credit_charge, conn->outstanding_credits); + ret = 1; + } else + conn->outstanding_credits += credit_charge; + spin_unlock(&conn->credits_lock); + return ret; } |