ksmbd: reject blocking compound lock requests

Clients set SMB2_LOCKFLAG_FAIL_IMMEDIATELY when a LOCK request contains
multiple lock elements, and servers reject requests that omit it.
Accepting such a request can leave earlier elements locked while a later
element waits asynchronously, enabling prolonged partial lock ownership
and avoidable deadlocks.

Return STATUS_INVALID_PARAMETER before processing any element when a
multi-element lock request contains a blocking lock. Unlock arrays remain
unaffected.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions