---

yaml --- r: 276470 b: refs/heads/master c: fef58a6 h: refs/heads/master v: v3
git-mirror · Dec 6, 2011 · 2939848 · 2939848
1 parent 9ed2400
commit 2939848
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6fd126ffebef3897d8fca98644a9fd1cc5c7a5e3
+refs/heads/master: fef58a6096770ed6ab49103a430cc755254a74d9
diff --git a/trunk/drivers/target/target_core_transport.c b/trunk/drivers/target/target_core_transport.c
@@ -3411,6 +3411,18 @@ int transport_generic_map_mem_to_cmd(
 
 	if ((cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) ||
 	    (cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB)) {
+		/*
+		 * Reject SCSI data overflow with map_mem_to_cmd() as incoming
+		 * scatterlists already have been set to follow what the fabric
+		 * passes for the original expected data transfer length.
+		 */
+		if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+			pr_warn("Rejecting SCSI DATA overflow for fabric using"
+				" SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC\n");
+			cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+			cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
+			return -EINVAL;
+		}
 
 		cmd->t_data_sg = sgl;
 		cmd->t_data_nents = sgl_count;