scsi: logging: Fix scsi_logging_level bounds

Bound scsi_logging_level sysctl writings between SYSCTL_ZERO and
SYSCTL_INT_MAX.

The proc_handler has thus been updated to proc_dointvec_minmax.

Signed-off-by: Nicolas Bouchinet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Joel Granados <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: nbouchinet-anssi

drivers/scsi/scsi_sysctl.c

@@ -17,7 +17,9 @@ static const struct ctl_table scsi_table[] = {
 	  .data		= &scsi_logging_level,
 	  .maxlen	= sizeof(scsi_logging_level),
 	  .mode		= 0644,
-	  .proc_handler	= proc_dointvec },
+	  .proc_handler	= proc_dointvec_minmax,
+	  .extra1	= SYSCTL_ZERO,
+	  .extra2	= SYSCTL_INT_MAX },
 };
 
 static struct ctl_table_header *scsi_table_header;