Fixed kernel loops in leading to slower performance in --increment mode

docs/changes.txt

@@ -13,6 +13,7 @@
 
 - Fixed infinite loop when using --loopback in case all hashes have been cracked
 - Fixed double fclose() using AMDGPU-Pro on sysfs compatible platform: Leading to segfault
+- Fixed kernel loops in leading to slower performance in --increment mode 
 - Removed access to readlink() on FreeBSD: Causes problem building hashcat
 
 ##

include/types.h

@@ -861,6 +861,8 @@ typedef struct hc_device_param
   u32     kernel_accel;
   u32     kernel_loops_min;
   u32     kernel_loops_max;
+  u32     kernel_loops_min_sav; // the _sav are required because each -i iteration
+  u32     kernel_loops_max_sav; // needs to recalculate the kernel_loops_min/max based on the current amplifier count
   u32     kernel_accel_min;
   u32     kernel_accel_max;
   u32     kernel_power;

src/opencl.c

@@ -3076,6 +3076,9 @@ void opencl_ctx_devices_kernel_loops (hashcat_ctx_t *hashcat_ctx)
 
     if (device_param->skipped == true) continue;
 
+    device_param->kernel_loops_min = device_param->kernel_loops_min_sav;
+    device_param->kernel_loops_max = device_param->kernel_loops_max_sav;
+
     if (device_param->kernel_loops_min < device_param->kernel_loops_max)
     {
       u32 innerloop_cnt = 0;
@@ -3320,7 +3323,6 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
       device_param->kernel_loops_max = user_options->kernel_loops;
     }
 
-
     /**
      * device properties
      */
@@ -3526,6 +3528,9 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
       device_param->kernel_loops_max = kernel_loops_fixed;
     }
 
+    device_param->kernel_loops_min_sav = device_param->kernel_loops_min;
+    device_param->kernel_loops_max_sav = device_param->kernel_loops_max;
+
     u32 kernel_accel_min = device_param->kernel_accel_min;
     u32 kernel_accel_max = device_param->kernel_accel_max;