diff --git a/docs/license.txt b/docs/license.txt
index 5a8e6bf7e..47c3bf70d 100644
--- a/docs/license.txt
+++ b/docs/license.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2020 Jens Steube
+Copyright (c) 2015-2021 Jens Steube
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/modules/module_01500.c b/src/modules/module_01500.c
index 8373f2642..d7e5d5787 100644
--- a/src/modules/module_01500.c
+++ b/src/modules/module_01500.c
@@ -43,6 +43,17 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 int module_build_plain_postprocess (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const void *tmps, const u32 *src_buf, MAYBE_UNUSED const size_t src_sz, MAYBE_UNUSED const int src_len, u32 *dst_buf, MAYBE_UNUSED const size_t dst_sz)
 {
   u8 *ptr_src = (u8 *) src_buf;
@@ -333,6 +344,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_02100.c b/src/modules/module_02100.c
index 371d4a14e..495f3239b 100644
--- a/src/modules/module_02100.c
+++ b/src/modules/module_02100.c
@@ -54,6 +54,17 @@ typedef struct dcc2_tmp
 
 static const char *SIGNATURE_DCC2 = "$DCC2$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): self-test failed.
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (dcc2_tmp_t);
@@ -226,6 +237,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_03710.c b/src/modules/module_03710.c
index 7c4c2d196..23c73e993 100644
--- a/src/modules/module_03710.c
+++ b/src/modules/module_03710.c
@@ -55,7 +55,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_03711.c b/src/modules/module_03711.c
index cdaea0cd5..70a69e411 100644
--- a/src/modules/module_03711.c
+++ b/src/modules/module_03711.c
@@ -57,7 +57,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_04010.c b/src/modules/module_04010.c
index 91c1f3832..008f7b5c1 100644
--- a/src/modules/module_04010.c
+++ b/src/modules/module_04010.c
@@ -55,7 +55,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: self-test failure.
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_04110.c b/src/modules/module_04110.c
index 2f6f89855..43b48f0f4 100644
--- a/src/modules/module_04110.c
+++ b/src/modules/module_04110.c
@@ -53,7 +53,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: self-test failure.
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_04510.c b/src/modules/module_04510.c
index f6047bc90..0e2440b1b 100644
--- a/src/modules/module_04510.c
+++ b/src/modules/module_04510.c
@@ -46,6 +46,17 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -230,6 +241,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_06231.c b/src/modules/module_06231.c
index 05d0a85a2..417938189 100644
--- a/src/modules/module_06231.c
+++ b/src/modules/module_06231.c
@@ -70,6 +70,17 @@ typedef struct tc
 static const int   ROUNDS_TRUECRYPT_1K         = 1000;
 static const float MIN_SUFFICIENT_ENTROPY_FILE = 7.0f;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 bool module_potfile_disable (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const bool potfile_disable = true;
@@ -295,6 +306,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_06232.c b/src/modules/module_06232.c
index d2c51802b..f3eeb93be 100644
--- a/src/modules/module_06232.c
+++ b/src/modules/module_06232.c
@@ -70,6 +70,17 @@ typedef struct tc
 static const int   ROUNDS_TRUECRYPT_1K         = 1000;
 static const float MIN_SUFFICIENT_ENTROPY_FILE = 7.0f;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 bool module_potfile_disable (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const bool potfile_disable = true;
@@ -295,6 +306,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_06233.c b/src/modules/module_06233.c
index c75c66612..fb3bc153c 100644
--- a/src/modules/module_06233.c
+++ b/src/modules/module_06233.c
@@ -70,6 +70,17 @@ typedef struct tc
 static const int   ROUNDS_TRUECRYPT_1K         = 1000;
 static const float MIN_SUFFICIENT_ENTROPY_FILE = 7.0f;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 bool module_potfile_disable (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const bool potfile_disable = true;
@@ -295,6 +306,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_06500.c b/src/modules/module_06500.c
index 3babe7584..4886afc1e 100644
--- a/src/modules/module_06500.c
+++ b/src/modules/module_06500.c
@@ -54,6 +54,17 @@ typedef struct sha512aix_tmp
 
 static const char *SIGNATURE_SHA512AIX = "{ssha512}";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 static void sha512aix_decode (u8 digest[64], const u8 buf[86])
 {
   int l;
@@ -410,17 +421,6 @@ static void sha512aix_encode (const u8 digest[64], u8 buf[86])
   buf[85] = int_to_itoa64 (l & 0x3f); //l >>= 6;
 }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    return true;
-  }
-
-  return false;
-}
-
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (sha512aix_tmp_t);
diff --git a/src/modules/module_07100.c b/src/modules/module_07100.c
index 6cd715cf3..0c4df6387 100644
--- a/src/modules/module_07100.c
+++ b/src/modules/module_07100.c
@@ -63,7 +63,7 @@ static const char *SIGNATURE_SHA512MACOS = "$ml$";
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_07200.c b/src/modules/module_07200.c
index ed5d1d1d9..08856c5f8 100644
--- a/src/modules/module_07200.c
+++ b/src/modules/module_07200.c
@@ -62,7 +62,7 @@ static const char *SIGNATURE_SHA512GRUB = "grub.pbkdf2.sha512.";
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_07500.c b/src/modules/module_07500.c
index 540a1a101..49cf81081 100644
--- a/src/modules/module_07500.c
+++ b/src/modules/module_07500.c
@@ -91,15 +91,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-18.50-708488-ubuntu-18.04: Segmentation fault
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    if ((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0)
-    {
-      return true;
-    }
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_07900.c b/src/modules/module_07900.c
index 89424fa28..31b78a6ed 100644
--- a/src/modules/module_07900.c
+++ b/src/modules/module_07900.c
@@ -61,6 +61,12 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_08000.c b/src/modules/module_08000.c
index f897ddf14..65aa287f8 100644
--- a/src/modules/module_08000.c
+++ b/src/modules/module_08000.c
@@ -75,17 +75,6 @@ char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAY
   return jit_build_options;
 }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // self-test failed
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU))
-  {
-    return true;
-  }
-
-  return false;
-}
-
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -244,6 +233,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_08200.c b/src/modules/module_08200.c
index 7116cb99d..c92e36120 100644
--- a/src/modules/module_08200.c
+++ b/src/modules/module_08200.c
@@ -60,7 +60,7 @@ typedef struct pbkdf2_sha512_tmp
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_08500.c b/src/modules/module_08500.c
index 00243f12b..7b4518174 100644
--- a/src/modules/module_08500.c
+++ b/src/modules/module_08500.c
@@ -44,6 +44,17 @@ const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig,
 
 static const char *SIGNATURE_RACF = "$racf$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
   char *jit_build_options = NULL;
@@ -268,6 +279,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_08900.c b/src/modules/module_08900.c
index 6e12db408..03de4b089 100644
--- a/src/modules/module_08900.c
+++ b/src/modules/module_08900.c
@@ -50,6 +50,23 @@ static const u64 SCRYPT_N = 16384;
 static const u64 SCRYPT_R = 8;
 static const u64 SCRYPT_P = 1;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  // w_opencl_runtime_p_2021.2.0.616.exe: password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u32 module_kernel_loops_min (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 kernel_loops_min = 1;
@@ -414,6 +431,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = module_warmup_disable;
 }
diff --git a/src/modules/module_09000.c b/src/modules/module_09000.c
index e2ad66bc5..e747faaac 100644
--- a/src/modules/module_09000.c
+++ b/src/modules/module_09000.c
@@ -139,17 +139,6 @@ bool module_potfile_disable (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_
   return potfile_disable;
 }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-skylake: Segmentation fault
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_POCL)
-  {
-    return true;
-  }
-
-  return false;
-}
-
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -257,6 +246,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_09300.c b/src/modules/module_09300.c
index 19b3456aa..5ae4771f8 100644
--- a/src/modules/module_09300.c
+++ b/src/modules/module_09300.c
@@ -50,6 +50,17 @@ static const u64 SCRYPT_N = 16384;
 static const u64 SCRYPT_R = 1;
 static const u64 SCRYPT_P = 1;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 5
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u32 module_kernel_loops_min (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u32 kernel_loops_min = 1;
@@ -380,6 +391,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = module_warmup_disable;
 }
diff --git a/src/modules/module_09500.c b/src/modules/module_09500.c
index 1072db62e..88fca3aa8 100644
--- a/src/modules/module_09500.c
+++ b/src/modules/module_09500.c
@@ -68,6 +68,18 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_09600.c b/src/modules/module_09600.c
index ab8ad1cd3..f3e07641e 100644
--- a/src/modules/module_09600.c
+++ b/src/modules/module_09600.c
@@ -122,7 +122,13 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: self-test failure.
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_09800.c b/src/modules/module_09800.c
index b45a2a0c0..18244b801 100644
--- a/src/modules/module_09800.c
+++ b/src/modules/module_09800.c
@@ -87,17 +87,6 @@ u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED con
   return pw_max;
 }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-skylake: Segmentation fault
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_POCL)
-  {
-    return true;
-  }
-
-  return false;
-}
-
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -352,6 +341,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_11300.c b/src/modules/module_11300.c
index ed0f97c8f..f180cd088 100644
--- a/src/modules/module_11300.c
+++ b/src/modules/module_11300.c
@@ -67,7 +67,7 @@ static const char *SIGNATURE_BITCOIN_WALLET = "$bitcoin$";
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_11700.c b/src/modules/module_11700.c
index 416569b4b..fffbe2ddd 100644
--- a/src/modules/module_11700.c
+++ b/src/modules/module_11700.c
@@ -41,20 +41,6 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: CL_OUT_OF_RESOURCES
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    if ((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0)
-    {
-      return true;
-    }
-  }
-
-  return false;
-}
-
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -191,6 +177,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_11750.c b/src/modules/module_11750.c
index 2a817c785..5d962e3c1 100644
--- a/src/modules/module_11750.c
+++ b/src/modules/module_11750.c
@@ -52,7 +52,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_11760.c b/src/modules/module_11760.c
index 238822153..7f19b43e0 100644
--- a/src/modules/module_11760.c
+++ b/src/modules/module_11760.c
@@ -52,7 +52,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_11850.c b/src/modules/module_11850.c
index 184b98c1e..be61c1a3e 100644
--- a/src/modules/module_11850.c
+++ b/src/modules/module_11850.c
@@ -52,7 +52,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_11860.c b/src/modules/module_11860.c
index f200d94b7..00e96aa6e 100644
--- a/src/modules/module_11860.c
+++ b/src/modules/module_11860.c
@@ -52,7 +52,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_12100.c b/src/modules/module_12100.c
index 094af8a4a..84cd6a3e0 100644
--- a/src/modules/module_12100.c
+++ b/src/modules/module_12100.c
@@ -64,7 +64,7 @@ static const char *SIGNATURE_PBKDF2_SHA512 = "sha512";
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_12300.c b/src/modules/module_12300.c
index b040aff61..ef55ac3cb 100644
--- a/src/modules/module_12300.c
+++ b/src/modules/module_12300.c
@@ -65,7 +65,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_12500.c b/src/modules/module_12500.c
index 728b4ddbf..b421ab4b1 100644
--- a/src/modules/module_12500.c
+++ b/src/modules/module_12500.c
@@ -59,6 +59,17 @@ typedef struct rar3_tmp_optimized
 static const int   ROUNDS_RAR3    = 262144;
 static const char *SIGNATURE_RAR3 = "$RAR3$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const bool optimized_kernel = (hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL);
@@ -276,6 +287,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_13100.c b/src/modules/module_13100.c
index 741b06cb4..fad998501 100644
--- a/src/modules/module_13100.c
+++ b/src/modules/module_13100.c
@@ -84,15 +84,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: CL_OUT_OF_RESOURCES
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    if ((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0)
-    {
-      return true;
-    }
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_14600.c b/src/modules/module_14600.c
index 0ff26ac67..fe4e7eb88 100644
--- a/src/modules/module_14600.c
+++ b/src/modules/module_14600.c
@@ -179,6 +179,17 @@ typedef struct luks_tmp
 
 } luks_tmp_t;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u32 module_kernel_threads_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   // the module requires a lot of registers for key schedulers on _comp kernel.
@@ -676,6 +687,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_15300.c b/src/modules/module_15300.c
index 5bf9ca0dc..42feb4686 100644
--- a/src/modules/module_15300.c
+++ b/src/modules/module_15300.c
@@ -75,6 +75,23 @@ typedef struct dpapimk_tmp_v1
 
 static const char *SIGNATURE_DPAPIMK = "$DPAPImk$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): self-test failed.
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (dpapimk_tmp_v1_t);
@@ -442,6 +459,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_15700.c b/src/modules/module_15700.c
index 8616aa158..7ea3dffbb 100644
--- a/src/modules/module_15700.c
+++ b/src/modules/module_15700.c
@@ -223,6 +223,12 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // w_opencl_runtime_p_2021.2.0.616.exe: password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_15900.c b/src/modules/module_15900.c
index f00a99257..52341e6bc 100644
--- a/src/modules/module_15900.c
+++ b/src/modules/module_15900.c
@@ -87,6 +87,18 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_16000.c b/src/modules/module_16000.c
index bef431800..326258ae2 100644
--- a/src/modules/module_16000.c
+++ b/src/modules/module_16000.c
@@ -49,6 +49,12 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     return true;
   }
 
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_16600.c b/src/modules/module_16600.c
index 5ddf79347..0a9853449 100644
--- a/src/modules/module_16600.c
+++ b/src/modules/module_16600.c
@@ -65,6 +65,18 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_17200.c b/src/modules/module_17200.c
index 71a6f8b59..6d87da526 100644
--- a/src/modules/module_17200.c
+++ b/src/modules/module_17200.c
@@ -170,12 +170,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     return true;
   }
 
-  // hangs somewhere in zlib inflate
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_AMD)
-  {
-    return true;
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_17220.c b/src/modules/module_17220.c
index ccab3e096..9855a3ed6 100644
--- a/src/modules/module_17220.c
+++ b/src/modules/module_17220.c
@@ -170,12 +170,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     return true;
   }
 
-  // hangs somewhere in zlib inflate
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_AMD)
-  {
-    return true;
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_17225.c b/src/modules/module_17225.c
index 5c0482394..36394ac0b 100644
--- a/src/modules/module_17225.c
+++ b/src/modules/module_17225.c
@@ -170,12 +170,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     return true;
   }
 
-  // hangs somewhere in zlib inflate
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_AMD)
-  {
-    return true;
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_18100.c b/src/modules/module_18100.c
index 6aa672a38..4d1f5ca81 100644
--- a/src/modules/module_18100.c
+++ b/src/modules/module_18100.c
@@ -45,23 +45,9 @@ u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig,
 const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
 const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
 
-int module_build_plain_postprocess (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const void *tmps, const u32 *src_buf, MAYBE_UNUSED const size_t src_sz, MAYBE_UNUSED const int src_len, u32 *dst_buf, MAYBE_UNUSED const size_t dst_sz)
-{
-  return base32_encode (int_to_base32, (const u8 *) src_buf, src_len, (u8 *) dst_buf);
-}
-
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // AMD on Apple not affected
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
-  {
-    if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU))
-    {
-      return false;
-    }
-  }
-
-  // amdgpu-pro-18.50-708488-ubuntu-18.04: Segmentation fault
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
@@ -70,6 +56,11 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
   return false;
 }
 
+int module_build_plain_postprocess (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const void *tmps, const u32 *src_buf, MAYBE_UNUSED const size_t src_sz, MAYBE_UNUSED const int src_len, u32 *dst_buf, MAYBE_UNUSED const size_t dst_sz)
+{
+  return base32_encode (int_to_base32, (const u8 *) src_buf, src_len, (u8 *) dst_buf);
+}
+
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
diff --git a/src/modules/module_18200.c b/src/modules/module_18200.c
index 9dad5f075..7b789d635 100644
--- a/src/modules/module_18200.c
+++ b/src/modules/module_18200.c
@@ -109,15 +109,6 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: CL_OUT_OF_RESOURCES
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    if ((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0)
-    {
-      return true;
-    }
-  }
-
   return false;
 }
 
diff --git a/src/modules/module_18600.c b/src/modules/module_18600.c
index 2ba5e6c7c..c24ea37fe 100644
--- a/src/modules/module_18600.c
+++ b/src/modules/module_18600.c
@@ -141,17 +141,6 @@ u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED con
   return pw_max;
 }
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-skylake: self-test failed
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_POCL)
-  {
-    return true;
-  }
-
-  return false;
-}
-
 int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
 {
   u32 *digest = (u32 *) digest_buf;
@@ -409,6 +398,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_19500.c b/src/modules/module_19500.c
index e52e37e39..2a21d9fba 100644
--- a/src/modules/module_19500.c
+++ b/src/modules/module_19500.c
@@ -63,7 +63,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: self-test failure.
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_20011.c b/src/modules/module_20011.c
index e2915892b..80a0fab08 100644
--- a/src/modules/module_20011.c
+++ b/src/modules/module_20011.c
@@ -74,7 +74,13 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): self-test failed.
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_20012.c b/src/modules/module_20012.c
index 718faba29..a97a0bf57 100644
--- a/src/modules/module_20012.c
+++ b/src/modules/module_20012.c
@@ -74,7 +74,13 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): self-test failed.
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_20013.c b/src/modules/module_20013.c
index 39037b5c1..3b72ebfcf 100644
--- a/src/modules/module_20013.c
+++ b/src/modules/module_20013.c
@@ -74,7 +74,13 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): self-test failed.
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_20200.c b/src/modules/module_20200.c
index 5d3efc407..67299de8d 100644
--- a/src/modules/module_20200.c
+++ b/src/modules/module_20200.c
@@ -74,7 +74,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_21600.c b/src/modules/module_21600.c
index d02a3ed06..1ea3e7769 100644
--- a/src/modules/module_21600.c
+++ b/src/modules/module_21600.c
@@ -66,6 +66,12 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_21700.c b/src/modules/module_21700.c
index 36638220b..e61b0b05c 100644
--- a/src/modules/module_21700.c
+++ b/src/modules/module_21700.c
@@ -103,8 +103,8 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // self-test failed
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_AMD)
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
   }
diff --git a/src/modules/module_21800.c b/src/modules/module_21800.c
index 20c0e689c..ae0250125 100644
--- a/src/modules/module_21800.c
+++ b/src/modules/module_21800.c
@@ -102,8 +102,8 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // self-test failed
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_AMD)
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
   }
diff --git a/src/modules/module_22500.c b/src/modules/module_22500.c
index 636512258..81429e134 100644
--- a/src/modules/module_22500.c
+++ b/src/modules/module_22500.c
@@ -42,6 +42,29 @@ const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig,
 
 static const char *SIGNATURE_MULTIBIT = "$multibit$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const bool optimized_kernel = (hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL);
@@ -224,6 +247,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_22700.c b/src/modules/module_22700.c
index 683242115..8197410a2 100644
--- a/src/modules/module_22700.c
+++ b/src/modules/module_22700.c
@@ -59,6 +59,18 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     return true;
   }
 
+  // w_opencl_runtime_p_2021.2.0.616.exe: password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/src/modules/module_22911.c b/src/modules/module_22911.c
index 26e11c5bd..e7971ac2e 100644
--- a/src/modules/module_22911.c
+++ b/src/modules/module_22911.c
@@ -52,6 +52,17 @@ typedef struct pem
 
 static const char *SIGNATURE_SSHNG = "$sshng$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pem_t);
@@ -261,6 +272,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_22921.c b/src/modules/module_22921.c
index b6dc3c425..6239232e2 100644
--- a/src/modules/module_22921.c
+++ b/src/modules/module_22921.c
@@ -52,6 +52,17 @@ typedef struct pem
 
 static const char *SIGNATURE_SSHNG = "$sshng$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pem_t);
@@ -261,6 +272,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_22931.c b/src/modules/module_22931.c
index bb6d1a641..0fd1d88e3 100644
--- a/src/modules/module_22931.c
+++ b/src/modules/module_22931.c
@@ -52,6 +52,17 @@ typedef struct pem
 
 static const char *SIGNATURE_SSHNG = "$sshng$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pem_t);
@@ -265,6 +276,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_22941.c b/src/modules/module_22941.c
index 71743996c..d88a11d6f 100644
--- a/src/modules/module_22941.c
+++ b/src/modules/module_22941.c
@@ -52,6 +52,17 @@ typedef struct pem
 
 static const char *SIGNATURE_SSHNG = "$sshng$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pem_t);
@@ -265,6 +276,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_22951.c b/src/modules/module_22951.c
index 64e6a1fce..348fd4efd 100644
--- a/src/modules/module_22951.c
+++ b/src/modules/module_22951.c
@@ -52,6 +52,17 @@ typedef struct pem
 
 static const char *SIGNATURE_SSHNG = "$sshng$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr): password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (pem_t);
@@ -265,6 +276,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = MODULE_DEFAULT;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23100.c b/src/modules/module_23100.c
index 046ce0412..ad2981537 100644
--- a/src/modules/module_23100.c
+++ b/src/modules/module_23100.c
@@ -62,6 +62,17 @@ typedef struct keychain
 static const char *SIGNATURE_KEYCHAIN = "$keychain$";
 static const u32   ITERATION_KEYCHAIN = 1000;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: password not found
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (keychain_t);
@@ -261,6 +272,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23300.c b/src/modules/module_23300.c
index b5be729eb..8a4ccacab 100644
--- a/src/modules/module_23300.c
+++ b/src/modules/module_23300.c
@@ -62,6 +62,17 @@ typedef struct iwork
 static const char *SIGNATURE_IWORK  = "$iwork$";
 static const u32   FORMAT_NUM_IWORK = 1;
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (iwork_tmp_t);
@@ -325,6 +336,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23400.c b/src/modules/module_23400.c
index ff45419f1..27e4412fa 100644
--- a/src/modules/module_23400.c
+++ b/src/modules/module_23400.c
@@ -53,6 +53,17 @@ typedef struct bitwarden_tmp
 
 static const char *SIGNATURE_BITWARDEN = "$bitwarden$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
   char *jit_build_options = NULL;
@@ -305,6 +316,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23500.c b/src/modules/module_23500.c
index ac77edf6d..e0607a8d4 100644
--- a/src/modules/module_23500.c
+++ b/src/modules/module_23500.c
@@ -67,17 +67,6 @@ typedef struct axcrypt2_tmp
 
 static const char *SIGNATURE_AXCRYPT2 = "$axcrypt$";
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    return true;
-  }
-
-  return false;
-}
-
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (axcrypt2_t);
@@ -361,6 +350,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23600.c b/src/modules/module_23600.c
index 7f4cdceb1..a0dde6ca8 100644
--- a/src/modules/module_23600.c
+++ b/src/modules/module_23600.c
@@ -67,17 +67,6 @@ typedef struct axcrypt2_tmp
 
 static const char *SIGNATURE_AXCRYPT2 = "$axcrypt$";
 
-bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
-{
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
-  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
-  {
-    return true;
-  }
-
-  return false;
-}
-
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (axcrypt2_t);
@@ -361,6 +350,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = module_unstable_warning;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_23900.c b/src/modules/module_23900.c
index ea598dd68..c5c25ef65 100644
--- a/src/modules/module_23900.c
+++ b/src/modules/module_23900.c
@@ -56,6 +56,23 @@ typedef struct bestcrypt
 
 static const char *SIGNATURE_BESTCRYPT  = "$bcve$";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 tmp_size = (const u64) sizeof (bestcrypt_tmp_t);
@@ -268,6 +285,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_24500.c b/src/modules/module_24500.c
index d23e5d7ae..c9983eeb5 100644
--- a/src/modules/module_24500.c
+++ b/src/modules/module_24500.c
@@ -64,7 +64,7 @@ static const int   SALT_LEN_TELEGRAM  =  32;
 
 bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
 {
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: password not found
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_24600.c b/src/modules/module_24600.c
index 7a2ef5dc6..29b6ea548 100644
--- a/src/modules/module_24600.c
+++ b/src/modules/module_24600.c
@@ -92,6 +92,23 @@ typedef enum kern_type_sqlcipher
 
 static const char *SIGNATURE_SQLCIPHER = "SQLCIPHER";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (sqlcipher_t);
@@ -350,6 +367,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }
diff --git a/src/modules/module_25300.c b/src/modules/module_25300.c
index f736623e1..cabd588ee 100644
--- a/src/modules/module_25300.c
+++ b/src/modules/module_25300.c
@@ -116,7 +116,7 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
-  // amdgpu-pro-19.30-934563-ubuntu-18.04: self-test failure.
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
   if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
   {
     return true;
diff --git a/src/modules/module_26100.c b/src/modules/module_26100.c
index 2a6478828..f0995c2f9 100644
--- a/src/modules/module_26100.c
+++ b/src/modules/module_26100.c
@@ -61,6 +61,23 @@ typedef struct mozilla_aes
 static const char *SIGNATURE_MOZILLA     = "$mozilla$";
 static const char *SIGNATURE_MOZILLA_AES = "AES";
 
+bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  // w_opencl_runtime_p_2021.2.0.616.exe: unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+  {
+    return true;
+  }
+
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy): unhandled return code 255
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false))
+  {
+    return true;
+  }
+
+  return false;
+}
+
 u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
 {
   const u64 esalt_size = (const u64) sizeof (mozilla_aes_t);
@@ -314,6 +331,6 @@ void module_init (module_ctx_t *module_ctx)
   module_ctx->module_st_hash                  = module_st_hash;
   module_ctx->module_st_pass                  = module_st_pass;
   module_ctx->module_tmp_size                 = module_tmp_size;
-  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = module_unstable_warning;
   module_ctx->module_warmup_disable           = MODULE_DEFAULT;
 }