diff --git a/source/blender/blenkernel/intern/mesh_validate.c b/source/blender/blenkernel/intern/mesh_validate.c
index 5d39811cba9..4528b748412 100644
--- a/source/blender/blenkernel/intern/mesh_validate.c
+++ b/source/blender/blenkernel/intern/mesh_validate.c
@@ -211,6 +211,7 @@ int BKE_mesh_validate_arrays(Mesh *mesh,
 
 	short verts_fixed = FALSE;
 	short vert_weights_fixed = FALSE;
+	int msel_fixed = FALSE;
 
 	int do_edge_recalc = FALSE;
 
@@ -754,8 +755,6 @@ int BKE_mesh_validate_arrays(Mesh *mesh,
 		}
 	}
 
-	PRINT("BKE_mesh_validate: finished\n\n");
-
 #   undef REMOVE_EDGE_TAG
 #   undef IS_REMOVED_EDGE
 #   undef REMOVE_LOOP_TAG
@@ -779,7 +778,51 @@ int BKE_mesh_validate_arrays(Mesh *mesh,
 		}
 	}
 
-	return (verts_fixed || vert_weights_fixed || do_polyloop_free || do_edge_free || do_edge_recalc);
+	if (mesh && mesh->mselect) {
+		MSelect *msel;
+		int free_msel = FALSE;
+
+		for (i = 0, msel = mesh->mselect; i < mesh->totselect; i++, msel++) {
+			int tot_elem;
+
+			if (msel->index < 0) {
+				PRINT("Mesh select element %d type %d index is negative, "
+				      "resetting selection stack.\n", i, msel->type);
+				free_msel = TRUE;
+				break;
+			}
+
+			switch (msel->type) {
+				case ME_VSEL:
+					tot_elem = mesh->totvert;
+					break;
+				case ME_ESEL:
+					tot_elem = mesh->totedge;
+					break;
+				case ME_FSEL:
+					tot_elem = mesh->totface;
+					break;
+			}
+
+			if (msel->index > tot_elem) {
+				PRINT("Mesh select element %d type %d index %d is larger than data array size %d, "
+				      "resetting selection stack.\n", i, msel->type, msel->index, tot_elem);
+
+				free_msel = TRUE;
+				break;
+			}
+		}
+
+		if (free_msel) {
+			MEM_freeN(mesh->mselect);
+			mesh->mselect = NULL;
+			mesh->totselect = 0;
+		}
+	}
+
+	PRINT("BKE_mesh_validate: finished\n\n");
+
+	return (verts_fixed || vert_weights_fixed || do_polyloop_free || do_edge_free || do_edge_recalc || msel_fixed);
 }
 
 static int mesh_validate_customdata(CustomData *data, short do_verbose, const short do_fixes)
diff --git a/source/blender/blenlib/BLI_fileops.h b/source/blender/blenlib/BLI_fileops.h
index ca810ee5b93..ac0ec6a52a7 100644
--- a/source/blender/blenlib/BLI_fileops.h
+++ b/source/blender/blenlib/BLI_fileops.h
@@ -65,7 +65,7 @@ int    BLI_is_dir(const char *path);
 int    BLI_is_file(const char *path);
 void   BLI_dir_create_recursive(const char *dir);
 double BLI_dir_free_space(const char *dir);
-char  *BLI_current_working_dir(char *dir, const int maxlen);
+char  *BLI_current_working_dir(char *dir, const size_t maxlen);
 
 unsigned int BLI_dir_contents(const char *dir, struct direntry **filelist);
 
diff --git a/source/blender/blenlib/intern/storage.c b/source/blender/blenlib/intern/storage.c
index d4f251d4f5e..965e8b5eec3 100644
--- a/source/blender/blenlib/intern/storage.c
+++ b/source/blender/blenlib/intern/storage.c
@@ -102,7 +102,7 @@ static struct ListBase dirbase_ = {NULL, NULL};
 static struct ListBase *dirbase = &dirbase_;
 
 /* can return NULL when the size is not big enough */
-char *BLI_current_working_dir(char *dir, const int maxncpy)
+char *BLI_current_working_dir(char *dir, const size_t maxncpy)
 {
 	const char *pwd = getenv("PWD");
 	if (pwd) {
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 37e05623f2d..60469a31a8c 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -5909,11 +5909,20 @@ static void direct_link_screen(FileData *fd, bScreen *sc)
 				}
 			}
 			else if (sl->spacetype == SPACE_SEQ) {
+				/* grease pencil data is not a direct data and can't be linked from direct_link*
+				 * functions, it should be linked from lib_link* funcrions instead
+				 *
+				 * otherwise it'll lead to lost grease data on open because it'll likely be
+				 * read from file after all other users of grease pencil and newdataadr would
+				 * simple return NULL here (sergey)
+				 */
+#if 0
 				SpaceSeq *sseq = (SpaceSeq *)sl;
 				if (sseq->gpd) {
 					sseq->gpd = newdataadr(fd, sseq->gpd);
 					direct_link_gpencil(fd, sseq->gpd);
 				}
+#endif
 			}
 			else if (sl->spacetype == SPACE_BUTS) {
 				SpaceButs *sbuts = (SpaceButs *)sl;
diff --git a/source/blender/editors/object/object_bake.c b/source/blender/editors/object/object_bake.c
index 810fe244984..e1c715952d1 100644
--- a/source/blender/editors/object/object_bake.c
+++ b/source/blender/editors/object/object_bake.c
@@ -616,13 +616,15 @@ static void *init_heights_data(MultiresBakeRender *bkr, Image *ima)
 
 		CLAMP(ss_lvl, 0, 6);
 
-		smd.levels = smd.renderLevels = ss_lvl;
-		smd.flags |= eSubsurfModifierFlag_SubsurfUv;
+		if (ss_lvl > 0) {
+			smd.levels = smd.renderLevels = ss_lvl;
+			smd.flags |= eSubsurfModifierFlag_SubsurfUv;
 
-		if (bkr->simple)
-			smd.subdivType = ME_SIMPLE_SUBSURF;
+			if (bkr->simple)
+				smd.subdivType = ME_SIMPLE_SUBSURF;
 
-		height_data->ssdm = subsurf_make_derived_from_derived(bkr->lores_dm, &smd, NULL, 0);
+			height_data->ssdm = subsurf_make_derived_from_derived(bkr->lores_dm, &smd, NULL, 0);
+		}
 	}
 
 	height_data->origindex = lodm->getTessFaceDataArray(lodm, CD_ORIGINDEX);
diff --git a/source/blender/editors/space_sequencer/sequencer_edit.c b/source/blender/editors/space_sequencer/sequencer_edit.c
index bc8133cded6..7ed5c77ed1f 100644
--- a/source/blender/editors/space_sequencer/sequencer_edit.c
+++ b/source/blender/editors/space_sequencer/sequencer_edit.c
@@ -2694,8 +2694,11 @@ static int sequencer_swap_data_exec(bContext *C, wmOperator *op)
 		return OPERATOR_CANCELLED;
 	}
 
-	sound_remove_scene_sound(scene, seq_act->scene_sound);
-	sound_remove_scene_sound(scene, seq_other->scene_sound);
+	if (seq_act->scene_sound)
+		sound_remove_scene_sound(scene, seq_act->scene_sound);
+
+	if (seq_other->scene_sound)
+		sound_remove_scene_sound(scene, seq_other->scene_sound);
 
 	seq_act->scene_sound = NULL;
 	seq_other->scene_sound = NULL;
diff --git a/source/blender/imbuf/intern/anim_movie.c b/source/blender/imbuf/intern/anim_movie.c
index a908d4aa3b8..f0c2d754333 100644
--- a/source/blender/imbuf/intern/anim_movie.c
+++ b/source/blender/imbuf/intern/anim_movie.c
@@ -64,7 +64,7 @@
 #include <io.h>
 #endif
 
-#include "BLI_blenlib.h" /* BLI_remlink BLI_filesize BLI_addtail
+#include "BLI_blenlib.h" /* BLI_remlink BLI_file_descriptor_size BLI_addtail
                           * BLI_countlist BLI_stringdec */
 #include "BLI_utildefines.h"
 #include "BLI_math_base.h"
diff --git a/source/blender/windowmanager/wm_window.h b/source/blender/windowmanager/wm_window.h
index 6fd4ced9c23..6360cfd4802 100644
--- a/source/blender/windowmanager/wm_window.h
+++ b/source/blender/windowmanager/wm_window.h
@@ -56,7 +56,7 @@ void		wm_window_raise			(wmWindow *win);
 void		wm_window_lower			(wmWindow *win);
 void		wm_window_set_size		(wmWindow *win, int width, int height);
 void		wm_window_get_size		(wmWindow *win, int *width_r, int *height_r);
-void		wm_window_get_size_ghost	(wmWindow *win, int *width_r, int *height_r);
+void		wm_window_get_size_ghost(wmWindow *win, int *width_r, int *height_r);
 void		wm_window_get_position	(wmWindow *win, int *posx_r, int *posy_r);
 void		wm_window_swap_buffers	(wmWindow *win);