scripts that crashes vimc when it is unbound:

trash.sh - crashes when vimc is unbound while streaming

media-trash.sh - crashes when vimc is unbound while the media
device runs G_TOPOLOGY

media-trash.sh

+#!/bin/bash
+echo 15 > /proc/sys/kernel/printk
+#echo "file drivers/media/platform/vimc/* +p" > /sys/kernel/debug/dynamic_debug/control
+
+gcc media_syscall.c -o media_syscall
+for ((i=1;i<=1000000000000000;i++));
+do
+	echo $i
+	modprobe vimc
+	./media_syscall &
+	sleep 1;
+	echo -n vimc.0 >/sys/bus/platform/drivers/vimc/unbind
+	echo -n vimc.0 >/sys/bus/platform/drivers/vimc/bind
+	modprobe vimc -r
+done
+

media_syscall.c

+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/sysmacros.h>
+#include <dirent.h>
+
+#include <linux/media.h>
+
+//#include <media-info.h>
+
+int main() {
+
+	int fd = open("/dev/media0", O_RDWR);
+	struct media_v2_topology topology;
+
+	if (fd == -1) {
+		printf("err open media\n");
+		return -1;
+	}
+	for (int i =0; i<1000000000; i++) {
+		memset(&topology, 0, sizeof(topology));
+		if (ioctl(fd, MEDIA_IOC_G_TOPOLOGY, &topology)) {
+			perror("topology err\n");
+			printf("iteration %d\n", i);
+			return -1;
+		}
+	}
+
+	return 0;
+}

trash.sh

+#!/bin/bash
+echo 15 > /proc/sys/kernel/printk
+#echo "file drivers/media/platform/vimc/* +p" > /sys/kernel/debug/dynamic_debug/control
+
+for ((i=1;i<=100;i++));
+do
+	echo $i
+	modprobe vimc
+	media-ctl -d platform:vimc -V '"Sensor A":0[fmt:SBGGR8_1X8/640x480]'
+	media-ctl -d platform:vimc -V '"Debayer A":0[fmt:SBGGR8_1X8/640x480]'
+	media-ctl -d platform:vimc -V '"Sensor B":0[fmt:SBGGR8_1X8/640x480]'
+	media-ctl -d platform:vimc -V '"Debayer B":0[fmt:SBGGR8_1X8/640x480]'
+	v4l2-ctl -z platform:vimc -d "RGB/YUV Capture" -v width=1920,height=1440
+	v4l2-ctl -z platform:vimc -d "Raw Capture 0" -v pixelformat=BA81
+	v4l2-ctl -z platform:vimc -d "Raw Capture 1" -v pixelformat=BA81
+	v4l2-ctl --stream-mmap --stream-count=1000 -d /dev/video2 & sleep 1; echo -n vimc.0 >/sys/bus/platform/drivers/vimc/unbind
+	echo -n vimc.0 >/sys/bus/platform/drivers/vimc/bind
+	modprobe vimc -r
+done
+