Merge "drm/msm/dp: changes to prevent null pointer dereference" (c7872868) · Commits · e / devices / android_kernel_xiaomi_sm6125

drivers/gpu/drm/msm/dp/dp_debug.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -757,7 +757,7 @@ static ssize_t dp_debug_write_exe_mode(struct file *file,
		const char __user user_buff, size_t count, loff_t ppos)
		{
		struct dp_debug_private *debug = file->private_data;
		char *buf;
		char buf[SZ_32];
		size_t len = 0;

		if (!debug)
		@@ -767,7 +767,9 @@ static ssize_t dp_debug_write_exe_mode(struct file *file,
		return 0;

		len = min_t(size_t, count, SZ_32 - 1);
		buf = memdup_user(user_buff, len);
		if (copy_from_user(buf, user_buff, len))
		goto end;

		buf[len] = '\0';

		if (sscanf(buf, "%3s", debug->exe_mode) != 1)