Commit 627f192d authored Jan 08, 2019 by Geert Uytterhoeven

dio: Fix buffer overflow in case of unknown board



With gcc 8.2.0:

    drivers/dio/dio.c: In function ‘dio_init’:
    drivers/dio/dio.c:240:17: warning: ‘strcpy’ writing 69 or more bytes into a region of size 64 overflows the destination [-Wstringop-overflow=]
		     strcpy(dev->name,dio_getname(dev->id));
		     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Indeed, if an unknown board is present, the target buffer will overflow.
Shorten the unknown board name string to fix this, and declare it as an
array while at it.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

parent 800855ea

drivers/dio/dio.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -89,8 +89,8 @@ static struct dioname names[] =
		#undef DIONAME
		#undef DIOFBNAME

		static const char *unknowndioname
		= "unknown DIO board -- please email <linux-m68k@lists.linux-m68k.org>!";
		static const char unknowndioname[]
		= "unknown DIO board, please email linux-m68k@lists.linux-m68k.org";

		static const char *dio_getname(int id)
		{

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