Commit 86cde618 authored by Vasily Gorbik's avatar Vasily Gorbik
Browse files

s390/startup: correct "dfltcc" option parsing 



Currently if just "dfltcc" is passed as a kernel command line option
"val" going to be NULL, this leads to reading at address 0 in
strcmp(val, "off")

Fix that by making sure "val" is not NULL. This does not affect option
handling logic.

Reviewed-by: default avatarSven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 3731ac57

arch/s390/boot/ipl_parm.c

+1 −1
Original line number Diff line number Diff line
@@ -230,7 +230,7 @@ void parse_boot_command_line(void) 
		if (!strcmp(param, "vmalloc") && val)

			vmalloc_size = round_up(memparse(val, NULL), PAGE_SIZE);



		if (!strcmp(param, "dfltcc")) {

		if (!strcmp(param, "dfltcc") && val) {

			if (!strcmp(val, "off"))

				zlib_dfltcc_support = ZLIB_DFLTCC_DISABLED;

			else if (!strcmp(val, "on"))