code: plan9front

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devuart: dont allow ridiculous queue sizes

--- a/sys/src/9/port/devuart.c

+++ b/sys/src/9/port/devuart.c

@@ -499,6 +499,8 @@

 			break;

 		case 'Q':

 		case 'q':

+			if(n < 0 || n > 1024*1024)

+				return -1;

 			if(p->iq != nil)

 				qsetlimit(p->iq, n);

 			if(p->oq != nil)