Module Name: src Committed By: martin Date: Mon May 4 13:58:17 UTC 2020
Modified Files: src/sys/dev/sun [netbsd-9]: disksubr.c Log Message: Pull up following revision(s) (requested by jdc in ticket #886): sys/dev/sun/disksubr.c: revision 1.17 If the sector size is 0, return early in readdisklabel(). Prevents a panic trying to use a 0-sized buffer, which can happen if we run (e.g.) `scsictl /dev/cd0c identify` with no medium in the CD drive. To generate a diff of this commit: cvs rdiff -u -r1.16 -r1.16.4.1 src/sys/dev/sun/disksubr.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/dev/sun/disksubr.c diff -u src/sys/dev/sun/disksubr.c:1.16 src/sys/dev/sun/disksubr.c:1.16.4.1 --- src/sys/dev/sun/disksubr.c:1.16 Wed Apr 3 22:10:52 2019 +++ src/sys/dev/sun/disksubr.c Mon May 4 13:58:17 2020 @@ -1,4 +1,4 @@ -/* $NetBSD: disksubr.c,v 1.16 2019/04/03 22:10:52 christos Exp $ */ +/* $NetBSD: disksubr.c,v 1.16.4.1 2020/05/04 13:58:17 martin Exp $ */ /* * Copyright (c) 1982, 1986, 1988 Regents of the University of California. @@ -55,7 +55,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: disksubr.c,v 1.16 2019/04/03 22:10:52 christos Exp $"); +__KERNEL_RCSID(0, "$NetBSD: disksubr.c,v 1.16.4.1 2020/05/04 13:58:17 martin Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -104,6 +104,8 @@ readdisklabel(dev_t dev, void (*strat)(s lp->d_partitions[RAW_PART].p_size = 0x1fffffff; lp->d_partitions[RAW_PART].p_offset = 0; } + if (lp->d_secsize == 0) + return ("sector size 0"); /* obtain buffer to probe drive with */ bp = geteblk((int)lp->d_secsize);