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changeset 9811:32bf28cecf9f

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6425762 Kernel panic (divide by 0) when blank cd inserted into USB cdburner Sol 10x86 upd1 on Satellite A30
author Sheshadri Vasudevan <Sheshadri.Vasudevan@Sun.COM>
date Mon, 08 Jun 2009 15:32:25 +0530
parents 0bddf3c4f9fb
children a2990074321f
files usr/src/uts/common/io/cmlb.c
diffstat 1 files changed, 6 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/usr/src/uts/common/io/cmlb.c	Sun Jun 07 23:28:14 2009 -0700
+++ b/usr/src/uts/common/io/cmlb.c	Mon Jun 08 15:32:25 2009 +0530
@@ -1827,7 +1827,10 @@
 
 	spc = pgeomp->g_nhead * pgeomp->g_nsect;
 	pgeomp->g_capacity = capacity;
-	pgeomp->g_ncyl = pgeomp->g_capacity / spc;
+	if (spc == 0)
+		pgeomp->g_ncyl = 0;
+	else
+		pgeomp->g_ncyl = pgeomp->g_capacity / spc;
 	pgeomp->g_acyl = 0;
 
 	/*
@@ -2815,7 +2818,8 @@
 		phys_spc = cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect;
 	}
 
-	ASSERT(phys_spc != 0);
+	if (phys_spc == 0)
+		return;
 	cl->cl_g.dkg_pcyl = cl->cl_solaris_size / phys_spc;
 	if (cl->cl_alter_behavior & CMLB_FAKE_LABEL_ONE_PARTITION) {
 		/* disable devid */