Patch-ID# 100758-01
Keywords: kernel panic writing hole UFS file
Synopsis: SunOS 5.0: Kernel can panic when writing to a hole in a UFS file.
Date: 02/Oct/92

SunOS release: 5.0 (Solaris 2.0)

Unbundled Product: 

Unbundled Release: 

Topic: POINT PATCH: The kernel can panic when writing to a hole in a UFS file.

BugId's fixed with this patch: 1093214

Relevant Architectures ('arch -k' values if kernel specific): sun4c

Other patches which conflict with this patch: 

This patch obsoleted by: Solaris 2.1 

Changes incorporated in this version: 1093214

Files included with this patch: /kernel/fs/ufs

Problem Description: 

	The kernel can panic when writing to a hole in a UFS file.  This is
	caused by a bug in the UFS getapage() clustering.  This bug has been
	fixed in Solaris 2.1.  The patch included here will fix the bug by
	avoiding the clustering code where it resides, which will result in
	a performance degradation.

	NOTE: This is a point patch for SunOS 5.0 only.  The next release
	of SunOS will address the fix in a different manner, and as such
	this particular patch will not be integrated.