svn commit: r196567 - head/sys/kern

[Marius Strobl]

Author: marius
Date: Wed Aug 26 21:10:47 2009
New Revision: 196567
URL: http://svn.freebsd.org/changeset/base/196567

Log:
  Add a temporary workaround which just lets init die instead of
  causing a panic if it is killed due to a unsolved stack overflow
  seen very late during shutdown on sparc64 when the gmirror worker
  process exists, which is a regression introduced in 8.0.
  
  Reviewed by:	kib
  MFC after:	3 days

Modified:
  head/sys/kern/kern_exit.c

Modified: head/sys/kern/kern_exit.c
==============================================================================
--- head/sys/kern/kern_exit.c	Wed Aug 26 21:08:41 2009	(r196566)
+++ head/sys/kern/kern_exit.c	Wed Aug 26 21:10:47 2009	(r196567)
@@ -131,7 +131,12 @@ exit1(struct thread *td, int rv)
 	mtx_assert(&Giant, MA_NOTOWNED);
 
 	p = td->td_proc;
-	if (p == initproc) {
+	/*
+	 * XXX in case we're rebooting we just let init die in order to
+	 * work around an unsolved stack overflow seen very late during
+	 * shutdown on sparc64 when the gmirror worker process exists.
+	 */ 
+	if (p == initproc && rebooting == 0) {
 		printf("init died (signal %d, exit %d)\n",
 		    WTERMSIG(rv), WEXITSTATUS(rv));
 		panic("Going nowhere without my init!");