From e2bbb41a308267c5bcc2c6a8c5224b1638a2904f Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@rei2.9hal>
Date: Sun, 22 Jan 2012 22:33:15 +0100
Subject: fix unlock(&procalloc) race on mp systems

---
 sys/src/9/port/proc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/src/9/port/proc.c b/sys/src/9/port/proc.c
index 118561f3a..669c4652f 100644
--- a/sys/src/9/port/proc.c
+++ b/sys/src/9/port/proc.c
@@ -86,13 +86,15 @@ schedinit(void)		/* never returns */
 			 *	palloc
 			 */
 			mmurelease(up);
+			unlock(&palloc);
 
 			up->qnext = procalloc.free;
 			procalloc.free = up;
 
-			unlock(&palloc);
+			/* proc is free now, make sure unlock() wont touch it */
+			up = procalloc.p = nil;
 			unlock(&procalloc);
-			break;
+			sched();
 		}
 		up->mach = nil;
 		updatecpu(up);
-- 
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