Author: mav
Date: Sun Mar 15 16:18:03 2015
New Revision: 280042
URL: https://svnweb.freebsd.org/changeset/base/280042
Log:
Close potential race on blockif_close().
Reported by: vangyzen
MFC after: 2 weeks
Modified:
head/usr.sbin/bhyve/block_if.c
Modified: head/usr.sbin/bhyve/block_if.c
==============================================================================
--- head/usr.sbin/bhyve/block_if.c Sun Mar 15 16:09:39 2015
(r280041)
+++ head/usr.sbin/bhyve/block_if.c Sun Mar 15 16:18:03 2015
(r280042)
@@ -579,7 +579,9 @@ blockif_close(struct blockif_ctxt *bc)
/*
* Stop the block i/o thread
*/
+ pthread_mutex_lock(&bc->bc_mtx);
bc->bc_closing = 1;
+ pthread_mutex_unlock(&bc->bc_mtx);
pthread_cond_broadcast(&bc->bc_cond);
for (i = 0; i < BLOCKIF_NUMTHR; i++)
pthread_join(bc->bc_btid[i], &jval);
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