Author: mav
Date: Fri Mar 27 08:55:54 2015
New Revision: 280746
URL: https://svnweb.freebsd.org/changeset/base/280746
Log:
MFC r280042: Close potential race on blockif_close().
Reported by: vangyzen
Modified:
stable/10/usr.sbin/bhyve/block_if.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/usr.sbin/bhyve/block_if.c
==============================================================================
--- stable/10/usr.sbin/bhyve/block_if.c Fri Mar 27 08:54:55 2015
(r280745)
+++ stable/10/usr.sbin/bhyve/block_if.c Fri Mar 27 08:55:54 2015
(r280746)
@@ -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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