Module Name: src
Committed By: jdolecek
Date: Tue Apr 14 13:02:40 UTC 2020
Modified Files:
src/sys/arch/xen/xen: xbd_xenbus.c
Log Message:
add forgotten mutex_exit() in detach, which caused panic in uvm_unmap1()
due to held spin lock
To generate a diff of this commit:
cvs rdiff -u -r1.109 -r1.110 src/sys/arch/xen/xen/xbd_xenbus.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/xen/xen/xbd_xenbus.c
diff -u src/sys/arch/xen/xen/xbd_xenbus.c:1.109 src/sys/arch/xen/xen/xbd_xenbus.c:1.110
--- src/sys/arch/xen/xen/xbd_xenbus.c:1.109 Tue Apr 14 09:27:28 2020
+++ src/sys/arch/xen/xen/xbd_xenbus.c Tue Apr 14 13:02:40 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: xbd_xenbus.c,v 1.109 2020/04/14 09:27:28 jdolecek Exp $ */
+/* $NetBSD: xbd_xenbus.c,v 1.110 2020/04/14 13:02:40 jdolecek Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@@ -50,7 +50,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xbd_xenbus.c,v 1.109 2020/04/14 09:27:28 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xbd_xenbus.c,v 1.110 2020/04/14 13:02:40 jdolecek Exp $");
#include "opt_xen.h"
@@ -393,6 +393,7 @@ xbd_xenbus_detach(device_t dev, int flag
mutex_enter(&sc->sc_lock);
while (xengnt_status(sc->sc_ring_gntref))
cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz/2);
+ mutex_exit(&sc->sc_lock);
xengnt_revoke_access(sc->sc_ring_gntref);
uvm_km_free(kernel_map, (vaddr_t)sc->sc_ring.sring,
