Author: mav
Date: Mon Nov 2 08:31:00 2009
New Revision: 198782
URL: http://svn.freebsd.org/changeset/base/198782
Log:
The async callback could free the device. If it is a broadcast async,
it doesn't hold device reference, so take our own reference.
Submitted by: thompsa
Modified:
head/sys/cam/cam_xpt.c
Modified: head/sys/cam/cam_xpt.c
==============================================================================
--- head/sys/cam/cam_xpt.c Mon Nov 2 07:21:13 2009 (r198781)
+++ head/sys/cam/cam_xpt.c Mon Nov 2 08:31:00 2009 (r198782)
@@ -4022,13 +4022,19 @@ xpt_async(u_int32_t async_code, struct c
&& path->device->lun_id != CAM_LUN_WILDCARD
&& device->lun_id != CAM_LUN_WILDCARD)
continue;
-
+ /*
+ * The async callback could free the device.
+ * If it is a broadcast async, it doesn't hold
+ * device reference, so take our own reference.
+ */
+ xpt_acquire_device(device);
(*(bus->xport->async))(async_code, bus,
target, device,
async_arg);
xpt_async_bcast(&device->asyncs, async_code,
path, async_arg);
+ xpt_release_device(device);
}
}
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