[haiku-bugs] [Haiku] #5005: Reversed Locking Order in legacy_drivers.cpp
- From: "bonefish" <trac@xxxxxxxxxxxxxxxx>
- Date: Thu, 19 Nov 2009 21:57:47 -0000
#5005: Reversed Locking Order in legacy_drivers.cpp
---------------------------+------------------------------------------------
Reporter: bonefish | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Keywords: | Blockedby:
Platform: All | Blocking:
---------------------------+------------------------------------------------
legacy_drivers.cpp calls {add,remove}_node_listener() for sDriverWatcher
with sLock held. DriverWatcher::EventOccured() acquires sLock, too. Since
the node monitoring service has an internal lock it acquires in
{add,remove}_node_listener() and also holds when calling the listeners'
EventOccurred(), we have contradicting locking orders for the two cases.
--
Ticket URL: <http://dev.haiku-os.org/ticket/5005>
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