#11452: Race condition in BPopUpMenu leads to KDL
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Reporter: pulkomandy | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: - General | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Old description:
This may not be easy to trigger...
We are supposed to only allow one popup menu on a given view at a time.
This doesn't work perfectly however and I often manage to open two menus
in Tracker: the desktop one and the specific menu for a given icon (you
have to be fast to do this - right click on the desktop and then on the
icon a short time after that, but before the first menu is open).
Usually this is harmless and only leads to the two menus opening. But
today I went to KDL.
{{{
PANIC: vm_page_fault: unhandled page fault in kernel space at 0x706f78,
ip 0x80084ba2
}}}
The panic is in wait_for_thread_etc, called by BPopUpMenu::_Go. It seems
that it's trying to access invalid thread data.
I should note that I was trying to replicate the CDDA panics/corruption,
so that may be the actual problem...
